【java】实体类中 按照特定的字段 进行升序/降序 排序

背景：

  实际页面上  所有的分值都是按照JSON格式存储在一个字符串中 存储在同一个字段中：

{"ownPTotal":"10>0","ownOTotal":"8>0","ownTotal1":"18","ownTotal2":"80","ownTotal3":"20","ownTotal4":"118","leadTotal1":"20","leadTotal2":"80","leadTotal3":"20","leadTotal4":"120","chiefCheck1":"","chiefCheck2":"","leadTotal5":"140"}

现在 需要按照 其中的 几种分值  进行升序/降序的排序操作

解决方法：

【因为不是按照原实体的中的字段进行排序，因此需要新建一个实体，将原实体中有用的字段和需要使用的值从字段中抽离出来 在新实体中设置成字段，如果需要进行排序的字段是原实体中就存在的，那就不需要新建实体了】

重点关注：

实现 Comparable接口需要实现的比较方法    这里动态比较 是按照 1.哪个字段进行排序   2.升序/降序

//排序方法
    @Override
    public int compareTo(NewMonthPerEntity o) {
        double a1 = this.whichProperty.equals("leadTotal5") ? this.leadTotal5 : (this.whichProperty.equals("leadTotal4") ? this.leadTotal4 :(this.whichProperty.equals("ownTotal4") ? this.ownTotal4 :this.ownTotal4));
        double a2 = o.whichProperty.equals("leadTotal5") ? o.leadTotal5 : (o.whichProperty.equals("leadTotal4") ? o.leadTotal4 :(o.whichProperty.equals("ownTotal4") ? o.ownTotal4 :o.ownTotal4));
        if(this.ascDesc){//若是升序
            return a1 > a2 ? 1  : -1;
        }else{
            return a1 > a2 ? -1 : 1;
        }
    }

 【注意:这里  return a1 > a2 ? 1 : -1;并没有写成  return a1 > a2 ? 1  :(a1==a2 ? 0 :-1);   这个样子，是因为如果在比较的时候判定两个相等 ，那在放入TreeSet中时会发生覆盖现象  】

 新实体完整代码：

package com.agen.util;

public class NewMonthPerEntity implements Comparable<NewMonthPerEntity>{
    
    private String monthPerId;            //月度考核Id
    private String userId;                //用户Id
    private String userName;            //用户名称
    private String createDate;        //考核创建时间
    private double leadTotal5;            //调控分值
    private double leadTotal4;            //考评分值
    private double ownTotal4;            //自评分值
    private boolean ascDesc;            //true升序/false降序
    private String whichProperty;        //需要对哪个分值排序
    
    
    
    
    
    public String getMonthPerId() {
        return monthPerId;
    }

    public void setMonthPerId(String monthPerId) {
        this.monthPerId = monthPerId;
    }
    public String getUserId() {
        return userId;
    }
    public void setUserId(String userId) {
        this.userId = userId;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getCreateDate() {
        return createDate;
    }

    public void setCreateDate(String createDate) {
        this.createDate = createDate;
    }

    public double getLeadTotal5() {
        return leadTotal5;
    }
    public void setLeadTotal5(double leadTotal5) {
        this.leadTotal5 = leadTotal5;
    }
    public double getLeadTotal4() {
        return leadTotal4;
    }
    public void setLeadTotal4(double leadTotal4) {
        this.leadTotal4 = leadTotal4;
    }

    public double getOwnTotal4() {
        return ownTotal4;
    }

    public void setOwnTotal4(double ownTotal4) {
        this.ownTotal4 = ownTotal4;
    }
    public boolean isAscDesc() {
        return ascDesc;
    }

    public void setAscDesc(boolean ascDesc) {
        this.ascDesc = ascDesc;
    }

    public String getWhichProperty() {
        return whichProperty;
    }
    public void setWhichProperty(String whichProperty) {
        this.whichProperty = whichProperty;
    }

    public NewMonthPerEntity(String monthPerId, String userId, String userName,
            String createDate, double leadTotal5, double leadTotal4,
            double ownTotal4) {
        super();
        this.monthPerId = monthPerId;
        this.userId = userId;
        this.userName = userName;
        this.createDate = createDate;
        this.leadTotal5 = leadTotal5;
        this.leadTotal4 = leadTotal4;
        this.ownTotal4 = ownTotal4;
    }





    public NewMonthPerEntity(String monthPerId, String userId, String userName,
            String createDate, double leadTotal5, double leadTotal4,
            double ownTotal4, boolean ascDesc, String whichProperty) {
        super();
        this.monthPerId = monthPerId;
        this.userId = userId;
        this.userName = userName;
        this.createDate = createDate;
        this.leadTotal5 = leadTotal5;
        this.leadTotal4 = leadTotal4;
        this.ownTotal4 = ownTotal4;
        this.ascDesc = ascDesc;
        this.whichProperty = whichProperty;
    }






