Spring Cloud Feign OAuth2 令牌传递

创建 Feign 的配置类 

/**
 * Feign配置
 **/
@Configuration
public class FeignConfiguration {
    /**
     * 日志级别
     * @return
     */
    @Bean
    Logger.Level feignLoggerLevel() {
        return Logger.Level.FULL;
    }

    /**
     * 创建Feign请求拦截器，在发送请求前设置认证的token,各个微服务将token设置到环境变量中来达到通用
     * @return
     */
    @Bean
    public FeignBasicAuthRequestInterceptor basicAuthRequestInterceptor() {
        return new FeignBasicAuthRequestInterceptor();
    }
}

创建feign拦截器，传递令牌 

/**
 * Feign请求拦截器
 **/
public class FeignBasicAuthRequestInterceptor  implements RequestInterceptor {

    public FeignBasicAuthRequestInterceptor() {

    }

    @Override
    public void apply(RequestTemplate template) {
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        //添加token
        template.header(HttpHeaders.AUTHORIZATION, request.getHeader(HttpHeaders.AUTHORIZATION));
    }
}

将feign配置加到feign接口的注解中 

@FeignClient(name = "microservice-provider-user", configuration = FeignConfiguration.class)

原文：https://blog.csdn.net/nnsword/article/details/107413704