文章目錄

• • • 1、EmployeeMapper接口
    • 2、EmployeeMapper.xml
    • 3、Test
    • 4、測試結果

1、EmployeeMapper接口

package com.mi.dao;import com.mi.pojo.Employee; import org.apache.ibatis.annotations.Param;import java.util.List; import java.util.Map;public interface EmployeeMapper {//返回Listpublic List<Employee> getEmployeeListByName(Map map); }

2、EmployeeMapper.xml

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <!--指定為接口的全類名--> <mapper namespace="com.mi.dao.EmployeeMapper"><!--返回List，resultType 返回集合中元素的類型--><select id="getEmployeeListByName" resultType="com.mi.pojo.Employee">select * from employee where last_name like #{lastName}</select></mapper>

3、Test

@Testpublic void testGetListByName() throws IOException {//1、獲取SqlSessionFactory對象SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();//2、獲取Sqlsesion對象SqlSession sqlSession = sqlSessionFactory.openSession();try {//3、獲取接口的實現類對象//會為接口自動創建一個代理對象，代理對象去執行增刪改查方法EmployeeMapper mapper = sqlSession.getMapper(EmployeeMapper.class);Map<String,Object> map = new HashMap<String, Object>();map.put("lastName","%e%");List<Employee> list = mapper.getEmployeeListByName(map);for (Employee employee : list){System.out.println(employee);}}finally {sqlSession.close();}}

4、測試結果

Employee{id=3, lastName='jerry', gender='0'} Employee{id=4, lastName='kite', gender='1'}Process finished with exit code 0

總結

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