加入依賴；

<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-zuul</artifactId>
		</dependency>

配置application.yml;

eureka:
  client:
    service-url:
      defaultZone: http://localhost:8080/eureka/
server:  
  port: 8765 
spring:
  application:
    name: service-zuul
zuul:
  routes:
    api-a:
      path: /api-member/**
      service-id: service-member
    api-b:
      path: /api-order/**
      service-id: service-order
 

建立啟動器；

@EnableZuulProxy
@EnableEurekaClient 
@SpringBootApplication
public class ZullApplication {
	public static void main(String[] args) {
		SpringApplication.run(ZullApplication.class, args);
	} 
}

根據在application.yml中的配置，將在eureka中註冊的服務包裝，攔截請求，

根據配置轉發到實際地址，解決跨域問題

zuul閘道器攔截引數：

定義一個zuulfilter:

@Component
public
 
 class MyFilter extends ZuulFilter{

    private static Logger log = LoggerFactory.getLogger(MyFilter.class);
    @Override
    public String filterType() {
        return "pre";
    }

    @Override
    public int filterOrder() {
        return 0;
    }

    @Override
    public boolean shouldFilter
 
() {
        return true;
    }

    @Override
    public Object run() {
        RequestContext ctx = RequestContext.getCurrentContext();
        HttpServletRequest request = ctx.getRequest();
        log.info(String.format("%s >>> %s", request.getMethod(), request.getRequestURL().toString()));
        Object accessToken = request.getParameter("token");
        if(accessToken == null) {
            log.warn("token is empty");
            ctx.setSendZuulResponse(false);
            ctx.setResponseStatusCode(401);
            try {
                ctx.getResponse().getWriter().write("token is empty");
            }catch (Exception e){}

            return null;
        }
        log.info("ok");
        return null;
    }
}

• pre：路由之前
• routing：路由之時
• post： 路由之後
• error：傳送錯誤呼叫
• filterOrder：過濾的順序
• shouldFilter：這裡可以寫邏輯判斷，是否要過濾，本文true,永遠過濾。
• run：過濾器的具體邏輯。可用很複雜，包括查sql，nosql去判斷該請求到底有沒有許可權訪問。

token is empty

正常顯示