spring cloud 微服务调用微服务未认证解决方案(Feign)

响应异常:

{"error":"unauthorized","error_description":"Full authentication is required to access thisresource"}

 

 当实现了用户携带身份令牌访问微服务之后,

微服务直接的访问调用就会抛出未授权的异常,,解决方案 服务直接调用时携带令牌

 

 

Feign 拦截器

 

添加依赖：

    org.springframework.cloud
    spring-cloud-starter-openfeign
    1.4.4.RELEASE

 

 

创建拦截器

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;

public class FeignClientInterceptor implements RequestInterceptor {

    @Override
    public void apply(RequestTemplate requestTemplate) {



        //拦截器
        //使用RequestContextHolder工具获取request相关变量
        try {
            ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();

            if (attributes != null){


//            取出request
                HttpServletRequest request = attributes.getRequest();

//                取出所有请求头
                Enumeration headerNames = request.getHeaderNames();
                while (headerNames.hasMoreElements()){
                    String name = headerNames.nextElement();   // key
                    String value = request.getHeader(name);   //value

                    if(name.equals("authorization")){    //auoth2 认证请求头
                        //System.out.println("name="+name+"values="+values);
                        requestTemplate.header(name, value);

                    }
                }
            }
        }catch (Exception e){

        }


    }
}

 

 使用feign

在 springboot 启动类中配置feign拦截器

//    配置feign拦截器
    @Bean
    public FeignClientInterceptor feignClientInterceptor(){
        return new FeignClientInterceptor();
    }

 

然后就行了