帮助文档中的资料https://help.fanruan.com/finereport/doc-view-3633.html?source=4

实际操作出现的问题

HTTP Status 400 – 错误的请求

Type 异常报告

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

描述 由于被认为是客户端对错误（例如：畸形的请求语法、无效的请求信息帧或者虚拟的请求路由），服务器无法或不会处理当前请求。

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:483)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:502)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1623)
	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)

):注意 主要问题的全部 stack 信息可以在 server logs 里查看

Apache Tomcat/8.5.51