对用户进行身份验证的最常见方法之一是验证用户名和密码。 Spring Security 为使用用户名和密码进行身份验证提供了全面的支持。Spring中文文档

您可以使用以下命令配置用户名和密码身份验证:Spring中文文档

简单用户名/密码示例
@Configuration
@EnableWebSecurity
public class SecurityConfig {

	@Bean
	public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
		http
			.authorizeHttpRequests((authorize) -> authorize
				.anyRequest().authenticated()
			)
			.httpBasic(Customizer.withDefaults())
			.formLogin(Customizer.withDefaults());

		return http.build();
	}

	@Bean
	public UserDetailsService userDetailsService() {
		UserDetails userDetails = User.withDefaultPasswordEncoder()
			.username("user")
			.password("password")
			.roles("USER")
			.build();

		return new InMemoryUserDetailsManager(userDetails);
	}

}
<http>
	<intercept-url pattern="/**" access="authenticated"/>
	<form-login />
	<http-basic />

	<user-service>
		<user name="user"
			password="{noop}password"
			authorities="ROLE_USER" />
	</user-service>
</http>
import org.springframework.security.config.annotation.web.invoke

@Configuration
@EnableWebSecurity
class SecurityConfig {

	@Bean
	fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
		http {
			authorizeHttpRequests {
				authorize(anyRequest, authenticated)
			}
			formLogin { }
			httpBasic { }
		}

		return http.build()
	}

	@Bean
	fun userDetailsService(): UserDetailsService {
		val user = User.withDefaultPasswordEncoder()
			.username("user")
			.password("password")
			.roles("USER")
			.build()

		return InMemoryUserDetailsManager(user)
	}

}

上述配置会自动将内存中的 UserDetailsService 注册到 ,将 DaoAuthenticationProvider 注册到默认的 AuthenticationManager,并启用表单登录HTTP 基本身份验证。SecurityFilterChainSpring中文文档

要了解有关用户名/密码身份验证的更多信息,请考虑以下用例:Spring中文文档

发布 BeanAuthenticationManager

一个相当常见的要求是发布一个 bean 以允许自定义身份验证,例如在 或 Spring MVC 中。 例如,您可能希望通过 REST API 而不是使用表单登录来验证用户身份。AuthenticationManager@Service@ControllerSpring中文文档

您可以使用以下配置发布此类自定义身份验证方案:AuthenticationManagerSpring中文文档

发布用于自定义身份验证的 BeanAuthenticationManager
@Configuration
@EnableWebSecurity
public class SecurityConfig {

	@Bean
	public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
		http
			.authorizeHttpRequests((authorize) -> authorize
				.requestMatchers("/login").permitAll()
				.anyRequest().authenticated()
			);

		return http.build();
	}

	@Bean
	public AuthenticationManager authenticationManager(
			UserDetailsService userDetailsService,
			PasswordEncoder passwordEncoder) {
		DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
		authenticationProvider.setUserDetailsService(userDetailsService);
		authenticationProvider.setPasswordEncoder(passwordEncoder);

		return new ProviderManager(authenticationProvider);
	}

	@Bean
	public UserDetailsService userDetailsService() {
		UserDetails userDetails = User.withDefaultPasswordEncoder()
			.username("user")
			.password("password")
			.roles("USER")
			.build();

		return new InMemoryUserDetailsManager(userDetails);
	}

	@Bean
	public PasswordEncoder passwordEncoder() {
		return PasswordEncoderFactories.createDelegatingPasswordEncoder();
	}

}
<http>
	<intercept-url pattern="/login" access="permitAll"/>
	<intercept-url pattern="/**" access="authenticated"/>

	<bean id="authenticationManager"
			class="org.springframework.security.authentication.ProviderManager">
		<constructor-arg>
			<bean class="org.springframework.security.authentication.dao.DaoAuthenticationProvider">
				<property name="userDetailsService" ref="userDetailsService" />
				<property name="passwordEncoder" ref="passwordEncoder" />
			</bean>
		</constructor-arg>
	</bean>

	<user-service id="userDetailsService">
		<user name="user"
			password="{noop}password"
			authorities="ROLE_USER" />
	</user-service>

