spring cloud 微服務調用微服務未認證解決方案(Feign)

響應異常:

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

 

 當實現了用戶攜帶身份令牌訪問微服務之後,

微服務直接的訪問調用就會拋出未授權的異常,,解決方案 服務直接調用時攜帶令牌

 

 

Feign 攔截器

 

添加依賴：

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
    <version>1.4.4.RELEASE</version>
</dependency>

 

 

創建攔截器

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) {



        //攔截器
        //使用RequestContextHolder工具獲取request相關變量
        try {
            ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();

            if (attributes != null){


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

//                取出所有請求頭
                Enumeration<String> headerNames = request.getHeaderNames();
                while (headerNames.hasMoreElements()){
                    String name = headerNames.nextElement();   // key
                    String value = request.getHeader(name);   //value

                    if(name.equals("authorization")){    //auoth2 認證請求頭
                        //System.out.println("name="+name+"values="+values);
                        requestTemplate.header(name, value);

                    }
                }
            }
        }catch (Exception e){

        }


    }
}

 

 使用feign

在 springboot 啓動類中配置feign攔截器

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

 

然後就行了