如何将一个列表的值传递给一个隐藏的标签？ [英] How to pass a value of a list to a hidden tag?
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问题描述
我有以下的code在我的jsp：
I have the following code in my jsp:
<c:forEach var="value" items="${MyList}" varStatus="loop">
<tr><td><div id="Name1">Here:${value.name}</div></td></tr>
<s:hidden id="Name" name="Name" value="%{value.name}"/>
HTML源代码是如下：
the html source is as following:
<tr><td><div id="Name1">Here:My name is X</div></td></tr>
<input type="hidden" name="Name" value="" id="Name"/>
作为证明div标签正确显示value.name却隐藏标记的值属性为空。我找不到任何解决方案，因为大部分的解决方案并没有涉及到列表中。
我改成了 $ {value.name} ，但遇到了这个错误：根据TLD或属性标记中的文件指令，属性值不接受任何前pressions
As demonstrated the div tag is showing the value.name correctly but the value attribute of hidden tag is empty. I could not find any solution because most of the solutions were not related to list.
I changed it to ${value.name} but ran into this error: "According to TLD or attribute directive in tag file, attribute value does not accept any expressions"
我的JSP完成是如下：
My completed JSP is as following:
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib prefix="s" uri="/struts-tags" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Register</title>
</head>
<body>
<div id="Search">
<label for="message">Travel details</label>
<table border="1">
<s:form action="Search_Search" >
<td>
<s:textfield name="City" label="City" /></td>
<td><s:textfield name="HighRate" label="Budget" /></td>
<td><s:textfield name="Adults" label="Adults"/></td>
<td><s:textfield name="Childs" label="Child (less 15)"/></td>
<td><s:select label="Prefered hotel rate" name="rate" list="rate" value="no preference"/></td>
<td><s:textfield name="Days" label="Days"/></td>
<td><s:radio label="Is the budget fixed" name="BdgFixed" list="BdgFixed"
value="defaultBudget"/>
<td><s:submit/></td>
</s:form>
</table>
</div>
<sx:div>
<table border="1">
<tr>
<c:forEach var="Hotel" items="${HotelsList}" varStatus="loop">
<c:set var="nameVar" scope="request" value="${Hotel.name}"/>
<c:if test="${not loop.first and loop.index % 3 == 0}">
</tr><tr>
</c:if>
<td>
<div id="HotelInfo">
<td>
<s:form action="Search_AddHotel" >
<tr><td><div id="image"><img src=${Hotel.thumbNailUrl} alt="image"/></div></td></tr>
<s:textfield name="Name3" label="Budget" />
<tr><td><div id="Name1">Here:<c:out value="${nameVar}"/></div></td></tr>
<s:hidden id="Name" name="Name" value='${nameVar}'/>
<s:label id="name2" name="name2" value="John"/>
<tr><td><div id="Highest Rate:">Rate:${Hotel.highRate}</div></td></tr>
<tr><td><div id="Address">Address:${Hotel.address}</div></td></tr>
<tr><td>
<s:submit/>
</s:form>
</td></tr>
</td>
</c:forEach>
</tr>
</table>
</sx:div>
</body>
</html>
我完成了Java类是如下：
My completed Java class is as following:
package com.funontour.controller;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import com.funontour.common.Hotels;
import com.funontour.model.DistanceModel;
import com.funontour.model.SearchModel;
import java.io.ByteArrayOutputStream;
import java.io.Reader;
import java.io.StringReader;
import javax.xml.soap.*;
import java.net.*;
import java.util.*;
public class SearchAction {
private String Name;
private String City;
private String HighRate;
private String Adults;
private String Childs;
private List HotelsList;
private List<String> BdgFixed;
private List<String> rate;
private static final String Yes = "Yes";
private static final String No = "No";
public String execute() throws Exception {
generateForm();
// runClient(); //actual rate should be received
// System.out.println("goes back to strut.xml");
return "SUCCESS";
}
public String getName()
