Port 80 is already occupied. How to modify and use the 8080 port before it can be used normally?

1。 How does iis modify port 80: If you want to modify iis without using 80, it's easy. Find it in iis Manager-Website-Properties of your computer, and then change 80 to 8 1 or something.

2.Apache modifies the listening port in the following ways:

Open the box.