如何通过feign客户端使用受基本身份验证保护的Restful web服务

// 1. 配置Feign客户端
@Configuration
public class FeignClientConfig {
    @Value("${service.url}")
    private String serviceUrl;

    @Bean
    public Feign.Builder feignBuilder() {
        return Feign.builder()
                .encoder(new JacksonEncoder())
                .decoder(new JacksonDecoder())
                .options(new Request.Options(5000, 5000))
                .retryer(Retryer.NEVER_RETRY)
                .target(FeignClient.class, serviceUrl);
    }
}

// 2. 创建Feign接口
@FeignClient(name = "restful-service")
public interface FeignClient {
    @RequestMapping(method = RequestMethod.GET, value = "/api/resource")
    @Headers("Content-Type: application/json")
    ResponseEntity<String> getResource();
}

// 3. 配置基本身份验证
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .anyRequest().authenticated()
                .and()
                .httpBasic();
    }
}

// 4. 创建Feign客户端
@Service
public class FeignService {
    @Autowired
    private FeignClient feignClient;

    public String getResource() {
        ResponseEntity<String> response = feignClient.getResource();
        return response.getBody();
    }
}

// 5. 调用受保护的Restful服务
@RestController
public class ResourceController {
    @Autowired
    private FeignService feignService;

    @GetMapping("/resource")
    public String getResource() {
        return feignService.getResource();
    }
}