使用Mybatis-Generator自动生成Dao、Model、Mapping代码

1.所需jar包

mybatis-generator-core-1.3.2.jar mybatis-generator-core-1.3.2.jar 可以去http://mvnrepository.com/自行搜索与下载对应版本的jar包。

2.配置generator.xml文件

<?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>
    <!-- 数据库驱动包位置 -->
    <classPathEntry location="E:\lichenli\mybatis\generator\mysql-connector-java-5.1.34.jar" />
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!-- 数据库链接URL、用户名、密码 -->
         <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/en_oa" userId="test" password="test">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>
        <!-- 生成模型的包名和位置 -->
        <javaModelGenerator targetPackage="com.demo.oa.model" targetProject="E:\lichenli\mybatis\generator\oa\src">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- 生成的映射文件包名和位置 -->
        <sqlMapGenerator targetPackage="com.demo.oa.dao.mapping" targetProject="E:\lichenli\mybatis\generator\oa\src">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>
        <!-- 生成DAO的包名和位置 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.demo.oa.dao" targetProject="E:\lichenli\mybatis\generator\oa\src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>
        <!-- 要生成那些表(更改tableName和domainObjectName就可以) -->
        <table tableName="en_user" domainObjectName="EnUser" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
        <table tableName="en_dep" domainObjectName="EnDepartment" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
        <table tableName="en_grade" domainObjectName="EnGrade" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
    </context>
</generatorConfiguration>

3.允许命令生成代码

将jar包与配置文件放到同一目录下，在文件夹内按住shift右击在此处打开命令窗口，输入命令

java -jar mybatis-generator-core-1.3..jar -configfile generator.xml -overwrite

回车OK。