"BindException: Address already in use" after an application is quited

Question

I am learning to code microservices in VertX on my new MacBook, and here is the issue:

1. I wrote some code, which builds http server at localhost, port 8080, and named it MyMicroservice.
2. I ran it (succesfully) with command java -jar MyMicroservice.
3. I quit it using ctrl+z.
4. I try to run it again, in the same way - and I get: [INFO] SEVERE: java.net.BindException: Address already in use

How to avoid it? I can handle it with restarting my computer, but I believe there are is some faster approach?

Answer 1

On Windows, to find and kill the process that is listening to a specified port (often 8080)

1. Open the Command Prompt as Administrator

2. netstat -anbo | findstr "8080"

Note: must use double quotes

The last field in the response line is the process id (pid). Stop the process with

3. taskkill /F /PID pid

Answer 2

谢谢Daniu和NickAth ，正如你所说的问题是错误的命令 - ctrl+z 只是暂停了进程，而 ctrl+c 杀死了它，这里工作正常。