mybatis-plus使用 mybatis自动生成成实体类、Mapper、Mapper.xml

@Mapper
public interface UserMapper extends BaseMapper<User> {

public interface UserService extends IService<User> {

public class UserServiceImp extends ServiceImpl<UserMapper, User> implements UserService{


1.添加插件
2.resources下建立generatorConfig.xml
3.maven运行插件
<plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <configuration>
                    <verbose>true</verbose>
                    <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>
                </dependencies>
            </plugin>

resources下建立generatorConfig.xml
<?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:选择你的本地硬盘上面的数据库驱动包-->
    <classPathEntry  location="D:\soft\maven\repository\mysql\mysql-connector-java\8.0.27\mysql-connector-java-8.0.27.jar"/>
    <context id="DB2Tables"  targetRuntime="MyBatis3">
        <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>
        <!--数据库链接URL，用户名、密码
           1.一般jdbc数据库的版本6.x以上，都是com.mysql.cj.jdbc.Driver  其他的低版本就是com.mysql.cj.jdbc.Driver
         -->
        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false"
                        userId="root" password="123456">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!-- 生成实体类的包名和位置-->
        <javaModelGenerator targetPackage="com.zh.meters.entity" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!-- 生成mapper映射文件的包名和位置-->
        <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!-- 生成mapper的包名和位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.zh.meters.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!-- 要生成的表  tableName:数据库中的表名或视图名  domainObjectName:实体类名-->
        <!--<table tableName="blog" domainObjectName="Blog"></table>-->
        <table tableName="user" domainObjectName="User"></table>
        <table tableName="test" domainObjectName="Test"></table>
    </context>
</generatorConfiguration>