    //排序方法
    @Override
    public int compareTo(NewMonthPerEntity o) {
        double a1 = this.whichProperty.equals("leadTotal5") ? this.leadTotal5 : (this.whichProperty.equals("leadTotal4") ? this.leadTotal4 :(this.whichProperty.equals("ownTotal4") ? this.ownTotal4 :this.ownTotal4));
        double a2 = o.whichProperty.equals("leadTotal5") ? o.leadTotal5 : (o.whichProperty.equals("leadTotal4") ? o.leadTotal4 :(o.whichProperty.equals("ownTotal4") ? o.ownTotal4 :o.ownTotal4));
        if(this.ascDesc){//若是升序
            return a1 > a2 ? 1  : -1;
        }else{
            return a1 > a2 ? -1 : 1;
        }
    }
    
    
    
    
    
}

@RequestMapping("allMonthPer")
    @ResponseBody
    public TreeSet<NewMonthPerEntity> allMonthPer(HttpServletRequest request,boolean ascDesc,String whichProperty) {
//-----------------部分代码---------------------------------------------------
.
.
.
.
      //原实体 得到的List
        DetachedCriteria criteria = DetachedCriteria.forClass(Monthper.class);
        criteria.add(Restrictions.in("userId", userIds));
        List<Monthper> monthPers = monthperService.list(criteria);
      //新建TreeSet 将原实体的List 对应的放置在新的实体中，放入TreeSet的时候就已经是按照传入【按照 哪个字段排序/升序或降序 】 排好顺序的
        TreeSet<NewMonthPerEntity> newSet = new TreeSet<NewMonthPerEntity>();
        for (Monthper monthper : monthPers) {
            String totalStr = monthper.getTotalStr();
             double leadTotal5 = Double.parseDouble(JSONObject.fromObject(totalStr).getString("leadTotal5"));
             double leadTotal4 = Double.parseDouble(JSONObject.fromObject(totalStr).getString("leadTotal4"));
             double ownTotal4 = Double.parseDouble(JSONObject.fromObject(totalStr).getString("ownTotal4"));
            
            NewMonthPerEntity entity = new NewMonthPerEntity(monthper.getMonthPerId(),monthper.getUserId(),userService.get(monthper.getUserId()).getUserName(),monthper.getCreateDate().toLocaleString(),leadTotal5,leadTotal4,ownTotal4);
            entity.setAscDesc(ascDesc);//设置升序/降序
            if("".equals(whichProperty) || null == whichProperty){
                entity.setWhichProperty("ownTotal4");
            }else{
                entity.setWhichProperty(whichProperty);
            }
            
            newSet.add(entity);
        }
        
        
        return newSet;
//在前台  只需要$.each取出来 追加到页面就好
    }

效果如下图：

 

附带 前台jsp代码

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>考核列表</title>
    
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    
    <link href="../bootstrap/css/bootstrap.min.css" rel="stylesheet">
    <script src="../js/jquery.js"></script>   

  </head>
  
  <body>
    
    <div class="panel panel-primary">
          <div class="panel-heading">
               <div class="form-group"> 
                 <label class="panel-title" >月度绩效考评列表</label>
                 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                   <button type="button" class="btn btn-success thisMonth">本月考核</button>
                  <button type="button" class="btn btn-warning  userRefresh">刷新页面</button>
                  <c:if test="${roleGrade==0 }">
                      <div class="row">
                          <div class="col-lg-2">
                            <div class="input-group">
                              <select class="form-control dep" name="departmentId">
                                        <option value="0">可选择所在部门</option>
                              </select>
                            </div>
                          </div>
                          <div class="col-lg-1">
                            <div class="input-group">
                              <input type="text" class="form-control us"    placeholder="用户名称"  >
                            </div>
                          </div>
                          <div class="col-lg-1">
                            <div class="input-group">
                              <input type="number" class=" form-control mon"   placeholder="查询月份"  >
                            </div>
                          </div>
                          <div class="col-lg-1">
                            <div class="input-group">
                              <button type="button" class="btn btn-default mohu ">模糊查询</button>
                            </div>
                          </div>
                        </div>
                  </c:if>
                  
             </div> 
          </div>
          <div class="panel-body">
          <input type="hidden" class="operationId" value="${operationId}"/>
          <input type="hidden" class="whichProperty" />
          <input type="hidden" class="ascDesc"/>
          
