轉(zhuǎn)載：（http://blog.csdn.net/zeroso/article/details/70592179）

錯(cuò)誤現(xiàn)象：

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(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

最近部署項(xiàng)目的時(shí)候，由于MIS配置的是Tomcat 8.5的服務(wù)端，導(dǎo)致Web應(yīng)用不正常，報(bào)HTTP 400錯(cuò)誤（Chrome無異常、IE報(bào)錯(cuò)）。問題原因初步判斷為8.5版本的服務(wù)端接收請(qǐng)求不會(huì)對(duì)符號(hào)進(jìn)行轉(zhuǎn)義，Chrome不異常的原因或許是瀏覽器自身轉(zhuǎn)義了。具體錯(cuò)誤信息如下：

---

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 3986at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:472)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:683)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:745)

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java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986

查閱了大量資料后，有兩種解決方案：

Plan 1：?
更換低版本的Tomcat來規(guī)避這種問題。

Plan 2：?
在conf/catalina.properties中最后添加一行：

org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true

重啟服務(wù)器后，解決問題。

官方指南地址：http://tomcat.apache.org/tomcat-8.5-doc/config/systemprops.html

官方說明：

org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH

If this is true ‘%2F’ and ‘%5C’ will be permitted as path.delimiters.If not specified, the default value of false will be used.

總結(jié)

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