	<bean id="passwordEncoder"
			class="org.springframework.security.crypto.factory.PasswordEncoderFactories" factory-method="createDelegatingPasswordEncoder"/>
</http>
import org.springframework.security.config.annotation.web.invoke

@Configuration
@EnableWebSecurity
class SecurityConfig {

	@Bean
	fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
		http {
			authorizeHttpRequests {
				authorize("/login", permitAll)
				authorize(anyRequest, authenticated)
			}
		}

		return http.build()
	}

	@Bean
	fun authenticationManager(
			userDetailsService: UserDetailsService,
			passwordEncoder: PasswordEncoder): AuthenticationManager {
		val authenticationProvider = DaoAuthenticationProvider()
		authenticationProvider.setUserDetailsService(userDetailsService)
		authenticationProvider.setPasswordEncoder(passwordEncoder)

		return ProviderManager(authenticationProvider)
	}

	@Bean
	fun userDetailsService(): UserDetailsService {
		val user = User.withDefaultPasswordEncoder()
			.username("user")
			.password("password")
			.roles("USER")
			.build()

		return InMemoryUserDetailsManager(user)
	}

	@Bean
	fun passwordEncoder(): PasswordEncoder {
		return PasswordEncoderFactories.createDelegatingPasswordEncoder()
	}

}

使用上述配置后,您可以创建使用如下方式的配置:@RestControllerAuthenticationManagerSpring中文文档

创建身份验证@RestController
@RestController
public class LoginController {

	private final AuthenticationManager authenticationManager;

	public LoginController(AuthenticationManager authenticationManager) {
		this.authenticationManager = authenticationManager;
	}

	@PostMapping("/login")
	public ResponseEntity<Void> login(@RequestBody LoginRequest loginRequest) {
		Authentication authenticationRequest =
			UsernamePasswordAuthenticationToken.unauthenticated(loginRequest.username(), loginRequest.password());
		Authentication authenticationResponse =
			this.authenticationManager.authenticate(authenticationRequest);
		// ...
	}

	public record LoginRequest(String username, String password) {
	}

}
@RestController
class LoginController(val authenticationManager: AuthenticationManager) {

	@PostMapping("/login")
	fun login(@RequestBody loginRequest: LoginRequest): ResponseEntity<Void> {
		val authenticationRequest =
			UsernamePasswordAuthenticationToken.unauthenticated(
				loginRequest.username, loginRequest.password)
		val authenticationResponse =
			authenticationManager.authenticate(authenticationRequest)
		// ...
	}

	data class LoginRequest(val username: String, val password: String)

}

在此示例中,您负责将经过身份验证的用户保存在 如果需要。 例如,如果使用 to 持久保存请求之间的 ,则可以使用 HttpSessionSecurityContextRepositorySecurityContextRepositoryHttpSessionSecurityContextSpring中文文档

在此示例中,您负责将经过身份验证的用户保存在 如果需要。 例如,如果使用 to 持久保存请求之间的 ,则可以使用 HttpSessionSecurityContextRepositorySecurityContextRepositoryHttpSessionSecurityContextSpring中文文档

自定义AuthenticationManager

通常,Spring Security 会构建一个由用户名/密码身份验证组成的内部组件。 在某些情况下,可能仍需要自定义 Spring Security 使用的实例。 例如,您可能需要简单地为缓存的用户禁用凭据擦除AuthenticationManagerDaoAuthenticationProviderAuthenticationManagerSpring中文文档

推荐的方法是简单地发布你自己的 bean,Spring Security 将使用它。 您可以使用以下配置发布:AuthenticationManagerAuthenticationManagerSpring中文文档

发布 Bean for Spring SecurityAuthenticationManager
@Configuration
@EnableWebSecurity
public class SecurityConfig {

