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使用Spring MVC，EL有效，但JSTL不起作用

[英]EL works but JSTL does not, using Spring MVC

 原文  2015-11-13 19:01:57  0   2    java/ spring/ jsp/ jstl/ el

問題描述

我已經花了幾個小時了，仍然無法弄清楚！ 搜索了有關JSTL的所有相關主題，但是沒有運氣。

我的網站使用的是Spring 3.1，以前使用JSTL，但是切換到新的組件並重新設置環境后，事實並非如此。 我不知道缺少什么！

有趣的是，當我執行一個簡單的<c:out value="${topWorks}"/>它將為servlet jsp返回錯誤“ Servlet.service（）拋出異常org.apache.jasper.JasperException：/ user / indexx。 jsp（行：176，列：5）在導入的前綴為“ c”的標簽庫中未定義標簽“ out”

但是我的EL正在工作，因為所有的javascript和CSS都已加載，因為我使用了 

<script src="${pageContext.request.contextPath}/js/bootstrap.min.js"></script>

這是我所擁有的：

  1. 在JSP頁面頂部<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

  2. web.xml是3.0 

     <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">

  3. Servlet具有jstlview 

     <bean id="jstlViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="prefix" value="/"/> <property name="suffix" value=".jsp"/>

4.POM文件，包括jstl庫（我也嘗試過如stackExchange的JSTL信息頁所建議的那樣刪除jstl-1.2，也不起作用） 

<dependencies>
<dependency>
  <groupId>org.eclipse.persistence</groupId>
  <artifactId>javax.persistence</artifactId>
  <version>2.0.0</version>
  <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.5</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.servlet.jsp</groupId>
    <artifactId>jsp-api</artifactId>
    <version>2.1</version>
    <scope>provided</scope>
</dependency>
<dependency>
  <groupId>jstl</groupId>
  <artifactId>jstl</artifactId>
  <version>1.2</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>taglibs</groupId>
  <artifactId>standard</artifactId>
  <version>1.1.2</version>
  <scope>compile</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>

<dependency>
    <groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.1</version>
</dependency>
<dependency>
    <groupId>javax.el</groupId>
    <artifactId>el-api</artifactId>
    <version>2.2.1-b04</version>
    <scope>provided</scope>
</dependency>
<dependency>
  <groupId>javax.xml.bind</groupId>
  <artifactId>jaxb-api-osgi</artifactId>
  <version>2.2.1</version>
  <scope>provided</scope>
</dependency>
<dependency>
  <groupId>javax.ws.rs</groupId>
  <artifactId>jsr311-api</artifactId>
  <version>1.1.1</version>
  <scope>provided</scope>
</dependency>

<dependency>
  <groupId>javax.mail</groupId>
  <artifactId>mail</artifactId>
  <version>1.4.3</version>
  <scope>provided</scope>
</dependency>
<dependency>
  <groupId>javax.xml</groupId>
  <artifactId>webservices-api-osgi</artifactId>
  <version>2.0.1</version>
  <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.jboss.weld</groupId>
  <artifactId>weld-osgi-bundle</artifactId>
  <version>1.0.1-SP3</version>
  <scope>provided</scope>
</dependency>
<dependency>
  <groupId>javax.servlet.jsp.jstl</groupId>
  <artifactId>javax.servlet.jsp.jstl-api</artifactId>
  <version>1.2.1</version>
    <exclusions>
        <exclusion>
            <artifactId>jsp-api</artifactId>
            <groupId>javax.servlet.jsp</groupId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-aop</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-asm</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-aspects</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-beans</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context-support</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-core</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-expression</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-instrument</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-instrument-tomcat</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.aspectj</groupId>
  <artifactId>aspectjweaver</artifactId>
  <version>1.6.9</version>
</dependency>
<dependency>
  <groupId>commons-pool</groupId>
  <artifactId>commons-pool</artifactId>
  <version>1.5.3</version>
</dependency>
<dependency>
  <groupId>commons-collections</groupId>
  <artifactId>commons-collections</artifactId>
  <version>3.2</version>
</dependency>
<dependency>
  <groupId>log4j</groupId>
  <artifactId>log4j</artifactId>
  <version>1.2.16</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jdbc</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-orm</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-tx</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>c3p0</groupId>
  <artifactId>c3p0</artifactId>
  <version>0.9.1.2</version>
</dependency>
<dependency>
  <groupId>commons-dbcp</groupId>
  <artifactId>commons-dbcp</artifactId>
  <version>1.4</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jms</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-oxm</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-web</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.directwebremoting</groupId>
    <artifactId>dwr</artifactId>
    <version>3.0.0-RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc-portlet</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-struts</artifactId>
  <version>3.1.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>commons-httpclient</groupId>
  <artifactId>commons-httpclient</artifactId>
  <version>3.1</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-acl</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-aspects</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-cas</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-config</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-core</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-crypto</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-ldap</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-openid</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-remoting</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-taglibs</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-web</artifactId>
  <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.webflow</groupId>
  <artifactId>spring-webflow</artifactId>
  <version>2.3.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.webflow</groupId>
  <artifactId>spring-binding</artifactId>
  <version>2.3.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.webflow</groupId>
  <artifactId>spring-js</artifactId>
  <version>2.3.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework.webflow</groupId>
  <artifactId>spring-js-resources</artifactId>
  <version>2.3.1.RELEASE</version>
</dependency>
<dependency>
  <groupId>ognl</groupId>
  <artifactId>ognl</artifactId>
  <version>2.6.9</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.36</version>
</dependency>
<!-- For image process -->
<dependency>
  <groupId>net.coobird</groupId>
  <artifactId>thumbnailator</artifactId>
  <version>[0.4, 0.5)</version>
</dependency>

