在jsp中使用jstl和el找不到属性异常

嗨，我试图通过我的session中的对象列表进行循环。我使用jstl循环了会话中的每个对象。这里是jsp代码在jsp中使用jstl和el找不到属性异常

<c:forEach items="${sessionScope}" var="item"> 
    <b>${item.key}</b> 
    <table border=1> 
     <c:forEach items="${item.nodes}" var="node"> 

      <tr> 
       <td>${node.link}</td> 
       <td>${node.title}</td> 
       <td>${node.description}</td> 
      </tr> 

     </c:forEach> 
    </table> 

</c:forEach>

这里是节点类

public class Nde { 

    private String title; 
    private String link; 
    private String description; 
    public String getTitle() { 
     return title; 
    } 
    public void setTitle(String title) { 
     this.title = title; 
    } 
    public String getLink() { 
     return link; 
    } 
    public void setLink(String link) { 
     this.link = link; 
    } 
    public String getDescription() { 
     return description; 
    } 
    public void setDescription(String description) { 
     this.description = description; 
    } 

}

并且其具有的Nde类对象的列表中PersonalData类。

public class PersonalData { 
    private List<Nde> nodes; 
    private static int count=0; 
    private String s; 

    public List<Nde> getNodes() { 
     return nodes; 
    } 



    public String getS() { 
     return s; 
    } 



    public void setS(String s) { 
     this.s = s; 
    } 



    public void setNodes(List<Nde> nodes) { 
     this.nodes = nodes; 
    } 



    public PersonalData() { 
     super(); 
     count++; 
     nodes = new ArrayList<Nde>(); 

    } 

    public static int getCount() { 
     return count; 
    } 
}

，同时通过项目循环我得到以下异常

che.jasper.el.JspPropertyNotFoundException: /WEB-INF/views/display.jsp(17,0) '${item.nodes}' Property 'nodes' not found on type javax.servlet.jsp.el.ImplicitObjectELResolver$ScopeMap$ScopeEntry 
org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:109) 
org.apache.jsp.WEB_002dINF.views.display_jsp._jspx_meth_c_005fforEach_005f1(display_jsp.java:155) 
org.apache.jsp.WEB_002dINF.views.display_jsp._jspx_meth_c_005fforEach_005f0(display_jsp.java:122) 
org.apache.jsp.WEB_002dINF.views.display_jsp._jspService(display_jsp.java:78) 
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) 
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238) 
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262) 
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180) 
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950) 
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) 
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:647) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

为什么不能找到节点属性？

来源

2013-03-30 user918204

你能告诉你如何添加此'sessionScope'为会话属性和它的内容是什么？顺便说一下，我**强烈建议将'sessionScope'的名称更改为更像'nodesOnSession'或更合适的名称。 –

会话范围变量用于检索会话变量。我无法更改其名称。 – user918204

然后你会错误的。当您只应查找**您的**会话属性时，您正在导航代码中的所有会话属性。 –

尝试使用

<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> 

<c:forEach items="${sessionScope}" var="item"> 
<c:if test="${fn:startsWith(item.key,'myData')}" > 
    <b>${item.key}</b> 
    <table border=1> 
     <c:forEach items="${item.value.nodes}" var="node"> 
      <tr> 
       <td>${node.link}</td> 
       <td>${node.title}</td> 
       <td>${node.description}</td> 
      </tr> 
     </c:forEach> 
    </table> 
</c:if> 
</c:forEach>

来源

2013-03-31 03:32:28 rickz

谢谢rickz :) – user918204

在jsp中使用jstl和el找不到属性异常

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