总结：mybatis-generator两种使用方式pom-plugin、main方法 - 简书

安宇雨 - 随手采集
2019-03-27 15:19:06
随手采集
0000-未整理-等待研究

1. 使用Maven plugin生成

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>cn.xiaows</groupId>
    <artifactId>app</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>app</name>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <!-- ... -->
        <!-- mapper 不推荐使用 -->
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
            <version>1.2.4</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.4</version>
                <configuration>
                    <configurationFile>${basedir}/src/main/resources/mybatis-generator.xml</configurationFile>
                    <overwrite>true</overwrite>
                    <verbose>true</verbose>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.46</version>
                    </dependency>
                    <!-- mapper 不推荐使用 -->
                    <dependency>
                        <groupId>tk.mybatis</groupId>
                        <artifactId>mapper-generator</artifactId>
                        <version>1.0.0</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

</project>

src/main/resources/mybatis-generator.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>
    <context id="MysqlContext" targetRuntime="MyBatis3Simple" defaultModelType="flat">
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>

        <!--<plugin type="tk.mybatis.mapper.generator.MapperPlugin">
            <property name="mappers" value="cn.xiaows.app.util.MyMapper"/>
        </plugin>-->

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/mydb"
                        userId="root"
                        password="123456"/>

        <!-- 对于生成的entity所在包 -->
        <javaModelGenerator targetPackage="cn.xiaows.app.entity0" targetProject="src/main/java"/>
        <!-- 对于生成的mapper所在目录 -->
        <sqlMapGenerator targetPackage="mapper0" targetProject="src/main/resources"/>
        <!-- 配置mapper对应的java映射 -->
        <javaClientGenerator targetPackage="cn.xiaows.app.dao0" targetProject="src/main/java" type="XMLMAPPER" />

        <table tableName="%"/><!-- 所有表 -->
        <!--<table tableName="company" mapperName="CompanyDao"/>-->
        <!--<table tableName="user" mapperName="UserDao"/>-->
        <!--...-->
    </context>
</generatorConfiguration>

生成命令：
mybatis-generator:generate -f pom.xml

2. 使用main方法生成

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>cn.xiaows</groupId>
    <artifactId>app</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>app</name>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <!-- mysql -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>

        <!-- mybatis-generator -->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.4</version>
            <scope>compile</scope>
            <optional>true</optional>
        </dependency>
        
        <!-- mapper 不推荐使用 -->
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
            <version>1.2.4</version>
        </dependency>
    </dependencies>

</project>

MybatisGeneratorMain.java

package cn.xiaows.app.util;

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 java.io.File;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

public class MybatisGeneratorMain {

    public static void main(String[] args) throws Exception {
        List<String> warnings = new ArrayList<>();
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(new File("app-logs-web/src/main/resources/mybatis-generator.xml"));
        // Configuration config = cp.parseConfiguration(ClassLoader.getSystemResourceAsStream("mybatis-generator.xml"));
        DefaultShellCallback callback = new DefaultShellCallback(true);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        myBatisGenerator.generate(null);
        for (String warning : warnings) {
            System.out.println(warning);
        }
    }
}

mybatis-generator.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>
    <context id="MysqlContext" targetRuntime="MyBatis3Simple" defaultModelType="flat">
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>

        <!--<plugin type="tk.mybatis.mapper.generator.MapperPlugin">
            <property name="mappers" value="cn.xiaows.app.util.MyMapper"/>
        </plugin>-->

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/mydb"
                        userId="root"
                        password="123456">
        </jdbcConnection>

        <!-- 对于生成的entity所在包 -->
        <javaModelGenerator targetPackage="cn.xiaows.app.entity" targetProject="app-logs-web/src/main/java"/>
        <!-- 对于生成的mapper所在目录 -->
        <sqlMapGenerator targetPackage="mapper" targetProject="app-logs-web/src/main/resources"/>
        <!-- 配置mapper对应的java映射 -->
        <javaClientGenerator targetPackage="cn.xiaows.app.dao" targetProject="app-logs-web/src/main/java" type="XMLMAPPER" />

