我在阿里云上搭建了一套java运行环境 我吧项目放到tomcat里面启动之后出现这个报错什么情况

Nov 28, 2018 12:47:41 AM org.apache.coyote.http11.AbstractHttp11Processor process
INFO: 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.InternalInputBuffer.parseRequestLine(InternalInputBuffer.java:140)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1050)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

Nov 28, 2018 5:25:53 AM org.apache.coyote.ajp.AjpMessage processHeader
SEVERE: Invalid message received with signature 5635
Nov 28, 2018 9:48:03 AM org.apache.coyote.http11.AbstractHttp11Processor process
INFO: 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.InternalInputBuffer.parseRequestLine(InternalInputBuffer.java:140)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1050)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

按照网上说的我在server。xml上面设置了maxHttpHeaderSize="” 但是还是不行 之后我吧tomcat重装了一遍重新打包了
下项目之后就可以访问了

原因是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 connectionTimeout="20000" maxHttpHeaderSize="8999" port="8080" protocol="HTTP/1.1" redirectPort="8443"

Tomcat的header缓冲区大小不够,在server.xml中增加maxHttpHeaderSize字段

 <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"/>