已解决：Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986 问题

请求：

http://127.0.0.1:8080/driverApp/findLikeAddress?json={"shopname":"广东省","uid":1001}

控制台报错：

04-Aug-2020 12:03:09.642 信息 [http-nio-8080-exec-8] org.apache.coyote.http11.Http11Processor.service 解析 HTTP 请求 header 错误
 Note: further occurrences of HTTP request 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.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:483)
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:502)
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1623)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.lang.Thread.run(Thread.java:748)

 

问题：Tomcat抛出异常，导致400 –错误请求。

从7.0.88开始，大多数tomcat版本都会出现此问题。

解决方案：（由Apache团队建议）：

Tomcat增强了其安全性，并且不再允许在查询字符串中使用原始方括号。在请求中，我们有{，} 或其他符号，因此服务器未处理该请求。

在tomcat conf路径下的server.xml文件里面的 Connector 标签下添加属性 relaxedQueryChars：

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443"
               maxHttpHeaderSize ="10240"
               relaxedQueryChars="{,}"/>

如果应用程序需要默认情况下tomcat不支持的更多特殊字符，请在relaxedQueryChars上述属性中添加这些特殊字符，并以逗号分隔。