Скачать или смотреть How to Configure Spring Boot Logging to a File Without XML Format

Discover how to effectively configure logging in your Spring Boot application to prevent XML format output and simplify your log management.
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This video is based on the question https://stackoverflow.com/q/71142413/ asked by the user 'Marcin_S' ( https://stackoverflow.com/u/14293486/ ) and on the answer https://stackoverflow.com/a/71142781/ provided by the user 'oaPiet' ( https://stackoverflow.com/u/6292875/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

Logging is an essential aspect of any application, as it helps developers and system administrators to diagnose issues and monitor application behavior. However, one common concern among developers is the format of the logged data. Many users want to avoid complex formats, such as XML, due to their verbosity and difficulty in readability. In this guide, we'll address a common issue faced by Spring Boot users regarding logging to a file and demonstrate how to simplify this process.

Problem Overview

Recently, a user encountered an issue after configuring logging in their Spring Boot application with the following property:

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

Upon running the application, the following files were generated:

application.logs.0

application.logs.0.lck

The content of application.logs.0 appeared in XML format, which the user found undesirable. Here’s a snippet of what was logged:

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

With the added frustration of a lock file (application.logs.0.lck), the user sought a solution to change this logging format while understanding the implications of the lock file.

Understanding the Lock File

The presence of the .lck file, specifically application.logs.0.lck, serves a critical purpose: it ensures the integrity of the log data. This lock file prevents multiple logger instances from writing to the same log file simultaneously, which could corrupt log records.

In simple terms, the lock file is like a traffic light at an intersection, ensuring that only one vehicle (or process) can write to the log file at any time.

Solution: Configuring Simple Logging Format

To overcome the annoyance of the XML format in log files, you can adjust your logging configuration in Spring Boot to use a simpler, more readable format. You can achieve this by modifying your logging properties as follows:

1. Basic Configuration

You can use different formatters based on your requirements. Here are two options:

Using a Simple Formatter:

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

Spring Boot Simple Formatter:

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

These configurations should be included in your application.properties or application.yml file to ensure that the logs are formatted in a simple and readable manner, rather than XML.

2. Implementation in Your Application

Open your application.properties file (or create one if it doesn’t exist).

Add one of the formatter configurations from above.

Restart your Spring Boot application.

You should now see that log outputs are simplified and easier to read, making your logging management more straightforward.

Conclusion

Effective logging in Spring Boot is critical to ensuring the smooth operation and maintenance of applications. By following the steps outlined in this guide, you can configure your application’s logging to prevent XML formatting and manage log files more effectively, all while maintaining data integrity with the inclusion of lock files.

Feel free to explore further logging options to enhance your application effectively and keep records concise!