JSP表达式语言错误 [英] JSP Expression Language Error
本文介绍了JSP表达式语言错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我创建了一个动态Web模块项目usig STS和Spring MVC.问题是我已经在模型中添加了一个字符串，但是无法使用EL在JSP页面上显示它.
I have created a dynamic web module project usig STS and Spring MVC. The problem is I have add a string into a Model but it cannot be display on the JSP page using EL.
我可以知道这有什么问题吗?
May I know what wrong with it?
以下是详细信息: JSP页面
Below is the details: JSP Page
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1" isELIgnored="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Spring MVC</title>
</head>
<body>
Home
<br />
<c:out value="${message}" />
</body>
</html>
Web.xml
<?xml version="1.0" encoding="UTF-8"?>
<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_2_5.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">
MVC控制器:
@Controller
public class HomeController {
public HomeController() {
super();
}
@RequestMapping(value="/home", method=RequestMethod.GET)
public ModelAndView showHomePage() {
// View Name - Model Name - Model Data
return new ModelAndView("home", "message", "Hello Spring MVC");
}
}
Dispatcher-servlet.xml
Dispatcher-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- http://www.jpalace.org/docs/tutorials/spring/mvc_10.html -->
<!-- Context Scan -->
<context:component-scan base-package="com.peter.controller"/>
<!-- Handler Mapping -->
<bean id="handlerMapping" class="org.springframework.web.portlet.mvc.annotation.DefaultAnnotationHandlerMapping">
</bean>
<!-- Handler Adapter - AnnotationMethodHandlerAdapter -->
<!-- Invoke Handler Method -->
<bean id="handlerAdapter" class="org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter">
</bean>
<!-- Pre/Post Handler Interceptor -->
<!--
Implement HandlerInterceptor
Declare HandlerInterceptor inside DefaultAnnotationHandlerMapping property or
globally inside <mvc:interceptors>
Need configure Filter object inside web.xml
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
<property name="interceptors">
<list>
<bean class="pckg.MyInterceptor1"/>
<bean class="pckg.MyInterceptor2"/>
</list>
</property>
</bean>
<mvc:interceptors>
<bean class="pckg.MyInterceptor1"/>
<bean class="pckg.MyInterceptor2"/>
</mvc:interceptors>
-->
<!-- View Resolver -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
<property name="prefix" value="/WEB-INF"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- Exception Resolver -->
<!-- Register Interceptor, Message Resource, Bean validation support, Message conversion and field formatting -->
<mvc:annotation-driven />
</beans>
我的构建路径中有JSTL.jar.在Java构建路径上找不到关于"c:out"的标记处理程序类(org.apache.taglibs.standard.tag.rt.core.OutTag)的警告消息.
I have JSTL.jar in my build path. There is warning message about the The tag handler class for "c:out" (org.apache.taglibs.standard.tag.rt.core.OutTag) was not found on the Java Build Path
请帮助.
谢谢.
推荐答案
- 从Maven存储库(http://repo1.maven.org/maven2/javax/servlet/jstl/1.2/)下载jstl-1.2.jar.
-
确保 该jar文件位于Web应用程序的WEB-INF \ lib文件夹中.
- Download jstl-1.2.jar from the maven repo (http://repo1.maven.org/maven2/javax/servlet/jstl/1.2/).
Ensure that the jar is available in WEB-INF\lib folder of your web application.
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