Built-In Web Server
IntelliJ IDEA has a built-in web server that can be used to preview and debug your application. This server is always running and does not require any manual configuration. All the project files are served on the built-in server with the root URL http://localhost:<built-in server port>/<project root>, with respect to the project structure.
Integration with the built-in Web server is supported in IntelliJ IDEA 11.1 and higher.
Configuring the built-in web server
If necessary, you can customize the parameters of the built-in web server. Open the Settings / Preferences Dialog by pressing Ctrl+Alt+S or by choosing for Windows and Linux or for macOS, and click Debugger under Build, Execution, Deployment.
Use this spin box to specify the port on which the built-in web server runs. By default this port is set to port 63342 through which IntelliJ IDEA accepts connections from services. You can set the port number to any other value starting with 1024 and higher.
Can accept external connections
If this checkbox is selected, then the files on the built-in server running on the specified port are accessible from another computer.
Allow unsigned requests
| For security reasons, any request to a page on the built-in server from outside IntelliJ IDEA is by default rejected and the following authorization popup is displayed: To access the requested page, click Copy authorization URL to clipboard and paste the generated token in the address bar of the browser. |
However this behaviour may be annoying, for example, it may block your debugging session if manual intervention is impossible. To suppress displaying the authorization popup, select the Allow unsigned requests checkbox.
Opening a file in the browserDo one of the following:
Choosefrom the main menu or press Alt+F2. Then select the desired browser from the list.
Hover your mouse pointer over the code to show the browser icons bar: Click the icon that indicates the desired browser.
Note that if a Deployment server is defined for this project and marked as default, the file will be served from this server instead. If necessary, you can still open the page via the IntelliJ IDEA built-in web server. To do this, open the desired browser and type the URL of the file with respect to the project structure, using http://localhost:<built-in server port>/<project root> as the root URL.