<!-- for Thumbnailator -->
<dependency>
    <groupId>net.coobird</groupId>
    <artifactId>thumbnailator</artifactId>
    <version>0.4.8</version>
</dependency>


<!-- for multi file upload -->
<dependency>
    <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.2</version>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
    </dependency>
    <dependency>
    <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.9.12</version>
    </dependency>
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-core-asl</artifactId>
        <version>1.9.12</version>
</dependency>

這是完整的錯誤消息 

    Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: /user/indexx.jsp (line: 176, column: 5) No tag "out" defined in tag library imported with prefix "c"
    at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42)
    at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:443)
    at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:199)
    at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1199)
    at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1451)
    at org.apache.jasper.compiler.Parser.parse(Parser.java:138)
    at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:242)
    at org.apache.jasper.compiler.ParserController.parse(ParserController.java:102)
    at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:341)
    at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:662)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:364)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:486)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:411)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338)
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at com.yuting.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:112)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)

JSP頁面 

 <!DOCTYPE html>
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>XXX</title>
    <script src="${pageContext.request.contextPath}/js/jquery-1.11.3.js"></script>
    <!-- news ticker -->
    <script src="${pageContext.request.contextPath}/js/jquery.bootstrap.newsbox.min.js"></script>
    <!-- Bootstrap-->
    <link href="${pageContext.request.contextPath}/css/Bootstrap/SlateBootstrap.css" rel="stylesheet">
    <link href="${pageContext.request.contextPath}/css/appleColorsBootstrap.css" rel="stylesheet">

    <script src="${pageContext.request.contextPath}/js/bootstrap.min.js"></script>
  </head>
  <body>
              <c:out value="${topWorks}"/>
  </body>
</html>

Spring servlet配置 

<?xml version="1.0" encoding="UTF-8"?>
<beans 
    xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.1.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
    http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">   
    <description>Spring-DispatcherServlet</description>

    <context:component-scan base-package="com.yuting"/>

    <bean id="jstlViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/"/>
        <property name="suffix" value=".jsp"/>
    </bean> 
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">  
        <property name="order" value="2" />  
    </bean>  

    <bean id="localeResolver" class="org.springframework.web.servlet.i18n.CookieLocaleResolver">
        <property name="cookieName">
            <value>cim_locale</value>
        </property>
        <property name="cookieMaxAge">
            <value>31536000</value>
        </property>
    </bean>


    <mvc:resources mapping="/css/**" location="/css/" cache-period="31556926"/>
    <mvc:resources mapping="/js/**" location="/js/" cache-period="31556926"/>

    <mvc:annotation-driven />

    <dwr:configuration />   
       <dwr:controller id="dwrController" debug="true" />
       <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
         <property name="alwaysUseFullPath" value="true"/>
         <property name="mappings">
         <props>
           <prop key="/dwr/**/*">dwrController</prop>
         </props>
         </property>
       </bean>  
    <dwr:annotation-scan base-package="com.yuting.*" scanDataTransferObject="true" scanRemoteProxy="true"/>   


</beans>

2 個解決方案

解決方案1
 0  2015-11-13 19:42:33

也許您的taglib錯誤，請在您的jsp文件中嘗試以下操作： 

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

解決方案2
 0 已采納  2015-11-14 18:04:08

經過一段時間的擺弄，我設法解決了這個問題，仍然使用了我們網站建議的方法。 但是我發現我有一個名為tag的額外文件夾，其中包含一些自定義標簽，刪除了這些文件夾，並刪除了POM中所有與jstl相關的庫。 它奏效了...

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