如何使用JSTL在JSP中获取类的值？
[英]How do I get a value of a class in a JSP using JSTL?
问题描述
Hopefully that title made sense. 
希望这个标题有意义。 I'm trying to get the value of the integer age (which is private and has getters and setters) in the class People. 我正在尝试在People类中获取整数age的值（这是私有的，具有getter和setters）。 ${People.age} isn't bringing anything back. $ {People.age}没有带回任何东西。 Is there something i'm missing out on? 有什么我想念的吗？ Thank you. 谢谢。
JSP with JSTL: 带有JSTL的JSP：
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="ages" value="${People.age}"/>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<p style="color:black;font-size:100px">this persin is ${findThatGuy.People.age}</p>
<c:out value="${findThatGuy.People.age}"/>
</body>
</html>
2 个解决方案
解决方案1
0 2017-11-08 14:25:52
You need to have getter setter for People class in findThatGuy bean Class. 您需要在findThatGuy bean类中具有People类的getter setter方法。 Also make sure you set this in request attribute as setAttribute. 还要确保在请求属性中将此设置为setAttribute。
public Class findThatGuy{
private People people;
public People getPeople(){
return people;
}
public void setPeople(People people){
this.people = people;
}
}
httpRequest.setAttribute("findThatGuy", findThatGuy);
In Jsp use
<c:out value="${findThatGuy.people.age}"/>
解决方案2
0 2017-11-08 15:02:03
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