                <table class="table text-center">
                          <tr class="firstTr">
                            <td class="active"> <input type="checkbox" id="checkAll" name="checkAll" /></td>
                          <td class="primary"><h4>考核月份</h4></td>
                          <td class="success"><h4>员工名称</h4></td>
                          <td class="danger"><h4>考评时间</h4></td>
                          <td class="warning"><h4>调控分值 <span class="glyphicon glyphicon-sort" alt="leadTotal5"  style="float: right;"></span></h4></td>
                          <td class="info"><h4>考评分值 <span class="glyphicon glyphicon-sort"  alt="leadTotal4"  style="float: right;"></span></h4></td>
                          <td class="danger"><h4>自评分值 <span class="glyphicon glyphicon-sort" alt="ownTotal4"  style="float: right;"></span></h4></td>
                          <td class="default"><h4>操作</h4></td>
                        </tr>
                 </table>
          </div>
    </div>
    
  </body>
  
  <script src="../bootstrap/js/bootstrap.min.js"></script>
  <script src="../layer/layer.js"></script>
  <script type="text/javascript" src="../js/UUID.js"></script>
  <script type="text/javascript" src="../js/perContent/monthPerContent/allMonth.js"></script>
  
</html>

附带 前台js代码

function refreshAll(ascDesc,whichProperty){
    $("table tbody tr").not(":first").remove();
    $.ajax({url:"../monthPerCon/allMonthPer.htmls",
        dataType:'json',
        type:"post",
        data:{ascDesc:ascDesc,whichProperty:whichProperty},
        traditional:false,
        success:function(data){
            var temp ="";
            $.each(data,function(i,d){
                temp += '<tr>'
                            +' <td class="active"> '
                                +'<input type="checkbox" id="checkAll" name="checkAll" />'
                                +'<input type="hidden"  name="monthPerId" value="'+d.monthPerId+'"/>'
                            +'</td>'
                            +'<td class="primary">'
                                +(new Date(d.createDate).getMonth()+"月考核")
                            +'</td>'
                            +'<td class="success">'
                                +'<input type="hidden"  name="userId" value="'+d.userId+'"/>'
                                +d.userName
                            +'</td>'
                            +'<td class="danger">'
                                +d.createDate
                            +'</td>'
                            +'<td class="warning tips">'
                                +'【调控分值：'+d.leadTotal5+'】'
                            +'</td>'
                            +'<td class="info tips">'
                                +'【考评分值：'+d.leadTotal4+'】'
                            +'</td>'
                            +'<td class="danger tips">'
                                +'【自评分值：'+d.ownTotal4+'】'
                            +'</td>'
                            +'<td class="default">'
                                +'<a class="aClick"><i class="glyphicon glyphicon-list-alt"></i>详情</a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a class="Adelete"><i class="glyphicon glyphicon-trash"></i>删除</a>'    
                            +'</td>'
                        +'</tr>';
                $(".whichProperty").val(d.whichProperty);
                $(".ascDesc").val(d.ascDesc);
            });
            $(".firstTr").after(temp);
            
            
            /*//判断 此时按那列排序 升序降序 改变图标
            var whichProperty = $(".whichProperty").val();
            var ascDesc = $(".ascDesc").val();
            var thisSpan;
            var cla = "";
            whichProperty == "ownTotal4"? thisSpan = $("span").eq(2):(whichProperty == "leadTotal4"? thisSpan = $("span").eq(1) :thisSpan = $("span").eq(0));
            ascDesc == "true" ? cla = "glyphicon glyphicon-sort-by-attributes" : cla="glyphicon glyphicon-sort-by-attributes-alt";
            $(thisSpan).attr("class",cla);*/
        }
    });    
}





function mohu(ascDesc,whichProperty,dep,us,mon){
    
    $("table tbody tr").not(":first").remove();
    $.ajax({url:"../monthPerCon/mohuAllMonthPer.htmls",
        dataType:'json',
        type:"post",
        data:{ascDesc:ascDesc,whichProperty:whichProperty,departmentId:dep,userName:us,month:mon},
        traditional:false,
        success:function(data){
            var temp ="";
            $.each(data,function(i,d){
                temp += '<tr>'
                        +' <td class="active"> '
                            +'<input type="checkbox" id="checkAll" name="checkAll" />'
                            +'<input type="hidden"  name="monthPerId" value="'+d.monthPerId+'"/>'
                        +'</td>'
                        +'<td class="primary">'
                            +(new Date(d.createDate).getMonth()+"月考核")
                        +'</td>'
                        +'<td class="success">'
                            +'<input type="hidden"  name="userId" value="'+d.userId+'"/>'
                            +d.userName
                        +'</td>'
                        +'<td class="danger">'
                            +d.createDate
                        +'</td>'
                        +'<td class="warning tips">'
                            +'【调控分值：'+d.leadTotal5+'】'
                        +'</td>'
                        +'<td class="info tips">'
                            +'【考评分值：'+d.leadTotal4+'】'
                        +'</td>'
                        +'<td class="danger tips">'
                            +'【自评分值：'+d.ownTotal4+'】'
                        +'</td>'
                        +'<td class="default">'
                            +'<a class="aClick"><i class="glyphicon glyphicon-list-alt"></i>详情</a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a class="Adelete"><i class="glyphicon glyphicon-trash"></i>删除</a>'    
                        +'</td>'
                    +'</tr>';
            });
            $(".firstTr").after(temp);
            
