liunx上的tomcat偶尔出现错误日志

Question

org.apache.coyote.http11.Http11Processor.service Error parsing HTTP request header
Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in method name [MGLNDD_120.78.131.158_80800x0a...]. HTTP method names must be tokens
at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:419)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:271)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:891)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1784)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:750)

org.apache.coyote.http11.Http11Processor.service Error parsing HTTP request header
Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in method name [0x160x030x010x000xca0x010x000x000xc60x030x030x89?^x70x0b.3z`0xc8#0x120xe70xbf0x9e0x0a|0xf2e0xca0x110xe10x1b0x1d0x15JF0x120x9bTw0x000x00h0xcc0x140xcc0x130xc0/0xc0+0xc000xc0,0xc00x110xc00x070xc0'0xc0#0xc00x130xc00x090xc0(0xc0$0xc00x140xc00x0a0xcc0x150x000x9e0x000x9f0x00g0x00k0x0030x0090x000x9c0x000x9d0x000x050x000x040x00<0x00=0x00/0x0050xc00x120x000x160x000x0a0x000x030x000x080x000x060x000x140x000x110x000x190x000x170x0020xc00x080x000x120x000x130x000x150x0080x00@0x00f0x00j0x000xa20x000xa30x010x000x0050x000x050x000x050x010x000x000x000x000x000x0a0x000x080x000x060x000x170x000x180x000x190x000x0b0x000x020x010x000x000x0d0x000x0c0x000x0a0x040x010x040x030x020x010x020x030x020x020xff0x010x000x010x000x000x0f0x000x010x01...]. HTTP method names must be tokens
at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:419)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:271)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:891)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1784)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:750)

Answer 1

由于HTTP请求头中包含了非法字符导致的。HTTP请求方法名必须是一个token，也就是由ASCII字符组成的字符串。

解决：检查HTTP请求头中的方法名是否合法。如果不合法，需要修改请求头中的方法名。这个错误日志出现的频率比较高，可以将日志级别调整为DEBUG，可以更详细地了解错误。