mirror of
				https://github.com/spring-projects/spring-security.git
				synced 2025-10-31 14:48:54 +00:00 
			
		
		
		
	
		
			
				
	
	
		
			696 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			696 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| 
 | |
| [[jc]]
 | |
| = Java Configuration
 | |
| 
 | |
| General support for {spring-framework-reference-url}core/beans/java.html[Java configuration] was added to Spring Framework in Spring 3.1.
 | |
| Spring Security 3.2 introduced Java configuration to let users configure Spring Security without the use of any XML.
 | |
| 
 | |
| If you are familiar with the xref:servlet/configuration/xml-namespace.adoc#ns-config[Security Namespace Configuration], you should find quite a few similarities between it and Spring Security Java configuration.
 | |
| 
 | |
| [NOTE]
 | |
| ====
 | |
| Spring Security provides https://github.com/spring-projects/spring-security-samples/tree/main/servlet/java-configuration[lots of sample applications] to demonstrate the use of Spring Security Java Configuration.
 | |
| ====
 | |
| 
 | |
| [[jc-hello-wsca]]
 | |
| == Hello Web Security Java Configuration
 | |
| 
 | |
| The first step is to create our Spring Security Java Configuration.
 | |
| The configuration creates a Servlet Filter known as the `springSecurityFilterChain`, which is responsible for all the security (protecting the application URLs, validating submitted username and passwords, redirecting to the log in form, and so on) within your application.
 | |
| The following example shows the most basic example of a Spring Security Java Configuration:
 | |
| 
 | |
| [source,java]
 | |
| ----
 | |
| import org.springframework.beans.factory.annotation.Autowired;
 | |
| 
 | |
| import org.springframework.context.annotation.*;
 | |
| import org.springframework.security.config.annotation.authentication.builders.*;
 | |
| import org.springframework.security.config.annotation.web.configuration.*;
 | |
| 
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| public class WebSecurityConfig {
 | |
| 
 | |
| 	@Bean
 | |
| 	public UserDetailsService userDetailsService() {
 | |
| 		InMemoryUserDetailsManager manager = new InMemoryUserDetailsManager();
 | |
| 		manager.createUser(User.withDefaultPasswordEncoder().username("user").password("password").roles("USER").build());
 | |
| 		return manager;
 | |
| 	}
 | |
| }
 | |
| ----
 | |
| 
 | |
| This configuration is not complex or extensive, but it does a lot:
 | |
| 
 | |
| * Require authentication to every URL in your application
 | |
| * Generate a login form for you
 | |
| * Let the user with a *Username* of `user` and a *Password* of `password` authenticate with form based authentication
 | |
| * Let the user logout
 | |
| * https://en.wikipedia.org/wiki/Cross-site_request_forgery[CSRF attack] prevention
 | |
| * https://en.wikipedia.org/wiki/Session_fixation[Session Fixation] protection
 | |
| * Security Header integration:
 | |
| ** https://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security[HTTP Strict Transport Security] for secure requests
 | |
| ** https://msdn.microsoft.com/en-us/library/ie/gg622941(v=vs.85).aspx[X-Content-Type-Options] integration
 | |
| ** Cache Control (which you can override later in your application to allow caching of your static resources)
 | |
| ** https://msdn.microsoft.com/en-us/library/dd565647(v=vs.85).aspx[X-XSS-Protection] integration
 | |
| ** X-Frame-Options integration to help prevent https://en.wikipedia.org/wiki/Clickjacking[Clickjacking]
 | |
| * Integration with the following Servlet API methods:
 | |
| ** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#getRemoteUser()[`HttpServletRequest#getRemoteUser()`]
 | |
| ** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#getUserPrincipal()[`HttpServletRequest#getUserPrincipal()`]
 | |
| ** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#isUserInRole(java.lang.String)[`HttpServletRequest#isUserInRole(java.lang.String)`]
 | |
| ** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#login(java.lang.String,%20java.lang.String)[`HttpServletRequest#login(java.lang.String, java.lang.String)`]
 | |
| ** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#logout()[`HttpServletRequest#logout()`]
 | |
| 
 | |
| === AbstractSecurityWebApplicationInitializer
 | |
| 
 | |
| The next step is to register the `springSecurityFilterChain` with the WAR file.
