How to Disable Spring Boot Auto-Configuration for Spring Web?

Question

How can I prevent Spring Boot from auto-configuring the spring-web modules?

@SpringBootApplication(exclude = {WebMvcAutoConfiguration.class})

Answer

Spring Boot's auto-configuration aims to simplify the development process by automatically setting up configurations based on the libraries present on the classpath. However, there are scenarios where you might want to prevent specific auto-configurations, such as when fine-tuning application behavior or integrating with custom configurations. This guide will explain how to disable spring-web auto-configuration in a Spring Boot application.

@SpringBootApplication(exclude = {WebMvcAutoConfiguration.class})
public class MyApplication {
    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

Causes

  • Spring Boot includes auto-configuration classes for many modules, including spring-web, which might not suit specific custom applications.
  • You might be integrating Spring Boot with other frameworks or configurations that require you to have complete control over how web modules are configured.

Solutions

  • Use the `@SpringBootApplication` annotation with the `exclude` parameter to disable specific auto-configuration classes.
  • Create a custom configuration class to define specific beans and settings as needed.

Common Mistakes

Mistake: Not excluding the right auto-configuration classes.

Solution: Check the Spring Boot documentation for the correct class name that needs to be excluded.

Mistake: Failing to test the application after exclusions to see if the functionality works as expected.

Solution: Always test your application after making configuration changes to ensure everything is functioning correctly.

Helpers

  • Spring Boot
  • disable auto-configuration
  • spring-web
  • custom configuration
  • WebMvcAutoConfiguration
  • Spring Boot performance tuning

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