问题
How can I define a custom Authentication provider by using Spring Security with Java Configurations? I would like to perform a login checking credentials on my own database.
回答1:
The following does what you need (CustomAuthenticationProvider is your implementation which needs to be managed by Spring)
@Configuration
@EnableWebMvcSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private CustomAuthenticationProvider customAuthenticationProvider;
@Override
protected void configure(HttpSecurity http) throws Exception {
/**
* Do your stuff here
*/
}
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.authenticationProvider(customAuthenticationProvider);
}
}
回答2:
As shown on baeldung.com, define your authentication provider as follow:
@Component
public class CustomAuthenticationProvider implements AuthenticationProvider {
@Override
public Authentication authenticate(Authentication authentication)
throws AuthenticationException {
String name = authentication.getName();
String password = authentication.getCredentials().toString();
if (shouldAuthenticateAgainstThirdPartySystem(username, password)) {
// use the credentials
// and authenticate against the third-party system
return new UsernamePasswordAuthenticationToken(
name, password, new ArrayList<>());
} else {
return null;
}
}
@Override
public boolean supports(Class<?> authentication) {
return authentication.equals(
UsernamePasswordAuthenticationToken.class);
}
}
and following code is corresponding java config:
@Configuration
@EnableWebSecurity
@ComponentScan("org.project.security")
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private CustomAuthenticationProvider authProvider;
@Override
protected void configure(
AuthenticationManagerBuilder auth) throws Exception {
auth.authenticationProvider(authProvider);
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().anyRequest().authenticated()
.and()
.httpBasic();
}
}
来源：https://stackoverflow.com/questions/22606751/custom-authentication-provider-with-spring-security-and-java-config