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这个博客介绍在spring boot项目中使用genarator生成mybatis代码,并且配合使用通用mapper
在pom.xml中添加依赖:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.hf</groupId>
<artifactId>common-mapper</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>common-mapper</name>
<description>mybatis通用mapper使用</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--common mapper dependency start-->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>1.2.4</version>
</dependency>
<!--common mapper dependency end-->
<!--pagehelper 分页插件-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.3</version>
</dependency>
<!--pagehelper 分页插件-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.29</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!--自动生成mybatis 插件-->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<!-- 指定插件运行的generator.xml文件位置-->
<configurationFile>src/main/resources/generator/generatorConfig.xml</configurationFile>
<!-- 允许移动生成的文件-->
<verbose>true</verbose>
<!-- 允许覆盖生成的文件-->
<overwrite>true</overwrite>
</configuration>
<executions>
<execution>
<id>Generate MyBatis Artifacts</id>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>
<!--如果在genaratorConfig.xml配置了TKmybatis配置 通用插件的配置,需要在这里指定tk插件的版本,版本和上面引入的依赖一样-->
<!--在genaratorConfig.xm配置TK插件,能在生成实体类的时候,字段生成注解如:@Id,这是为通用mapper使用的-->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>1.2.4</version>
</dependency>
</dependencies>
</plugin>
<!--自动生成mybatis插件-->
</plugins>
</build>
</project>
特别需要注意插件的配置,截取插件的配置如下:
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!--自动生成mybatis 插件-->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<!-- 指定插件运行的generator.xml文件位置-->
<configurationFile>src/main/resources/generator/generatorConfig.xml</configurationFile>
<!-- 允许移动生成的文件-->
<verbose>true</verbose>
<!-- 允许覆盖生成的文件-->
<overwrite>true</overwrite>
</configuration>
<executions>
<execution>
<id>Generate MyBatis Artifacts</id>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>
<!--如果在genaratorConfig.xml配置了TKmybatis配置 通用插件的配置,需要在这里指定tk插件的版本,版本和上面引入的依赖一样-->
<!--在genaratorConfig.xm配置TK插件,能在生成实体类的时候,字段生成注解如:@Id,这是为通用mapper使用的-->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>1.2.4</version>
</dependency>
</dependencies>
</plugin>
<!--自动生成mybatis插件-->
</plugins>
</build>需要注意点:
1.指定插件的位置:如下截图
实际存放的位置如下:
2.需要在插件中增加tk的依赖,如下:
原因是在generatorConfig.xml中配置了如下:
下面是generatorConfig.xml的配置
关于generatorConfig.xml的具体配置,已经每个配置的含义,可以查看文档:
<?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>
<!--数据库驱动jar -->
<classPathEntry location="D:\desoft\maven\repository\mysql\mysql-connector-java\5.1.17\mysql-connector-java-5.1.17.jar" />
<context id="Tables" targetRuntime="MyBatis3">
<!-- 通用mapper插件配置 -->
<!--在genaratorConfig.xm配置TK插件,能在生成实体类的时候,字段生成注解如:@Id,这是为通用mapper使用的-->
<property name="javaFileEncoding" value="UTF-8"/>
<property name="beginningDelimiter" value="`"/>
<property name="endingDelimiter" value="`"/>
<plugin type="tk.mybatis.mapper.generator.MapperPlugin">
<!--注意这里需要预先指定写好的通用mapper接口,自动生成的接口全部继承这个接口,并且在扫描mapper的时候,这个类不能被扫描到的-->
<property name="mappers" value="com.hf.commonmapper.common.BaseMapper"/>
</plugin>
<!-- 通用mapper插件配置 -->
