mybatis也能方向生成代码，能方向生成实体类（po)、mapper接口和Mapper接口映射文件，能减少我们代码的工作量。详细步骤如下
1、下载mybatis生成架包工具MyBatis_Generator_1.3.1.zip，解压架包把features、plugins文件夹下的架包分别拷贝到eclipse安装目录下的features、plugins文件夹。重启eclipse就行。
解压后图片如下：
Eclipse路径如图：
拷贝替换如图：
2、创建generatorConfig.xml文件，安装好mybatis 就能创建generatorConfig.xml
3、配置generatorConfig.xml配置文件，详细如下
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<?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 location="D:\\rep\\mysql\\mysql-connector-java\\5.1.19\\mysql-connector-java-5.1.19.jar" /> -->
<classPathEntry location="D:\\repo\\com\\oracle\\ojdbc14\\10.2.0.1.0\\ojdbc14-10.2.0.1.0.jar" />
<context id="DB2Tables" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressAllComments" value="true" />
<property name="suppressDate" value="true" />
</commentGenerator>
<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" connectionURL="jdbc:oracle:thin:@xxx.xxx.xxx.xxx:1521:orcl4" userId="xxx" password="xxxx" />
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
<!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer true，把JDBC DECIMAL 和 NUMERIC 类型解析为java.math.BigDecimal -->
</javaTypeResolver>
<javaModelGenerator targetPackage="com.pcmall.domain.sale.order" targetProject="pos-service/src/main/java">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<sqlMapGenerator targetPackage="mybatis.mapper.sale.order" targetProject="pos-service/src/main/resources">
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<javaClientGenerator targetPackage="com.pcmall.dao.sale.order" targetProject="pos-service/src/main/java" type="XMLMAPPER">
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<table tableName="hs_zxzflx" enableSelectByExample="false" enableDeleteByExample="false" enableCountByExample="false" selectByExampleQueryId="true" enableUpdateByExample="false">
<!-- <generatedKey column="ID" sqlStatement="oracle" identity="true" /> -->
</table>
</context>
</generatorConfiguration>
4、右击generatorConfig.xml 点击Generate MyBatis/iBATIS Artifacts 生成对应接口、接口映射文件、实体类
5、查看结果
MyBatis Generator.zip （9个子文件） 
MyBatis Generator 
org.mybatis.generator.source_1.3.1.201101032122.jar 9KB
