The valid characters are defined in RFC 7230and RFC 3986

高版本tomcat出现如下错误信息：

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

atorg.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.

atorg.apache.coyote.http11.Http11Processor.service(Http11Processor.

atorg.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.

atorg.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.

atorg.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.

atorg.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.

at java.util.concurrent.ThreadPoolExecutor.runWorker(UnknownSource)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(UnknownSource)

atorg.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.

at

我这里是一个以http方式访问图片的功能，因为参数中的路径有转义字符，所以报错。可能是高版本的tomcat对请求路径url要求更为严格的问题。之前用低版本的tomcat是可以的。

解决办法：将带有转义字符的参数进行url编码即可。