<!-- optional，旨在创建class时，对注释进行控制 -->
<commentGenerator>
<property name="suppressDate" value="false"/>
<property name="suppressAllComments" value="false"/>
</commentGenerator>
<!--数据库连接 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/ccclubs_t3" userId="root"
password="root">
</jdbcConnection>
<!--默认false Java type resolver will always use java.math.BigDecimal if
the database column is of type DECIMAL or NUMERIC. -->
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!--生成实体类 指定包名 以及生成的地址 （可以自定义地址，但是路径不存在不会自动创建 使用Maven生成在target目录下，会自动创建） -->
<javaModelGenerator targetPackage="com.hf.commonmapper.model"
targetProject="D:\ideawks\common-mapper\src\main\java">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!--生成mapper.xml文件路径 -->
<sqlMapGenerator targetPackage="mapper"
targetProject="D:\ideawks\common-mapper\src\main\java">
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<!--生成mapper接口文件 可以配置 type="XMLMAPPER"生成xml的dao实现 context id="DB2Tables" 修改targetRuntime="MyBatis3" -->
<!--targetProject指定项目的路径，可以是相对路径，到java目录位置-->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.hf.commonmapper.mapper"
targetProject="D:\ideawks\common-mapper\src\main\java">
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!--对应数据库表 mysql可以加入主键自增 字段命名 忽略某字段等,这个只能配置单表,配置几张表就需要几个这个配置项 -->
<!-- <table tableName="t_system_city" domainObjectName="TsystemCity" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />-->
<!--如果需要生成改数据库中所有的表的话,用如下的配置-->
<table tableName="%" />
</context>
</generatorConfiguration>
需要注意点:
1.配置通用mapper插件,为了生存的实体类中含有注解(因为通用mapper必须使用有注解的实体类)
如下:
图中指定了通用mapper所在接口,如下图:
需要先写好这个接口,如下: 可以看到其实就是一个空接口
package com.hf.commonmapper.common;
import tk.mybatis.mapper.common.Mapper;
import tk.mybatis.mapper.common.MySqlMapper;
/**
* @Description:
* @Date: 2019/5/7
* @Auther:
*/
public interface BaseMapper<T>{
}
2.如果需要生成指定数据库的所有表的话,用下面的配置
<table>这里用的通配符匹配全部的表，另外所有表都有自动增长的id字段。如果不是所有表的配置都一样，可以做针对性的配置。 如下
<table tableName="%">
<generatedKey column="id" sqlStatement="Mysql"/>
</table>配置好了之后,直接运行插件:
可以看到执行成功了:
查看实体类和mapper以及xml
如下图,实体类已经全部生成,并且带上了我们需要的注解
生成的mapper接口如下:
可以看到每个mapper都自动有一些方法了,并且都继承了自定义的通用Mapper BaseMapper这个接口
我们在来看看生成的xml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.hf.commonmapper.mapper.SpvScheduleLogMapper" >
<resultMap id="BaseResultMap" type="com.hf.commonmapper.model.SpvScheduleLog" >
<!--
WARNING - @mbg.generated
-->
<id column="uuid" property="uuid" jdbcType="CHAR" />
<result column="created_on" property="createdOn" jdbcType="TIMESTAMP" />
<result column="created_by" property="createdBy" jdbcType="CHAR" />
<result column="updated_on" property="updatedOn" jdbcType="TIMESTAMP" />
<result column="updated_by" property="updatedBy" jdbcType="CHAR" />
<result column="version" property="version" jdbcType="INTEGER" />
<result column="group_code" property="groupCode" jdbcType="VARCHAR" />
<result column="batch_no" property="batchNo" jdbcType="VARCHAR" />
<result column="batch_result" property="batchResult" jdbcType="VARCHAR" />
<result column="main_uuid" property="mainUuid" jdbcType="CHAR" />
<result column="main_table" property="mainTable" jdbcType="VARCHAR" />
