Mybatis Generator可以自动生成模型实体对象POJO,mapper接口和对应的xml配置文件。
Mybatis Generator提到的模型model其实就是实体entity。
Mybatis Generator的核心就一个jar包mybatis-generator-core-1.3.2.jar，可以从命令行运行，也有相应的eclipse插件。
配置文件
Mybatis Generator需要一个配置文件来生成代码，下面是配置文件的一个样例：
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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="/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>
|
配置文件的详细语法见官方文档。
运行Mybatis Generator
命令行
$ java -jar mybatis-generator-core-x.x.x.jar -configfile generatorConfig.xml
eclipse插件
在eclipse中配置新的安装源http://mybatis.googlecode.com/svn/sub-projects/generator/trunk/eclipse/UpdateSite/
然后安装即可。
可以通过file->new->Mybatis->Mybatis Generator Configuration File 新建配置文件
在配置文件上右击选择Generate Mybatis/iBatis Artifacts产生mapper接口和实体POJO