Java REST服务（JAX-RS）打包及Tomcat共享主机部署咨询

Hey there! Let's walk through your questions clearly— I’ve been through this exact scenario a few times, so I’ll break it down for you.

For your JAX-RS-based Java REST web app, the WAR (Web Application Archive) format is the standard and most compatible option for Tomcat. Here's how to generate it in NetBeans:

• Right-click your project in the Projects pane, then select Clean and Build. NetBeans will handle compiling your code, resolving dependencies, and spitting out a .war file in your project's dist folder.
• Critical note: Make sure all JAX-RS implementation jars (like Jersey or RESTEasy, whichever you're using) are included in the WAR's WEB-INF/lib directory. Most shared Tomcat hosts don't pre-install JAX-RS libraries, so bundling them with your app ensures everything works out of the box.

Fat JARs (self-contained executable jars) are an option for standalone apps, but they're not ideal for shared Tomcat hosts—stick with WAR for this use case.

Most shared hosting providers that offer Tomcat support fully allow WAR deployment. Here's what you need to know:

• Deployment methods:
  • Use your host's control panel (like cPanel, Plesk, or a custom dashboard): Look for a "WAR Deployment" or "Web App Manager" tool. Upload your .war file, and the panel will auto-unpack and deploy it to Tomcat.
  • FTP upload: If your host allows FTP access to the Tomcat webapps directory, simply upload the WAR file there. Tomcat will automatically detect it, unpack it, and start serving your app.
• Key checks before deploying:
  • Verify Java/Tomcat version compatibility: If your app uses Java 11, ensure the host runs Tomcat 9.x or newer; Java 8 works with Tomcat 8.x/9.x.
  • Double-check JAX-RS configuration: Make sure your app's web.xml (or annotation-based setup like @ApplicationPath) is correctly configured so Tomcat can map your REST endpoints.
  • Domain mapping: After deployment, you'll need to point your custom domain to your app's context path (e.g., if your WAR is named myrest.war, the default path is yourdomain.com/myrest—many hosts let you set this as the root path too).

Hope this helps you get your REST service live on your new domain without any hiccups!

内容的提问来源于stack exchange，提问作者Kakne Prateek