一、MyBatis Generator：
1.1 MyBatis Generator项目介绍
•简称MBG，是一个专门为MyBatis框架使用者定制的代码生成器，可以快速的根据表生成对应的映射文件，接口，以及bean类。支持基本的增删改查，以及QBC风格的条件查询。但是表连接、存储过程等这些复杂sql的定义需要我们手工编写
•官方文档地址
http://www.mybatis.org/generator/
•官方工程地址
https://github.com/mybatis/generator/releases
官方工程给了maven依赖，以及jar下载
1.2 创建工程Mybatis_mbg(这里使用的是传统的java工程，没有使用maven创建），会生成一个src文件夹。
jdk包会引入，同时创建lib文件夹，存放jar包。
建立conf文件夹，用于放配置文件。
需要使用的jar包
1.3 创建项目需要的数据表tbl_employee和tbl_dept：（先创建数据库mybatis）
create table tbl_employee(
id int primary key auto_increment,
last_name varchar(64) default null,
email varchar(60) default null,
gender varchar(6) default null,
d_id int
)engine=innodb,default charset=utf8;
create table tbl_dept(
id int primary key auto_increment,
dept_name varchar(64) default null
)engine=innodb,default charset=utf8;
alter table tbl_employee add constraint FK2tbl_dept foreign key (d_id) references tbl_dept(id) on delete no action on update no action;
创建好之后的数据表：
1.3创建工程配置文件mbg.xml（该文件放在根目录下，不在conf文件夹下）
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<!--
targetRuntime="MyBatis3Simple":生成简单版的CRUD
MyBatis3:豪华版
-->
<context id="DB2Tables" targetRuntime="MyBatis3">
<!-- jdbcConnection：指定如何连接到目标数据库 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/mybatis?allowMultiQueries=true"
userId="root"
password="123456">
</jdbcConnection>
<javaTypeResolver >
<!--property标签，可以配置的属性为forceBigDecimals，
该属性可以控制是否强制将 DECIMAL 和 NUMERIC 类型的 JDBC
字段转换为 Java 类型的java.math.BigDecimal，默认值为false -->
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- javaModelGenerator：指定javaBean的生成策略
targetPackage="test.model"：目标包名
targetProject="\MBGTestProject\src"：目标工程
-->
<javaModelGenerator targetPackage="com.xiaomifeng1010.mybatis.bean"
targetProject=".\src">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- sqlMapGenerator：sql映射生成策略： -->
<sqlMapGenerator targetPackage="com.xiaomifeng1010.mybatis.dao"
targetProject=".\conf">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!-- javaClientGenerator:指定mapper接口所在的位置 -->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.xiaomifeng1010.mybatis.dao"
targetProject=".\src">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!-- 指定要逆向分析哪些表：根据表要创建javaBean -->
<table tableName="tbl_dept" domainObjectName="Department"></table>
<table tableName="tbl_employee" domainObjectName="Employee"></table>
</context>
</generatorConfiguration>说明：
1）jdbcConnection配置数据库连接信息
2）javaModelGenerator配置javaBean的生成策略
3）sqlMapGenerator配置sql映射文件生成策略
4）javaClientGenerator配置Mapper接口的生成策略
5）table配置要逆向解析的数据表
tableName：表名
domainObjectName：对应的javaBean名
注意：
Context标签
targetRuntime=“MyBatis3“可以生成带条件的增删改查
targetRuntime=“MyBatis3Simple“可以生成基本的增删改查
如果再次生成，建议将之前生成的数据删除，避免xml向后追加内容出现的问题。
1.4在conf文件夹下创建配置文件mybatis-config.xml，配置mybatis，创建log4j.xml配置日志，ehcache.xml配置缓存，dbconfig.properties配置数据库连接属性。
1.4.1 dbconfig.properties(这里配置了mysql和Oracle数据源）
1.1.1jdbc.driver=com.mysql.jdbc.Driver
#allowMultiQueries=true开启批量执行sql
jdbc.url=jdbc:mysql://localhost:3306/mybatis?allowMultiQueries=true
jdbc.username=root
jdbc.password=123456
#如果是高版本的mysql需要对jdbc.url做一些额外设置
#jdbc.url=jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf8&useSSL=false&serverTimezone=UTC&allowMultiQueries=true
orcl.driver=oracle.jdbc.OracleDriver
orcl.url=jdbc:oracle:thin:@localhost:1521:XE
orcl.username=system
orcl.password=oracle1.4.2 mybatais-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--
1、mybatis可以使用properties来引入外部properties配置文件的内容；
resource：引入类路径下的资源
url：引入网络路径或者磁盘路径下的资源
-->
<properties resource="dbconfig.properties"></properties>
<!--
2、settings包含很多重要的设置项
setting:用来设置每一个设置项
name：设置项名
value：设置项取值
-->
<settings>
<setting name="mapUnderscoreToCamelCase" value="true"/>
<setting name="jdbcTypeForNull" value="NULL"/>
<!--显式的指定每个我们需要更改的配置的值，即使他是默认的。防止版本更新带来的问题 -->
<setting name="cacheEnabled" value="true"/>
<setting name="lazyLoadingEnabled" value="true"/>
<setting name="aggressiveLazyLoading" value="false"/>
</settings>
<!-- 3、typeAliases：别名处理器：可以为我们的java类型起别名
别名不区分大小写
-->
<typeAliases>
<!-- 1、typeAlias:为某个java类型起别名
type:指定要起别名的类型全类名;默认别名就是类名小写；employee
alias:指定新的别名
-->
<!-- <typeAlias type="com.xiaomifeng1010.mybatis.bean.Employee" alias="emp"/> -->
<!-- 2、package:为某个包下的所有类批量起别名
name：指定包名（为当前包以及下面所有的后代包的每一个类都起一个默认别名（类名小写），使用别名时不再区分大小写）
-->
<package name="com.xiaomifeng1010.mybatis.bean"/>
<!-- 3、批量起别名的情况下，使用@Alias注解为某个类型指定新的别名 -->
</typeAliases>
<!--
4、environments：环境们，mybatis可以配置多种环境 ,default指定使用某种环境。可以达到快速切换环境。
environment：配置一个具体的环境信息；必须有两个标签；id代表当前环境的唯一标识
transactionManager：事务管理器；
type：事务管理器的类型;JDBC(JdbcTransactionFactory)|MANAGED(ManagedTransactionFactory)
自定义事务管理器：实现TransactionFactory接口.type指定为全类名
dataSource：数据源;
type:数据源类型;UNPOOLED(UnpooledDataSourceFactory)
|POOLED(PooledDataSourceFactory)
|JNDI(JndiDataSourceFactory)
自定义数据源：实现DataSourceFactory接口，type是全类名
-->
<environments default="dev_mysql">
<environment id="dev_mysql">
<transactionManager type="JDBC"></transactionManager>
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</dataSource>