        }
    });    

}





$(document).ready(function(){
    refreshAll();
    
    //升序 降序
    $("span").click(function(){
        
        var whichProperty = $(this).attr("alt");
        if($(this).attr("class") == "glyphicon glyphicon-sort"){
            $(this).attr("class","glyphicon glyphicon-sort-by-attributes-alt");
        }else if($(this).attr("class") == "glyphicon glyphicon-sort-by-attributes-alt"){
            $(this).attr("class","glyphicon glyphicon-sort-by-attributes");
        }else if($(this).attr("class") == "glyphicon glyphicon-sort-by-attributes"){
            $(this).attr("class","glyphicon glyphicon-sort-by-attributes-alt");
        }
        
        $("span").not(this).attr("class","glyphicon glyphicon-sort");
        var ascDesc = $(this).attr("class") == "glyphicon glyphicon-sort" ? false : ($(this).attr("class") == "glyphicon glyphicon-sort-by-attributes-alt" ? false : true);
        
        //判断是否模糊查询
         var dep = $(".dep option:selected").val();
         var us = $(".us").val();
         var mon = $(".mon").val();
         if(dep !="" || us !="" || mon !=""){//只要模糊查询有值
             if(( parseInt(mon)<0 || parseInt(mon)>12 )){
                 layer.msg("月份不正确",{icon:2,time:1000});
                 $(".mon").val("");
             }else{
                 mohu(ascDesc,whichProperty,dep,us,mon);
             }
         }else{//否则  查询
             refreshAll(ascDesc,whichProperty);
         }
        
    });
    
    
    
    $(document).on("click",".aClick",function(){
        var monthPerId = $(this).parents("tr").children().first().find("input:hidden").val();
        location.href = "../monthPerCon/showThisMonper.htmls?monthPerId="+monthPerId;
    });
    $(document).on("click",".Adelete",function(){
        var operationId = $(".operationId").val();//操作人的ID
        var userId = $(this).parents("tr").children().eq(2).find(":hidden").val();//本条考核的人员
        if(operationId != userId){
            layer.msg("非本人无法删除！",{icon:2,time:2000});
        }else{
            var monthPerId = $(this).parents("tr").children().first().find("input:hidden").val();
            var leadTotal4 = JSON.parse($(this).parents("tr").children().eq(4).find(":hidden").val()).leadTotal4;
            if( !(leadTotal4 == undefined || leadTotal4=="") ){
                layer.msg("经理已经考评无法删除！");
            }else{
                $.ajax({url:"../monthPerCon/deleteThisMonper.htmls",
                    dataType:'json',
                    type:"post",
                    data:{monthPerId:monthPerId},
                    traditional:false,
                    success:function(data){
                        if(data){
                            layer.msg("删除成功",{icon:1,time:2000},function(){
                                refreshAll();
                            });
                        }else{
                            layer.msg("删除失败",{icon:2,time:2000},function(){
                                refreshAll();
                            });
                        }
                        
                    }
                });
            }
        }
        
//        location.href = "../monthPerCon/deleteThisMonper.htmls?monthPerId="+monthPerId;
    });
    
    //跳转到本月考核页面
    $(".thisMonth").click(function(){
        location.href = "../monthPerCon/perContent.htmls";
    });
    
    
    //部门
    $.getJSON("../department/showAlldepartment.htmls", function(data){
          if(data!=null){
              var temp = "";
              $.each(data,function(i,a){
                  temp+="<option value='"+a.departmentId+"'>"+a.departmentName+"</option>";
              });
              $('.dep option').first().after(temp);
          }
    });
    
    
    //模糊查询
     $(".mohu").click(function(){
         var dep = $(".dep option:selected").val();
         var us = $(".us").val();
         var mon = $(".mon").val();
         if(( parseInt(mon)<0 || parseInt(mon)>12 )){
             layer.msg("月份不正确",{icon:2,time:1000});
             $(".mon").val("");
         }else{
             mohu(false,"ownTotal4",dep,us,mon);
         }
         
     });
    
    
});