java 在方法名称中发现无效字符。HTTP 方法必须是令牌
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Invalid character found in method name. HTTP method must be tokens
提问by Kiith Nabaal
Edit: I no longer work at this place, and we switched to node.js anyway, so I cannot verify if anyone's answers are correct. Please vote to close (just need one more).
编辑：我不再在这个地方工作，无论如何我们切换到 node.js，所以我无法验证是否有人的答案是正确的。请投票关闭（只需要一个）。
This is not a duplicate of the other questions (or at least the ones I came across) because I don't use SSL/HTTPS anywhere in my code. I was also able to confirm that these errors are coming from my system and not an outside source (like a bot). If it is something simple then I apologize, I only started using Spring Boot a few months ago.
这不是其他问题（或者至少是我遇到的问题）的重复，因为我没有在代码中的任何地方使用 SSL/HTTPS。我还能够确认这些错误来自我的系统而不是外部来源（如机器人）。如果这很简单，那么我很抱歉，我几个月前才开始使用 Spring Boot。
I am developing an internet of things system where I send a Raspberry Pi Zero W out into the field with sensors. The Raspberry Pi gets sensor data via Bluetooth LE, and HTTP POSTS the data to a Spring Boot server (which is hosted on an AWS EC2 instance). Strangely, the server gets data perfectly fine for a while (in this case, 3 weeks), and then out of nowhere I started getting this exception from Spring/Tomcat:
我正在开发一个物联网系统，我将一个 Raspberry Pi Zero W 发送到带有传感器的现场。Raspberry Pi 通过蓝牙 LE 获取传感器数据，然后 HTTP 将数据发布到 Spring Boot 服务器（托管在 AWS EC2 实例上）。奇怪的是，服务器在一段时间内（在本例中为 3 周）获取的数据完全正常，然后我突然开始从 Spring/Tomcat 获取此异常：
2017-06-03 06:17:07.508 INFO 19927 --- [p-nio-80-exec-8]o.apache.coyote.http11.Http11Processor : Error parsing HTTP request headerNote: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
2017-06-03 06:17:07.508 INFO 19927 --- [p-nio-80-exec-8]o.apache.coyote.http11.Http11Processor : Error parsing HTTP request headerNote: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokensatorg.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:421) ~[tomcat-embed-core-8.5.11.jar!/:8.5.11] (rest of the stack trace)
java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokensatorg.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:421) ~[tomcat-embed-core-8.5.11.jar!/:8.5.11] (rest of the stack trace)
As I mentioned above, I am not using HTTPS in either Spring Boot or the Raspberry Pi. Since the Raspberry Pi is being deployed to a remote location, I am not changing the code.
正如我上面提到的，我没有在 Spring Boot 或 Raspberry Pi 中使用 HTTPS。由于 Raspberry Pi 被部署到远程位置，因此我不会更改代码。
The program running on the Raspberry Pi is written in Python, and I use the requests.postmethod to send the data to the server.
树莓requests.post派上运行的程序是用Python编写的，我用这个方法将数据发送到服务器。
I noticed this behavior in an earlier deployment of the system as well, which used an Android device to send the data instead. So I don't think there is anything wrong with the clients...
我在系统的早期部署中也注意到了这种行为，它使用 Android 设备来发送数据。所以我不认为客户有什么问题......
I have tested the server quite a bit, especially when I add new features, and I never got this error before (except in the previous deployment). Once this error occurs, it seems like it just continues to happen (I lost 3 sensor readings in a row, all at different days/times).
我已经对服务器进行了相当多的测试，特别是当我添加新功能时，我以前从未遇到过这个错误（除了在之前的部署中）。一旦发生此错误，它似乎只会继续发生（我连续丢失 3 个传感器读数，均在不同的日期/时间）。
Is data getting corrupted as it leaves the Raspberry Pi? Does requests.posthave some odd behavior I am unaware of? Does the code I write using Spring affect Tomcat somehow? I have no idea why this is happening and all of the other answers I came across say its usually because of an HTTPS to HTTP connection. My application.properties file only has server.port=80
数据在离开 Raspberry Pi 时是否会损坏？是否requests.post有一些我不知道的奇怪行为？我使用 Spring 编写的代码是否会以某种方式影响 Tomcat？我不知道为什么会发生这种情况，我遇到的所有其他答案都说这通常是因为 HTTPS 到 HTTP 连接。我的 application.properties 文件只有 server.port=80
Thank you very much for any help!
非常感谢您的帮助！
回答by Siraj K
I had a similar issue and adding
我有一个类似的问题并添加
<dependency>
<groupId>com.fasterxml.Hymanson.core</groupId>
<artifactId>Hymanson-databind</artifactId>
<version>2.6.3</version>
</dependency>
fixed the issue for me.
为我解决了这个问题。
回答by u10925557
#Increase header buffer size
#server.tomact.max-http-header-size: 8192 this is lose efficacy
server.max-http-header-size=15360
