Mac无法终止Tomcat进程，IDEA 2017.2.5中Tomcat8无法停止求助

Hey there, I’ve dealt with this exact Tomcat stuck issue on Mac before—total headache when IDEA’s built-in kill button just won’t do the trick. Let’s work through the fixes step by step:

First, let’s get rid of the stuck process directly through the command line:

• Open Terminal, run either ps aux | grep tomcat or ps aux | grep java (Tomcat runs as a Java process). Look for the row corresponding to your Tomcat instance, note the PID (the second column of numbers).
• Run sudo kill -9 [PID] (replace [PID] with the number you found). The sudo is needed because Tomcat might be running with elevated permissions, and -9 forces an immediate termination (since regular kill might not work on unresponsive processes).
  Note: This skips Tomcat’s graceful shutdown, but it’s the only reliable way when the process is completely stuck.

If IDEA’s kill function isn’t working, here are a few things to check:

• Verify Tomcat Run Configuration: Go to Run > Edit Configurations, select your Tomcat instance. Check the "Before Launch" section—if there are other dependent processes (like build scripts or other servers) that didn’t terminate, they might be keeping Tomcat alive. Remove any unnecessary pre-launch tasks or ensure they’re set to terminate properly.
• Clear IDEA Cache: Sometimes corrupted cache causes process management glitches. Go to File > Invalidate Caches / Restart..., select "Invalidate and Restart". This will clear IDEA’s cached data and often fixes weird behavior like this.
• Check Tomcat’s Shutdown Script: Navigate to your Tomcat installation directory, go to the bin folder, and run ./shutdown.sh manually. If this also fails, the issue is with Tomcat itself (not IDEA)—likely stuck threads or port conflicts, which the terminal kill -9 will resolve.

A few quick tips to avoid future Tomcat lockups:

• Check Port Occupancy Before Launch: Run lsof -i :[your-tomcat-port] (replace with your port, usually 8080) to see if another process is using the port. If so, kill that process first with kill -9 [PID].
• Verify IDEA Shutdown Command Path: In your Tomcat Run Configuration, go to the Startup/Connection tab. Make sure the "Shutdown script" path points to the correct shutdown.sh in your Tomcat bin folder. A wrong path means IDEA can’t trigger the graceful shutdown.

内容的提问来源于stack exchange，提问作者liweinan