Mybaits多个参数的传递

今天介绍是多个参数传递到映射xml,进行CURD操作

一.使用参数映射的方法进行传递

1在接口写对应的方法

public interface EmployeeMapper {

public Employee getEmpByIdAndLastName(@Param("id")Integer id,@Param("lastName")String lastName);

}

2在xml里配置对应的映射

<!-- public Employee getEmpByIdAndLastName(Integer id,String lastName);-->
<select id="getEmpByIdAndLastName" resultType="com.atguigu.mybatis.bean.Employee">
select * from tbl_employee where id = #{id} and last_name=#{lastName}
</select>

3在juit进行测试

@Test
public void test04() throws IOException{

SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();
//1、获取到的SqlSession不会自动提交数据
SqlSession openSession = sqlSessionFactory.openSession();

try{
EmployeeMapper mapper = openSession.getMapper(EmployeeMapper.class);
Employee employee = mapper.getEmpByIdAndLastName(1, "tom");
System.out.println(employee);
}finally{
openSession.close();
}
}

二 使用map进行多个参数的传递

1在接口写对应的方法

public Employee getEmpByMap(Map<String, Object> map);

2在xml里配置对应的映射

<!-- public Employee getEmpByMap(Map<String, Object> map); -->
<select id="getEmpByMap" resultType="com.atguigu.mybatis.bean.Employee">
select * from ${tableName} where id=${id} and last_name=#{lastName}
</select>

3在juit进行测试

@Test
public void test04() throws IOException{

SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();
//1、获取到的SqlSession不会自动提交数据
SqlSession openSession = sqlSessionFactory.openSession();

try{
EmployeeMapper mapper = openSession.getMapper(EmployeeMapper.class);
Map<String, Object> map = new HashMap<>();
map.put("id", 2);
map.put("lastName", "Tom");
map.put("tableName", "tbl_employee");
Employee employee = mapper.getEmpByMap(map);
System.out.println(employee)；
}finally{
openSession.close();
}
}