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关于服务器的个问题 弄了一天 没找出来 求救啊 各位

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查看11 | 回复1 | 2021-1-27 07:03:01 | 显示全部楼层 |阅读模式
用mysql和tomcat部署的打开页面总出现以下错误
httpstatus500-
description:Theserverencounteredaninternalerror()thatpreventeditfromfulfillingthisrequest.
javax.servlet.ServletException:Servlet.init()forservletcrthrewexception
atorg.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:907)
atorg.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:612)
atorg.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:163)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
atorg.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:954)
atorg.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:138)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
atorg.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:954)
atorg.apache.catalina.core.StandardContext.invoke(StandardContext.java:2459)
atorg.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:132)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
atorg.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:593)
atorg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:593)
atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
atorg.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:954)
atorg.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:126)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
atorg.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:954)
atorg.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
atorg.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
atorg.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
atorg.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
atorg.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
atorg.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
atjava.lang.Thread.run(Thread.java:534)

rootcause
java.lang.NullPointerException
atjava.lang.Class.forName0(NativeMethod)
atjava.lang.Class.forName(Class.java:141)
atorg.sunxin.lesson.jsp.bookstore.CreateDBServlet.init(CreateDBServlet.java:21)
atjavax.servlet.GenericServlet.init(GenericServlet.java:212)
atorg.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:879)
atorg.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:612)
atorg.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:163)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
atorg.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:954)
atorg.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:138)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
atorg.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:954)
atorg.apache.catalina.core.StandardContext.invoke(StandardContext.java:2459)
atorg.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:132)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
atorg.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:593)
atorg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:593)
atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
atorg.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:954)
atorg.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:126)
atorg.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
atorg.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:954)
atorg.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
atorg.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
atorg.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
atorg.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
atorg.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
atorg.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
atjava.lang.Thread.run(Thread.java:534)

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千问 | 2021-1-27 07:03:01 | 显示全部楼层
好像没那么简单,呵呵.
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