</environment>
<environment id="dev_oracle">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="${orcl.driver}" />
<property name="url" value="${orcl.url}" />
<property name="username" value="${orcl.username}" />
<property name="password" value="${orcl.password}" />
</dataSource>
</environment>
</environments>
<!-- 5、databaseIdProvider：支持多数据库厂商的；
type="DB_VENDOR"：VendorDatabaseIdProvider
作用就是得到数据库厂商的标识(驱动getDatabaseProductName())，mybatis就能根据数据库厂商标识来执行不同的sql;
MySQL，Oracle，SQL Server,xxxx
-->
<databaseIdProvider type="DB_VENDOR">
<!-- 为不同的数据库厂商起别名 -->
<property name="MySQL" value="mysql"/>
<property name="Oracle" value="oracle"/>
<property name="SQL Server" value="sqlserver"/>
</databaseIdProvider>
<!-- 将我们写好的sql映射文件（EmployeeMapper.xml）一定要注册到全局配置文件（mybatis-config.xml）中 -->
<!-- 6、mappers：将sql映射注册到全局配置中 -->
<mappers>
<!--
mapper:注册一个sql映射
注册配置文件
resource：引用类路径下的sql映射文件
mybatis/mapper/EmployeeMapper.xml
url：引用网路路径或者磁盘路径下的sql映射文件
file:///var/mappers/AuthorMapper.xml
注册接口
class：引用（注册）接口，
1、有sql映射文件，映射文件名必须和接口同名，并且放在与接口同一目录下；
2、没有sql映射文件，所有的sql都是利用注解写在接口上;
推荐：
比较重要的，复杂的Dao接口我们来写sql映射文件
不重要，简单的Dao接口为了开发快速可以使用注解；
-->
<!-- <mapper resource="mybatis/mapper/EmployeeMapper.xml"/> -->
<!-- <mapper class="com.xiaomifeng1010.mybatis.dao.EmployeeMapperAnnotation"/> -->
<!-- 批量注册： -->
<package name="com.xiaomifeng1010.mybatis.dao"/>
</mappers>
</configuration>1.4.3 log4j.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
<param name="Encoding" value="UTF-8" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-5p %d{MM-dd HH:mm:ss,SSS} %m (%F:%L) \n" />
</layout>
</appender>
<logger name="java.sql">
<level value="debug" />
</logger>
<logger name="org.apache.ibatis">
<level value="info" />
</logger>
<root>
<level value="debug" />
<appender-ref ref="STDOUT" />
</root>
</log4j:configuration>1.4.4 ehcache.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
<param name="Encoding" value="UTF-8" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-5p %d{MM-dd HH:mm:ss,SSS} %m (%F:%L) \n" />
</layout>
</appender>
<logger name="java.sql">
<level value="debug" />
</logger>
<logger name="org.apache.ibatis">
<level value="info" />
</logger>
<root>
<level value="debug" />
<appender-ref ref="STDOUT" />
</root>
</log4j:configuration>1.5 在src文件夹下创建包：
com.xiaomifeng1010.mybatis.bean和com.xiaomifeng1010.dao以及com.xiaomifeng1010.test
同时在conf文件下创建com.xiaomifeng1010.mybatis.dao用于存放生成器生成的mapper映射xml文件。
在test包下创建测试类和测试方法用于测试生成器。
package com.xiaomifeng1010.mybatis.test;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;
public class MyBatisTest {
public SqlSessionFactory getSqlSessionFactory() throws IOException {
String resource = "mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
return new SqlSessionFactoryBuilder().build(inputStream);
}
@Test
public void testMbg() throws Exception {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("mbg.xml");
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
callback, warnings);
myBatisGenerator.generate(null);
}
}1.6 此时项目的结构：
此时，bean包下边是空的，没有实体类，dao包下没有对应的mapper接口，conf文件下的dao包下也是空的，没有对应mapper的映射xml文件
1.7 执行测试类中的测试方法：
1.8 此时刷新项目：
发现bean包下产生Employee和Department实体类，每个实体类还多产生了对应的example类。同时产生了对应的dao接口，和dao的配置xml文件
1.9查看生成的类：
1.9.1 Employee类和Department类
package com.xiaomifeng1010.mybatis.bean;
public class Employee {
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database column tbl_employee.id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
private Integer id;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database column tbl_employee.last_name
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
private String lastName;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database column tbl_employee.email
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
private String email;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database column tbl_employee.gender
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
private String gender;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database column tbl_employee.d_id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
private Integer dId;
/**
* This method was generated by MyBatis Generator.
* This method returns the value of the database column tbl_employee.id
*
* @return the value of tbl_employee.id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public Integer getId() {
return id;
}
/**
* This method was generated by MyBatis Generator.
* This method sets the value of the database column tbl_employee.id
*
* @param id the value for tbl_employee.id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setId(Integer id) {
this.id = id;
}
/**
* This method was generated by MyBatis Generator.
* This method returns the value of the database column tbl_employee.last_name
*
* @return the value of tbl_employee.last_name
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public String getLastName() {
return lastName;
}
/**
* This method was generated by MyBatis Generator.
