tomcat8中URI不支持{}|等特殊字符解決方案

1. 問題描述

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.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:472) ~[tomcat-embed-core-8.5.15.jar!/:8.5.15]
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:683) ~[tomcat-embed-core-8.5.15.jar!/:8.5.15]
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.15.jar!/:8.5.15]
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-8.5.15.jar!/:8.5.15]
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455) [tomcat-embed-core-8.5.15.jar!/:8.5.15]
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.15.jar!/:8.5.15]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131]
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.15.jar!/:8.5.15]
        at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]

2. 原因

由於tomcat 新版本 增加一個特性: 嚴格按照RFT 3986規範定義了Url

3. 解決方案

a. 降低tomcat的版本
b. 採用最新tomcat版本。對請求鏈接進行編碼，並修改對應的過濾器，對所有請求鏈接進行編碼解析處理。
b. catalina.properties中增加tomcat.util.http.parser.HttpParser.requestTargetAllow=|{}

4. Spring Boot 內嵌tomcat的個人解決方案

在SpringBootApplication的的main方法中增加

 System.setProperty("tomcat.util.http.parser.HttpParser.requestTargetAllow","|{}");

備註: 該方案能解決部分支持|{},對其他特殊字符沒法支持

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