如何修复“HTTP11NIOProtocol：读取请求时出错，已忽略”

Question

在使用SSL的azure kubernetes服务上运行时，我的spring-boot应用程序在tomcat服务器中使用NPE启动后失败。

首先，什么能成功工作：我用Spring Initializr创建了一个最小的Spring-boot应用程序：

null

我想将它与azure Cloud上的kubernetes集群一起使用。为此，我有一个Azure Kubernetes服务(AKS)。我使用jib构建docker映像。到目前为止，一切正常。我可以将我的docker映像部署到azure docker注册表中，启动一个kubernetes集群（有一个节点），然后调用“http：//public-ip:8443/hello”后得到我的“Hello世界”。我使用端口8443，但使用普通http来确保这个端口不是我的问题的根源。

我希望我的应用程序支持HTTPS，因此我用keytool制作了一个自签名证书（就像这里描述的：在Spring Boot2.0中启用HTTPS with self-signed certificate）。这在localhost上运行良好。它也可以在运行在localhost上的minikube内部工作。但是当我在AKS上使用docker映像时，我的应用程序在启动后几秒钟就失败了。

我已激活

logging.level.org.apache.tomcat=DEBUG
logging.level.org.apache.catalina=DEBUG

2019-09-19 08:22:51.291  INFO 1 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 9.623 seconds (JVM running for 10.419)
2019-09-19 08:22:53.775 DEBUG 1 --- [o-8443-Acceptor] o.apache.tomcat.util.threads.LimitLatch  : Counting up[https-jsse-nio-8443-Acceptor] latch=1
2019-09-19 08:22:58.764 DEBUG 1 --- [o-8443-Acceptor] o.apache.tomcat.util.threads.LimitLatch  : Counting up[https-jsse-nio-8443-Acceptor] latch=2
2019-09-19 08:22:58.793 DEBUG 1 --- [nio-8443-exec-1] org.apache.tomcat.util.modeler.Registry  : Managed= Tomcat:type=RequestProcessor,worker="https-jsse-nio-8443",name=HttpRequest1
2019-09-19 08:22:58.793 DEBUG 1 --- [nio-8443-exec-1] org.apache.tomcat.util.modeler.Registry  : Looking for descriptor 
2019-09-19 08:22:58.793 DEBUG 1 --- [nio-8443-exec-1] org.apache.tomcat.util.modeler.Registry  : Introspecting 
2019-09-19 08:22:58.793 DEBUG 1 --- [nio-8443-exec-1] m.m.MbeansDescriptorsIntrospectionSource : Introspected attribute virtualHost public java.lang.String org.apache.coyote.RequestInfo.getVirtualHost() null
<snipped 20 lines of "Introspected attribute xyz">
2019-09-19 08:22:58.796 DEBUG 1 --- [nio-8443-exec-1] m.m.MbeansDescriptorsIntrospectionSource : Introspected attribute lastRequestProcessingTime public long org.apache.coyote.RequestInfo.getLastRequestProcessingTime() public void org.apache.coyote.RequestInfo.setLastRequestProcessingTime(long)
2019-09-19 08:22:58.796 DEBUG 1 --- [nio-8443-exec-1] m.m.MbeansDescriptorsIntrospectionSource : Introspected attribute errorCount public int org.apache.coyote.RequestInfo.getErrorCount() public void org.apache.coyote.RequestInfo.setErrorCount(int)
2019-09-19 08:22:58.796 DEBUG 1 --- [nio-8443-exec-1] m.m.MbeansDescriptorsIntrospectionSource : Setting name: org.apache.coyote.RequestInfo
2019-09-19 08:22:58.797 DEBUG 1 --- [nio-8443-exec-1] o.a.tomcat.util.modeler.BaseModelMBean   : preRegister org.apache.coyote.RequestInfo@21c6ab25 Tomcat:type=RequestProcessor,worker="https-jsse-nio-8443",name=HttpRequest1
2019-09-19 08:22:58.797 ERROR 1 --- [nio-8443-exec-1] o.a.coyote.http11.Http11NioProtocol      : Error reading request, ignored

java.lang.NullPointerException: null
    at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.getSslSupport(NioEndpoint.java:1392) ~[tomcat-embed-core-9.0.24.jar:9.0.24]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853) ~[tomcat-embed-core-9.0.24.jar:9.0.24]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1593) ~[tomcat-embed-core-9.0.24.jar:9.0.24]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.24.jar:9.0.24]
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.24.jar:9.0.24]
    at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

Answer 1

这是Apache Tomcat 9.0.24中的一个已知错误。它通过向启用TLS的连接器发送纯文本来触发。忽略它是安全的，但由于它相当嘈杂，您可能想要升级到最近发布的9.0.26版本，该版本已经解决了这一问题。