idea使用mybatis-generator插件自动生成eitity,dao,mapper

一、maven项目的使用方式

1、生成文件的最终结果如下

2、pom generator插件的配置

3、generatorConfig的配置

xml version="1.0" encoding="UTF-8" ?>
 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:\Java\repository\mysql\mysql-connector-java\5.1.36\mysql-connector-java-5.1.36.jar" />
   <context id="context1" targetRuntime="MyBatis3">
      <plugin type="org.mybatis.generator.plugins.RenameExampleClassPlugin">
         <property name="searchString" value="Example" />
         <property name="replaceString" value="Criteria" />
      plugin>
      <plugin type="org.mybatis.generator.plugins.SerializablePlugin" />
     
      <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://xxx:3306/xx?useUnicode=true&characterEncoding=UTF-8" userId="xxx" password="xxx" />
      

      
      <javaModelGenerator targetPackage="com.xxx.model" targetProject="src/main/java">
         <property name="enableSubPackages" value="true" />
         <property name="trimStrings" value="true" />
      javaModelGenerator>
      
      <sqlMapGenerator targetPackage="mapper.xxx" targetProject="src/main/resources">
         <property name="enableSubPackages" value="true" />
      sqlMapGenerator>
      
      <javaClientGenerator targetPackage="com.xxx.dao" targetProject="src/main/java" type="XMLMAPPER">
         <property name="enableSubPackages" value="true" />
      javaClientGenerator>

      <table tableName="t_test" domainObjectName="TestValue">
         <generatedKey column="id" sqlStatement="MySql" identity="true" />
      table>

   context>
generatorConfiguration>

4、运行插件生成配置文件

相关连接：

http://blog.csdn.net/mynamepg/article/details/79414871

http://blog.csdn.net/mynamepg/article/details/79414948

面向对象查询Criteria：

示例1， 查询列表：

ConnPersonDepartCriteria query = new ConnPersonDepartCriteria();
ConnPersonDepartCriteria.Criteria critria = query.createCriteria();
critria.andCompanyIdEqualTo(company);
if(department != null) critria.andDepartIdEqualTo(department);
query.setOrderByClause("person_id desc");
List list = connPersonDepartMapper.selectByExample(query);

示例2，统计：

ConnPersonDepartCriteria query = new ConnPersonDepartCriteria();

query.createCriteria().andCompanyIdEqualTo(company).andDepartIdEqualTo(department);
return connPersonDepartMapper.countByExample(query);

示例3， 删除：

ConnPersonDepartCriteria query=new ConnPersonDepartCriteria();
query.createCriteria().andCompanyIdEqualTo(companyId);
connPersonDepartMapper.deleteByExample(query);