Error parsing HTTP request header

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报错信息：

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 the request target. The valid characters are defined in RFC 7230 and RFC 3986
at org.apache.coyote.http11.InternalInputBuffer.parseRequestLine(InternalInputBuffer.java:189)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1000)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

原因：tomcat版本问题

我的解决方法：本人装了两个tomcat,将java build path中libraries的tomcat与运行的tomcat调为同一版本的tomcat

网上其它解决方法：tomcat的header缓冲区大小不够,只需要在server.xml中增加maxHttpHeaderSize字段(未试）

<Connector URIEncoding="UTF-8" port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol"      useBodyEncodingForURI="false"      enableLookups="false"                 connectionTimeout="20000"                 redirectPort="8443" maxHttpHeaderSize="你想要的大小"/>

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