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Скачать или смотреть How to Successfully Deploy Your WAR File to Jetty: Troubleshooting Common Issues

  • vlogize
  • 2025-09-19
  • 6
How to Successfully Deploy Your WAR File to Jetty: Troubleshooting Common Issues
Deploying WAR file to Jetty: server is running but application didn't startjavaspring bootjetty
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Описание к видео How to Successfully Deploy Your WAR File to Jetty: Troubleshooting Common Issues

Discover the steps to effectively deploy a Spring Boot `WAR file` to Jetty, overcoming the common issue of application not starting.
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This video is based on the question https://stackoverflow.com/q/62445689/ asked by the user 'splekhanov' ( https://stackoverflow.com/u/11961745/ ) and on the answer https://stackoverflow.com/a/62446521/ provided by the user 'M. Deinum' ( https://stackoverflow.com/u/2696260/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Deploying WAR file to Jetty: server is running, but application didn't start

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
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Deploying Your WAR File to Jetty: Troubleshooting the Starting Issue

Deploying a Spring Boot application packaged as a WAR file to Jetty can sometimes lead to frustrating issues, especially when everything seems to be up and running, yet you receive a 404 NOT FOUND error. In this guide, we will explore a common problem that developers face during deployment and provide a concise, actionable solution to get your application running smoothly.

The Problem: Application Does Not Start

You have a Spring Boot application that you've correctly packaged as a WAR file, and while Jetty starts without any issues, your application is not responding as expected. You notice the Jetty server is active at localhost:8080, and you can see some application directories, like /swagger-ui/, but when you try to access your main application, you get a 404 NOT FOUND response.

It's important to understand that this issue often arises from how the server is being initialized and how the Spring Boot framework is supposed to manage the application context.

The Solution: Let Spring Boot Handle the Initialization

Instead of manually trying to start Jetty with a custom setup, it's optimal to let Spring Boot manage the server startup and context configuration. Here's how you can do it:

Steps to Correctly Deploy Your Spring Boot Application

Update your main application class: If you have an application class (for example, MyRestApplication), make sure it is structured as follows:

[[See Video to Reveal this Text or Code Snippet]]

The @ SpringBootApplication annotation enables auto-configuration and component scanning.

Ensure dependencies are set correctly: Verify that you have included both Jetty and spring-boot-starter-web dependencies in your pom.xml. This is crucial for running a Spring Boot application with Jetty.

Build your WAR file using the Spring Boot plugin: Use the Spring Boot Maven plugin to generate your WAR file. If you haven't configured it already, ensure the following snippet is in your pom.xml:

[[See Video to Reveal this Text or Code Snippet]]

Run your application: Instead of starting Jetty manually, simply execute the following command in your terminal, which will run your application and automatically launch Jetty:

[[See Video to Reveal this Text or Code Snippet]]

This command allows Spring Boot to handle the server initiation correctly, letting it manage the application lifecycle without manual intervention.

What This Does For You

By following these steps, you ensure that your Spring Boot application is correctly initialized, which resolves the common deployment issues. You'll not only avoid the 404 error but also streamline your application's deployment process.

Conclusion

Deploying a Spring Boot application as a WAR file should be straightforward when you let Spring Boot manage the server instantiation. By structuring your application class properly and utilizing the Spring Boot Maven plugin, you can significantly reduce deployment headaches and have your application running at localhost:8080 in no time.

If you encounter further issues or have any questions, feel free to reach out or leave a comment below!

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