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我正在使用Tomcat服务器和Eclipse,今天我正在运行我的第一个servlet。Servlet异常
但我得到以下异常:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error() that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error allocating a servlet instance
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
java.lang.Thread.run(Unknown Source)
root cause
java.lang.UnsupportedClassVersionError: Bad version number in .class file
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(Unknown Source)
java.security.SecureClassLoader.defineClass(Unknown Source)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1677)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:900)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1350)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1230)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Tomcat logs.
任何想法?提前致谢。
更新:我用jdk1.5.0_16编译的类,并为Tomcat。我还将servlet.jar
文件包含到该项目中,这可能是问题的原因吗?
你运行的是哪个版本的Tomcat? – 2010-11-03 15:43:34
我使用的是tomcat-5.0.19的amm,能否导致Tomcat的版本导致这样的问题? – hind 2010-11-04 10:14:01
嘿,伙计们,问题现在已经解决了,原因是JDK的版本,我使用jdk1.5.0_16,但是当我用jdk1.6.0_21替换它时,问题就解决了,servlet工作得很好。 – hind 2010-11-04 13:28:04