java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:417) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:667) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437) 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)
原因：
部署项目中返回头部信息过大造成的。tomcat8 给的默认值满足不了我返回头部的长度，给适当的长度就可以了
解决：
需要在tomcat的server.xml中配置：maxHttpHeaderSize="8192"
<Connector port="8080" protocol="HTTP/1.1" maxHttpHeaderSize="8192" connectionTimeout="30000" maxThreads="200" maxSpareThreads="100" redirectPort="443" URIEncoding="UTF-8" />
