javax.servlet.ServletException: javax.servlet.jsp.JspTagException: Invalid property in &lt;set&gt;: "age2"

javax.servlet.ServletException: javax.servlet.jsp.JspTagException: Invalid property in <set>: "age2"

最後更新：2017-01-19 來源：互聯網

上載者：User

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標籤：request 異常 efi glib 靜態 util lang entity span

<%@ 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>    <base href="<%=basePath%>">         <title>My JSP ‘index.jsp‘ starting page</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"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">-->  </head>     <body><%--   <!-- 靜態擷取 -->    <c:out value="helloworld"></c:out> <!-- 動態擷取 --> <% request.getSession().setAttribute("username", "lili");  %> <c:out value="${3/2} "></c:out> <% String username="username";  String username1=""; request.setAttribute("username1", username1); //放進requestScope對象裡，用EL運算式取 request.setAttribute("username", username);  %>  <!-- false -->  <c:out value="${empty username }"></c:out><br>  <!-- true -->  <c:out value="${empty username1 }"></c:out><br>  <!-- true -->  <c:out value="${empty user }"></c:out><br>  <!-- 使用out標籤輸出常量 -->  <c:out value="hello World"></c:out><br>  <!-- 使用out標籤輸出變數 -->  <%  request.getSession().setAttribute("name", "li");   %>  <c:out value="${name }"></c:out><br>  <!-- default屬性的使用 -->  <c:out value="${name1 }" default="error"></c:out><br>  <!-- escapeXml="true屬性設定是否轉義，預設為true不轉義-->  <c:out value="&ltout標籤&gt" escapeXml="false"></c:out>    <!-- 運算式控制標籤set標籤，存值到scope中 -->  <c:set value="today" var="day" scope="session"></c:set><br>  <!-- 輸出day，值應該是today -->  <c:out value="${day }"></c:out>  <!-- 運算式控制標籤set標籤，存值到scope中 -->  <c:set  var="age" scope="application">eleven</c:set><br>  <!-- 輸出day，值應該是today -->  <c:out value="${age }"></c:out>     <!-- 存值到javabean中 -->  <!-- 通過set向Person屬性賦值 -->  <!-- 賦值和輸出都要用EL運算式 --> --%>  <jsp:useBean id="person" class="com.imooc.entity.Person" ></jsp:useBean>  <c:set target="${person}" property="age2"  value="12"></c:set><%--   <c:out value="${person[age2]}"></c:out> --%>  </body></html>

　　如果target="person",如下，會報如題異常！

<c:set target="person" property="age2"  value="12"></c:set>

正常寫法如下：

<c:set target="${person}" property="age2"  value="12"></c:set>

javax.servlet.ServletException: javax.servlet.jsp.JspTagException: Invalid property in <set>: "age2"

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