1：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>2.1.5.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.dev</groupId> <artifactId>devloper-mine</artifactId> <version>0.0.1-SNAPSHOT</version> <name>devloper-mine</name> <description>dev project for Spring Boot</description> <properties> <java.version>1.8</java.version> <!-- MyBatis Generator --> <!-- Java接口和实体类 --> <targetJavaProject>${basedir}/src/main/java</targetJavaProject> <targetMapperPackage>com.dev.mapper.repositry</targetMapperPackage> <targetModelPackage>com.dev.model</targetModelPackage> <!-- XML生成路径 --> <targetResourcesProject>${basedir}/src/main/resources</targetResourcesProject> <targetXMLPackage>mapper</targetXMLPackage> <!-- 通用mapper --> <tk.mybatis.version>4.1.5</tk.mybatis.version> <persistence.version>1.0.2</persistence.version> <mapper.plugin>tk.mybatis.mapper.generator.MapperPlugin</mapper.plugin> <mapper.Mapper>tk.mybatis.mapper.common.Mapper</mapper.Mapper> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!-- https://mvnrepository.com/artifact/tk.mybatis/mapper-spring-boot-starter --> <!-- 通用 mapper --> <dependency> <groupId>tk.mybatis</groupId> <artifactId>mapper</artifactId> <version>${tk.mybatis.version}</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.persistence/persistence-api --> <!-- @entity 注解 --> <dependency> <groupId>javax.persistence</groupId> <artifactId>persistence-api</artifactId> <version>${persistence.version}</version> </dependency> <!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter --> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.0.1</version> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.17</version> </dependency> <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.16</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> </configuration> </plugin> <!--mybatis-generator插件--> <plugin> <!--Mybatis-generator插件,用于自动生成Mapper和POJO--> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.7</version> <configuration> <!--配置文件的位置 一定要改成配置文件的位置--> <configurationFile>src/main/resources/mybatis-generator/generator-config.xml</configurationFile> <!-- 覆盖 --> <verbose>true</verbose> <!-- 重写 --> <overwrite>true</overwrite> </configuration> <dependencies> <!-- https://mvnrepository.com/artifact/tk.mybatis/mapper --> <dependency> <groupId>tk.mybatis</groupId> <artifactId>mapper</artifactId> <version>${tk.mybatis.version}</version> </dependency> </dependencies> </plugin> </plugins> </build> </project>
notice1：使用了 mybatis-generator+通用mapper 可以生成model、mapper、mapper.xml文件，但是若不加mybatis的依赖生成的文件会报错...
notice2：使用了mybatis就要配数据源否则会启动报错...
notice3：pom依赖中可以配置依赖版本号、mapper、model等的存放位置...
2：添加一个mybatis-generator需要用的db.properties文件（也可以不添加）
jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/dsos_zgq?&useUnicode=true&characterEncoding=utf-8 jdbc.username=root jdbc.password=root #插件位置 mapper.plugin=tk.mybatis.mapper.generator.MapperPlugin #生成的mapper类继承的父类的位置 mapper.Mapper=com.dev.mapper.BaseMapper
如图：
3：添加generator-config.xml（要和pom文件中配置的路径一致）
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <properties resource="mybatis-generator/db.properties"/> <classPathEntry location="D:\IntelljIdea\Maven3.5\localmaven\mysql\mysql-connector-java\8.0.16\mysql-connector-java-8.0.16.jar"/> <!-- MyBatis3Simple 可以不生成生成model衍生的example文件 --> <context > <!-- TKmybatis配置 --> <property name="javaFileEncoding" value="UTF-8"/> <property name="beginningDelimiter" value="`"/> <property name="endingDelimiter" value="`"/> <plugin type="${mapper.plugin}"> <property name="mappers" value="${mapper.Mapper}"/> </plugin> <commentGenerator> <property name="suppressDate" value="true"/> <!-- 是否去除自动生成的注释 true：是 ： false:否 --> <property name="suppressAllComments" value="true"/> </commentGenerator> <jdbcConnection driverClass="${jdbc.driver}" connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"> <!-- mysql 驱动8.x版本需要设置时区 value设置为GMT、UTC都可以 --> <property name="serverTimezone" value="GMT"/> <!-- 解决生成其他数据库的表的model和mapper等 --> <!-- 也可解决生成的model里面缺少@Id注解问题（此问题mysql驱动版本回退到5.1也可以解决）--> <property name="nullCatalogMeansCurrent" value="true"/> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false"/> </javaTypeResolver> <javaModelGenerator targetPackage="${targetModelPackage}" targetProject="${targetJavaProject}"/> <sqlMapGenerator targetPackage="${targetXMLPackage}" targetProject="${targetResourcesProject}"/> <javaClientGenerator targetPackage="${targetMapperPackage}" targetProject="${targetJavaProject}" type="XMLMAPPER"/> <!--tableName 代表表名 domainObjectName代表实体名 schema指数据库结构-->
<!-- 要保证表aopi存在哦~，使用%则可生成当前数据下所有表对应的model、mapper等文件 --> <table tableName="aopi"> <generatedKey column="id" sqlStatement="Mysql" identity="true"/> </table> </context> </generatorConfiguration>
4：编写一个通用mapper的接口BaseMapper
package com.dev.mapper; import tk.mybatis.mapper.common.IdsMapper; import tk.mybatis.mapper.common.Mapper; import tk.mybatis.mapper.common.MySqlMapper; /** * Created by zgq7 on 2019/6/24. * 让生成的mapper文件都集成该接口 */ public interface BaseMapper<T> extends Mapper<T>, MySqlMapper<T>, IdsMapper<T> { }
notice1：类路径要与db.properties中定义的一样，不然会报错...
5：application.xml的配置
server.port=8022 server.servlet.context-path=/ #druid数据源 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource spring.datasource.druid.url=jdbc:mysql://localhost:3306/dsos_zgq?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf-8 spring.datasource.druid.driver-class-name=com.mysql.cj.jdbc.Driver spring.datasource.druid.username=root spring.datasource.druid.password=root #druid连接配置 spring.datasource.druid.db-type=mysql #druid测试 spring.datasource.druid.test-on-borrow=true #打印sql（两种都可以，但是我偏向后者了） #mybatis.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl logging.level.com.dev.mapper.repositry=debug
在此处我思索了一下druid的配置，我这里只是做简单配置而已，而且不止这一种配置方法，还有其他的配置方法，但是这种明显更方便更快捷。
后面我会更新druid的相关配置其他写法，多多研究一下。
6：运行mybatis-generator的插件，生成相关文件。
生成的文件结构如下：
7：进行单元测试看看是否能正常运行嘿嘿~~
notice1：可以看到sql日志也打出来了
notice2：单元测试也成功了，大功完成啦啦啦。。。。
总结：学习新的知识，了解新的用法，才能收获更多。
附mybatis官网地址关于xml配置的详情介绍：http://www.mybatis.org/generator/configreference/table.html