<result column="schedule_name" property="scheduleName" jdbcType="VARCHAR" />
<result column="schedule_description" property="scheduleDescription" jdbcType="VARCHAR" />
<result column="schedule_sql" property="scheduleSql" jdbcType="VARCHAR" />
<result column="params_str" property="paramsStr" jdbcType="OTHER" />
<result column="interface_url" property="interfaceUrl" jdbcType="VARCHAR" />
<result column="interface_result" property="interfaceResult" jdbcType="VARCHAR" />
<result column="retry_count" property="retryCount" jdbcType="INTEGER" />
<result column="status" property="status" jdbcType="INTEGER" />
<result column="request_time" property="requestTime" jdbcType="TIMESTAMP" />
<result column="response_time" property="responseTime" jdbcType="TIMESTAMP" />
</resultMap>
<sql id="Example_Where_Clause" >
<!--
WARNING - @mbg.generated
-->
<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 - @mbg.generated
-->
<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 - @mbg.generated
-->
uuid, created_on, created_by, updated_on, updated_by, version, group_code, batch_no,
batch_result, main_uuid, main_table, schedule_name, schedule_description, schedule_sql,
params_str, interface_url, interface_result, retry_count, status, request_time, response_time
</sql>
<select id="selectByExample" resultMap="BaseResultMap" parameterType="com.hf.commonmapper.model.SpvScheduleLogExample" >
<!--
WARNING - @mbg.generated
-->
select
<if test="distinct" >
distinct
</if>
<include refid="Base_Column_List" />
from spv_schedule_log
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
<if test="orderByClause != null" >
order by ${orderByClause}
</if>
</select>
<delete id="deleteByExample" parameterType="com.hf.commonmapper.model.SpvScheduleLogExample" >
<!--
WARNING - @mbg.generated
-->
delete from spv_schedule_log
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</delete>
<select id="countByExample" parameterType="com.hf.commonmapper.model.SpvScheduleLogExample" resultType="java.lang.Integer" >
<!--
WARNING - @mbg.generated
-->
select count(*) from spv_schedule_log
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</select>
<update id="updateByExampleSelective" parameterType="map" >
<!--
WARNING - @mbg.generated
-->
update spv_schedule_log
<set >
<if test="record.uuid != null" >
uuid = #{record.uuid,jdbcType=CHAR},
</if>
<if test="record.createdOn != null" >
created_on = #{record.createdOn,jdbcType=TIMESTAMP},
</if>
<if test="record.createdBy != null" >
created_by = #{record.createdBy,jdbcType=CHAR},
</if>
<if test="record.updatedOn != null" >
updated_on = #{record.updatedOn,jdbcType=TIMESTAMP},
</if>
<if test="record.updatedBy != null" >
updated_by = #{record.updatedBy,jdbcType=CHAR},
</if>
<if test="record.version != null" >
version = #{record.version,jdbcType=INTEGER},
</if>
<if test="record.groupCode != null" >
group_code = #{record.groupCode,jdbcType=VARCHAR},
</if>
<if test="record.batchNo != null" >
batch_no = #{record.batchNo,jdbcType=VARCHAR},
</if>
<if test="record.batchResult != null" >
batch_result = #{record.batchResult,jdbcType=VARCHAR},
</if>
<if test="record.mainUuid != null" >
