IllegalArgumentException: Invalid character found in method name HTTP method names must be tokens

  最近，做項目的時候遇到如下異常：

java.lang.IllegalArgumentException: Invalid character found in method name [0x160x010x010x00-0x010x000x00)0x010x01`0x950xe9#0x13:0xc2v^0xa6D-0xa5_0xf30xd00xa59]. HTTP method names must be tokens
	at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:417) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:261) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	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-9.0.45.jar:9.0.45]
	at java.base/java.lang.Thread.run(Thread.java:835) ~[na:na]
           

  常導緻該異常的因素有倆：

• tomcat預設http header cache配置太小，我們隻需要配置檔案裡面指定tomcat的maxHttpHeaderSize新的配置（在配置檔案中将對應配置改大一些就ok啦）
• https通路http協定導緻出現的異常