jfinal 报异常：java.lang.NoSuchMethodError: javax.servlet.ServletContext.getJspConfigDescriptor

Question

jfinal 是1.2版的，访问时出现下面异常：

HTTP ERROR 500

Problem accessing /admin/site. Reason:

javax.servlet.ServletContext.getJspConfigDescriptor()Ljavax/servlet/descriptor/JspConfigDescriptor;

Caused by:

java.lang.NoSuchMethodError: javax.servlet.ServletContext.getJspConfigDescriptor()Ljavax/servlet/descriptor/JspConfigDescriptor;
	at org.apache.jasper.compiler.JspConfig.processWebDotXml(JspConfig.java:106)
	at org.apache.jasper.compiler.JspConfig.init(JspConfig.java:196)
	at org.apache.jasper.compiler.JspConfig.findJspProperty(JspConfig.java:259)
	at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:166)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
	at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:625)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:276)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:103)
	at com.jfinal.render.JspRender.render(JspRender.java:56)
	at com.jfinal.core.ActionHandler.handle(ActionHandler.java:94)
	at com.jfinal.core.JFinalFilter.doFilter(JFinalFilter.java:72)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
	at org.eclipse.jetty.server.Server.handle(Server.java:365)
	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485)
	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926)
	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
	at java.lang.Thread.run(Thread.java:619)

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不知道如何解决？

Answer 1

使用Jfinal1.2后会报该这个错误，如果使用myeclipse，把JAVA EE 5 Libraries库删除，即可解决问题，此问题请波波查证一下，是否为新版本jettry带了导致冲突的JAR包。

Answer 2

是的，我是用demo改的，jsp版的demo也运行不起来，freemarker倒是可以。

Answer 3

有人碰到这样的问题吗？是什么原因呢？

Answer 4

需要先将myeclipse里自带的servlet包移除（这步很重要的，不然只加后面的不管用的），然后再加上tomcat中的两个jar包

Answer 5

jfinal3.0配合jetty-server-8.1.8.jar，视图使用jsp，也会有这个问题。

Answer 6

jetty-server-6.1.26.jar 换成 
jetty-server-8.1.8.jar 了没有，这里有下载: http://code.google.com/p/jfinal/downloads/list

Answer 7

@JFinal在不在呀？

Answer 8

配置了！

public void configConstant(Constants me) {
  // 加载少量必要配置，随后可用getProperty(...)获取值
  loadPropertyFile("tbynet.properties");
  me.setDevMode(getPropertyToBoolean("devMode", false));
  me.setViewType(ViewType.JSP);
  }

Answer 9

你配置了JfinalConfig么？

Answer 10

我和楼主的情况一样，用楼上哥的“把JAVA EE 5 Libraries库删除”方法解决了，谢谢！

Answer 11

开发时用的 tomcat 还是 JFinal 集成的 jetty ?

Answer 12

jetty

Answer 13

问题解决了，是我的myeclipse 6自带的servlet版本低了，需要将那个移出，在tomcat 中找到jsp-api.jar和servlet-api.jar，加到项目lib中就行了。