 | |
| You can do so in Java configuration with {spring-framework-reference-url}web/webmvc/mvc-servlet/container-config.html[Spring's `WebApplicationInitializer` support] in a Servlet 3.0+ environment.
 | |
| Not surprisingly, Spring Security provides a base class (`AbstractSecurityWebApplicationInitializer`) to ensure that the `springSecurityFilterChain` gets registered for you.
 | |
| The way in which we use `AbstractSecurityWebApplicationInitializer` differs depending on if we are already using Spring or if Spring Security is the only Spring component in our application.
 | |
| 
 | |
| * <<abstractsecuritywebapplicationinitializer-without-existing-spring>> - Use these instructions if you are not already using Spring
 | |
| * <<abstractsecuritywebapplicationinitializer-with-spring-mvc>> - Use these instructions if you are already using Spring
 | |
| 
 | |
| [[abstractsecuritywebapplicationinitializer-without-existing-spring]]
 | |
| === AbstractSecurityWebApplicationInitializer without Existing Spring
 | |
| 
 | |
| If you are not using Spring or Spring MVC, you need to pass the `WebSecurityConfig` to the superclass to ensure the configuration is picked up:
 | |
| 
 | |
| [source,java]
 | |
| ----
 | |
| import org.springframework.security.web.context.*;
 | |
| 
 | |
| public class SecurityWebApplicationInitializer
 | |
| 	extends AbstractSecurityWebApplicationInitializer {
 | |
| 
 | |
| 	public SecurityWebApplicationInitializer() {
 | |
| 		super(WebSecurityConfig.class);
 | |
| 	}
 | |
| }
 | |
| ----
 | |
| 
 | |
| The `SecurityWebApplicationInitializer`:
 | |
| 
 | |
| * Automatically registers the `springSecurityFilterChain` Filter for every URL in your application.
 | |
| * Add a `ContextLoaderListener` that loads the <<jc-hello-wsca,WebSecurityConfig>>.
 | |
| 
 | |
| [[abstractsecuritywebapplicationinitializer-with-spring-mvc]]
 | |
| === AbstractSecurityWebApplicationInitializer with Spring MVC
 | |
| 
 | |
| If we use Spring elsewhere in our application, we probably already have a `WebApplicationInitializer` that is loading our Spring Configuration.
 | |
| If we use the previous configuration, we would get an error.
 | |
| Instead, we should register Spring Security with the existing `ApplicationContext`.
 | |
| For example, if we use Spring MVC, our `SecurityWebApplicationInitializer` could look something like the following:
 | |
| 
 | |
| [source,java]
 | |
| ----
 | |
| import org.springframework.security.web.context.*;
 | |
| 
 | |
| public class SecurityWebApplicationInitializer
 | |
| 	extends AbstractSecurityWebApplicationInitializer {
 | |
| 
 | |
| }
 | |
| ----
 | |
| 
 | |
| This only registers the `springSecurityFilterChain` for every URL in your application.
 | |
| After that, we need to ensure that `WebSecurityConfig` was loaded in our existing `ApplicationInitializer`.
 | |
| For example, if we use Spring MVC it is added in the `getServletConfigClasses()`:
 | |
| 
 | |
| [[message-web-application-inititializer-java]]
 | |
| [source,java]
 | |
| ----
 | |
| public class MvcWebApplicationInitializer extends
 | |
| 		AbstractAnnotationConfigDispatcherServletInitializer {
 | |
| 
 | |
| 	@Override
 | |
| 	protected Class<?>[] getServletConfigClasses() {
 | |
| 		return new Class[] { WebSecurityConfig.class, WebMvcConfig.class };
 | |
| 	}
 | |
| 
 | |
| 	// ... other overrides ...
 | |
| }
 | |
| ----
 | |
| 
 | |
| The reason for this is that Spring Security needs to be able to inspect some Spring MVC configuration in order to appropriately configure xref:servlet/authorization/authorize-http-requests.adoc#authorizing-endpoints[underlying request matchers], so they need to be in the same application context.
 | |
| Placing Spring Security in `getRootConfigClasses` places it into a parent application context that may not be able to find Spring MVC's `HandlerMappingIntrospector`.
