How to specify a port number while running flutter web

问题

Is there any way to start Flutter web, with a Headless-Server target, always on the same specified port number ?

Today, running the web application with:

flutter run -d headless-server

Provides a random port number.

回答1:

I found the answer inside the flutter_tools source code:

flutter run -d headless-server --web-port=1234

回答2:

The above solution works fine if you are like using command line. But if you you are using VsCode by CTRL+F5 that won't work. So to make vscode CTRL+F5 run in chrome or web-server go to your project root directory create .vscode directory and inside that folder add launch.json file.

Now if you want to run in web server add this lines in you launch.json

{
 "version": "0.2.0",
 "configurations": [{
        "name": "Flutter",
        "request": "launch",
        "type": "dart",
        "args": ["-d", "web-server","--web-port", "8000"],
    }
]}

And if you want to launch in chrome device change argument web-server to chome i.e.

{   
 "version": "0.2.0",
 "configurations": [{
        "name": "Flutter",
        "request": "launch",
        "type": "dart",
        "args": ["-d", "chrome","--web-port", "8000"],
    }
]}

Now run CTRL+F5

回答3:

This works well too -

flutter run -d web-server --web-port 8080

来源：https://stackoverflow.com/questions/58248277/how-to-specify-a-port-number-while-running-flutter-web