1. postman v8.5版本 以上支持 websocket。

2. 选择websocket请求模块

File - New...

3. 输入请求地址, ws://

 

 

 

控制台输出:

2023-09-12 15:29:23.039  INFO 11592 --- [nio-8080-exec-2] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2023-09-12 15:29:23.039  INFO 11592 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2023-09-12 15:29:23.040  INFO 11592 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed initialization in 1 ms
新的窗口101已连接！当前在线人数为1

postman v8.5.1版本下载

链接: https://pan.baidu.com/s/1CaXKkIFLyluLJd3KNdSlaw 
提取码: dhj5