* This method sets the value of the database column tbl_employee.last_name
*
* @param lastName the value for tbl_employee.last_name
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setLastName(String lastName) {
this.lastName = lastName == null ? null : lastName.trim();
}
/**
* This method was generated by MyBatis Generator.
* This method returns the value of the database column tbl_employee.email
*
* @return the value of tbl_employee.email
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public String getEmail() {
return email;
}
/**
* This method was generated by MyBatis Generator.
* This method sets the value of the database column tbl_employee.email
*
* @param email the value for tbl_employee.email
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setEmail(String email) {
this.email = email == null ? null : email.trim();
}
/**
* This method was generated by MyBatis Generator.
* This method returns the value of the database column tbl_employee.gender
*
* @return the value of tbl_employee.gender
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public String getGender() {
return gender;
}
/**
* This method was generated by MyBatis Generator.
* This method sets the value of the database column tbl_employee.gender
*
* @param gender the value for tbl_employee.gender
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setGender(String gender) {
this.gender = gender == null ? null : gender.trim();
}
/**
* This method was generated by MyBatis Generator.
* This method returns the value of the database column tbl_employee.d_id
*
* @return the value of tbl_employee.d_id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public Integer getdId() {
return dId;
}
/**
* This method was generated by MyBatis Generator.
* This method sets the value of the database column tbl_employee.d_id
*
* @param dId the value for tbl_employee.d_id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setdId(Integer dId) {
this.dId = dId;
}
}package com.xiaomifeng1010.mybatis.bean;
public class Department {
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database column tbl_dept.id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
private Integer id;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database column tbl_dept.dept_name
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
private String deptName;
/**
* This method was generated by MyBatis Generator.
* This method returns the value of the database column tbl_dept.id
*
* @return the value of tbl_dept.id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public Integer getId() {
return id;
}
/**
* This method was generated by MyBatis Generator.
* This method sets the value of the database column tbl_dept.id
*
* @param id the value for tbl_dept.id
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setId(Integer id) {
this.id = id;
}
/**
* This method was generated by MyBatis Generator.
* This method returns the value of the database column tbl_dept.dept_name
*
* @return the value of tbl_dept.dept_name
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public String getDeptName() {
return deptName;
}
/**
* This method was generated by MyBatis Generator.
* This method sets the value of the database column tbl_dept.dept_name
*
* @param deptName the value for tbl_dept.dept_name
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setDeptName(String deptName) {
this.deptName = deptName == null ? null : deptName.trim();
}
}可以看到生成的类中的方法中都有生成的说明信息。
1.9.2 查看生成的example类
package com.xiaomifeng1010.mybatis.bean;
import java.util.ArrayList;
import java.util.List;
public class EmployeeExample {
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected String orderByClause;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected boolean distinct;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected List<Criteria> oredCriteria;
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public EmployeeExample() {
oredCriteria = new ArrayList<Criteria>();
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setOrderByClause(String orderByClause) {
this.orderByClause = orderByClause;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public String getOrderByClause() {
return orderByClause;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setDistinct(boolean distinct) {
this.distinct = distinct;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public boolean isDistinct() {
return distinct;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public List<Criteria> getOredCriteria() {
return oredCriteria;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void or(Criteria criteria) {
oredCriteria.add(criteria);
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public Criteria or() {
Criteria criteria = createCriteriaInternal();
oredCriteria.add(criteria);
return criteria;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public Criteria createCriteria() {
Criteria criteria = createCriteriaInternal();
if (oredCriteria.size() == 0) {
oredCriteria.add(criteria);
}
return criteria;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected Criteria createCriteriaInternal() {
Criteria criteria = new Criteria();
return criteria;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void clear() {
oredCriteria.clear();
orderByClause = null;
distinct = false;
}
/**
* This class was generated by MyBatis Generator.
* This class corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected abstract static class GeneratedCriteria {
protected List<Criterion> criteria;
protected GeneratedCriteria() {
super();
criteria = new ArrayList<Criterion>();
}
public boolean isValid() {
return criteria.size() > 0;
}
public List<Criterion> getAllCriteria() {
return criteria;
}
public List<Criterion> getCriteria() {
return criteria;
}
protected void addCriterion(String condition) {
if (condition == null) {
throw new RuntimeException("Value for condition cannot be null");
}
criteria.add(new Criterion(condition));
}
protected void addCriterion(String condition, Object value, String property) {
if (value == null) {
throw new RuntimeException("Value for " + property + " cannot be null");
}
criteria.add(new Criterion(condition, value));
}
protected void addCriterion(String condition, Object value1, Object value2, String property) {
if (value1 == null || value2 == null) {
throw new RuntimeException("Between values for " + property + " cannot be null");
}
criteria.add(new Criterion(condition, value1, value2));
}
public Criteria andIdIsNull() {
addCriterion("id is null");
return (Criteria) this;
}
public Criteria andIdIsNotNull() {
addCriterion("id is not null");
return (Criteria) this;
}
public Criteria andIdEqualTo(Integer value) {
addCriterion("id =", value, "id");
return (Criteria) this;
}
public Criteria andIdNotEqualTo(Integer value) {
addCriterion("id <>", value, "id");
return (Criteria) this;
}
public Criteria andIdGreaterThan(Integer value) {
addCriterion("id >", value, "id");
return (Criteria) this;
}
public Criteria andIdGreaterThanOrEqualTo(Integer value) {
addCriterion("id >=", value, "id");
return (Criteria) this;
}
public Criteria andIdLessThan(Integer value) {
addCriterion("id <", value, "id");
return (Criteria) this;
}
public Criteria andIdLessThanOrEqualTo(Integer value) {
addCriterion("id <=", value, "id");
