Java 我的jsp不允许使用表达式lanugage

HTTP状态500-java.lang.NoClassDefFoundError:无法初始化类org.apache.jasper.el.ELContextImpl

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类型异常报告

message java.lang.NoClassDefFoundError: Could not initialize class org.apache.jasper.el.ELContextImpl

description The server encountered an internal error that prevented it from fulfilling this request.

exception 

javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class org.apache.jasper.el.ELContextImpl
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:348)
    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:236)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:257)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1183)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:902)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)


root cause 

java.lang.NoClassDefFoundError: Could not initialize class org.apache.jasper.el.ELContextImpl
    org.apache.jasper.compiler.Validator$ValidateVisitor.prepareExpression(Validator.java:1618)
    org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:748)
    org.apache.jasper.compiler.Node$ELExpression.accept(Node.java:968)
    org.apache.jasper.compiler.Node$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:236)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:257)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1183)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:902)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

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注意，根本原因的完整堆栈跟踪在Apache Tomcat/7.0.57日志中可用。

我使用IsAligned=false，当使用${status.value}或${status.errorMessages}时，获取异常如果这是一个Maven项目，您可以发布POM吗？实际上，您应该执行与下面建议完全相反的操作，并确保不在容器提供的web INF/lib中包含JAR。

isAligned=“false”

用于

${…}

<对于

{…}

，code>deferredSyntaxAllowedAsLiteral=“false”。尽管这两个标志或多或少都是默认的，如果不是全局配置的话。