HTTP Status 400 – Bad Request

Type Exception Report

Message Invalid character found in the request target [/<span%20style='color:red'>[freemarker%e6%a0%87%e7%ad%be%e5%bc%82%e5%b8%b8%ef%bc%8c%e8%af%b7%e8%81%94%e7%b3%bb%e7%bd%91%e7%ab%99%e7%ae%a1%e7%90%86%e5%91%98]</span> ]. 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 [/<span%20style='color:red'>[freemarker%e6%a0%87%e7%ad%be%e5%bc%82%e5%b8%b8%ef%bc%8c%e8%af%b7%e8%81%94%e7%b3%bb%e7%bd%91%e7%ab%99%e7%ae%a1%e7%90%86%e5%91%98]</span> ]. The valid characters are defined in RFC 7230 and RFC 3986
	org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:490)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:269)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:937)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190)
	org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
	java.base/java.lang.Thread.run(Thread.java:1583)

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

Apache Tomcat/9.0.98