return (Criteria) this;
}
public Criteria andIdIn(List<Integer> values) {
addCriterion("id in", values, "id");
return (Criteria) this;
}
public Criteria andIdNotIn(List<Integer> values) {
addCriterion("id not in", values, "id");
return (Criteria) this;
}
public Criteria andIdBetween(Integer value1, Integer value2) {
addCriterion("id between", value1, value2, "id");
return (Criteria) this;
}
public Criteria andIdNotBetween(Integer value1, Integer value2) {
addCriterion("id not between", value1, value2, "id");
return (Criteria) this;
}
public Criteria andLastNameIsNull() {
addCriterion("last_name is null");
return (Criteria) this;
}
public Criteria andLastNameIsNotNull() {
addCriterion("last_name is not null");
return (Criteria) this;
}
public Criteria andLastNameEqualTo(String value) {
addCriterion("last_name =", value, "lastName");
return (Criteria) this;
}
public Criteria andLastNameNotEqualTo(String value) {
addCriterion("last_name <>", value, "lastName");
return (Criteria) this;
}
public Criteria andLastNameGreaterThan(String value) {
addCriterion("last_name >", value, "lastName");
return (Criteria) this;
}
public Criteria andLastNameGreaterThanOrEqualTo(String value) {
addCriterion("last_name >=", value, "lastName");
return (Criteria) this;
}
public Criteria andLastNameLessThan(String value) {
addCriterion("last_name <", value, "lastName");
return (Criteria) this;
}
public Criteria andLastNameLessThanOrEqualTo(String value) {
addCriterion("last_name <=", value, "lastName");
return (Criteria) this;
}
public Criteria andLastNameLike(String value) {
addCriterion("last_name like", value, "lastName");
return (Criteria) this;
}
public Criteria andLastNameNotLike(String value) {
addCriterion("last_name not like", value, "lastName");
return (Criteria) this;
}
public Criteria andLastNameIn(List<String> values) {
addCriterion("last_name in", values, "lastName");
return (Criteria) this;
}
public Criteria andLastNameNotIn(List<String> values) {
addCriterion("last_name not in", values, "lastName");
return (Criteria) this;
}
public Criteria andLastNameBetween(String value1, String value2) {
addCriterion("last_name between", value1, value2, "lastName");
return (Criteria) this;
}
public Criteria andLastNameNotBetween(String value1, String value2) {
addCriterion("last_name not between", value1, value2, "lastName");
return (Criteria) this;
}
public Criteria andEmailIsNull() {
addCriterion("email is null");
return (Criteria) this;
}
public Criteria andEmailIsNotNull() {
addCriterion("email is not null");
return (Criteria) this;
}
public Criteria andEmailEqualTo(String value) {
addCriterion("email =", value, "email");
return (Criteria) this;
}
public Criteria andEmailNotEqualTo(String value) {
addCriterion("email <>", value, "email");
return (Criteria) this;
}
public Criteria andEmailGreaterThan(String value) {
addCriterion("email >", value, "email");
return (Criteria) this;
}
public Criteria andEmailGreaterThanOrEqualTo(String value) {
addCriterion("email >=", value, "email");
return (Criteria) this;
}
public Criteria andEmailLessThan(String value) {
addCriterion("email <", value, "email");
return (Criteria) this;
}
public Criteria andEmailLessThanOrEqualTo(String value) {
addCriterion("email <=", value, "email");
return (Criteria) this;
}
public Criteria andEmailLike(String value) {
addCriterion("email like", value, "email");
return (Criteria) this;
}
public Criteria andEmailNotLike(String value) {
addCriterion("email not like", value, "email");
return (Criteria) this;
}
public Criteria andEmailIn(List<String> values) {
addCriterion("email in", values, "email");
return (Criteria) this;
}
public Criteria andEmailNotIn(List<String> values) {
addCriterion("email not in", values, "email");
return (Criteria) this;
}
public Criteria andEmailBetween(String value1, String value2) {
addCriterion("email between", value1, value2, "email");
return (Criteria) this;
}
public Criteria andEmailNotBetween(String value1, String value2) {
addCriterion("email not between", value1, value2, "email");
return (Criteria) this;
}
public Criteria andGenderIsNull() {
addCriterion("gender is null");
return (Criteria) this;
}
public Criteria andGenderIsNotNull() {
addCriterion("gender is not null");
return (Criteria) this;
}
public Criteria andGenderEqualTo(String value) {
addCriterion("gender =", value, "gender");
return (Criteria) this;
}
public Criteria andGenderNotEqualTo(String value) {
addCriterion("gender <>", value, "gender");
return (Criteria) this;
}
public Criteria andGenderGreaterThan(String value) {
addCriterion("gender >", value, "gender");
return (Criteria) this;
}
public Criteria andGenderGreaterThanOrEqualTo(String value) {
addCriterion("gender >=", value, "gender");
return (Criteria) this;
}
public Criteria andGenderLessThan(String value) {
addCriterion("gender <", value, "gender");
return (Criteria) this;
}
public Criteria andGenderLessThanOrEqualTo(String value) {
addCriterion("gender <=", value, "gender");
return (Criteria) this;
}
public Criteria andGenderLike(String value) {
addCriterion("gender like", value, "gender");
return (Criteria) this;
}
public Criteria andGenderNotLike(String value) {
addCriterion("gender not like", value, "gender");
return (Criteria) this;
}
public Criteria andGenderIn(List<String> values) {
addCriterion("gender in", values, "gender");
return (Criteria) this;
}
public Criteria andGenderNotIn(List<String> values) {
addCriterion("gender not in", values, "gender");
return (Criteria) this;
}
public Criteria andGenderBetween(String value1, String value2) {
addCriterion("gender between", value1, value2, "gender");
return (Criteria) this;
}
public Criteria andGenderNotBetween(String value1, String value2) {
addCriterion("gender not between", value1, value2, "gender");
return (Criteria) this;
}
public Criteria andDIdIsNull() {
addCriterion("d_id is null");
return (Criteria) this;
}
public Criteria andDIdIsNotNull() {
addCriterion("d_id is not null");
return (Criteria) this;
}
public Criteria andDIdEqualTo(Integer value) {
addCriterion("d_id =", value, "dId");
return (Criteria) this;
}
public Criteria andDIdNotEqualTo(Integer value) {
addCriterion("d_id <>", value, "dId");
return (Criteria) this;
}
public Criteria andDIdGreaterThan(Integer value) {
addCriterion("d_id >", value, "dId");
return (Criteria) this;
}
public Criteria andDIdGreaterThanOrEqualTo(Integer value) {
addCriterion("d_id >=", value, "dId");
return (Criteria) this;
}
public Criteria andDIdLessThan(Integer value) {
addCriterion("d_id <", value, "dId");
return (Criteria) this;
}
public Criteria andDIdLessThanOrEqualTo(Integer value) {
addCriterion("d_id <=", value, "dId");
return (Criteria) this;
}
public Criteria andDIdIn(List<Integer> values) {
addCriterion("d_id in", values, "dId");
return (Criteria) this;
}
public Criteria andDIdNotIn(List<Integer> values) {
addCriterion("d_id not in", values, "dId");
return (Criteria) this;
}
public Criteria andDIdBetween(Integer value1, Integer value2) {
addCriterion("d_id between", value1, value2, "dId");
return (Criteria) this;
}
public Criteria andDIdNotBetween(Integer value1, Integer value2) {
addCriterion("d_id not between", value1, value2, "dId");
return (Criteria) this;
}
}
/**
* This class was generated by MyBatis Generator.
