IntelliJ Ultimate中添加配置时无法看到Tomcat Application server的问题咨询

Hey there! Let me clear up this common confusion first:

Enabling Tomcat/EE plugins in IntelliJ does NOT mean you've installed the Tomcat server itself. The plugins just add IDE support for Tomcat-related workflows (like deployment, debugging), but you still need to download and set up the actual Tomcat server on your machine.

Here's how to fix the empty Application Server list: #

• First, download the Tomcat version compatible with your JDK (e.g., Tomcat 9 works with JDK 8+, Tomcat 10 requires JDK 11+). Extract it to a local directory that has no Chinese characters, spaces, or special symbols (e.g., C:\Servers\apache-tomcat-9.0.80 is good; C:\我的工具\Tomcat will cause issues).
• Go back to IntelliJ's Add Configuration window, click the + icon in the top-left corner, then select Tomcat Server → Local.
• In the configuration popup, click the Configure... button next to the Application Server field. Navigate to the directory where you extracted Tomcat, and IntelliJ will automatically detect it.
• Once configured, the Tomcat server will show up in the Application Server dropdown list.

Have other developers faced this issue? #

Absolutely! This is one of the most common gotchas for folks new to IntelliJ and Tomcat. The top causes are:

• Mixing up IDE plugins with actual server installation
• Tomcat installation path containing invalid characters (Chinese, spaces, etc.)
• Mismatched JDK and Tomcat versions (e.g., using JDK 8 with Tomcat 10)
• Corrupted IDE cache (fixable by going to File → Invalidate Caches... and restarting IntelliJ)

If you still run into problems after these steps, double-check your JDK setup in File → Project Structure → SDKs to ensure it meets Tomcat's requirements.

内容的提问来源于stack exchange，提问作者Andie