【发布时间】：2015-10-01 14:37:11
【问题描述】：
使用运行 Java EE 应用程序，
- GlassFish 服务器 4.1 / Java EE 7
- EclipseLink 2.6.0 具有 JPA 2.1
- Mojarra 2.3.0-m02
- PrimeFaces 5.2 最终版
- OmniFaces 2.1 最终版
- MySQL 5.6.11
- JDK 8u45
在重新部署应用程序时偶尔会抛出一个频率较低的java.lang.NullPointerException，但不会对应用程序造成任何损害。
Severe: An exception or error occurred in the container during the request processing
java.lang.NullPointerException
at org.glassfish.grizzly.http.util.HttpCodecUtils.parseHost(HttpCodecUtils.java:69)
at org.glassfish.grizzly.http.HttpRequestPacket.doParseHostHeader(HttpRequestPacket.java:723)
at org.glassfish.grizzly.http.HttpRequestPacket.parseHostHeader(HttpRequestPacket.java:717)
at org.glassfish.grizzly.http.HttpRequestPacket.serverName(HttpRequestPacket.java:283)
at org.glassfish.grizzly.http.server.Request.getServerName(Request.java:1246)
at org.apache.catalina.connector.Request.getServerName(Request.java:1882)
at org.apache.catalina.connector.RequestFacade.getServerName(RequestFacade.java:535)
at com.sun.enterprise.web.connector.coyote.PECoyoteConnector.requestEndEvent(PECoyoteConnector.java:1307)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:422)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
Warning: GRIZZLY0013: Exception during FilterChain execution
java.lang.NullPointerException
at org.glassfish.grizzly.attributes.Attribute.remove(Attribute.java:227)
at org.glassfish.grizzly.http.server.HttpServerFilter.afterService(HttpServerFilter.java:383)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:260)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
它来自哪里，为什么？我既没有这个例外背后的原因，也没有应用程序似乎对此负责。
【问题讨论】：
-
这是公共服务器吗？您是否使用 IP 和用户代理维护访问日志？您是否已经确定它更可能是人类还是机器人？该异常表明 HTTP
Host标头丢失或损坏，这很可能是由黑客探测请求以查找易受攻击的服务器引起的（因为没有一个理智的网络浏览器会导致这种情况）。 -
也不像服务器。它只是在本地计算机上运行以进行练习，而不是在生产环境中。
标签： jakarta-ee glassfish java-ee-7 glassfish-4.1