访问JSP页面jstl表达式使用错误,详细错误如下:
org.apache.jasper.JasperException: /WEB-INF/views/show.jsp (line: 46, column: 28) According to TLD or attribute directive in tag file, attribute value does not accept any expressions
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:443)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:149)
org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1241)
org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:876)
org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1553)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2392)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2444)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2450)
org.apache.jasper.compiler.Node$Root.accept(Node.java:474)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2392)
org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1845)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:218)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:341)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:657)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1228)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1011)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
出现上述错误的原因是,在JSP页面使用了fmt标签库
原因:
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt" %>
//使用了日期格式化方法
<fmt:formatDate pattern="yyyy-MM-dd" value="${user.birthday}" />
出现错误的原因是使用的是jstl1.2,在jstl1.0和jstp1.1、jstl1.2版本在使用标签库的时候存在一定的差别,在jstl1.0以后的版本uri都应该加上/jsp,引用方法如下:
解决方法一:(推荐)
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
//使用了日期格式化方法
<fmt:formatDate pattern="yyyy-MM-dd" value="${user.birthday}" />
解决方法二:
修改web.xml和jstl库版本
//修改2.3以上版本为2.3及以下版本版本
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="myweb" version="3.0">