求助！Tomcat7提示： Error parsing HTTP request header

面板搭建的是nginx1.18+Tomcat7，查看日志后发现经常提示以下错误：

1. Sep 23, 2020 6:39:37 AM org.apache.coyote.http11.AbstractHttp11Processor process
   
2. INFO: Error parsing HTTP request header
   
3. Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.
   
4. java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986
   
5.         at org.apache.coyote.http11.InternalInputBuffer.parseRequestLine(InternalInputBuffer.java:206)
   
6.         at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1108)
   
7.         at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:654)
   
8.         at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:317)
   
9.         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
   
10.         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    
11.         at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    
12.         at java.lang.Thread.run(Thread.java:745)

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百度过原因，尝试过在配置文件增加：

1. maxHttpHeaderSize="8999"

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也在catalina.properties文件夹下增加以下配置：

1. tomcat.util.http.parser.HttpParser.requestTargetAllow=|{}
   
2. org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true

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都仍然提示该错误，请问各位大神，有什么根治的办法？

有大神解答下吗？急~