        <table tableName="%"/><!-- 所有表 -->
        <!--<table tableName="user" mapperName="UserDao"/>-->
        <!--<table tableName="project" mapperName="ProjectDao"/>-->
        <!--...-->
    </context>
</generatorConfiguration>

- *
MyMapper.java

package cn.xiaows.app.util;

import tk.mybatis.mapper.common.Mapper;
import tk.mybatis.mapper.common.MySqlMapper;

/**
 * 继承自己的MyMapper
 * 特别注意，该接口不能被扫描到，否则会出错
 */
@Deprecated
public interface MyMapper<T> extends Mapper<T>, MySqlMapper<T> {

}

UserMapper.java

package cn.xiaows.app.dao;

import cn.xiaows.app.entity.User;
import java.util.List;

public interface UserMapper {
    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbg.generated Sat Jan 05 19:19:00 CST 2019
     */
    int deleteByPrimaryKey(Integer id);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbg.generated Sat Jan 05 19:19:00 CST 2019
     */
    int insert(User record);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbg.generated Sat Jan 05 19:19:00 CST 2019
     */
    User selectByPrimaryKey(Integer id);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbg.generated Sat Jan 05 19:19:00 CST 2019
     */
    List<User> selectAll();

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbg.generated Sat Jan 05 19:19:00 CST 2019
     */
    int updateByPrimaryKey(User record);
}

UserMapper.xml

<?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="cn.xiaows.app.dao.UserMapper">
  <resultMap id="BaseResultMap" type="cn.xiaows.app.entity.User">
    <!--
      WARNING - @mbg.generated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Sat Jan 05 19:19:00 CST 2019.
    -->
    <id column="id" jdbcType="INTEGER" property="id" />
    <result column="name" jdbcType="VARCHAR" property="name" />
    <result column="age" jdbcType="INTEGER" property="age" />
  </resultMap>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    <!--
      WARNING - @mbg.generated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Sat Jan 05 19:19:00 CST 2019.
    -->
    delete from user
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="cn.xiaows.app.entity.User">
    <!--
      WARNING - @mbg.generated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Sat Jan 05 19:19:00 CST 2019.
    -->
    insert into user (id, name, age
      )
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER}
      )
  </insert>
  <update id="updateByPrimaryKey" parameterType="cn.xiaows.app.entity.User">
    <!--
      WARNING - @mbg.generated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Sat Jan 05 19:19:00 CST 2019.
    -->
    update user
    set name = #{name,jdbcType=VARCHAR},
      age = #{age,jdbcType=INTEGER}
    where id = #{id,jdbcType=INTEGER}
  </update>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    <!--
      WARNING - @mbg.generated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Sat Jan 05 19:19:00 CST 2019.
    -->
    select id, name, age
    from user
    where id = #{id,jdbcType=INTEGER}
  </select>
  <select id="selectAll" resultMap="BaseResultMap">
    <!--
      WARNING - @mbg.generated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Sat Jan 05 19:19:00 CST 2019.
    -->
    select id, name, age
    from user
  </select>
</mapper>

springboot启动类：AppLogApplication.java

package cn.xiaows.app;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
// import tk.mybatis.spring.annotation.MapperScan;// 不推荐使用 容易搞混!!!

/**
    如果dao.UserMapper extends MyMapper<User>
    dao.UserMapper就不需要添加@org.apache.ibatis.annotations.Mapper注解
    就必须添加@tk.mybatis.spring.annotation.MapperScan("cn.xiaows.app.dao")该注解

    如果dao.UserMapper没有添加Mapper注解
    则这里需要添加MapperScan("cn.xiaows.app.dao")
 */
@SpringBootApplication
@MapperScan("cn.xiaows.app.dao")
public class AppLogApplication {

    public static void main(String[] args) {
        SpringApplication.run(AppLogsWebApplication.class, args);
    }

}

Original url: Access
Created at: 2019-03-27 15:19:05
Category: default
Tags: none

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