main_uuid = #{record.mainUuid,jdbcType=CHAR},
</if>
<if test="record.mainTable != null" >
main_table = #{record.mainTable,jdbcType=VARCHAR},
</if>
<if test="record.scheduleName != null" >
schedule_name = #{record.scheduleName,jdbcType=VARCHAR},
</if>
<if test="record.scheduleDescription != null" >
schedule_description = #{record.scheduleDescription,jdbcType=VARCHAR},
</if>
<if test="record.scheduleSql != null" >
schedule_sql = #{record.scheduleSql,jdbcType=VARCHAR},
</if>
<if test="record.paramsStr != null" >
params_str = #{record.paramsStr,jdbcType=OTHER},
</if>
<if test="record.interfaceUrl != null" >
interface_url = #{record.interfaceUrl,jdbcType=VARCHAR},
</if>
<if test="record.interfaceResult != null" >
interface_result = #{record.interfaceResult,jdbcType=VARCHAR},
</if>
<if test="record.retryCount != null" >
retry_count = #{record.retryCount,jdbcType=INTEGER},
</if>
<if test="record.status != null" >
status = #{record.status,jdbcType=INTEGER},
</if>
<if test="record.requestTime != null" >
request_time = #{record.requestTime,jdbcType=TIMESTAMP},
</if>
<if test="record.responseTime != null" >
response_time = #{record.responseTime,jdbcType=TIMESTAMP},
</if>
</set>
<if test="_parameter != null" >
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByExample" parameterType="map" >
<!--
WARNING - @mbg.generated
-->
update spv_schedule_log
set uuid = #{record.uuid,jdbcType=CHAR},
created_on = #{record.createdOn,jdbcType=TIMESTAMP},
created_by = #{record.createdBy,jdbcType=CHAR},
updated_on = #{record.updatedOn,jdbcType=TIMESTAMP},
updated_by = #{record.updatedBy,jdbcType=CHAR},
version = #{record.version,jdbcType=INTEGER},
group_code = #{record.groupCode,jdbcType=VARCHAR},
batch_no = #{record.batchNo,jdbcType=VARCHAR},
batch_result = #{record.batchResult,jdbcType=VARCHAR},
main_uuid = #{record.mainUuid,jdbcType=CHAR},
main_table = #{record.mainTable,jdbcType=VARCHAR},
schedule_name = #{record.scheduleName,jdbcType=VARCHAR},
schedule_description = #{record.scheduleDescription,jdbcType=VARCHAR},
schedule_sql = #{record.scheduleSql,jdbcType=VARCHAR},
params_str = #{record.paramsStr,jdbcType=OTHER},
interface_url = #{record.interfaceUrl,jdbcType=VARCHAR},
interface_result = #{record.interfaceResult,jdbcType=VARCHAR},
retry_count = #{record.retryCount,jdbcType=INTEGER},
status = #{record.status,jdbcType=INTEGER},
request_time = #{record.requestTime,jdbcType=TIMESTAMP},
response_time = #{record.responseTime,jdbcType=TIMESTAMP}
<if test="_parameter != null" >
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
</mapper>可以看到也是自动生成了
下面我们开始配置怎么使用:
配置application.yml
#Mysql配置
spring:
datasource:
url: jdbc:mysql://localhost:3306/ccclubs_t3?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC #配置数据库的路径
username: root
password: root
type: com.alibaba.druid.pool.DruidDataSource #这个可以看一下 https://blog.csdn.net/qq_27191423/article/details/79146855
druid:
driver-class-name: com.mysql.jdbc.Driver
filters: stat
maxActive: 20 #连接池的最大值，同一时间可以从池分配的最多连接数量，0时无限制
initialSize: 1 #连接初始值，连接池启动时创建的连接数量的初始值
maxWait: 60000
minIdle: 1 #最小空闲值.当空闲的连接数少于阀值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: select 'x'
