解决 Tomcat 报错 java.lang.IllegalArgumentException: Invalid character found in method name.

 Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.
 java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens
	at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:414)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:294)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:770)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
	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)

1. 原因

随着 Tomcat 版本的升高, 会检验 URL, 当浏览器访问 URL 时, 若其中带有特殊字符, 如花括号冒号点等等.

2. 解决

2.1 添加配置 (推荐)

在 conf/catalina.properties 中添加下面内容.

tomcat.util.http.parser.HttpParser.requestTargetAllow=|{
    
    }
org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true

在 conf/server.xml 中的 <Connector> 节点中, 添加 2 个属性:

relaxedPathChars="|{}[],"
relaxedQueryChars="|{}[],"

重启 Tomcat.

2.2 其他方法

1. 去除 URL 中的特殊字符.
2. 使用 Post 方法提交数据.
3. 降低 Tomcat 版本规避此问题.