 | |
| 
 | |
| ==== Configuring for Multiple Spring MVC Dispatchers
 | |
| 
 | |
| If desired, any Spring Security configuration that is unrelated to Spring MVC may be placed in a different configuration class like so:
 | |
| 
 | |
| [source,java]
 | |
| ----
 | |
| public class MvcWebApplicationInitializer extends
 | |
| 		AbstractAnnotationConfigDispatcherServletInitializer {
 | |
| 
 | |
| 	@Override
 | |
|     protected Class<?>[] getRootConfigClasses() {
 | |
| 		return new Class[] { NonWebSecurityConfig.class };
 | |
|     }
 | |
| 
 | |
| 	@Override
 | |
| 	protected Class<?>[] getServletConfigClasses() {
 | |
| 		return new Class[] { WebSecurityConfig.class, WebMvcConfig.class };
 | |
| 	}
 | |
| 
 | |
| 	// ... other overrides ...
 | |
| }
 | |
| ----
 | |
| 
 | |
| This can be helpful if you have multiple instances of `AbstractAnnotationConfigDispatcherServletInitializer` and don't want to duplicate the general security configuration across both of them.
 | |
| 
 | |
| [[jc-httpsecurity]]
 | |
| == HttpSecurity
 | |
| 
 | |
| Thus far, our <<jc-hello-wsca,`WebSecurityConfig`>> contains only information about how to authenticate our users.
 | |
| How does Spring Security know that we want to require all users to be authenticated?
 | |
| How does Spring Security know we want to support form-based authentication?
 | |
| Actually, there is a configuration class (called `SecurityFilterChain`) that is being invoked behind the scenes.
 | |
| It is configured with the following default implementation:
 | |
| 
 | |
| [source,java]
 | |
| ----
 | |
| @Bean
 | |
| public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
 | |
| 	http
 | |
| 		.authorizeHttpRequests(authorize -> authorize
 | |
| 			.anyRequest().authenticated()
 | |
| 		)
 | |
| 		.formLogin(Customizer.withDefaults())
 | |
| 		.httpBasic(Customizer.withDefaults());
 | |
| 	return http.build();
 | |
| }
 | |
| ----
 | |
| 
 | |
| The default configuration (shown in the preceding example):
 | |
| 
 | |
| * Ensures that any request to our application requires the user to be authenticated
 | |
| * Lets users authenticate with form-based login
 | |
| * Lets users authenticate with HTTP Basic authentication
 | |
| 
 | |
| Note that this configuration parallels the XML namespace configuration:
 | |
| 
 | |
| [source,xml]
 | |
| ----
 | |
| <http>
 | |
| 	<intercept-url pattern="/**" access="authenticated"/>
 | |
| 	<form-login />
 | |
| 	<http-basic />
 | |
| </http>
 | |
| ----
 | |
| 
 | |
| === Multiple HttpSecurity Instances
 | |
| 
 | |
| To effectively manage security in an application where certain areas need different protection, we can employ multiple filter chains alongside the `securityMatcher` DSL method.
 | |
| This approach allows us to define distinct security configurations tailored to specific parts of the application, enhancing overall application security and control.
 | |
| 
 | |
| We can configure multiple `HttpSecurity` instances just as we can have multiple `<http>` blocks in XML.
 | |
| The key is to register multiple `SecurityFilterChain` ``@Bean``s.
 | |
| The following example has a different configuration for URLs that begin with `/api/`:
 | |
| 
 | |
| [[multiple-httpsecurity-instances-java]]
 | |
| [source,java]
 | |
| ----
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| public class MultiHttpSecurityConfig {
 | |
| 	@Bean                                                             <1>
 | |
| 	public UserDetailsService userDetailsService() throws Exception {
 | |
| 		UserBuilder users = User.withDefaultPasswordEncoder();
 | |
| 		InMemoryUserDetailsManager manager = new InMemoryUserDetailsManager();
 | |
| 		manager.createUser(users.username("user").password("password").roles("USER").build());
 | |
| 		manager.createUser(users.username("admin").password("password").roles("USER","ADMIN").build());
 | |
| 		return manager;
 | |
| 	}
 | |
| 
 | |
| 	@Bean
 | |
| 	@Order(1)                                                        <2>
 | |
| 	public SecurityFilterChain apiFilterChain(HttpSecurity http) throws Exception {
 | |
| 		http
 | |
| 			.securityMatcher("/api/**")                              <3>
 | |
| 			.authorizeHttpRequests(authorize -> authorize
 | |
| 				.anyRequest().hasRole("ADMIN")
 | |
| 			)
 | |
| 			.httpBasic(Customizer.withDefaults());
 | |
| 		return http.build();
 | |
| 	}
 | |
| 
 | |
| 	@Bean                                                            <4>
 | |
| 	public SecurityFilterChain formLoginFilterChain(HttpSecurity http) throws Exception {
 | |
| 		http
 | |
| 			.authorizeHttpRequests(authorize -> authorize
 | |
| 				.anyRequest().authenticated()
 | |
| 			)
 | |
| 			.formLogin(Customizer.withDefaults());
 | |
| 		return http.build();
 | |
| 	}
 | |
| }
 | |
| ----
 | |
| <1> Configure Authentication as usual.
