https://bz.apache.org/bugzilla/show_bug.cgi?id=64606

            Bug ID: 64606
           Summary: Note The full stack trace of the root cause is
                    available in the server logs.
           Product: Tomcat 9
           Version: 9.0.35
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Servlet
          Assignee: dev@tomcat.apache.org
          Reporter: 13218138...@163.com
  Target Milestone: -----

HTTP Status 400 – Bad Request

Type Exception Report

Message Invalid character found in the request target. The valid characters are
defined in RFC 7230 and RFC 3986

Description The server cannot or will not process the request due to something
that is perceived to be a client error (e.g., malformed request syntax, invalid
request message framing, or deceptive request routing).

Exception

java.lang.IllegalArgumentException: Invalid character found in the request
target. The valid characters are defined in RFC 7230 and RFC 3986
org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:489)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:260)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:748)

Note The full stack trace of the root cause is available in the server logs.

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