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true #是否对已备语句进行池管理（布尔值），是否对PreparedStatement进行缓存
maxOpenPreparedStatements: 20
#mybatis 配置
mybatis:
mapper-locations: classpath*:mapper/*.xml #指定xml所在的路径
type-aliases-package: com.hf.commonmapper.model #指定实体类所在包路径
configuration:
map-underscore-to-camel-case: true #驼峰开启
#通用mapper配置
mapper:
mappers: com.hf.commonmapper.common.BaseMapper #需要指定通用mapper所在的类
not-empty: false
identity: MYSQL
#mybatis打印sql日志
logging:
level:
com.hf.commonmapper.mapper: debug #key为mapper文件所在的包路径,好像只有debug有效额
#pagehelper分页插件
pagehelper:
helperDialect: mysql
reasonable: true
supportMethodsArguments: true
params:
count: countSql
需要在启动类中扫描mapper接口包路径,注意这个扫描一定不能扫描到通用mapper所在的路径,并且@MapperScan注解必须是tk.mybatis下面的注解,而不能是mybatis的注解
启动类如下:
package com.hf.commonmapper;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import tk.mybatis.spring.annotation.MapperScan;
@SpringBootApplication
@MapperScan("com.hf.commonmapper.mapper") //特别需要注意@MapperScan这个注解必须是tk.mybatis这个包下面的,而不是mybatis下面的,别导错了
public class CommonMapperApplication {
public static void main(String[] args) {
SpringApplication.run(CommonMapperApplication.class, args);
}
}
以上的配置都完成了,下面测试:
package com.hf.commonmapper.service;
import com.hf.commonmapper.model.SpvScheduleLog;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import service.SpvScheduleLogService;
import java.util.List;
/**
* @Description:
* @Date: 2019/5/7
* @Auther: wm yu
*/
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpvScheduleLogServiceTest {
@Autowired
private SpvScheduleLogService spvScheduleLogService;
@Test
public void queryAll(){
List<SpvScheduleLog> logs = spvScheduleLogService.queryAll();
System.out.println(logs);
}
}
service接口:
package com.hf.commonmapper.service;
import com.hf.commonmapper.model.SpvScheduleLog;
import java.util.List;
/**
* @Description:
* @Date: 2019/5/7
* @Auther:
*/
public interface SpvScheduleLogService {
List<SpvScheduleLog> queryAll();
}
实现类接口:
package com.hf.commonmapper.service.impl;
import com.hf.commonmapper.mapper.SpvScheduleLogMapper;
import com.hf.commonmapper.model.SpvScheduleLog;
import com.hf.commonmapper.model.SpvScheduleLogExample;
import com.hf.commonmapper.service.SpvScheduleLogService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* @Description:
* @Date: 2019/5/7
* @Auther:
*/
@Slf4j
@Service
public class SpvScheduleLogServiceImpl implements SpvScheduleLogService {
@Autowired
private SpvScheduleLogMapper spvScheduleLogMapper;
@Override
public List<SpvScheduleLog> queryAll() {
SpvScheduleLogExample example = new SpvScheduleLogExample();
List<SpvScheduleLog> logs = spvScheduleLogMapper.selectByExample(example);
return logs;
}
}
debug输出结果如下:
可以看到在debug状态下,sql已经显示出来了,并且结果也查询出来了
以上就是在spring boot中结合mybatis的generator和通用mapper的使用
其实上面的可以修改一下,使其更简单,方法如下:
首先,将通用mapper的接口类,也就是我们定义的BaseMapper去继承2个tk中的接口,如下
package com.hf.commonmapper.common;
import tk.mybatis.mapper.common.Mapper;
import tk.mybatis.mapper.common.MySqlMapper;
/**
* @Description:
* @Date: 2019/5/7
* @Auther:
*/
public interface BaseMapper<T> extends Mapper<T>, MySqlMapper<T> {
}
这个时候,如果你直接去启动项目的话,会报错,大概是说在mapper接口和对应的xml文件中已经存在下面的这些方法了
为什么呢?