* This class corresponds to the database table tbl_employee
*
* @mbggenerated do_not_delete_during_merge Fri Oct 11 22:03:26 CST 2019
*/
public static class Criteria extends GeneratedCriteria {
protected Criteria() {
super();
}
}
/**
* This class was generated by MyBatis Generator.
* This class corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public static class Criterion {
private String condition;
private Object value;
private Object secondValue;
private boolean noValue;
private boolean singleValue;
private boolean betweenValue;
private boolean listValue;
private String typeHandler;
public String getCondition() {
return condition;
}
public Object getValue() {
return value;
}
public Object getSecondValue() {
return secondValue;
}
public boolean isNoValue() {
return noValue;
}
public boolean isSingleValue() {
return singleValue;
}
public boolean isBetweenValue() {
return betweenValue;
}
public boolean isListValue() {
return listValue;
}
public String getTypeHandler() {
return typeHandler;
}
protected Criterion(String condition) {
super();
this.condition = condition;
this.typeHandler = null;
this.noValue = true;
}
protected Criterion(String condition, Object value, String typeHandler) {
super();
this.condition = condition;
this.value = value;
this.typeHandler = typeHandler;
if (value instanceof List<?>) {
this.listValue = true;
} else {
this.singleValue = true;
}
}
protected Criterion(String condition, Object value) {
this(condition, value, null);
}
protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
super();
this.condition = condition;
this.value = value;
this.secondValue = secondValue;
this.typeHandler = typeHandler;
this.betweenValue = true;
}
protected Criterion(String condition, Object value, Object secondValue) {
this(condition, value, secondValue, null);
}
}
}package com.xiaomifeng1010.mybatis.bean;
import java.util.ArrayList;
import java.util.List;
public class DepartmentExample {
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected String orderByClause;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected boolean distinct;
/**
* This field was generated by MyBatis Generator.
* This field corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected List<Criteria> oredCriteria;
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public DepartmentExample() {
oredCriteria = new ArrayList<Criteria>();
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setOrderByClause(String orderByClause) {
this.orderByClause = orderByClause;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public String getOrderByClause() {
return orderByClause;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void setDistinct(boolean distinct) {
this.distinct = distinct;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public boolean isDistinct() {
return distinct;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public List<Criteria> getOredCriteria() {
return oredCriteria;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void or(Criteria criteria) {
oredCriteria.add(criteria);
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public Criteria or() {
Criteria criteria = createCriteriaInternal();
oredCriteria.add(criteria);
return criteria;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public Criteria createCriteria() {
Criteria criteria = createCriteriaInternal();
if (oredCriteria.size() == 0) {
oredCriteria.add(criteria);
}
return criteria;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected Criteria createCriteriaInternal() {
Criteria criteria = new Criteria();
return criteria;
}
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public void clear() {
oredCriteria.clear();
orderByClause = null;
distinct = false;
}
/**
* This class was generated by MyBatis Generator.