	@Bean
	public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
		http
			.authorizeHttpRequests((authorize) -> authorize
				.requestMatchers("/login").permitAll()
				.anyRequest().authenticated()
			)
			.httpBasic(Customizer.withDefaults())
			.formLogin(Customizer.withDefaults());

		return http.build();
	}

	@Bean
	public AuthenticationManager authenticationManager(
			UserDetailsService userDetailsService,
			PasswordEncoder passwordEncoder) {
		DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
		authenticationProvider.setUserDetailsService(userDetailsService);
		authenticationProvider.setPasswordEncoder(passwordEncoder);

		ProviderManager providerManager = new ProviderManager(authenticationProvider);
		providerManager.setEraseCredentialsAfterAuthentication(false);

		return providerManager;
	}

	@Bean
	public UserDetailsService userDetailsService() {
		UserDetails userDetails = User.withDefaultPasswordEncoder()
			.username("user")
			.password("password")
			.roles("USER")
			.build();

		return new InMemoryUserDetailsManager(userDetails);
	}

	@Bean
	public PasswordEncoder passwordEncoder() {
		return PasswordEncoderFactories.createDelegatingPasswordEncoder();
	}

}
<http>
	<intercept-url pattern="/login" access="permitAll"/>
	<intercept-url pattern="/**" access="authenticated"/>
	<form-login />
	<http-basic />

	<bean id="authenticationManager"
			class="org.springframework.security.authentication.ProviderManager">
		<constructor-arg>
			<bean class="org.springframework.security.authentication.dao.DaoAuthenticationProvider">
				<property name="userDetailsService" ref="userDetailsService" />
				<property name="passwordEncoder" ref="passwordEncoder" />
			</bean>
		</constructor-arg>
	</bean>

	<user-service id="userDetailsService">
		<user name="user"
			password="{noop}password"
			authorities="ROLE_USER" />
	</user-service>

	<bean id="passwordEncoder"
			class="org.springframework.security.crypto.factory.PasswordEncoderFactories" factory-method="createDelegatingPasswordEncoder"/>
</http>
import org.springframework.security.config.annotation.web.invoke

@Configuration
@EnableWebSecurity
class SecurityConfig {

	@Bean
	fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
		http {
			authorizeHttpRequests {
				authorize("/login", permitAll)
				authorize(anyRequest, authenticated)
			}
			formLogin { }
			httpBasic { }
		}

		return http.build()
	}

	@Bean
	fun authenticationManager(
			userDetailsService: UserDetailsService,
			passwordEncoder: PasswordEncoder): AuthenticationManager {
		val authenticationProvider = DaoAuthenticationProvider()
		authenticationProvider.setUserDetailsService(userDetailsService)
		authenticationProvider.setPasswordEncoder(passwordEncoder)

		val providerManager = ProviderManager(authenticationProvider)
		providerManager.eraseCredentialsAfterAuthentication = false

		return providerManager
	}

	@Bean
	fun userDetailsService(): UserDetailsService {
		val user = User.withDefaultPasswordEncoder()
			.username("user")
			.password("password")
			.roles("USER")
			.build()

		return InMemoryUserDetailsManager(user)
	}

	@Bean
	fun passwordEncoder(): PasswordEncoder {
		return PasswordEncoderFactories.createDelegatingPasswordEncoder()
	}

}

或者,您可以利用用于构建 Spring Security 的全局变量作为 bean 发布的事实。 您可以按如下方式配置构建器:AuthenticationManagerBuilderAuthenticationManagerSpring中文文档

配置全局AuthenticationManagerBuilder
@Configuration
@EnableWebSecurity
public class SecurityConfig {

	@Bean
	public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
		// ...
		return http.build();
	}

	@Bean
	public UserDetailsService userDetailsService() {
		// Return a UserDetailsService that caches users
		// ...
	}

	@Autowired
	public void configure(AuthenticationManagerBuilder builder) {
		builder.eraseCredentials(false);
	}

}
import org.springframework.security.config.annotation.web.invoke

@Configuration
@EnableWebSecurity
class SecurityConfig {

	@Bean
	fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
		// ...
		return http.build()
	}

	@Bean
	fun userDetailsService(): UserDetailsService {
		// Return a UserDetailsService that caches users
		// ...
	}

	@Autowired
	fun configure(builder: AuthenticationManagerBuilder) {
		builder.eraseCredentials(false)
	}

}