java - Tomcat 7 停止接收 HTTP 请求

Question

我有一个 Tomcat 7 服务器，它接收大量 GET 请求。这在一段时间内效果很好，然后突然停止工作(7-8 小时后)。

当它停止工作时，我收到此错误:

mai 06, 2015 12:47:58 AM org.apache.coyote.http11.AbstractHttp11Processor process INFO: Error parsing HTTP request header Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.

在此之后的所有其他错误，都是一样的。我试图停止获取请求，但无论如何它都会在一段时间后崩溃。你有什么想法吗？

这是崩溃前的样子:

[06/May/2015:10:47:11 +0200] "GET /ListenerServlet?request=getLastChanged&_=1430852558104 HTTP/1.1" 200 32

崩溃后:

[06/May/2015:10:47:14 +0200] "GET /ListenerServlet?request=getLastChanged&_=1430902035081 HTTP/1.1" 500 1674

崩溃后，Servlet 无法获取请求参数.. 抛出此空指针:

SEVERE: Servlet.service() for servlet [RoomServlet] in context with path [] threw exception java.lang.NullPointerException
        at factory.Factory.initEditMode(Factory.java:37)
        at factory.Factory.init(Factory.java:20)
        at factory.TabsFactory.<init>(TabsFactory.java:19)
        at servlet.RoomServlet.getTabs(RoomServlet.java:285)
        at servlet.RoomServlet.doGet(RoomServlet.java:46)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

其次是:

mai 07, 2015 9:58:00 AM org.apache.catalina.core.StandardContext listenerStop
SEVERE: Exception sending context destroyed event to listener instance of class websocket.drawboard.DrawboardContextListener
java.lang.NoClassDefFoundError: javax/websocket/Endpoint
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2944)
        at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1208)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1688)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
        at websocket.drawboard.DrawboardContextListener.contextDestroyed(DrawboardContextListener.java:32)
        at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:5014)
        at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5659)
        at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
        at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1575)
        at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1564)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: javax.websocket.Endpoint
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
        ... 17 more

如果还有什么需要补充的，请告诉我!非常感谢。

编辑:今天是个好日子，我遇到了一个新错误!这可能与 JDBC 有关系……

The last packet successfully received from the server was 33 921 291 milliseconds ago. The last packet sent successfully to the server was 1 milliseconds ago. No operations allowed after connection closed.

Answer 1

您可以尝试安装Apache Tomcat v7.0.53或更高。