【Tips】使用自定义标签时遇到org.apache.jasper.JasperException: Unable to compile class for JSP

原创 于 2017-01-25 21:29:04 发布 · 2.6k 阅读 · 1 ·
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#jstl #Web项目

本文介绍了在Web项目中遇到org.apache.jasper.JasperException的错误，原因是tag文件包含.jspf文件并导入了项目类。解决方法是删除与类相关的导入语句，对旧代码进行调整。

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报错信息如下：

一月 25, 2017 9:28:20 下午 org.apache.catalina.core.ApplicationDispatcher invoke
严重: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: /WEB-INF/tags/template/loggedOut.tag (line: 4, column: 1) /WEB-INF/jsp/base.jspf (line: 6, column: 8) <%@ page directive cannot be used in a tag file
	at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42)
	at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:291)
	at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:97)
	at org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:348)
	at org.apache.jasper.compiler.Parser.parseIncludeDirective(Parser.java:381)
	at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:484)
	at org.apache.jasper.compiler.Parser.parseFileDirectives(Parser.java:1800)
	at org.apache.jasper.compiler.Parser.parse(Parser.java:142)
	at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244)
	at org.apache.jasper.compiler.ParserController.parseTagFileDirectives(ParserController.java:172)
	at org.apache.jasper.compiler.TagFileProcessor.parseTagFileDirectives(TagFileProcessor.java:498)
	at org.apache.jasper.compiler.ImplicitTagLibraryInfo.getTagFile(ImplicitTagLibraryInfo.java:181)
	at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1231)
	at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1473)
	at org.apache.jasper.compiler.Parser.parse(Parser.java:145)
	at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244)
	at org.apache.jasper.compiler.ParserController.parse(ParserController.java:105)
	at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:201)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:372)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:333)
	at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:600)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:715)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:460)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)
	at com.wrox.LoginServlet.doGet(LoginServlet.java:53)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1425)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)

一月 25, 2017 9:28:20 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [loginServlet] in context with path [/Code] threw exception [org.apache.jasper.JasperException: Unable to compile class for JSP] with root cause
org.apache.jasper.JasperException: /WEB-INF/tags/template/loggedOut.tag (line: 4, column: 1) /WEB-INF/jsp/base.jspf (line: 6, column: 8) <%@ page directive cannot be used in a tag file
	at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42)
	at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:291)
	at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:97)
	at org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:348)
	at org.apache.jasper.compiler.Parser.parseIncludeDirective(Parser.java:381)
	at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:484)
	at org.apache.jasper.compiler.Parser.parseFileDirectives(Parser.java:1800)
	at org.apache.jasper.compiler.Parser.parse(Parser.java:142)
	at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244)
	at org.apache.jasper.compiler.ParserController.parseTagFileDirectives(ParserController.java:172)
	at org.apache.jasper.compiler.TagFileProcessor.parseTagFileDirectives(TagFileProcessor.java:498)
	at org.apache.jasper.compiler.ImplicitTagLibraryInfo.getTagFile(ImplicitTagLibraryInfo.java:181)
	at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1231)
	at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1473)
	at org.apache.jasper.compiler.Parser.parse(Parser.java:145)
	at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244)
	at org.apache.jasper.compiler.ParserController.parse(ParserController.java:105)
	at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:201)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:372)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:333)
	at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:600)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:715)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:460)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)
	at com.wrox.LoginServlet.doGet(LoginServlet.java:53)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1425)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)

报错原因：tag文件include一个.jspf文件，而这个jspf文件中存在该项目类的导入语句，因此报错。

解决办法：去掉关于类的导入语句（旧代码更改）

相关文件如下：

1. tag文件：
<%@ tag body-content="scriptless" trimDirectiveWhitespaces="true" %>
<%@ attribute name="htmlTitle" type="java.lang.String" rtexprvalue="true" required="true" %>
<%@ attribute name="bodyTitle" type="java.lang.String" rtexprvalue="true" required="true" %>
<%@ include file="/WEB-INF/jsp/base.jspf"%>
<template:main htmlTitle="${htmlTitle}" bodyTitle="${bodyTitle}">
    <jsp:attribute name="headContent">
        <link rel="stylesheet" href="<c:url value="/CSS/login.css" />" />
    </jsp:attribute>
    <jsp:attribute name="navigationContent" />
    <jsp:body>
        <jsp:doBody />
    </jsp:body>
</template:main>
2. base.jspf文件：
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%>
<%@ taglib prefix="wrox" uri="http://www.wrox.com/jsp/tld/wrox" %>
<%@ taglib prefix="template" tagdir="/WEB-INF/tags/template" %>
<%@ page import="com.wrox.*" %>
import这行删掉就运行正常了。


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