* This class corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
protected abstract static class GeneratedCriteria {
protected List<Criterion> criteria;
protected GeneratedCriteria() {
super();
criteria = new ArrayList<Criterion>();
}
public boolean isValid() {
return criteria.size() > 0;
}
public List<Criterion> getAllCriteria() {
return criteria;
}
public List<Criterion> getCriteria() {
return criteria;
}
protected void addCriterion(String condition) {
if (condition == null) {
throw new RuntimeException("Value for condition cannot be null");
}
criteria.add(new Criterion(condition));
}
protected void addCriterion(String condition, Object value, String property) {
if (value == null) {
throw new RuntimeException("Value for " + property + " cannot be null");
}
criteria.add(new Criterion(condition, value));
}
protected void addCriterion(String condition, Object value1, Object value2, String property) {
if (value1 == null || value2 == null) {
throw new RuntimeException("Between values for " + property + " cannot be null");
}
criteria.add(new Criterion(condition, value1, value2));
}
public Criteria andIdIsNull() {
addCriterion("id is null");
return (Criteria) this;
}
public Criteria andIdIsNotNull() {
addCriterion("id is not null");
return (Criteria) this;
}
public Criteria andIdEqualTo(Integer value) {
addCriterion("id =", value, "id");
return (Criteria) this;
}
public Criteria andIdNotEqualTo(Integer value) {
addCriterion("id <>", value, "id");
return (Criteria) this;
}
public Criteria andIdGreaterThan(Integer value) {
addCriterion("id >", value, "id");
return (Criteria) this;
}
public Criteria andIdGreaterThanOrEqualTo(Integer value) {
addCriterion("id >=", value, "id");
return (Criteria) this;
}
public Criteria andIdLessThan(Integer value) {
addCriterion("id <", value, "id");
return (Criteria) this;
}
public Criteria andIdLessThanOrEqualTo(Integer value) {
addCriterion("id <=", value, "id");
return (Criteria) this;
}
public Criteria andIdIn(List<Integer> values) {
addCriterion("id in", values, "id");
return (Criteria) this;
}
public Criteria andIdNotIn(List<Integer> values) {
addCriterion("id not in", values, "id");
return (Criteria) this;
}
public Criteria andIdBetween(Integer value1, Integer value2) {
addCriterion("id between", value1, value2, "id");
return (Criteria) this;
}
public Criteria andIdNotBetween(Integer value1, Integer value2) {
addCriterion("id not between", value1, value2, "id");
return (Criteria) this;
}
public Criteria andDeptNameIsNull() {
addCriterion("dept_name is null");
return (Criteria) this;
}
public Criteria andDeptNameIsNotNull() {
addCriterion("dept_name is not null");
return (Criteria) this;
}
public Criteria andDeptNameEqualTo(String value) {
addCriterion("dept_name =", value, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameNotEqualTo(String value) {
addCriterion("dept_name <>", value, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameGreaterThan(String value) {
addCriterion("dept_name >", value, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameGreaterThanOrEqualTo(String value) {
addCriterion("dept_name >=", value, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameLessThan(String value) {
addCriterion("dept_name <", value, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameLessThanOrEqualTo(String value) {
addCriterion("dept_name <=", value, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameLike(String value) {
addCriterion("dept_name like", value, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameNotLike(String value) {
addCriterion("dept_name not like", value, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameIn(List<String> values) {
addCriterion("dept_name in", values, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameNotIn(List<String> values) {
addCriterion("dept_name not in", values, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameBetween(String value1, String value2) {
addCriterion("dept_name between", value1, value2, "deptName");
return (Criteria) this;
}
public Criteria andDeptNameNotBetween(String value1, String value2) {
addCriterion("dept_name not between", value1, value2, "deptName");
return (Criteria) this;
}
}
/**
* This class was generated by MyBatis Generator.
* This class corresponds to the database table tbl_dept
*
* @mbggenerated do_not_delete_during_merge Fri Oct 11 22:03:26 CST 2019
*/
public static class Criteria extends GeneratedCriteria {
protected Criteria() {
super();
}
}
/**
* This class was generated by MyBatis Generator.
* This class corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
public static class Criterion {
private String condition;
private Object value;
private Object secondValue;
private boolean noValue;
private boolean singleValue;
private boolean betweenValue;
private boolean listValue;
private String typeHandler;
public String getCondition() {
return condition;
}
public Object getValue() {
return value;
}
public Object getSecondValue() {
return secondValue;
}
public boolean isNoValue() {
return noValue;
}
public boolean isSingleValue() {
return singleValue;
}
public boolean isBetweenValue() {
return betweenValue;
}
public boolean isListValue() {
return listValue;
}
public String getTypeHandler() {
return typeHandler;
}
protected Criterion(String condition) {
super();
this.condition = condition;
this.typeHandler = null;
this.noValue = true;
}
protected Criterion(String condition, Object value, String typeHandler) {
super();
this.condition = condition;
this.value = value;
this.typeHandler = typeHandler;
if (value instanceof List<?>) {
this.listValue = true;
} else {
this.singleValue = true;
}
}
protected Criterion(String condition, Object value) {
this(condition, value, null);
}
protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
super();
this.condition = condition;
this.value = value;
this.secondValue = secondValue;
this.typeHandler = typeHandler;
this.betweenValue = true;
}
protected Criterion(String condition, Object value, Object secondValue) {
this(condition, value, secondValue, null);
}
}
}1.9.3 查看生成的dao接口（mybatis中称为mapper接口）
package com.xiaomifeng1010.mybatis.dao;
import com.xiaomifeng1010.mybatis.bean.Employee;
import com.xiaomifeng1010.mybatis.bean.EmployeeExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;
public interface EmployeeMapper {
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int countByExample(EmployeeExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int deleteByExample(EmployeeExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int deleteByPrimaryKey(Integer id);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int insert(Employee record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int insertSelective(Employee record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
List<Employee> selectByExample(EmployeeExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
Employee selectByPrimaryKey(Integer id);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int updateByExampleSelective(@Param("record") Employee record, @Param("example") EmployeeExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int updateByExample(@Param("record") Employee record, @Param("example") EmployeeExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int updateByPrimaryKeySelective(Employee record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_employee
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int updateByPrimaryKey(Employee record);
