Mabatis自動生成entity和mapper接口

http://openwares.net/java/mabatis_autogenerator.html

Mybatis Generator可以自動生成模型實體對象POJO,mapper接口和對應的xml配置文件。

Mybatis Generator提到的模型model其實就是實體entity。

Mybatis Generator的核心就一個jar包mybatis-generator-core-1.3.2.jar，可以從命令行運行，也有相應的eclipse插件。

配置文件

Mybatis Generator需要一個配置文件來生成代碼，下面是配置文件的一個樣例：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

<?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="/path/to/WebRoot/WEB-INF/lib/postgresql-9.2-1003.jdbc4.jar" />     <context id="BuildingTables" targetRuntime="MyBatis3">           <commentGenerator>             <property name="suppressAllComments" value="true" />             <property name="suppressDate" value="true" />         </commentGenerator>           <jdbcConnection driverClass="org.postgresql.Driver"             connectionURL="jdbc:postgresql://localhost/dbname"             userId="xxx"             password="xxx">         </jdbcConnection>           <javaTypeResolver >             <property name="forceBigDecimals" value="true" />         </javaTypeResolver>           <javaModelGenerator targetPackage="org.xxx.xxx.entity" targetProject="project_name/src/main">             <property name="enableSubPackages" value="false" />             <property name="trimStrings" value="true" />         </javaModelGenerator>           <sqlMapGenerator targetPackage="org.xxx.xxx.dao"  targetProject="project_name/src/main">             <property name="enableSubPackages" value="false" />         </sqlMapGenerator>           <javaClientGenerator type="XMLMAPPER" targetPackage="org.xxx.xxx.dao"  targetProject="project_name/src/main">             <property name="enableSubPackages" value="false" />         </javaClientGenerator>           <table schema="base" tableName="tb_building" domainObjectName="Building" >             <property name="useActualColumnNames" value="true"/>         </table>         <table schema="base" tableName="tb_floor" domainObjectName="Floor" >             <property name="useActualColumnNames" value="true"/>         </table>         <table schema="base" tableName="tb_house" domainObjectName="House" >             <property name="useActualColumnNames" value="true"/>         </table>       </context> </generatorConfiguration>

配置文件的詳細語法見官方文檔。

運行Mybatis Generator

命令行

$ java -jar mybatis-generator-core-x.x.x.jar -configfile generatorConfig.xml

eclipse插件

在eclipse中配置新的安裝源http://mybatis.googlecode.com/svn/sub-projects/generator/trunk/eclipse/UpdateSite/
然後安裝即可。

可以通過file->new->Mybatis->Mybatis Generator Configuration File 新建配置文件
在配置文件上右擊選擇Generate Mybatis/iBatis Artifacts產生mapper接口和實體POJO