Скачать или смотреть Fixing Your Spring Boot Logger: Create a RollingFile with Logback Configuration

Learn how to set up Logback in Spring Boot to log into an external file using proper configuration of your `logback.xml`. Get your logging on track with these simple steps!
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This video is based on the question https://stackoverflow.com/q/65082687/ asked by the user 'jozinho22' ( https://stackoverflow.com/u/6741310/ ) and on the answer https://stackoverflow.com/a/65156811/ provided by the user 'jozinho22' ( https://stackoverflow.com/u/6741310/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Fixing Your Spring Boot Logger: Create a RollingFile with Logback Configuration

When working on a Spring Boot application, one common requirement is to manage logging effectively, especially when you want to log messages to an external file. If you're attempting to set up a RollingFileAppender using Logback and finding that logs aren't being generated as expected, fret not! In this guide, we’ll explore a common issue and provide you with a clear solution to get your logging set up correctly.

The Problem: Logback Not Creating Log Files

You’ve set up your application and configured your logback.xml, but for some reason, it’s not generating the expected log files. This might leave you wondering if you need to adjust your configuration, specify a file name, or include the logback.xml as a resource in your application. Let’s delve into the solution!

Understanding the Solution

The root cause of the problem often lies in the location where the logback.xml file is placed in your project. Here’s how to properly configure it to ensure your logs are captured correctly.

Step 1: Correct Placement of logback.xml

Location Matters: Ensure that your logback.xml file is located in the src/main/resources directory of your Spring Boot application. This is important because Spring Boot automatically scans this directory for configuration files.

Correct Directory Structure:

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Step 2: Verify Your logback.xml Configuration

It's vital to ensure your logback.xml file is properly configured. Based on your provided configuration, it seems you are on the right track. Just ensure there are no typos or syntax issues. Your configuration should look similar to the following:

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Step 3: Logging in Your Application

Now that you have your logger configured properly, you can use the following code to log within your application:

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Conclusion

By ensuring your logback.xml file is placed correctly in the src/main/resources directory and verifying its configuration, you should now be able to log messages to your specified external file. If you continue to face issues, double-check the configuration for any possible errors and consult the Logback documentation for additional insights. Happy logging!