when spring boot startup,throw out the "method names must be tokens" exception
JavaSpringJava Problem Overview
When spring boot startup,throw out the method names must be tokens
exception
2016-08-11 16:53:54.499 INFO 14212 --- [0.1-8888-exec-1] o.apache.coyote.http11.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:462) ~[tomcat-embed-core-8.5.4.jar!/:8.5.4]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:994) ~[tomcat-embed-core-8.5.4.jar!/:8.5.4]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.4.jar!/:8.5.4]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785) [tomcat-embed-core-8.5.4.jar!/:8.5.4]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1425) [tomcat-embed-core-8.5.4.jar!/:8.5.4]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.4.jar!/:8.5.4]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_72]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_72]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.4.jar!/:8.5.4]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_72]
2016-08-11 16:53:58.885 INFO 14212 --- [0.1-8888-exec-2] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2016-08-11 16:53:58.888 INFO 14212 --- [0.1-8888-exec-2] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2016-08-11 16:53:58.922 INFO 14212 --- [0.1-8888-exec-2] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 30 ms
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Who know why throw out Invalid character found in method name. HTTP method names must be tokens
exception.
Java Solutions
Solution 1 - Java
This exception can occur when you try to execute https request from client on endpoint which isn't https enabled. Client will encrypt request data when server is expecting raw data.
Change https:// to http:// in your client url.
Solution 2 - Java
Another Case: SpringBoot and Tomcat use port 8080 or 8888 by default. I had a Jupyter Notebook running at the same time which has a token in it's url path and some random characters. Anyway: The Notebook was still trying to make requests when the jupyter notebook server was down.
If you encounter this error: Check if you have another Application running that is either spawning a webserver or talking to a webserver on such ports.
Solution 3 - Java
The same problem.
cmd -> netstat -ano then find the port your have used(e.g 8888)
I find a process try send package not Http request to my 8888 port, so the tomcat throw the method names must be tokens
Exception.
you can:
-
change server port;
-
find the process and kill it;
Solution 4 - Java
In my case it was when Tomcat created HTTPS request without SSL certificate installed on it. To fix it I changed schema in request to HTTP. Or you should create SSL certificate to use HTTPS.