tomcat运行出现500,The full stack trace of the root cause is available in the server logs

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            java入门求大神解答!!

3个回答

您好,它提示为空指针(nullpointer)引起的异常,说明你的参数可能没有传过去,由于我没有看到你的代码,不知道是具体什么参数,请检查传参方法,向上看,依次检查相关方法,看看参数停留在什么位置。图片说明
这个是我出现的问题,最终解决了,详情见博客

首先:确认本地tomcat服务,启动OK,简单就是localhost:8080这个看看能不能找到tomcat,这个应该么问题;其次就是debugger,模式下获取请求对应的
controller,断点,多打几个,万一打错地方,拦截不到尴尬。到了这一步,要么返回值有问题,要么程序有问题,其次就是可以自己研究下,因为,你问的时间,加别人回的,够你想到N多种解决办法了

500错误是你的代码出现了问题,你调用的方法中报错了出现空值图片说明UserDaoImpl类中的第55行出问题了

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jsp代码在tomcat部署提示错误500
HTTP Status 500 - type Exception report message description The server encountered an internal error that prevented it from fulfilling this request. exception java.lang.NullPointerException cn.edu.jstu.jsjxy.fbh.dao.impl.UserDaoImpl.getUserByName(UserDaoImpl.java:15) cn.edu.jstu.jsjxy.fbh.servlet.LoginServlet.doPost(LoginServlet.java:25) javax.servlet.http.HttpServlet.service(HttpServlet.java:643) javax.servlet.http.HttpServlet.service(HttpServlet.java:723) cn.edu.jstu.jsjxy.fbh.filter.AuthorityFilter.doFilter(AuthorityFilter.java:33) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.44 logs. Apache Tomcat/6.0.44
请大佬帮忙看下 Tomcat的配置哪里出问题了
``` HTTP Status 500 – Internal Server Error Type Exception Report Message Servlet.init() for servlet jsp threw exception Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception javax.servlet.ServletException: Servlet.init() for servlet jsp threw exception org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2555) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2544) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:744) Root Cause java.lang.NoClassDefFoundError: org/apache/jasper/runtime/JspFactoryImpl org.apache.jasper.servlet.JspServlet.init(JspServlet.java:118) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2555) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2544) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:744) Root Cause java.lang.ClassNotFoundException: org.apache.jasper.runtime.JspFactoryImpl java.net.URLClassLoader$1.run(URLClassLoader.java:363) java.net.URLClassLoader$1.run(URLClassLoader.java:355) java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(URLClassLoader.java:354) java.lang.ClassLoader.loadClass(ClassLoader.java:425) java.lang.ClassLoader.loadClass(ClassLoader.java:358) org.apache.jasper.servlet.JspServlet.init(JspServlet.java:118) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2555) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2544) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:744) Root Cause java.util.zip.ZipException: invalid LOC header (bad signature) java.util.zip.ZipFile.read(Native Method) java.util.zip.ZipFile.access$1400(ZipFile.java:56) java.util.zip.ZipFile$ZipFileInputStream.read(ZipFile.java:679) java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(ZipFile.java:415) java.util.zip.InflaterInputStream.read(InflaterInputStream.java:158) sun.misc.Resource.getBytes(Resource.java:124) java.net.URLClassLoader.defineClass(URLClassLoader.java:444) java.net.URLClassLoader.access$100(URLClassLoader.java:71) java.net.URLClassLoader$1.run(URLClassLoader.java:361) java.net.URLClassLoader$1.run(URLClassLoader.java:355) java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(URLClassLoader.java:354) java.lang.ClassLoader.loadClass(ClassLoader.java:425) java.lang.ClassLoader.loadClass(ClassLoader.java:358) org.apache.jasper.servlet.JspServlet.init(JspServlet.java:118) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2555) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2544) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:744) Note The full stack trace of the root cause is available in the server logs. Apache Tomcat/7.0.91 ```
执行页面出现 HTTP Status 500
description The server encountered an internal error that prevented it from fulfilling this request. exception java.lang.NullPointerException com.dao.BooksDao.selBookByPage(BooksDao.java:30) com.servlet.IndexServlet.doPost(IndexServlet.java:70) com.servlet.IndexServlet.doGet(IndexServlet.java:25) 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) com.filter.EncodeFilter.doFilter(EncodeFilter.java:24) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.57 logs. 错误页面出现这个情况,怎么解决呢 求大神们帮助
求解答:MyEclipse启动tomcat时出现错误,求解答?
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HTTP Status 500 – Internal Server Error – The server encountered an unexpected condition
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tomcat 500错误,刷新几次就可以了,再刷新又出现500错误
tomcat 500错误,刷新几次就可以了,再刷新又出现500错误,好像运行我的jsp文件都是抱500错误,刷新几次就可以了,再刷新又出现500错误。 上网找了很多关于500错误的还是没有解决问题,求大神帮下忙,拜托了! HTTP Status 500 – Internal Server Error Type Exception Report Message org.apache.jasper.JasperException: Unable to compile class for JSP Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception org.apache.jasper.JasperException: org.apache.jasper.JasperException: Unable to compile class for JSP org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:598) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:422) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) Root Cause org.apache.jasper.JasperException: Unable to compile class for JSP org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:610) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) Root Cause java.io.IOException: classFile.delete() failed org.apache.jasper.compiler.SmapUtil$SDEInstaller.install(SmapUtil.java:201) org.apache.jasper.compiler.SmapUtil.installSmap(SmapUtil.java:163) org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:510) org.apache.jasper.compiler.Compiler.compile(Compiler.java:378) org.apache.jasper.compiler.Compiler.compile(Compiler.java:350) org.apache.jasper.compiler.Compiler.compile(Compiler.java:334) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:595) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) Note The full stack trace of the root cause is available in the server logs. Apache Tomcat/8.5.35
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