原因很简单,在你继承的接口Mapper<T>, MySqlMapper<T>中已经存在封装好了这些方法了,而mybatis的mapper接口中是使用方法名作为statementId,也就是必须唯一标识,所以你需要去掉所有自动生成的方法和对应的xml 配置,此时你在启动的时候就一样了
如下:
package com.hf.commonmapper.mapper;
import com.hf.commonmapper.common.BaseMapper;
import com.hf.commonmapper.model.SpvScheduleLog;
public interface SpvScheduleLogMapper extends BaseMapper<SpvScheduleLog> {
/*int countByExample(SpvScheduleLogExample example);
int deleteByExample(SpvScheduleLogExample example);
List<SpvScheduleLog> selectByExample(SpvScheduleLogExample example);
int updateByExampleSelective(@Param("record") SpvScheduleLog record, @Param("example") SpvScheduleLogExample example);
int updateByExample(@Param("record") SpvScheduleLog record, @Param("example") SpvScheduleLogExample example);*/
}<?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.hf.commonmapper.mapper.SpvScheduleLogMapper" >
<resultMap id="BaseResultMap" type="com.hf.commonmapper.model.SpvScheduleLog" >
<!--
WARNING - @mbg.generated
-->
<id column="uuid" property="uuid" jdbcType="CHAR" />
<result column="created_on" property="createdOn" jdbcType="TIMESTAMP" />
<result column="created_by" property="createdBy" jdbcType="CHAR" />
<result column="updated_on" property="updatedOn" jdbcType="TIMESTAMP" />
<result column="updated_by" property="updatedBy" jdbcType="CHAR" />
<result column="version" property="version" jdbcType="INTEGER" />
<result column="group_code" property="groupCode" jdbcType="VARCHAR" />
<result column="batch_no" property="batchNo" jdbcType="VARCHAR" />
<result column="batch_result" property="batchResult" jdbcType="VARCHAR" />
<result column="main_uuid" property="mainUuid" jdbcType="CHAR" />
<result column="main_table" property="mainTable" jdbcType="VARCHAR" />
<result column="schedule_name" property="scheduleName" jdbcType="VARCHAR" />
<result column="schedule_description" property="scheduleDescription" jdbcType="VARCHAR" />
<result column="schedule_sql" property="scheduleSql" jdbcType="VARCHAR" />
<result column="params_str" property="paramsStr" jdbcType="OTHER" />
<result column="interface_url" property="interfaceUrl" jdbcType="VARCHAR" />
<result column="interface_result" property="interfaceResult" jdbcType="VARCHAR" />
<result column="retry_count" property="retryCount" jdbcType="INTEGER" />
<result column="status" property="status" jdbcType="INTEGER" />
<result column="request_time" property="requestTime" jdbcType="TIMESTAMP" />
<result column="response_time" property="responseTime" jdbcType="TIMESTAMP" />
</resultMap>
<sql id="Example_Where_Clause" >
<!--
WARNING - @mbg.generated
-->
<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 - @mbg.generated
-->
<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 - @mbg.generated
-->
uuid, created_on, created_by, updated_on, updated_by, version, group_code, batch_no,
batch_result, main_uuid, main_table, schedule_name, schedule_description, schedule_sql,
params_str, interface_url, interface_result, retry_count, status, request_time, response_time
</sql>
<!--<select id="selectByExample" resultMap="BaseResultMap" parameterType="com.hf.commonmapper.model.SpvScheduleLogExample" >
<!–
WARNING - @mbg.generated
–>
select
<if test="distinct" >
distinct
</if>
<include refid="Base_Column_List" />
from spv_schedule_log
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
<if test="orderByClause != null" >
order by ${orderByClause}
</if>
</select>
<delete id="deleteByExample" parameterType="com.hf.commonmapper.model.SpvScheduleLogExample" >
<!–
WARNING - @mbg.generated
–>
delete from spv_schedule_log
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</delete>
<select id="countByExample" parameterType="com.hf.commonmapper.model.SpvScheduleLogExample" resultType="java.lang.Integer" >
