Spring Security in Spring Boot 3 – Swagger is broken: A Comprehensive Guide to Fixing the Issue

Are you tired of encountering the error “Swagger is broken” when trying to implement Spring Security in your Spring Boot 3 application? You’re not alone! Many developers have faced this frustrating issue, but don’t worry, we’ve got you covered. In this article, we’ll delve into the world of Spring Security and Swagger, explaining the problem, its causes, and most importantly, providing a step-by-step guide to fixing the issue.

The Problem: Swagger is Broken

When you try to access your Spring Boot 3 application’s Swagger UI, you’re greeted with an error message stating “Swagger is broken” or ” Unable to infer base url”. This error occurs when Spring Security is enabled in your application, and Swagger is not properly configured to work with it.

Causes of the Issue

There are several reasons why Swagger breaks when Spring Security is enabled. Here are some of the most common causes:

• Incorrect configuration of Swagger and Spring Security
• Incompatibility between Swagger and Spring Security versions
• Missing dependencies or incorrect dependency versions
• Improper setup of Swagger’s base URL

Step-by-Step Guide to Fixing the Issue

Don’t worry, we’ll walk you through the process of fixing the “Swagger is broken” issue in your Spring Boot 3 application. Follow these steps carefully to get Swagger up and running with Spring Security:

Step 1: Add Dependencies

In your `pom.xml` file (if you’re using Maven) or your `build.gradle` file (if you’re using Gradle), add the following dependencies:

<dependencies>
  <dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-boot-starter</artifactId>
  </dependency>
  <dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-security</artifactId>
  </dependency>
</dependencies>

Or, if you’re using Gradle:

dependencies {
  implementation 'io.springfox:springfox-boot-starter'
  implementation 'io.springfox:springfox-security'
}

Step 2: Configure Swagger

Create a new configuration class for Swagger:

@Configuration
public class SwaggerConfig {
  
  @Bean
  public Docket api() {
    return new Docket(DocumentationType.SWAGGER_2)
      .select()
      .apis(RequestHandlerSelectors.any())
      .paths(PathSelectors.any())
      .build();
  }
  
}

Step 3: Add Swagger Security Configuration

Create a new configuration class for Swagger Security:

@Configuration
@ConditionalOnClass(SecurityConfigurerAdapter.class)
public class SwaggerSecurityConfig extends SecurityConfigurerAdapter {
  
  @Override
  public void configure(HttpSecurity http) throws Exception {
    http.csrf().disable()
      .authorizeRequests()
      .antMatchers("/swagger-ui/*", "/v3/api-docs/**").permitAll()
      .anyRequest().authenticated();
  }
  
}

Step 4: Update Application Security Configuration

In your application’s security configuration class, add the following code:

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
  
  @Override
  protected void configure(HttpSecurity http) throws Exception {
    http.csrf().disable()
      .authorizeRequests()
      .antMatchers("/swagger-ui/*", "/v3/api-docs/**").permitAll()
      .anyRequest().authenticated()
      .and()
      .httpBasic();
  }
  
}

Step 5: Update Swagger’s Base URL

In your `application.properties` file, add the following configuration:

springfox.documentation.swagger-ui.base-url=/swagger-ui

Step 6: Restart Your Application

Finally, restart your Spring Boot 3 application, and you should be able to access your Swagger UI without encountering the “Swagger is broken” error.

Conclusion

That’s it! By following these steps, you should be able to fix the “Swagger is broken” issue in your Spring Boot 3 application with Spring Security. Remember to stay calm, be patient, and take your time when troubleshooting. If you encounter any issues or have questions, feel free to ask in the comments.

Troubleshooting Tips

If you’re still facing issues, here are some troubleshooting tips:

• Check your Swagger and Spring Security versions for compatibility
• Verify that your dependencies are correctly configured
• Ensure that your Swagger configuration is correct
• Check your application’s security configuration for any conflicts
• Try cleaning and rebuilding your project

Best Practices for Spring Security and Swagger

Here are some best practices to keep in mind when working with Spring Security and Swagger:

• Keep your Swagger configuration separate from your application’s security configuration
• Use PermitAll for Swagger’s base URL to avoid authentication issues
• Disable CSRF protection for Swagger’s base URL
• Use HTTP Basic authentication for Swagger’s base URL
• Keep your Swagger and Spring Security versions up-to-date

Conclusion

In conclusion, fixing the “Swagger is broken” issue in Spring Boot 3 applications with Spring Security requires a combination of correctly configured dependencies, Swagger configuration, and security configuration. By following the steps outlined in this article, you should be able to resolve the issue and get Swagger up and running with Spring Security. Remember to troubleshoot patiently and follow best practices to ensure a seamless development experience.

Dependency	Version
springfox-boot-starter	3.0.2
springfox-security	3.0.2

Recommended versions for dependencies:

Frequently Asked Questions

Q: Why does Swagger break when Spring Security is enabled?

A: Swagger breaks when Spring Security is enabled because Swagger is not properly configured to work with Spring Security.

Q: How do I fix the “Swagger is broken” issue in Spring Boot 3?

A: Follow the steps outlined in this article to fix the “Swagger is broken” issue in Spring Boot 3.

Q: What are the common causes of the “Swagger is broken” issue?

A: The common causes of the “Swagger is broken” issue include incorrect configuration of Swagger and Spring Security, incompatibility between Swagger and Spring Security versions, missing dependencies or incorrect dependency versions, and improper setup of Swagger’s base URL.

Q: How do I troubleshoot the “Swagger is broken” issue?

A: Check your Swagger and Spring Security versions for compatibility, verify that your dependencies are correctly configured, ensure that your Swagger configuration is correct, check your application’s security configuration for any conflicts, and try cleaning and rebuilding your project.

Q: What are the best practices for Spring Security and Swagger?

A: Keep your Swagger configuration separate from your application’s security configuration, use PermitAll for Swagger’s base URL to avoid authentication issues, disable CSRF protection for Swagger’s base URL, use HTTP Basic authentication for Swagger’s base URL, and keep your Swagger and Spring Security versions up-to-date.

Frequently Asked Question

Spring Security in Spring Boot 3 got you down? Don’t worry, we’ve got the answers to get your Swagger back in action!