 | |
| <2> Create an instance of `SecurityFilterChain` that contains `@Order` to specify which `SecurityFilterChain` should be considered first.
 | |
| <3> The `http.securityMatcher()` states that this `HttpSecurity` is applicable only to URLs that begin with `/api/`.
 | |
| <4> Create another instance of `SecurityFilterChain`.
 | |
| If the URL does not begin with `/api/`, this configuration is used.
 | |
| This configuration is considered after `apiFilterChain`, since it has an `@Order` value after `1` (no `@Order` defaults to last).
 | |
| 
 | |
| === Choosing `securityMatcher` or `requestMatchers`
 | |
| 
 | |
| A common question is:
 | |
| 
 | |
| > What is the difference between the `http.securityMatcher()` method and `requestMatchers()` used for request authorization (i.e. inside of `http.authorizeHttpRequests()`)?
 | |
| 
 | |
| To answer this question, it helps to understand that each `HttpSecurity` instance used to build a `SecurityFilterChain` contains a `RequestMatcher` to match incoming requests.
 | |
| If a request does not match a `SecurityFilterChain` with higher priority (e.g. `@Order(1)`), the request can be tried against a filter chain with lower priority (e.g. no `@Order`).
 | |
| 
 | |
| [NOTE]
 | |
| ====
 | |
| The matching logic for multiple filter chains is performed by the xref:servlet/architecture.adoc#servlet-filterchainproxy[`FilterChainProxy`].
 | |
| ====
 | |
| 
 | |
| The default `RequestMatcher` matches *any request* to ensure Spring Security protects *all requests by default*.
 | |
| 
 | |
| [NOTE]
 | |
| ====
 | |
| Specifying a `securityMatcher` overrides this default.
 | |
| ====
 | |
| 
 | |
| [WARNING]
 | |
| ====
 | |
| If no filter chain matches a particular request, the request is *not protected* by Spring Security.
 | |
| ====
 | |
| 
 | |
| The following example demonstrates a single filter chain that only protects requests that begin with `/secured/`:
 | |
| 
 | |
| [[choosing-security-matcher-request-matchers-java]]
 | |
| [source,java]
 | |
| ----
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| public class PartialSecurityConfig {
 | |
| 
 | |
| 	@Bean
 | |
| 	public UserDetailsService userDetailsService() throws Exception {
 | |
| 		// ...
 | |
| 	}
 | |
| 
 | |
| 	@Bean
 | |
| 	public SecurityFilterChain securedFilterChain(HttpSecurity http) throws Exception {
 | |
| 		http
 | |
| 			.securityMatcher("/secured/**")                            <1>
 | |
| 			.authorizeHttpRequests(authorize -> authorize
 | |
| 				.requestMatchers("/secured/user").hasRole("USER")      <2>
 | |
| 				.requestMatchers("/secured/admin").hasRole("ADMIN")    <3>
 | |
| 				.anyRequest().authenticated()                          <4>
 | |
| 			)
 | |
| 			.httpBasic(Customizer.withDefaults())
 | |
| 			.formLogin(Customizer.withDefaults());
 | |
| 		return http.build();
 | |
| 	}
 | |
| }
 | |
| ----
 | |
| <1> Requests that begin with `/secured/` will be protected but any other requests are not protected.
 | |
| <2> Requests to `/secured/user` require the `ROLE_USER` authority.
 | |
| <3> Requests to `/secured/admin` require the `ROLE_ADMIN` authority.
 | |
| <4> Any other requests (such as `/secured/other`) simply require an authenticated user.