{
return Name;
}
public void setName(String name){
this.Name = name;
}
public void AddHotel(){
System.out.println("name is:"+Name);
System.out.println("getName:" + getName());
System.out.println("thisName" + this.Name);
}
public String Search() { // Country is set to AU
System.out.println("In Search method of SearchAction");
Showdetails();
String result = SearchHotel();
generateForm();
return result;
}
public void generateForm(){
BdgFixed = new ArrayList<String>();
BdgFixed.add(Yes);
BdgFixed.add(No);
rate = new ArrayList<String>();
rate.add("1");
rate.add("2");
rate.add("3");
rate.add("4");
rate.add("5");
}
public void Showdetails(){
System.out.println(this.City + " " + this.HighRate + " " + this.Adults + " "
+ this.Childs + " " + this.rate+ " " + this.BdgFixed);
}
public String SearchHotel(){
HotelsList = new ArrayList();
SearchModel searchModel = new SearchModel();
List inputs = new ArrayList<String>();
//If some of these are not entered should ask again
// for multiple choices do not work if nothing has been selected
if(!getCity().isEmpty())
inputs.add(getCity());
else
inputs.add("London");
if(!getHighRate().isEmpty())
inputs.add(getHighRate());
else
inputs.add("0");
if(!getAdults().isEmpty())
inputs.add(getAdults());
else
inputs.add("1");
if(!getChilds().isEmpty())
inputs.add(getChilds());
else
inputs.add("0");
if(!getRate().isEmpty())
inputs.add(this.rate.get(0).toString());
else
inputs.add("1");
if(!getBdgFixed().isEmpty())
inputs.add(this.BdgFixed.get(0).toString());
else
inputs.add("Yes");
if(searchModel.createMessage(inputs) == "SUCCESS")
{
System.out.println("SUCCESS");
setHotelsList(searchModel.getHotelsList());
return "SUCCESS";
}
System.out.println("Failed");
return "SUCCESS";
}
/* Search for the distance
public String Search(){
/*//Search for Suggestion
public String Search(){
System.out.println("In Search method");
SearchModel sm = new SearchModel();
sm.retrieveItems(getCity().toString());
return "SUCCESS";
}*/
public String getCity() {
return City;
}
public void setCity(String city) {
City = city;
}
public String getHighRate() {
return HighRate;
}
public void setHighRate(String highRate) {
HighRate = highRate;
}
public List getHotelsList() {
return HotelsList;
}
public void setHotelsList(List hotelsList) {
HotelsList = hotelsList;
}
public String getAdults() {
return Adults;
}
public void setAdults(String adults) {
Adults = adults;
}
public String getChilds() {
return Childs;
}
public void setChilds(String childs) {
Childs = childs;
}
public List<String> getBdgFixed() {
return BdgFixed;
}
public void setBdgFixed(List<String> bdgFixed) {
BdgFixed = bdgFixed;
}
public List<String> getRate() {
return rate;
}
public void setRate(List<String> rate) {
this.rate = rate;
}
}
我用％{nameVar} 也不过价值仍然是空的。 :(有人帮助PLZ
I used %{nameVar} also but the value is still empty. :( someone help plz
推荐答案
尽量不要使用属性的名称，如值，键等，因为它们可以保留的关键字。
Try not to use property names like value, key, etc., because they could be reserved keywords.
所以变化值不同的东西，看看是否是这样工作的。
So change value to something different and see if is this works.
编辑：
改变这种
＆LT; S：隐藏ID =名称NAME =名称值='$ {} nameVar/＆GT;
到
＆LT; S：隐藏ID =名称NAME =名称值=％{} nameVar/＆GT;
更新：
如果你想使用的forEach 标记然后使用＆LT;输入类型=隐藏名称=名称值=$ {} nameVar＆GT;
或使用＆LT; S：迭代器＆GT; 与
标签＆LT; S：隐藏ID =名称NAME =名称值=％{} nameVar/＆GT;
If you want to use forEach tag then use
<input type="hidden" name="Name" value="${nameVar}">
or use <s:iterator> tag with
<s:hidden id="Name" name="Name" value="%{nameVar}"/>
这篇关于如何将一个列表的值传递给一个隐藏的标签？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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