<!–
WARNING - @mbg.generated
–>
select count(*) from spv_schedule_log
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</select>
<update id="updateByExampleSelective" parameterType="map" >
<!–
WARNING - @mbg.generated
–>
update spv_schedule_log
<set >
<if test="record.uuid != null" >
uuid = #{record.uuid,jdbcType=CHAR},
</if>
<if test="record.createdOn != null" >
created_on = #{record.createdOn,jdbcType=TIMESTAMP},
</if>
<if test="record.createdBy != null" >
created_by = #{record.createdBy,jdbcType=CHAR},
</if>
<if test="record.updatedOn != null" >
updated_on = #{record.updatedOn,jdbcType=TIMESTAMP},
</if>
<if test="record.updatedBy != null" >
updated_by = #{record.updatedBy,jdbcType=CHAR},
</if>
<if test="record.version != null" >
version = #{record.version,jdbcType=INTEGER},
</if>
<if test="record.groupCode != null" >
group_code = #{record.groupCode,jdbcType=VARCHAR},
</if>
<if test="record.batchNo != null" >
batch_no = #{record.batchNo,jdbcType=VARCHAR},
</if>
<if test="record.batchResult != null" >
batch_result = #{record.batchResult,jdbcType=VARCHAR},
</if>
<if test="record.mainUuid != null" >
main_uuid = #{record.mainUuid,jdbcType=CHAR},
</if>
<if test="record.mainTable != null" >
main_table = #{record.mainTable,jdbcType=VARCHAR},
</if>
<if test="record.scheduleName != null" >
schedule_name = #{record.scheduleName,jdbcType=VARCHAR},
</if>
<if test="record.scheduleDescription != null" >
schedule_description = #{record.scheduleDescription,jdbcType=VARCHAR},
</if>
<if test="record.scheduleSql != null" >
schedule_sql = #{record.scheduleSql,jdbcType=VARCHAR},
</if>
<if test="record.paramsStr != null" >
params_str = #{record.paramsStr,jdbcType=OTHER},
</if>
<if test="record.interfaceUrl != null" >
interface_url = #{record.interfaceUrl,jdbcType=VARCHAR},
</if>
<if test="record.interfaceResult != null" >
interface_result = #{record.interfaceResult,jdbcType=VARCHAR},
</if>
<if test="record.retryCount != null" >
retry_count = #{record.retryCount,jdbcType=INTEGER},
</if>
<if test="record.status != null" >
status = #{record.status,jdbcType=INTEGER},
</if>
<if test="record.requestTime != null" >
request_time = #{record.requestTime,jdbcType=TIMESTAMP},
</if>
<if test="record.responseTime != null" >
response_time = #{record.responseTime,jdbcType=TIMESTAMP},
</if>
</set>
<if test="_parameter != null" >
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByExample" parameterType="map" >
<!–
WARNING - @mbg.generated
–>
update spv_schedule_log
set uuid = #{record.uuid,jdbcType=CHAR},
created_on = #{record.createdOn,jdbcType=TIMESTAMP},
created_by = #{record.createdBy,jdbcType=CHAR},
updated_on = #{record.updatedOn,jdbcType=TIMESTAMP},
updated_by = #{record.updatedBy,jdbcType=CHAR},
version = #{record.version,jdbcType=INTEGER},
group_code = #{record.groupCode,jdbcType=VARCHAR},
batch_no = #{record.batchNo,jdbcType=VARCHAR},
batch_result = #{record.batchResult,jdbcType=VARCHAR},
main_uuid = #{record.mainUuid,jdbcType=CHAR},
main_table = #{record.mainTable,jdbcType=VARCHAR},
schedule_name = #{record.scheduleName,jdbcType=VARCHAR},
schedule_description = #{record.scheduleDescription,jdbcType=VARCHAR},
schedule_sql = #{record.scheduleSql,jdbcType=VARCHAR},
params_str = #{record.paramsStr,jdbcType=OTHER},
interface_url = #{record.interfaceUrl,jdbcType=VARCHAR},
interface_result = #{record.interfaceResult,jdbcType=VARCHAR},
retry_count = #{record.retryCount,jdbcType=INTEGER},
status = #{record.status,jdbcType=INTEGER},
request_time = #{record.requestTime,jdbcType=TIMESTAMP},
response_time = #{record.responseTime,jdbcType=TIMESTAMP}
<if test="_parameter != null" >
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>-->
</mapper>如上面将其全部注释掉,在测试发现效果是一样的...
好了,这篇博客就先到这里了,完成!