 | |
| 
 | |
| [TIP]
 | |
| ====
 | |
| It is _recommended_ to provide a `SecurityFilterChain` that does not specify any `securityMatcher` to ensure the entire application is protected, as demonstrated in the <<multiple-httpsecurity-instances-java,earlier example>>.
 | |
| ====
 | |
| 
 | |
| Notice that the `requestMatchers` method only applies to individual authorization rules.
 | |
| Each request listed there must also match the overall `securityMatcher` for this particular `HttpSecurity` instance used to create the `SecurityFilterChain`.
 | |
| Using `anyRequest()` in this example matches all other requests within this particular `SecurityFilterChain` (which must begin with `/secured/`).
 | |
| 
 | |
| [NOTE]
 | |
| ====
 | |
| See xref:servlet/authorization/authorize-http-requests.adoc[Authorize HttpServletRequests] for more information on `requestMatchers`.
 | |
| ====
 | |
| 
 | |
| === `SecurityFilterChain` Endpoints
 | |
| 
 | |
| Several filters in the `SecurityFilterChain` directly provide endpoints, such as the `UsernamePasswordAuthenticationFilter` which is set up by `http.formLogin()` and provides the `POST /login` endpoint.
 | |
| In the <<choosing-security-matcher-request-matchers-java,above example>>, the `/login` endpoint is not matched by `http.securityMatcher("/secured/**")` and therefore that application would not have any `GET /login` or `POST /login` endpoint.
 | |
| Such requests would return `404 Not Found`.
 | |
| This is often surprising to users.
 | |
| 
 | |
| Specifying `http.securityMatcher()` affects what requests are matched by that `SecurityFilterChain`.
 | |
| However, it does not automatically affect endpoints provided by the filter chain.
 | |
| In such cases, you may need to customize the URL of any endpoints you would like the filter chain to provide.
 | |
| 
 | |
| The following example demonstrates a configuration that secures requests that begin with `/secured/` and denies all other requests, while also customizing endpoints provided by the `SecurityFilterChain`:
 | |
| 
 | |
| [[security-filter-chain-endpoints-java]]
 | |
| [source,java]
 | |
| ----
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| public class SecuredSecurityConfig {
 | |
| 
 | |
| 	@Bean
 | |
| 	public UserDetailsService userDetailsService() throws Exception {
 | |
| 		// ...
 | |
| 	}
 | |
| 
 | |
| 	@Bean
 | |
| 	@Order(1)
 | |
| 	public SecurityFilterChain securedFilterChain(HttpSecurity http) throws Exception {
 | |
| 		http
 | |
| 			.securityMatcher("/secured/**")                            <1>
 | |
| 			.authorizeHttpRequests(authorize -> authorize
 | |
| 				.anyRequest().authenticated()                          <2>
 | |
| 			)
 | |
| 			.formLogin(formLogin -> formLogin                          <3>
 | |
| 				.loginPage("/secured/login")
 | |
| 				.loginProcessingUrl("/secured/login")
 | |
| 				.permitAll()
 | |
| 			)
 | |
| 			.logout(logout -> logout                                   <4>
 | |
| 				.logoutUrl("/secured/logout")
 | |
| 				.logoutSuccessUrl("/secured/login?logout")
 | |
| 				.permitAll()
 | |
| 			)
 | |
| 			.formLogin(Customizer.withDefaults());
 | |
| 		return http.build();
 | |
| 	}
 | |
| 
 | |
| 	@Bean
 | |
| 	public SecurityFilterChain defaultFilterChain(HttpSecurity http) throws Exception {
 | |
| 		http
 | |
| 			.authorizeHttpRequests(authorize -> authorize
 | |
| 				.anyRequest().denyAll()                                <5>
 | |
| 			);
 | |
| 		return http.build();
 | |
| 	}
 | |
| }
 | |
| ----
 | |
| <1> Requests that begin with `/secured/` will be protected by this filter chain.
 | |
| <2> Requests that begin with `/secured/` require an authenticated user.
 | |
| <3> Customize form login to prefix URLs with `/secured/`.
 | |
| <4> Customize logout to prefix URLs with `/secured/`.
 | |
| <5> All other requests will be denied.
 | |
| 
 | |
| [NOTE]
 | |
| ====
 | |
| This example customizes the login and logout pages, which disables Spring Security's generated pages.
 | |
| You must xref:servlet/authentication/passwords/form.adoc#servlet-authentication-form-custom[provide your own] custom endpoints for `GET /secured/login` and `GET /secured/logout`.
