码迷,mamicode.com
首页 > 其他好文 > 详细

list<实体类>互相嵌套和前台取值问题

时间:2019-04-25 09:16:02      阅读:699      评论:0      收藏:0      [点我收藏+]

标签:back   _id   class   role   查询   读取   ring   遇到   mobile   

list<实体类>嵌套list<实体类>,必须保证嵌套的实体类里面有这个list对象,把这个list<实体类>当做一个对象

这是需要解析的数据,并把这些数据封装成list<实体类>对象,传给前台

<root>
    <RETURN_CODE>0</RETURN_CODE>
    <RETURN_DESC>成功!</RETURN_DESC>
    <RETURN_INFO>
        <order_info>
            <so_nbr>7004519</so_nbr>
            <cust_id>2028814</cust_id>
            <appl_date>2019-03-21 15:27:56</appl_date>
            <compl_date>null</compl_date>
            <deal_staff_name>null</deal_staff_name>
            <deal_staff_mobile>null</deal_staff_mobile>
            <compl_phenom>无法打开互动电视页面</compl_phenom>
            <fault_reason>null</fault_reason>
            <book_date>2019-04-19 14:00:00</book_date>
            <book_time>14:00--18:00</book_time>
            <run_sts>待处理</run_sts>
            <deal_log>
                <deal_info>
            <
deal_time>2019-03-29 08:58:27</deal_time><deal_type>领单</deal_type><deal_name>王超群</deal_name><deal_mobile>null</deal_mobile>
          </
deal_info> <deal_info>
            <
deal_time>2019-03-29 09:00:04</deal_time><deal_type>回单</deal_type><deal_name>王超群</deal_name><deal_mobile>null</deal_mobile>
          </
deal_info> <deal_info>
            <
deal_time>2019-03-22 17:01:57</deal_time><deal_type>定单生成</deal_type><deal_name>系统</deal_name><deal_mobile>null</deal_mobile>
          </
deal_info> </deal_log> </order_info> <order_info> <so_nbr>7004505</so_nbr> <cust_id>2028814</cust_id> <appl_date>2019-04-19 08:48:50</appl_date> <compl_date>null</compl_date> <deal_staff_name>null</deal_staff_name> <deal_staff_mobile>null</deal_staff_mobile> <compl_phenom>整体网速慢</compl_phenom> <fault_reason>null</fault_reason> <book_date>2019-04-19 08:30:00</book_date> <book_time>08:30--12:00</book_time> <run_sts>待处理</run_sts> <deal_log> <deal_info>
            <
deal_time>2019-04-19 08:49:02</deal_time><deal_type>定单生成</deal_type><deal_name>系统</deal_name><deal_mobile>null</deal_mobile>
          </
deal_info> </deal_log> </order_info> </RETURN_INFO> </root>

下面是实体类,为了节省空间get、set方法没写;如果不写toString()方法,看不到数据

public class OrderInfo {

    /**
     * 定单号
     */
    private String soNbr;
    
    /**
     * 客户证号
     */
    private String custId;
    
    /**
     * 受理时间
     */
    private String applDate;
    
    /**
     * 完成时间
     */
    private String complDate;/**
     * dealLogInfo
     */
    private List<DealLogInfo> dealLogInfo;

}
public class DealLogInfo {

    /**
     * 操作时间 yyyy-mm-dd hh24:mi:ss
     */
    private String dealTime;
    
    /**
     * 操作类型
     */
    private String dealType;
    
    /**
     * 操作人
     */
    private String dealName;
    
    /**
     * 操作人联系方式
     */
    private String dealMobile;
    
}

逻辑代码,不全

List<OrderInfo> orderList = new ArrayList<OrderInfo>();
//存储到list实体类集合
OrderInfo or = new OrderInfo();
orderList.add(or);
or.setApplDate(appl_date);
or.setBookDate(book_date);
or.setBookTime(book_time);

List<DealLogInfo> dealInfoList = new ArrayList<DealLogInfo>();
DealLogInfo deal = new DealLogInfo();
dealInfoList.add(deal);
for (Element element : dealList) {
    deal.setDealTime(deal_time);
    deal.setDealType(deal_type);
    deal.setDealName(deal_name);
    deal.setDealMobile(deal_mobile);
}
or.setDealLogInfo(dealInfoList);
request.setAttribute("orderList", orderList);

前台取值

遇到的错误:

el表达式获取list数据报错:java.lang.NumberFormatException:For input string: "xxx"

后来查询资料,是由于list会默认将后面的数据当做下标读取,会出现这个情况

错误代码:

<c:forEach items="${orderList}" var="orderList" >
    <ul >
        <li>
              <div>客户证号:</div>
               <div>${orderList.custId}</div>
         </li>
         <li>
                <div>故障现象:</div>
                <div>${orderList.complPhenom}</div>
         </li>  
    </ul>
        <ul>
        <li class="title color-6">派单</li>
        <li class="detail color-9">
            <p>${orderList.dealLogInfo.dealTime}</p> 
        </li>
    </ul>
</c:forEach>

正确代码

只要标明下标或者再次foreach遍历roles的list就可以了

<c:forEach items="${orderList}" var="orderList" >
    <ul >
        <li>
              <div>客户证号:</div>
               <div>${orderList.custId}</div>
         </li>
         <li>
                <div>故障现象:</div>
                <div>${orderList.complPhenom}</div>
         </li>  
    </ul>
     <c:forEach items="${orderList.dealLogInfo}" var="dealLogInfo">
        <ul>
        <li class="title color-6">派单</li>
        <li class="detail color-9">
            <p>${dealLogInfo.dealTime}</p> 
        </li>
    </ul>
    </c:forEach>
</c:forEach>

页面需要引入c标签代码,否则也会爆这个错误

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!doctype html>
<html lang="en">
<%  
   String openId = request.getAttribute("openId") == null ? "" : request.getAttribute("openId").toString();
   String area_id = request.getAttribute("area_id") == null ? "" : request.getAttribute("area_id").toString();
   String customercode = request.getAttribute("cust_id") == null ? "" : request.getAttribute("cust_id").toString();
   
%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 

 

list<实体类>互相嵌套和前台取值问题

标签:back   _id   class   role   查询   读取   ring   遇到   mobile   

原文地址:https://www.cnblogs.com/zybcn/p/10766023.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!