我是靠谱客的博主 清秀奇迹，最近开发中收集的这篇文章主要介绍SpringBoot：Invalid character found in method name. HTTP method names must be tokens，觉得挺不错的，现在分享给大家，希望可以做个参考。
概述
问题背景
关于SpringBoot应用挂了很久之后，会发生Invalid character found in method name. HTTP method names must be tokens的问题。
java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens
at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:426) ~[tomcat-embed-core-8.5.29.jar:8.5.29]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:687) ~[tomcat-embed-core-8.5.29.jar:8.5.29]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.29.jar:8.5.29]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) [tomcat-embed-core-8.5.29.jar:8.5.29]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) [tomcat-embed-core-8.5.29.jar:8.5.29]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.29.jar:8.5.29]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) [na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [na:na]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.29.jar:8.5.29]
at java.base/java.lang.Thread.run(Thread.java:844) [na:na]
网上方案
据说是tomcat 的设置问题，如果出现相关情况，可以设置一下application.yml文件的tomcat下的max-http-header-size即可。
server:
port: 5555
servlet:
context-path: /xxxx
tomcat:
remote-ip-header: x-forward-for
uri-encoding: UTF-8
max-threads: 1000
max-http-header-size: 8096
实际情况
发现是正常的http请求，发送为https请求。
例如正常路径为http://localhost:8080/xxxx，现在变成请求https://localhost:8080/xxxx就会报错。(似乎跟项目没有什么关系).
猜测
可能是tomcat8.5的keepalive有关,检测自己http协议的时候顺便检测了自己的https协议,有很多人遇到半夜报错或者隔了一段时间报错,目前这个bug没搜索到很多定论,可以尝试加tomcat的connection-timeout
parseRequestLine
报错的地方代码如下
org.apache.coyote.http11.Http11InputBuffer.parseRequestLine
/**
* Read the request line. This function is meant to be used during the
* HTTP request header parsing. Do NOT attempt to read the request body
* using it.
*
* @throws IOException If an exception occurs during the underlying socket
* read operations, or if the given buffer is not big enough to accommodate
* the whole line.
* @return true if data is properly fed; false if no data is available
* immediately and thread should be freed
*/
boolean parseRequestLine(boolean keptAlive) throws IOException {
// check state
if (!parsingRequestLine) {
return true;
}
//
// Skipping blank lines
//
if (parsingRequestLinePhase < 2) {
byte chr = 0;
do {
// Read new bytes if needed
if (byteBuffer.position() >= byteBuffer.limit()) {
if (keptAlive) {
// Haven't read any request data yet so use the keep-alive
// timeout.
wrapper.setReadTimeout(wrapper.getEndpoint().getKeepAliveTimeout());
}
if (!fill(false)) {
// A read is pending, so no longer in initial state
parsingRequestLinePhase = 1;
return false;
}
// At least one byte of the request has been received.
// Switch to the socket timeout.
wrapper.setReadTimeout(wrapper.getEndpoint().getConnectionTimeout());
}
if (!keptAlive && byteBuffer.position() == 0 && byteBuffer.limit() >= CLIENT_PREFACE_START.length - 1) {
boolean prefaceMatch = true;
for (int i = 0; i < CLIENT_PREFACE_START.length && prefaceMatch; i++) {
if (CLIENT_PREFACE_START[i] != byteBuffer.get(i)) {
prefaceMatch = false;
}
}
if (prefaceMatch) {
// HTTP/2 preface matched
parsingRequestLinePhase = -1;
return false;
}
}
// Set the start time once we start reading data (even if it is
// just skipping blank lines)
if (request.getStartTime() < 0) {
request.setStartTime(System.currentTimeMillis());
}
chr = byteBuffer.get();
} while ((chr == Constants.CR) || (chr == Constants.LF));
byteBuffer.position(byteBuffer.position() - 1);
parsingRequestLineStart = byteBuffer.position();
parsingRequestLinePhase = 2;
if (log.isDebugEnabled()) {
log.debug("Received [" + new String(byteBuffer.array(), byteBuffer.position(), byteBuffer.remaining(),
StandardCharsets.ISO_8859_1) + "]");
}
}
if (parsingRequestLinePhase == 2) {
//
// Reading the method name
// Method name is a token
//
boolean space = false;
while (!space) {
// Read new bytes if needed
if (byteBuffer.position() >= byteBuffer.limit()) {
if (!fill(false)) // request line parsing
return false;
}
// Spec says method name is a token followed by a single SP but
// also be tolerant of multiple SP and/or HT.
