【踩坑日志】springboot项目启动localhost 发送了无效的响应

```log
java.lang.IllegalArgumentException: Invalid character found in method name [0x160x030x010x020x000x010x000x010xfc0x030x03Ef0x1a0xcb0xa7@0xe9o0x850xfe,c0x1f;0x800xfcI0xe8q0xfe0xb20xa900xd1#&0x1f0xd20xdc0x1f0x920x17 ]. HTTP method names must be tokens
	at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:419) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:271) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.63.jar:9.0.63]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) [tomcat-embed-core-9.0.63.jar:9.0.63]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743) [tomcat-embed-core-9.0.63.jar:9.0.63]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.63.jar:9.0.63]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) [tomcat-embed-core-9.0.63.jar:9.0.63]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) [tomcat-embed-core-9.0.63.jar:9.0.63]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.63.jar:9.0.63]
	at java.lang.Thread.run(Thread.java:750) [na:1.8.0_321]
```

在初学springboot时刚启动springboot想要测试是否成功。

之后打开[http://localhost:8080/backend/index.html](http://localhost:8080/backend/index.html)后报错了。

在查找错误中得知， **这个异常的意思就是在方法中有非法的参数** ，最后找到问题出在请求上。果然，再ajax请求地址写的是 https，可是我并没有加密，是无法用https协议的，**将https改为http即可**。

最后修改：2022 年 11 月 19 日