}package com.xiaomifeng1010.mybatis.dao;
import com.xiaomifeng1010.mybatis.bean.Department;
import com.xiaomifeng1010.mybatis.bean.DepartmentExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;
public interface DepartmentMapper {
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int countByExample(DepartmentExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int deleteByExample(DepartmentExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int deleteByPrimaryKey(Integer id);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int insert(Department record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int insertSelective(Department record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
List<Department> selectByExample(DepartmentExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
Department selectByPrimaryKey(Integer id);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int updateByExampleSelective(@Param("record") Department record, @Param("example") DepartmentExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int updateByExample(@Param("record") Department record, @Param("example") DepartmentExample example);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int updateByPrimaryKeySelective(Department record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table tbl_dept
*
* @mbggenerated Fri Oct 11 22:03:26 CST 2019
*/
int updateByPrimaryKey(Department record);
}1.9.4 查看生成的mapper.xml映射配置文件：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.xiaomifeng1010.mybatis.dao.EmployeeMapper" >
<resultMap id="BaseResultMap" type="com.xiaomifeng1010.mybatis.bean.Employee" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
<id column="id" property="id" jdbcType="INTEGER" />
<result column="last_name" property="lastName" jdbcType="VARCHAR" />
<result column="email" property="email" jdbcType="VARCHAR" />
<result column="gender" property="gender" jdbcType="VARCHAR" />
<result column="d_id" property="dId" jdbcType="INTEGER" />
</resultMap>
<sql id="Example_Where_Clause" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
<where >
<foreach collection="oredCriteria" item="criteria" separator="or" >
<if test="criteria.valid" >
<trim prefix="(" suffix=")" prefixOverrides="and" >
<foreach collection="criteria.criteria" item="criterion" >
<choose >
<when test="criterion.noValue" >
and ${criterion.condition}
</when>
<when test="criterion.singleValue" >
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue" >
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue" >
and ${criterion.condition}
<foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>
<sql id="Update_By_Example_Where_Clause" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
<where >
<foreach collection="example.oredCriteria" item="criteria" separator="or" >
<if test="criteria.valid" >
<trim prefix="(" suffix=")" prefixOverrides="and" >
<foreach collection="criteria.criteria" item="criterion" >
<choose >
<when test="criterion.noValue" >
and ${criterion.condition}
</when>
<when test="criterion.singleValue" >
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue" >
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue" >
and ${criterion.condition}
<foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>
<sql id="Base_Column_List" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
id, last_name, email, gender, d_id
</sql>
<select id="selectByExample" resultMap="BaseResultMap" parameterType="com.xiaomifeng1010.mybatis.bean.EmployeeExample" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
select
<if test="distinct" >
distinct
</if>
<include refid="Base_Column_List" />
from tbl_employee
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
<if test="orderByClause != null" >
order by ${orderByClause}
</if>
</select>
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
select
<include refid="Base_Column_List" />
from tbl_employee
where id = #{id,jdbcType=INTEGER}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
delete from tbl_employee
where id = #{id,jdbcType=INTEGER}
</delete>
<delete id="deleteByExample" parameterType="com.xiaomifeng1010.mybatis.bean.EmployeeExample" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
delete from tbl_employee
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</delete>
<insert id="insert" parameterType="com.xiaomifeng1010.mybatis.bean.Employee" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
insert into tbl_employee (id, last_name, email,
gender, d_id)
values (#{id,jdbcType=INTEGER}, #{lastName,jdbcType=VARCHAR}, #{email,jdbcType=VARCHAR},
#{gender,jdbcType=VARCHAR}, #{dId,jdbcType=INTEGER})
</insert>
<insert id="insertSelective" parameterType="com.xiaomifeng1010.mybatis.bean.Employee" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
insert into tbl_employee
<trim prefix="(" suffix=")" suffixOverrides="," >
<if test="id != null" >
id,
</if>
<if test="lastName != null" >
last_name,
</if>
<if test="email != null" >
email,
</if>
<if test="gender != null" >
gender,
</if>
<if test="dId != null" >
d_id,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides="," >
<if test="id != null" >
#{id,jdbcType=INTEGER},
</if>
<if test="lastName != null" >
#{lastName,jdbcType=VARCHAR},
</if>
<if test="email != null" >
#{email,jdbcType=VARCHAR},
</if>
<if test="gender != null" >
#{gender,jdbcType=VARCHAR},
</if>
<if test="dId != null" >
#{dId,jdbcType=INTEGER},
</if>
</trim>
</insert>
<select id="countByExample" parameterType="com.xiaomifeng1010.mybatis.bean.EmployeeExample" resultType="java.lang.Integer" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
select count(*) from tbl_employee
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</select>
<update id="updateByExampleSelective" parameterType="map" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
update tbl_employee
<set >
<if test="record.id != null" >
id = #{record.id,jdbcType=INTEGER},
</if>
<if test="record.lastName != null" >
last_name = #{record.lastName,jdbcType=VARCHAR},
</if>
<if test="record.email != null" >
email = #{record.email,jdbcType=VARCHAR},
</if>
<if test="record.gender != null" >
gender = #{record.gender,jdbcType=VARCHAR},
</if>
<if test="record.dId != null" >
d_id = #{record.dId,jdbcType=INTEGER},
</if>
</set>
<if test="_parameter != null" >
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByExample" parameterType="map" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
update tbl_employee
set id = #{record.id,jdbcType=INTEGER},
last_name = #{record.lastName,jdbcType=VARCHAR},
email = #{record.email,jdbcType=VARCHAR},
gender = #{record.gender,jdbcType=VARCHAR},
d_id = #{record.dId,jdbcType=INTEGER}
<if test="_parameter != null" >
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByPrimaryKeySelective" parameterType="com.xiaomifeng1010.mybatis.bean.Employee" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
update tbl_employee
<set >
<if test="lastName != null" >
last_name = #{lastName,jdbcType=VARCHAR},
</if>
<if test="email != null" >
email = #{email,jdbcType=VARCHAR},
</if>
<if test="gender != null" >
gender = #{gender,jdbcType=VARCHAR},
</if>
<if test="dId != null" >
d_id = #{dId,jdbcType=INTEGER},
</if>
</set>
where id = #{id,jdbcType=INTEGER}
</update>
<update id="updateByPrimaryKey" parameterType="com.xiaomifeng1010.mybatis.bean.Employee" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
update tbl_employee