int pos = byteBuffer.position();
byte chr = byteBuffer.get();
if (chr == Constants.SP || chr == Constants.HT) {
space = true;
request.method().setBytes(byteBuffer.array(), parsingRequestLineStart,
pos - parsingRequestLineStart);
} else if (!HttpParser.isToken(chr)) {
byteBuffer.position(byteBuffer.position() - 1);
throw new IllegalArgumentException(sm.getString("iib.invalidmethod"));
}
}
parsingRequestLinePhase = 3;
}
if (parsingRequestLinePhase == 3) {
// Spec says single SP but also be tolerant of multiple SP and/or HT
boolean space = true;
while (space) {
// Read new bytes if needed
if (byteBuffer.position() >= byteBuffer.limit()) {
if (!fill(false)) // request line parsing
return false;
}
byte chr = byteBuffer.get();
if (!(chr == Constants.SP || chr == Constants.HT)) {
space = false;
byteBuffer.position(byteBuffer.position() - 1);
}
}
parsingRequestLineStart = byteBuffer.position();
parsingRequestLinePhase = 4;
}
if (parsingRequestLinePhase == 4) {
// Mark the current buffer position
int end = 0;
//
// Reading the URI
//
boolean space = false;
while (!space) {
// Read new bytes if needed
if (byteBuffer.position() >= byteBuffer.limit()) {
if (!fill(false)) // request line parsing
return false;
}
int pos = byteBuffer.position();
byte chr = byteBuffer.get();
if (chr == Constants.SP || chr == Constants.HT) {
space = true;
end = pos;
} else if (chr == Constants.CR || chr == Constants.LF) {
// HTTP/0.9 style request
parsingRequestLineEol = true;
space = true;
end = pos;
} else if (chr == Constants.QUESTION && parsingRequestLineQPos == -1) {
parsingRequestLineQPos = pos;
} else if (HttpParser.isNotRequestTarget(chr)) {
throw new IllegalArgumentException(sm.getString("iib.invalidRequestTarget"));
}
}
if (parsingRequestLineQPos >= 0) {
request.queryString().setBytes(byteBuffer.array(), parsingRequestLineQPos + 1,
end - parsingRequestLineQPos - 1);
request.requestURI().setBytes(byteBuffer.array(), parsingRequestLineStart,
parsingRequestLineQPos - parsingRequestLineStart);
} else {
request.requestURI().setBytes(byteBuffer.array(), parsingRequestLineStart,
end - parsingRequestLineStart);
}
parsingRequestLinePhase = 5;
}
if (parsingRequestLinePhase == 5) {
// Spec says single SP but also be tolerant of multiple and/or HT
boolean space = true;
while (space) {
// Read new bytes if needed
if (byteBuffer.position() >= byteBuffer.limit()) {
if (!fill(false)) // request line parsing
return false;
}
byte chr = byteBuffer.get();
if (!(chr == Constants.SP || chr == Constants.HT)) {
space = false;
byteBuffer.position(byteBuffer.position() - 1);
}
}
parsingRequestLineStart = byteBuffer.position();
parsingRequestLinePhase = 6;
// Mark the current buffer position
end = 0;
}
if (parsingRequestLinePhase == 6) {
//
// Reading the protocol
// Protocol is always "HTTP/" DIGIT "." DIGIT
//
while (!parsingRequestLineEol) {
// Read new bytes if needed
if (byteBuffer.position() >= byteBuffer.limit()) {
if (!fill(false)) // request line parsing
return false;
}
int pos = byteBuffer.position();
byte chr = byteBuffer.get();
if (chr == Constants.CR) {
end = pos;
} else if (chr == Constants.LF) {
if (end == 0) {
end = pos;
}
parsingRequestLineEol = true;
} else if (!HttpParser.isHttpProtocol(chr)) {
throw new IllegalArgumentException(sm.getString("iib.invalidHttpProtocol"));
}
}
if ((end - parsingRequestLineStart) > 0) {
request.protocol().setBytes(byteBuffer.array(), parsingRequestLineStart, end - parsingRequestLineStart);
} else {
request.protocol().setString("");
}
parsingRequestLine = false;
parsingRequestLinePhase = 0;
parsingRequestLineEol = false;
parsingRequestLineStart = 0;
return true;
}
throw new IllegalStateException("Invalid request line parse phase:" + parsingRequestLinePhase);
}
最后
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