 | |
| Note that Spring Security still provides `POST /secured/login` and `POST /secured/logout` endpoints for you.
 | |
| ====
 | |
| 
 | |
| === Real World Example
 | |
| 
 | |
| The following example demonstrates a slightly more real-world configuration putting all of these elements together:
 | |
| 
 | |
| [[real-world-example-java]]
 | |
| [source,java]
 | |
| ----
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| public class BankingSecurityConfig {
 | |
| 
 | |
|     @Bean                                                              <1>
 | |
|     public UserDetailsService userDetailsService() {
 | |
| 		UserBuilder users = User.withDefaultPasswordEncoder();
 | |
|         InMemoryUserDetailsManager manager = new InMemoryUserDetailsManager();
 | |
|         manager.createUser(users.username("user1").password("password").roles("USER", "VIEW_BALANCE").build());
 | |
|         manager.createUser(users.username("user2").password("password").roles("USER").build());
 | |
|         manager.createUser(users.username("admin").password("password").roles("ADMIN").build());
 | |
|         return manager;
 | |
|     }
 | |
| 
 | |
|     @Bean
 | |
|     @Order(1)                                                          <2>
 | |
|     public SecurityFilterChain approvalsSecurityFilterChain(HttpSecurity http) throws Exception {
 | |
|         String[] approvalsPaths = { "/accounts/approvals/**", "/loans/approvals/**", "/credit-cards/approvals/**" };
 | |
|         http
 | |
|             .securityMatcher(approvalsPaths)
 | |
|             .authorizeHttpRequests(authorize -> authorize
 | |
| 				.anyRequest().hasRole("ADMIN")
 | |
|             )
 | |
|             .httpBasic(Customizer.withDefaults());
 | |
|         return http.build();
 | |
|     }
 | |
| 
 | |
|     @Bean
 | |
|     @Order(2)                                                          <3>
 | |
|     public SecurityFilterChain bankingSecurityFilterChain(HttpSecurity http) throws Exception {
 | |
|         String[] bankingPaths = { "/accounts/**", "/loans/**", "/credit-cards/**", "/balances/**" };
 | |
| 		String[] viewBalancePaths = { "/balances/**" };
 | |
|         http
 | |
| 			.securityMatcher(bankingPaths)
 | |
| 			.authorizeHttpRequests(authorize -> authorize
 | |
| 				.requestMatchers(viewBalancePaths).hasRole("VIEW_BALANCE")
 | |
| 				.anyRequest().hasRole("USER")
 | |
|             );
 | |
|         return http.build();
 | |
|     }
 | |
| 
 | |
|     @Bean                                                              <4>
 | |
|     public SecurityFilterChain defaultSecurityFilterChain(HttpSecurity http) throws Exception {
 | |
| 		String[] allowedPaths = { "/", "/user-login", "/user-logout", "/notices", "/contact", "/register" };
 | |
|         http
 | |
|             .authorizeHttpRequests(authorize -> authorize
 | |
| 				.requestMatchers(allowedPaths).permitAll()
 | |
| 				.anyRequest().authenticated()
 | |
|             )
 | |
| 			.formLogin(formLogin -> formLogin
 | |
| 				.loginPage("/user-login")
 | |
| 				.loginProcessingUrl("/user-login")
 | |
| 			)
 | |
| 			.logout(logout -> logout
 | |
| 				.logoutUrl("/user-logout")
 | |
| 				.logoutSuccessUrl("/?logout")
 | |
| 			);
 | |
|         return http.build();
 | |
|     }
 | |
| }
 | |
| ----
 | |
| <1> Begin by configuring authentication settings.
 | |
| <2> Define a `SecurityFilterChain` instance with `@Order(1)`, which means that this filter chain will have the highest priority.
 | |
|     This filter chain applies only to requests that begin with `/accounts/approvals/`, `/loans/approvals/` or `/credit-cards/approvals/`.
 | |
| 	Requests to this filter chain require the `ROLE_ADMIN` authority and allow HTTP Basic Authentication.
 | |
| <3> Next, create another `SecurityFilterChain` instance with `@Order(2)` which will be considered second.
 | |
|     This filter chain applies only to requests that begin with `/accounts/`, `/loans/`, `/credit-cards/`, or `/balances/`.
