配置环境
- Intellij IDEA 2018.1
- springboot: 2.0.3.RELEASE
- jdk:1.8.0_181
- maven:3.3.9
1.创建SpringBoot项目
选了3项 Web Mysql mybatis
2.添加依赖 详见pom.xml
<?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>
<groupId>com.csdj</groupId>
<artifactId>kiko</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>kiko</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<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>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- 支持 @ConfigurationProperties 注解 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<!-- 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-maven-plugin -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.6</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- mybatis generator 自动生成代码插件 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.6</version>
<configuration>
<configurationFile>${basedir}/src/main/resources/mybatis/generatorConfig.xml</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration>
</plugin>
</plugins>
</build>
</project>
增加
mybatis generator依赖
3.配置springBoot文件
#服务器端口
server.port=8080
#数据库配置 8.0.11版
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/wx?characterEncoding=UTF-8&serverTimezone=Hongkong&useSSL=false&autoReconnect=true&failOverReadOnly=false
spring.datasource.username=root
spring.datasource.password=root
#使用alibaba的druid数据库连接池
#mybatis配置
#实体类
mybatis.type-aliases-package=xxx.model
#对应配置文件
mybatis.mapper-locations=classpath:mapping/*.xml
#日志插件
logging.pattern.console="%d *** %msg%n"
logging.file=logging/kiko.log
4.配置自动生成 Dao层和model层文件配置
<?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">
<!-- 配置生成器 -->
<generatorConfiguration>
<properties resource="application.properties"/>
<!--
context:生成一组对象的环境
id:必选,上下文id,用于在生成错误时提示
defaultModelType:指定生成对象的样式
1,conditional:类似hierarchical;
2,flat:所有内容(主键,blob)等全部生成在一个对象中;
3,hierarchical:主键生成一个XXKey对象(key class),Blob等单独生成一个对象,其他简单属性在一个对象中(record class)
targetRuntime:
1,MyBatis3:默认的值,生成基于MyBatis3.x以上版本的内容,包括XXXBySample;
2,MyBatis3Simple:类似MyBatis3,只是不生成XXXBySample;
introspectedColumnImpl:类全限定名,用于扩展MBG
-->
<classPathEntry location="C:\Users\Administrator\.m2\repository\mysql\mysql-connector-java\8.0.11\mysql-connector-java-8.0.11.jar"/>
<context id="mysql" targetRuntime="MyBatis3Simple">
<!-- 自动识别数据库关键字,默认false,如果设置为true,根据SqlReservedWords中定义的关键字列表;
一般保留默认值,遇到数据库关键字(Java关键字),使用columnOverride覆盖
-->
<property name="autoDelimitKeywords" value="false"/>
<!-- 生成的Java文件的编码 -->
<property name="javaFileEncoding" value="UTF-8"/>
<!-- 格式化java代码 -->
<property name="javaFormatter" value="org.mybatis.generator.api.dom.DefaultJavaFormatter"/>
<!-- 格式化XML代码 -->
<property name="xmlFormatter" value="org.mybatis.generator.api.dom.DefaultXmlFormatter"/>
<!-- beginningDelimiter和endingDelimiter:指明数据库的用于标记数据库对象名的符号,比如ORACLE就是双引号,MYSQL默认是`反引号; -->
<property name="beginningDelimiter" value="`"/>
<property name="endingDelimiter" value="`"/>
<commentGenerator>
<property name="suppressDate" value="true"/>
<!-- 是否去除自动生成的注释 true:是 : false:否 -->
<property name="suppressAllComments" value="false"/>
</commentGenerator>
<jdbcConnection driverClass="${spring.datasource.driver-class-name}"
connectionURL="${spring.datasource.url}" userId="${spring.datasource.username}" password="${spring.datasource.password}"/>
<!-- java类型处理器
用于处理DB中的类型到Java中的类型,默认使用JavaTypeResolverDefaultImpl;
注意一点,默认会先尝试使用Integer,Long,Short等来对应DECIMAL和 NUMERIC数据类型;
-->
<javaTypeResolver type="org.mybatis.generator.internal.types.JavaTypeResolverDefaultImpl">
<!--
true:使用BigDecimal对应DECIMAL和 NUMERIC数据类型
false:默认,
scale>0;length>18:使用BigDecimal;
scale=0;length[10,18]:使用Long;
scale=0;length[5,9]:使用Integer;
scale=0;length<5:使用Short;
-->
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!--自动生成的实体的存放包路径 -->
<javaModelGenerator
targetPackage="com.csdj.kiko.model"
targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!--自动生成的*Mapper.xml文件存放路径 -->
<sqlMapGenerator
targetPackage="mapping"
targetProject="src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<!--自动生成的*Mapper.java存放路径 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.csdj.kiko.dao" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<table tableName="product_info"
domainObjectName="productInfo"
enableCountByExample="false"
enableUpdateByExample="false"
enableDeleteByExample="false"
enableSelectByExample="false"
selectByExampleQueryId="false">
</table>
</context>
</generatorConfiguration>
点击run-Edit Configurations 配置generator运行
点+号再选择maven 再在Command line:写入命令
mybatis-generator:generate -e
保存