set last_name = #{lastName,jdbcType=VARCHAR},
email = #{email,jdbcType=VARCHAR},
gender = #{gender,jdbcType=VARCHAR},
d_id = #{dId,jdbcType=INTEGER}
where id = #{id,jdbcType=INTEGER}
</update>
</mapper><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.xiaomifeng1010.mybatis.dao.DepartmentMapper" >
<resultMap id="BaseResultMap" type="com.xiaomifeng1010.mybatis.bean.Department" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
<id column="id" property="id" jdbcType="INTEGER" />
<result column="dept_name" property="deptName" jdbcType="VARCHAR" />
</resultMap>
<sql id="Example_Where_Clause" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
<where >
<foreach collection="oredCriteria" item="criteria" separator="or" >
<if test="criteria.valid" >
<trim prefix="(" suffix=")" prefixOverrides="and" >
<foreach collection="criteria.criteria" item="criterion" >
<choose >
<when test="criterion.noValue" >
and ${criterion.condition}
</when>
<when test="criterion.singleValue" >
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue" >
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue" >
and ${criterion.condition}
<foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>
<sql id="Update_By_Example_Where_Clause" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
<where >
<foreach collection="example.oredCriteria" item="criteria" separator="or" >
<if test="criteria.valid" >
<trim prefix="(" suffix=")" prefixOverrides="and" >
<foreach collection="criteria.criteria" item="criterion" >
<choose >
<when test="criterion.noValue" >
and ${criterion.condition}
</when>
<when test="criterion.singleValue" >
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue" >
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue" >
and ${criterion.condition}
<foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>
<sql id="Base_Column_List" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
id, dept_name
</sql>
<select id="selectByExample" resultMap="BaseResultMap" parameterType="com.xiaomifeng1010.mybatis.bean.DepartmentExample" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
select
<if test="distinct" >
distinct
</if>
<include refid="Base_Column_List" />
from tbl_dept
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
<if test="orderByClause != null" >
order by ${orderByClause}
</if>
</select>
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
select
<include refid="Base_Column_List" />
from tbl_dept
where id = #{id,jdbcType=INTEGER}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
delete from tbl_dept
where id = #{id,jdbcType=INTEGER}
</delete>
<delete id="deleteByExample" parameterType="com.xiaomifeng1010.mybatis.bean.DepartmentExample" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
delete from tbl_dept
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</delete>
<insert id="insert" parameterType="com.xiaomifeng1010.mybatis.bean.Department" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
insert into tbl_dept (id, dept_name)
values (#{id,jdbcType=INTEGER}, #{deptName,jdbcType=VARCHAR})
</insert>
<insert id="insertSelective" parameterType="com.xiaomifeng1010.mybatis.bean.Department" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
insert into tbl_dept
<trim prefix="(" suffix=")" suffixOverrides="," >
<if test="id != null" >
id,
</if>
<if test="deptName != null" >
dept_name,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides="," >
<if test="id != null" >
#{id,jdbcType=INTEGER},
</if>
<if test="deptName != null" >
#{deptName,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<select id="countByExample" parameterType="com.xiaomifeng1010.mybatis.bean.DepartmentExample" resultType="java.lang.Integer" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
select count(*) from tbl_dept
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</select>
<update id="updateByExampleSelective" parameterType="map" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
update tbl_dept
<set >
<if test="record.id != null" >
id = #{record.id,jdbcType=INTEGER},
</if>
<if test="record.deptName != null" >
dept_name = #{record.deptName,jdbcType=VARCHAR},
</if>
</set>
<if test="_parameter != null" >
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByExample" parameterType="map" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
update tbl_dept
set id = #{record.id,jdbcType=INTEGER},
dept_name = #{record.deptName,jdbcType=VARCHAR}
<if test="_parameter != null" >
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByPrimaryKeySelective" parameterType="com.xiaomifeng1010.mybatis.bean.Department" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
update tbl_dept
<set >
<if test="deptName != null" >
dept_name = #{deptName,jdbcType=VARCHAR},
</if>
</set>
where id = #{id,jdbcType=INTEGER}
</update>
<update id="updateByPrimaryKey" parameterType="com.xiaomifeng1010.mybatis.bean.Department" >
<!--
WARNING - @mbggenerated
This element is automatically generated by MyBatis Generator, do not modify.
This element was generated on Fri Oct 11 22:03:26 CST 2019.
-->
update tbl_dept
set dept_name = #{deptName,jdbcType=VARCHAR}
where id = #{id,jdbcType=INTEGER}
</update>
</mapper>可以看到mapper映射配置文件中，由生成器已经自动生成的增删改查语句。
二、测试增删改查
2.1 可以在数据表中插入一些数据，进行测试查询：
package com.xiaomifeng1010.mybatis.test;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;
import com.xiaomifeng1010.mybatis.bean.Employee;
import com.xiaomifeng1010.mybatis.bean.EmployeeExample;
import com.xiaomifeng1010.mybatis.bean.EmployeeExample.Criteria;
import com.xiaomifeng1010.mybatis.dao.EmployeeMapper;
public class MyBatisTest {
public SqlSessionFactory getSqlSessionFactory() throws IOException {
String resource = "mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
return new SqlSessionFactoryBuilder().build(inputStream);
}
@Test
public void testMbg() throws Exception {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("mbg.xml");
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
callback, warnings);
myBatisGenerator.generate(null);
}
@Test
public void testMyBatis3Simple() throws IOException{
SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();
SqlSession openSession = sqlSessionFactory.openSession();
try{
EmployeeMapper mapper = openSession.getMapper(EmployeeMapper.class);
List<Employee> list = mapper.selectByExample(null);
for (Employee employee : list) {
System.out.println(employee.getId());
}
}finally{
openSession.close();
}
}
@Test
public void testMyBatis3() throws IOException{
SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();
SqlSession openSession = sqlSessionFactory.openSession();
try{
EmployeeMapper mapper = openSession.getMapper(EmployeeMapper.class);
//xxxExample就是封装查询条件的
//1、查询所有
//List<Employee> emps = mapper.selectByExample(null);
//2、查询员工名字中有e字母的，和员工性别是1的
//封装员工查询条件的example
EmployeeExample example = new EmployeeExample();
//通过example对象创建Criteria对象，这个Criteria就是拼装查询条件
//select id, last_name, email, gender, d_id from tbl_employee
//WHERE ( last_name like ? and gender = ? ) or email like "%e%"
Criteria criteria = example.createCriteria();
criteria.andLastNameLike("%e%");
criteria.andGenderEqualTo("1");
Criteria criteria2 = example.createCriteria();
criteria2.andEmailLike("%e%");
//使用OR 关键词组装两个Criteria 对象
example.or(criteria2);
List<Employee> list = mapper.selectByExample(example);
for (Employee employee : list) {
System.out.println(employee.getId());
}
}finally{
openSession.close();
}
}
}
