Http11Processor - Error parsing HTTP request header
Note: further occurrences of HTTP header 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:426)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:687)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
通過以下兩種方式解決：
一、Tomcat的header緩衝區大小不夠,只需要在server.xml中增加maxHttpHeaderSize字段即可:
(nginx緩存區大小是4K,tomcat是8K)
`<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"/>`
如果是SpringBoot項目，則需要在application.yml文件中，進行如下修改：
server:
port: 項目端口
# 下面這個參數是爲解決問題而新增的
tomcat:
max-http-header-size:8192
二、可能是因爲請求協議不對，需要統一成https或http請求。