 | |
| 	Notice that because this filter chain is second, any requests that include `/approvals/` will match the previous filter chain and will *not* be matched by this filter chain.
 | |
| 	Requests to this filter chain require the `ROLE_USER` authority.
 | |
| 	This filter chain does not define any authentication because the next (default) filter chain contains that configuration.
 | |
| <4> Lastly, create an additional `SecurityFilterChain` instance without an `@Order` annotation.
 | |
| 	This configuration will handle requests not covered by the other filter chains and will be processed last (no `@Order` defaults to last).
 | |
| 	Requests that match `/`, `/user-login`, `/user-logout`, `/notices`, `/contact` and `/register` allow access without authentication.
 | |
| 	Any other requests require the user to be authenticated to access any URL not explicitly allowed or protected by other filter chains.
 | |
| 
 | |
| [[jc-custom-dsls]]
 | |
| == Custom DSLs
 | |
| 
 | |
| You can provide your own custom DSLs in Spring Security:
 | |
| 
 | |
| [tabs]
 | |
| ======
 | |
| Java::
 | |
| +
 | |
| [source,java,role="primary"]
 | |
| ----
 | |
| public class MyCustomDsl extends AbstractHttpConfigurer<MyCustomDsl, HttpSecurity> {
 | |
| 	private boolean flag;
 | |
| 
 | |
| 	@Override
 | |
| 	public void init(HttpSecurity http) throws Exception {
 | |
| 		// any method that adds another configurer
 | |
| 		// must be done in the init method
 | |
| 		http.csrf().disable();
 | |
| 	}
 | |
| 
 | |
| 	@Override
 | |
| 	public void configure(HttpSecurity http) throws Exception {
 | |
| 		ApplicationContext context = http.getSharedObject(ApplicationContext.class);
 | |
| 
 | |
| 		// here we lookup from the ApplicationContext. You can also just create a new instance.
 | |
| 		MyFilter myFilter = context.getBean(MyFilter.class);
 | |
| 		myFilter.setFlag(flag);
 | |
| 		http.addFilterBefore(myFilter, UsernamePasswordAuthenticationFilter.class);
 | |
| 	}
 | |
| 
 | |
| 	public MyCustomDsl flag(boolean value) {
 | |
| 		this.flag = value;
 | |
| 		return this;
 | |
| 	}
 | |
| 
 | |
| 	public static MyCustomDsl customDsl() {
 | |
| 		return new MyCustomDsl();
 | |
| 	}
 | |
| }
 | |
| ----
 | |
| 
 | |
| Kotlin::
 | |
| +
 | |
| [source,kotlin,role="secondary"]
 | |
| ----
 | |
| class MyCustomDsl : AbstractHttpConfigurer<MyCustomDsl, HttpSecurity>() {
 | |
|     var flag: Boolean = false
 | |
| 
 | |
|     override fun init(http: HttpSecurity) {
 | |
|         // any method that adds another configurer
 | |
|         // must be done in the init method
 | |
|         http.csrf().disable()
 | |
|     }
 | |
| 
 | |
|     override fun configure(http: HttpSecurity) {
 | |
|         val context: ApplicationContext = http.getSharedObject(ApplicationContext::class.java)
 | |
| 
 | |
|         // here we lookup from the ApplicationContext. You can also just create a new instance.
 | |
|         val myFilter: MyFilter = context.getBean(MyFilter::class.java)
 | |
|         myFilter.setFlag(flag)
 | |
|         http.addFilterBefore(myFilter, UsernamePasswordAuthenticationFilter::class.java)
 | |
|     }
 | |
| 
 | |
|     companion object {
 | |
|         @JvmStatic
 | |
|         fun customDsl(): MyCustomDsl {
 | |
|             return MyCustomDsl()
 | |
|         }
 | |
|     }
 | |
| }
 | |
| ----
 | |
| ======
 | |
| 
 | |
| [NOTE]
 | |
| ====
 | |
| This is actually how methods like `HttpSecurity.authorizeHttpRequests()` are implemented.
 | |
| ====
 | |
| 
 | |
| You can then use the custom DSL:
 | |
| 
 | |
| [tabs]
 | |
| ======
 | |
| Java::
 | |
| +
 | |
| [source,java,role="primary"]
 | |
| ----
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| public class Config {
 | |
| 	@Bean
 | |
| 	public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
 | |
| 		http
 | |
| 			.with(MyCustomDsl.customDsl(), (dsl) -> dsl
 | |
| 				.flag(true)
 | |
| 			)
 | |
| 			// ...
