org.springframework.security.authentication.AuthenticationProvider#authenticate ( )源码实例Demo

@Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
	Class<? extends Authentication> toTest = authentication.getClass();
	Authentication result = null;
	for (AuthenticationProvider provider : providers) {
		if (!provider.supports(toTest)) {
			continue;
		}
		// 调用认证提供者进行认证，如果 result 不为 null ,说明认证通过
		result = provider.authenticate(authentication);
		if (result != null) {
			break;
		}
	}
	if (result == null) {
		throw new ProviderNotFoundException("ProviderManager.providerNotFound");
	}
	return result;
}
 

@Test
public void arbitraryCasedNameReturnsValidAuthentication() {
  AuthenticationProvider provider = createProvider();
  Authentication authentication = provider.authenticate(createAuthenticationTokenWithUserAndPw("AdMiN", "adm1n"));
  Assert.assertNotNull(authentication);
}
 

@Test
public void validPasswordReturnsValidAuthentication() {
  AuthenticationProvider provider = createProvider();
  Authentication authentication = provider.authenticate(createAuthenticationTokenWithUserAndPw("admin", "adm1n"));
  Assert.assertNotNull(authentication);
}
 

@Test(expected = BadCredentialsException.class)
public void invalidPasswordRaises() {
  AuthenticationProvider provider = createProvider();
  provider.authenticate(createAuthenticationTokenWithUserAndPw("admin", "admin"));
}
 

@Test(expected = BadCredentialsException.class)
public void invalidUserRaises() {
  AuthenticationProvider provider = createProvider();
  provider.authenticate(createAuthenticationTokenWithUserAndPw("admon", "adm1n"));
}