spring security enable global cors

To enable global CORS (Cross-Origin Resource Sharing) in Spring Security, you can follow these steps:

1. Add the required dependencies: Include the necessary dependencies for CORS support in your Spring project. For example, you can add the following dependencies to your build.gradle file:

implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-security'
implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
implementation 'org.springframework.boot:spring-boot-starter-validation'
implementation 'org.springframework.boot:spring-boot-starter-validation'

1. Create a configuration class: Create a configuration class to configure CORS globally for your Spring Security application. You can create a class, for example, named "SecurityConfig" and annotate it with @Configuration and @EnableWebSecurity:

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    // ...
}

1. Override the configure method: In the configuration class, override the configure method to configure CORS. Use the cors() method from the HttpSecurity class to enable CORS globally. For example:

@Override
protected void configure(HttpSecurity http) throws Exception {
    http
        .cors()
        .and()
        // ... other security configurations
}

1. Configure the CORS policy: To configure the CORS policy, you can use the cors() method with a custom CorsConfiguration object. For example, you can create a method to define a global CORS policy:

@Bean
public CorsConfigurationSource corsConfigurationSource() {
    CorsConfiguration configuration = new CorsConfiguration();
    configuration.addAllowedOrigin("*");
    configuration.addAllowedMethod("*");
    configuration.addAllowedHeader("*");
    configuration.setAllowCredentials(true);
    UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
    source.registerCorsConfiguration("/", configuration);
    return source;
}

1. Register the CORS configuration: Lastly, register the CORS configuration in the configure method by using the corsConfigurationSource() method. For example:

@Override
protected void configure(HttpSecurity http) throws Exception {
    http
        .cors().configurationSource(corsConfigurationSource())
        .and()
        // ... other security configurations
}

By following these steps, you can enable global CORS in Spring Security, allowing cross-origin requests to be processed properly. This configuration helps in handling requests from different origins, enabling your application to work seamlessly in a cross-origin environment.