SSM开发笔记2-2验证SSM配置-DAO

验证Dao

       1、测试流程：
              ①定义一个实体类和数据库数据相对应
              ②编写dao对应的接口，不用编写其实现类，因为我们用的是mapper.xml的方式实现的
              ③在xml中编写dao接口对应的sql实现方式
              ④编写Junit测试基础类，其他测试类继承该类，在其他测试类中就可以不用每次填写相同的配置
                     @RunWith(SpringJUnit4ClassRunner.class)设定运行的类
                     @ContextConfiguration({“classpath:spring/spring-dao.xml”})告诉Junit配置文件在哪
              ⑤运行Junit，看是否显示结果正确
       2、相关类如下：

package com.imooc.o2o.entity;

import java.util.Date;

public class Area {
	private Long areaId;
	private String areaName;
	private Integer priority;
	private Date createTime;
	private Date lastEditTime;
	public Long getAreaId() {
		return areaId;
	}
	public void setAreaId(Long areaId) {
		this.areaId = areaId;
	}
	public String getAreaName() {
		return areaName;
	}
	public void setAreaName(String areaName) {
		this.areaName = areaName;
	}
	public Integer getPriority() {
		return priority;
	}
	public void setPriority(Integer priority) {
		this.priority = priority;
	}
	public Date getCreateTime() {
		return createTime;
	}
	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}
	public Date getLastEditTime() {
		return lastEditTime;
	}
	public void setLastEditTime(Date lastEditTime) {
		this.lastEditTime = lastEditTime;
	}
}

package com.imooc.o2o.dao;

import java.util.List;
import com.imooc.o2o.entity.Area;

public interface AreaDao {
	/**
	 * 列出地域列表
	 * 
	 * @param areaCondition
	 * @return
	 */
	List<Area> queryArea();
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.imooc.o2o.dao.AreaDao">

	<select id="queryArea" resultType="com.imooc.o2o.entity.Area">
		select area_id,area_name,priority,create_time,last_edit_time
		from tb_area 
		order by priority desc
	</select>

</mapper>

package com.imooc.o2o;

import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:spring/spring-dao.xml"})
public class BaseTest {
}

package com.imooc.o2o.dao;

import static org.junit.Assert.assertEquals;

import java.util.List;

import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;

import com.imooc.o2o.BaseTest;
import com.imooc.o2o.entity.Area;

public class AreaDaoTest extends BaseTest{
	
	@Autowired
	private AreaDao areaDao;
	
	@Test
	public void testQueryArea() {
		List<Area> areaList = areaDao.queryArea();
		assertEquals(2, areaList.size());
	}
}