MyBatis如何進(jìn)行雙重foreach循環(huán)
更新時間:2022年02月08日 11:14:29 作者:harden_no1
這篇文章主要介紹了MyBatis如何進(jìn)行雙重foreach循環(huán),具有很好的參考價值,希望對大家有所幫助。如有錯誤或未考慮完全的地方,望不吝賜教
進(jìn)行雙重foreach循環(huán)
mapname是一個Map<String,Map<String,Object>> 對象
<foreach collection="mapname" index="key1" item="value1" separator=",">
?? ?<foreach collection="value1" index="key2" item="value2" separator=",">
?? ??? ?#{key1},
?? ??? ?#{key2},
?? ??? ?#{value2}
?? ?</foreach>
</foreach>使用場景
比如說一個付款人下面對應(yīng)的運(yùn)單的金額,那么key1就是付款人編號,key2是運(yùn)單編號,value2是分?jǐn)偟慕痤~
mybatis foreach循環(huán),傳入多個參數(shù)
上代碼
controller:
@RequestMapping(value = "/findPage", method = RequestMethod.POST)
@ResponseBody
public Object findPage(@RequestParam(required=false) String jobCategory,@RequestParam(required=false) String ids,@RequestParam(required=false) String cities) {
try {
List<Integer> listJob = new ArrayList<Integer>();
List<Integer> listIds = new ArrayList<Integer>();
List<String> listCities = new ArrayList<String>();
//按照城市名稱和工種查詢
if(StringUtils.isNotBlank(jobCategory) && StringUtils.isNotBlank(cities)){
String[] temp = jobCategory.split(",");
String[] cityTemp = cities.split(",");
for(int i=0;i<temp.length;i++){
listJob.add(Integer.valueOf(temp[i]));
}
for(int i=0;i<cityTemp.length;i++){
listCities.add(cityTemp[i]);
}
List<WebsitesJob> list = jobService.findPage(listJob, listIds, listCities);
return new ExtGridReturn(list.size(), list);
}
//按照工種查詢
if(StringUtils.isNotBlank(jobCategory)){
String[] temp = jobCategory.split(",");
for(int i=0;i<temp.length;i++){
listJob.add(Integer.valueOf(temp[i]));
}
}
//按照職位名稱查詢
if(StringUtils.isNotBlank(ids)){
String[] temp = ids.split(",");
for(int i=0;i<temp.length;i++){
listIds.add(Integer.valueOf(temp[i]));
}
}
//按照城市查詢
if(StringUtils.isNotBlank(cities)){
String[] temp = cities.split(",");
for(int i=0;i<temp.length;i++){
listCities.add(temp[i]);
}
}
List<WebsitesJob> list = jobService.findPage(listJob, listIds, listCities);
return new ExtGridReturn(list.size(), list);
} catch (Exception e) {
LOGGER.error("分頁獲取信息出錯", e);
return new ExceptionReturn(e);
}
}mapper
/**
? ? ?* 描述:根據(jù)工種查詢列表
? ? ?* @param jobCategorys
? ? ?* @return
? ? ?*/
? ? List<WebsitesJob> findPage(@Param("jobCategorys") List<Integer> jobCategorys,@Param("ids") List<Integer> ids,@Param("workPlace") List<String> workPlace);xml
<!-- 前臺查詢列表 -->
<select id="findPage" resultType="cn.edu.hbcf.plugin.websites.pojo.WebsitesJob">
select n.ID id,
n.NAME name,
n.WORKPLACE workPlace,
n.JOBCATEGORY jobCategory,
n.SALARY salary,
n.RESPONSIBILITIES responsibilities,
n.REQUIREMENTS requirements,
n.ISHOT isHot,
n.UPDATEDATE updateDate,
n.UPDATEUSER updateUser,
u.real_name updateName
from websites_job n
left join base_users u on n.updateUser = u.account
<where>
<if test="jobCategorys.size()!=0">
or n.jobCategory in
<foreach collection="jobCategorys" index="index" item="item" open="(" separator="," close=")">
#{item}
</foreach>
</if>
<if test="ids.size()!=0">
or n.id in
<foreach collection="ids" item="item" index="index" open="(" separator="," close=")">
#{item}
</foreach>
</if>
<if test="workPlace.size()!=0">
or n.WORKPLACE in
<foreach collection="workPlace" item="item" index="index" open="(" separator="," close=")">
#{item}
</foreach>
</if>
</where>
order by n.ISHOT,n.ID desc
</select>以上為個人經(jīng)驗,希望能給大家一個參考,也希望大家多多支持腳本之家。
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