MyBatis使用Generator自动生成代码

MyBatis中，可以使用Generator自动生成代码，包括DAO层、 MODEL层 、MAPPING SQL映射文件。 

第一步：下载MyBatis的Generator工具 
下载地址：http://code.google.com/p/mybatis/downloads/detail?name=mybatis-generator-core-1.3.1-bundle.zip&can=3&q=Product%3DGenerator 

第二步：配置自动生成代码所需的XML配置文件，例如（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>
    <!-- classPathEntry:数据库的JDBC驱动,换成你自己的驱动位置 -->
    <classPathEntry location="D:\libs\ojdbc14.jar" />

    <context id="DB2Tables" targetRuntime="MyBatis3">

        <!-- 去除自动生成的注释 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

        <jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" connectionURL="jdbc:oracle:thin:@172.16.88.10:1521:mydb" userId="abc" password="abc">
        </jdbcConnection>

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

        <!-- targetProject:自动生成代码的位置 -->
        <javaModelGenerator targetPackage="com.test.model" targetProject="E:\eclipse 3.5.2\workspace\gao\src">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <sqlMapGenerator targetPackage="com.test.mapping"  targetProject="E:\eclipse 3.5.2\workspace\gao\src">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.test.dao"  targetProject="E:\eclipse 3.5.2\workspace\gao\src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!-- tableName:用于自动生成代码的数据库表；domainObjectName:对应于数据库表的javaBean类名 -->
        <table tableName="pds_system_item" domainObjectName="PdsSystemItem" />
        <table tableName="pds_system_level" domainObjectName="PdsSystemLevel" />
    </context>

</generatorConfiguration>

将这个文件保存至你下载的mybatis-generator-core-1.3.1文件夹下 

第三步：用命令行运行（记得选择自己的文件地址） 

java -jar E:\soft\mybatis-generator-core-1.3.1\lib\mybatis-generator-core-1.3.1.jar -configfile E:\soft\mybatis-generator-core-1.3.1\genrator.xml -overwrite