Mybatis 的逆向工程案例

为了能让大家更好的敲代码,而不是浪费大量时间去写mapper.java,mapper.xml、po等代码,mybatis官方提供逆向工程功能.

文件配置

<generatorConfiguration>
    <context id="testTables" targetRuntime="MyBatis3">
        <commentGenerator>
            
            <property name="suppressAllComments" value="true" />
        commentGenerator>
        
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/mybatis" userId="root"
            password="root">
        jdbcConnection>
        

        
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        javaTypeResolver>

        
        <javaModelGenerator targetPackage="com.mybatis.po"
            targetProject=".\src">
            
            <property name="enableSubPackages" value="false" />
            
            <property name="trimStrings" value="true" />
        javaModelGenerator>
        
        <sqlMapGenerator targetPackage="com.mybatis.mapper" 
            targetProject=".\src">
            
            <property name="enableSubPackages" value="false" />
        sqlMapGenerator>
        
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="com.mybatis.mapper" 
            targetProject=".\src">
            
            <property name="enableSubPackages" value="false" />
        javaClientGenerator>
        
        <table schema="" tableName="user">table>
        <table schema="" tableName="orders">table>


        
    context>
generatorConfiguration>

执行生成的代码

List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        //指定 逆向工程配置文件
        File configFile = new File("generatorConfig.xml"); 
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
                callback, warnings);
        myBatisGenerator.generate(null);

效果图

执行前

执行后

接下来,只需要将生成的代码拷贝到相应的项目中就行了.