 | |
| 		return http.build();
 | |
| 	}
 | |
| }
 | |
| ----
 | |
| 
 | |
| Kotlin::
 | |
| +
 | |
| [source,kotlin,role="secondary"]
 | |
| ----
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| class Config {
 | |
| 
 | |
|     @Bean
 | |
|     fun filterChain(http: HttpSecurity): SecurityFilterChain {
 | |
|         http
 | |
|             .with(MyCustomDsl.customDsl()) {
 | |
|                 flag = true
 | |
|             }
 | |
|             // ...
 | |
| 
 | |
|         return http.build()
 | |
|     }
 | |
| }
 | |
| ----
 | |
| ======
 | |
| 
 | |
| The code is invoked in the following order:
 | |
| 
 | |
| * Code in the `Config.filterChain` method is invoked
 | |
| * Code in the `MyCustomDsl.init` method is invoked
 | |
| * Code in the `MyCustomDsl.configure` method is invoked
 | |
| 
 | |
| If you want, you can have `HttpSecurity` add `MyCustomDsl` by default by using `SpringFactories`.
 | |
| For example, you can create a resource on the classpath named `META-INF/spring.factories` with the following contents:
 | |
| 
 | |
| .META-INF/spring.factories
 | |
| [source]
 | |
| ----
 | |
| org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer = sample.MyCustomDsl
 | |
| ----
 | |
| 
 | |
| You can also explicit disable the default:
 | |
| 
 | |
| [tabs]
 | |
| ======
 | |
| Java::
 | |
| +
 | |
| [source,java,role="primary"]
 | |
| ----
 | |
| 
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| public class Config {
 | |
| 	@Bean
 | |
| 	public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
 | |
| 		http
 | |
| 			.with(MyCustomDsl.customDsl(), (dsl) -> dsl
 | |
| 				.disable()
 | |
| 			)
 | |
| 			...;
 | |
| 		return http.build();
 | |
| 	}
 | |
| }
 | |
| ----
 | |
| 
 | |
| Kotlin::
 | |
| +
 | |
| [source,kotlin,role="secondary"]
 | |
| ----
 | |
| @Configuration
 | |
| @EnableWebSecurity
 | |
| class Config {
 | |
| 
 | |
|     @Bean
 | |
|     fun filterChain(http: HttpSecurity): SecurityFilterChain {
 | |
|         http
 | |
|             .with(MyCustomDsl.customDsl()) {
 | |
|                 disable()
 | |
|             }
 | |
|             // ...
 | |
|         return http.build()
 | |
|     }
 | |
| 
 | |
| }
 | |
| ----
 | |
| ======
 | |
| 
 | |
| [[post-processing-configured-objects]]
 | |
| == Post Processing Configured Objects
 | |
| 
 | |
| Spring Security's Java configuration does not expose every property of every object that it configures.
 | |
| This simplifies the configuration for a majority of users.
 | |
| After all, if every property were exposed, users could use standard bean configuration.
 | |
| 
 | |
| While there are good reasons to not directly expose every property, users may still need more advanced configuration options.
 | |
| To address this issue, Spring Security introduces the concept of an `ObjectPostProcessor`, which can be used to modify or replace many of the `Object` instances created by the Java Configuration.
 | |
| For example, to configure the `filterSecurityPublishAuthorizationSuccess` property on `FilterSecurityInterceptor`, you can use the following:
 | |
| 
 | |
| [source,java]
 | |
| ----
 | |
| @Bean
 | |
| public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
 | |
| 	http
 | |
| 		.authorizeHttpRequests(authorize -> authorize
 | |
| 			.anyRequest().authenticated()
 | |
| 			.withObjectPostProcessor(new ObjectPostProcessor<FilterSecurityInterceptor>() {
 | |
| 				public <O extends FilterSecurityInterceptor> O postProcess(
 | |
| 						O fsi) {
 | |
| 					fsi.setPublishAuthorizationSuccess(true);
 | |
| 					return fsi;
 | |
| 				}
 | |
| 			})
 | |
| 		);
 | |
| 	return http.build();
 | |
| }
 | |
| ----
 |