Tomcat7 The valid characters are defined in RFC 7230 and RFC 3986

信息: 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.InternalInputBuffer.parseRequestLine(InternalInputBuffer.java:194)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1108)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:654)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:317)
	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)

解决：

1. Tomcat版本：

• 在server.xml配置端口处添加如下：
  
• 在catalina.properties最底部添加如下：

org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true
org.apache.catalina.connector.CoyoteAdapter.ALLOW_BACKSLASH=true
tomcat.util.http.parser.HttpParser.requestTargetAllow=|[]

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2. 若是SpringBoot自带的Tomcat，按如下操作：

@Bean
    public TomcatServletWebServerFactory webServerFactory() {
        TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
        factory.addConnectorCustomizers(new TomcatConnectorCustomizer() {
            @Override
            public void customize(Connector connector) {
                connector.setProperty("relaxedPathChars", "\"<>[\\]^`{|}");
                connector.setProperty("relaxedQueryChars", "\"<>[\\]^`{|}");
            }
        });
        return factory;
    }
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