mybatis多条件语句查询

mybatis多条件语句查询

<?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" >

<!-- namespace命名空间,作用就是对sql进行分类化的管理,理解为sql隔离

    注意:使用mapper代理开发时，namespace有特殊作用,namespace等于mapper接口地址

 -->

 <mapper namespace="com.yanshu.service.SpTopKeywordService" >
<!--只能针对一个表进行操作  一对一查询 -->
<select id="sptopshowID"  parameterType="Map" resultType="com.yanshu.pojo.SpTopKeyword">
select * from Spider_Top_Keyword 
</select>
<select id="sptopshow"  parameterType="Map" resultType="com.yanshu.pojo.SpTopKeyword">
select * from Spider_Top_Keyword 
 
<where>
<if test="status!=null and status!='' ">
  status=#{status}
 </if>
 <if test="leveA!=null and leveA!='' ">
 and leveA=#{leveA}
 </if>
 <if test="leveB!=null and leveB!='' ">
 and leveB=#{leveB}
 </if>
 <if test="leveC!=null and leveC!='' ">
 and leveC=#{leveC}
 </if>
</where>
limit  0,  200 
</select>

</mapper>

service和dao层省略....

controller层

package com.yanshu.controller;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.LinkedList;

import java.util.List;

import java.util.Map;

import java.util.Queue;

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

import org.springframework.web.bind.annotation.CrossOrigin;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import com.alibaba.fastjson.JSON;

import com.yanshu.dao.SpTopKeywordDao;

import com.yanshu.dao.SpTopKeywordDaoJpa;

import com.yanshu.pojo.Business;

import com.yanshu.pojo.SpTopKeyword;

import com.yanshu.pojo.SpTopKeywordJpa;

import com.yanshu.service.SpTopKeywordService;

import com.yanshu.utils.JsonUtil;

@RestController

@CrossOrigin

public class SpTopKeywordController {
Queue<SpTopKeyword> queue = new LinkedList<>();
Queue<SpTopKeyword> queue1 = new LinkedList<>();
//任务:queue 0 和1
//查询:关键词
//update 
@Autowired
private SpTopKeywordDao sptopdao;
@Autowired
private SpTopKeywordDaoJpa sptopjpa;
@Autowired
private SpTopKeywordService sptopservice;
@RequestMapping("/sptopkey")
public String getSpTopKeyword(String status,String leveC,String leveA,String leveB)
{
Map map=new HashMap();
map.put("leveA", leveA);
map.put("leveB", leveB);
map.put("leveC", leveC);
map.put("status", status);
if(status.equals("1"))
{
//得到的数据
//List<SpTopKeyword> listuser=sptopdao.getSpTopKeyword(status);
List<SpTopKeyword> listuser=sptopservice.sptopshow(map);
//把所有的数据放到Queue中
for (SpTopKeyword object : listuser) {
queue.offer(object);
}
//每次请求获取10个状态为0 的关键词。队列中保存200关键词。
List<SpTopKeyword> returnUsers=new ArrayList<>();
for(int i=1;i<=10;i++)
{
returnUsers.add(queue.poll());

}
return returnUsers!=null?JSON.toJSONString(returnUsers):JsonUtil.objectStatus(4);
}
else
{
//得到的数据
//List<SpTopKeyword> listuser=sptopdao.getSpTopKeyword(status);
List<SpTopKeyword> listuser=sptopservice.sptopshow(map);
//把所有的数据放到Queue中
for (SpTopKeyword object : listuser) {
queue1.offer(object);
}
//每次请求获取10个状态为0 的关键词。队列中保存200关键词。
List<SpTopKeyword> returnUsers=new ArrayList<>();
for(int i=1;i<=10;i++)
{
returnUsers.add(queue1.poll());

}
return returnUsers!=null?JSON.toJSONString(returnUsers):JsonUtil.objectStatus(4);
}

}

@RequestMapping("/upsptopkey")
public String updateSpTopKeyword(String status,String leveA,String leveB,String leveC)
{

Map map=new HashMap();
map.put("leveA", leveA);
map.put("leveB", leveB);
map.put("leveC", leveC);
map.put("status", status);
List<SpTopKeyword> listuser=sptopservice.sptopshow(map);
System.out.println(listuser);
return listuser!=null?JSON.toJSONString(listuser):JsonUtil.objectStatus(4);

}

}