How to Configure Multiple HTTP Security Configurations in Spring Security?

Spring Security: Implementing Multiple HTTP Configurations

Spring Security provides a robust mechanism for implementing security in web applications. In certain scenarios, it becomes necessary to configure multiple login pages and restrict access to different sets of URLs. However, encountering issues when attempting to achieve this can be frustrating.

Problem:

Multiple HTTP configurations fail to work. Despite attempting to configure separate settings for different entry points and protected areas, only one set of configurations is functional.

Solution:

To resolve this issue, it's essential to understand Spring Security's configuration order and how HTTP configurations are applied. The solution involves using the @Order annotation to specify the order in which HTTP configurations should be processed:

@Configuration
@Order(1)
public static class ProviderSecurity extends WebSecurityConfigurerAdapter {
    // Configuration for admin/**
}

@Configuration
@Order(2)
public static class ConsumerSecurity extends WebSecurityConfigurerAdapter {
    // Configuration for consumer/**
}

Explanation:

The @Order annotation allows you to specify the order in which multiple HTTP configurations should be applied. By setting @Order(1) and @Order(2), you ensure that the ProviderSecurity configuration is processed before the ConsumerSecurity configuration.

HTTP Configuration Application:

The first HTTP configuration, ProviderSecurity, matches all URLs (/**) and only restricts access to URLs matching /admin/**. All other URLs are permitted by default.

The second HTTP configuration, ConsumerSecurity, is never applied because the first configuration matches all URLs and does not specifically restrict access to /consumer/**.

By adjusting the configuration order, you can ensure that both configurations are applied in the correct sequence and that the desired security restrictions are enforced.

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