After IntelliJ IDEA project run by default, and then click Run is to restart, but sometimes, you need a different port number configuration items, run at the same time.
Proceed as follows:
1. Click on the drop-down box to hide the upper right corner IDEA Project, a drop-down list, click Edit Configurations
2, pop-up Run / Debug Configuration dialog box, select the Allow parallel run
NOTE: In some older versions of IDEA, there has not Allow parallel run, but Single instance only, so if you uncheck it.
3. Click OK.
Once you've configured, after the project started, more than a small dot on the Run button icon.
