Debian Jessie下Tomcat 9.0.7在Eclipse中启动异常求助

Hey there, let's work through this Tomcat startup issue you're facing! It's super common when running Tomcat through Eclipse even though it works fine via the command line. Here are the most effective fixes to get your server up and running properly:

1. Increase Eclipse's Server Startup Timeout #

First off, the error message mentions the 450-second limit—let's bump that up to give Tomcat more breathing room:

• Go to Window > Preferences > Server > Runtime Environments, find your Tomcat v9.0 Server at localhost entry, and click Edit.
• In the server configuration window, scroll to the bottom to find the Timeouts section. Increase the "Start" value (try 900 seconds to start with).
• Alternatively, you can right-click your Tomcat server in the Servers view, select Open, and adjust the timeout directly in the Overview page.

This helps if Tomcat is taking longer to initialize due to deployed projects or first-time setup.

2. Check for Port Conflicts #

Tomcat might be fighting with another process for its default ports (8080 for HTTP, 8005 for shutdown, etc.):

• Open a terminal and run this command to check if port 8080 is occupied:

  sudo netstat -tulpn | grep 8080
  

• If you see another process using the port, either kill that process (use sudo kill <PID> where <PID> is the process ID from the output) or modify Tomcat's port settings:
  1. Navigate to your Tomcat installation directory, open conf/server.xml.
  2. Find the line <Connector port="8080" protocol="HTTP/1.1" ...> and change 8080 to an unused port like 8081.
  3. Save the file and restart Tomcat in Eclipse.

3. Verify Eclipse is Using the Correct Tomcat Installation #

Sometimes Eclipse creates a copy of Tomcat's config in your workspace, which might not match the one you use via command line:

• Right-click your Tomcat server in the Servers view, select Properties.
• Under Location, check if it's set to "Use Tomcat installation" and points to your actual Tomcat 9.0.7 directory (not the workspace copy).
• If not, switch to the "Use Tomcat installation" option and browse to your correct Tomcat path.

4. Clean Tomcat's Temporary Files #

Corrupted temp files can cause startup hangs. Let's clear them out:

• Stop the stuck Tomcat server in Eclipse.
• Delete these folders:
  • Tomcat installation directory: work/ and temp/
  • Eclipse workspace: .metadata/.plugins/org.eclipse.wst.server.core/tmp0 (the tmp0 folder name might vary—look for the one associated with your Tomcat instance)
• Restart Eclipse and try starting Tomcat again.

5. Troubleshoot Deployed Projects #

A misconfigured or broken project could be holding up Tomcat:

• Remove all projects from your Tomcat server (right-click the server > Add and Remove > move all projects to the left column).
• Start Tomcat—if it launches successfully, add your projects back one by one, restarting Tomcat each time. This will help you pinpoint which project is causing the issue.
• Also, check Eclipse's Problems view for any compilation errors, missing dependencies, or configuration issues in your projects.

6. Confirm JDK Compatibility #

Tomcat 9 requires JDK 8 or newer. Make sure Eclipse and Tomcat are using the same compatible JDK:

• Go to Window > Preferences > Java > Installed JREs and ensure you have a JDK 1.8+ listed and set as default.
• Go back to Window > Preferences > Server > Runtime Environments, edit your Tomcat entry, and verify the JRE dropdown is set to the correct JDK.

Give these steps a shot in order—usually one of them resolves the stuck startup issue. Let me know if you hit any roadblocks!

内容的提问来源于stack exchange，提问作者Ciccio Pasticcio