springboot报错 [io-29001-exec-8] o.apache.coyote.http11.Http11Processor

1. springboot 项目运行一段时间报错

2019-12-08 17:11:37.116  INFO 16380 --- [io-29001-exec-8] o.apache.coyote.http11.Http11Processor   : Error parsing HTTP request header
 Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.

java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens
 at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:415) ~[tomcat-embed-core-9.0.21.jar!/:9.0.21]
 at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:294) ~[tomcat-embed-core-9.0.21.jar!/:9.0.21]
 at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.21.jar!/:9.0.21]
 at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853) [tomcat-embed-core-9.0.21.jar!/:9.0.21]
 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587) [tomcat-embed-core-9.0.21

解决方法

1. Tomcat的header缓冲区大小不够,只需要在server.xml中增加maxHttpHeaderSize字段即可:

<Connector URIEncoding="UTF-8" port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol"
useBodyEncodingForURI="false"
enableLookups="false"
               connectionTimeout="20000"

               redirectPort="8443" maxHttpHeaderSize="你想要的大小"/>

2.如果是SpringBoot项目，则需要在application.yml文件中，进行如下修改：

    server:
      port: 项目端口
      # 下面这个参数是为解决问题而新增的
      tomcat:
        max-http-header-size: 8192

可能是因为请求协议不对，需要统一成https或http请求。

非原创仅用于记录bug：原文传送门