#會(huì)員服務(wù)
server:
  port: 8082
spring:
  application:
    name: member-service    #服務(wù)名
#Eureka配置
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8761/eureka/     #注冊中心的地址

#訂單服務(wù)
server:
  port: 8081
spring:
  application:
    name: order-service   #服務(wù)名
#Eureka配置
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8761/eureka/      #注冊中心地址

#配置Zuul端口
server:
  port: 81
spring:
  application:
    name: zull-gateway-service    #服務(wù)名
#Eureka配置
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8761/eureka/    #注冊中心地址
      
# 配置網(wǎng)關(guān)反向代理，例如訪問/api-member/** 直接重定向到member-service服務(wù),實(shí)現(xiàn)路由轉(zhuǎn)發(fā)，隱藏服務(wù)的真實(shí)ip(服務(wù)都實(shí)在內(nèi)網(wǎng)中)
#zull根據(jù)服務(wù)名，去Eureka獲取服務(wù)真實(shí)地址，并通過本地轉(zhuǎn)發(fā)，而且默認(rèn)開啟Ribbon實(shí)現(xiàn)負(fù)載均衡
#默認(rèn)讀取Eureka注冊列表 默認(rèn)30秒間隔  
zuul:
 routes:
   api-a: #會(huì)員服務(wù)網(wǎng)關(guān)配置
     path: /api-member/**   #訪問只要是/api-member/ 開頭的直接轉(zhuǎn)發(fā)到member-service服務(wù)
     #服務(wù)名
     serviceId: member-service
   api-b: #訂單服務(wù)網(wǎng)關(guān)配置
     path: /api-order/**
     serviceId: order-service

package com.example.zuul.filter;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import io.micrometer.core.instrument.util.StringUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import javax.servlet.http.HttpServletRequest;
@Component
public class TokenFilter extends ZuulFilter {
	//統(tǒng)計(jì)當(dāng)前Zuul調(diào)用次數(shù)
    int count = 0;
    
	//獲取Zuul服務(wù)端口號(hào)
    @Value("${server.port}")
    private String prot;
    
    /**
     * 指定該Filter的類型
     * ERROR_TYPE = "error";
     * POST_TYPE = "post";
     * PRE_TYPE = "pre";
     * ROUTE_TYPE = "route";
     */
    @Override
    public String filterType() {
        System.out.println("filterType()...");
        return "pre";
    }
    /**
     * 指定該Filter執(zhí)行的順序（Filter從小到大執(zhí)行）
     * DEBUG_FILTER_ORDER = 1;
     * FORM_BODY_WRAPPER_FILTER_ORDER = -1;
     * PRE_DECORATION_FILTER_ORDER = 5;
     * RIBBON_ROUTING_FILTER_ORDER = 10;
     * SEND_ERROR_FILTER_ORDER = 0;
     * SEND_FORWARD_FILTER_ORDER = 500;
     * SEND_RESPONSE_FILTER_ORDER = 1000;
     * SIMPLE_HOST_ROUTING_FILTER_ORDER = 100;
     * SERVLET_30_WRAPPER_FILTER_ORDER = -2;
     * SERVLET_DETECTION_FILTER_ORDER = -3;
     */
    @Override
    public int filterOrder() {
        System.out.println("filterOrder()...");
        return 0;
    }
    /**
     * 指定需要執(zhí)行該Filter的規(guī)則
     * 返回true則執(zhí)行run()
     * 返回false則不執(zhí)行run()
     */
    @Override
    public boolean shouldFilter() {
        System.out.println("shouldFilter()...");
        return true;
    }
    /**
     * 該Filter具體的執(zhí)行活動(dòng)
     */
    @Override
    public Object run() throws ZuulException {
        // 獲取上下文
        //RequestContext currentContext = RequestContext.getCurrentContext();
        //HttpServletRequest request = currentContext.getRequest();
        //獲取userToken
       // String userToken = request.getParameter("userToken");
        //System.out.println("userToken: "+userToken);
        //if (StringUtils.isEmpty(userToken)) {
            //不會(huì)繼續(xù)執(zhí)行調(diào)用服務(wù)接口，網(wǎng)關(guān)直接響應(yīng)給客戶端
            //currentContext.setSendZuulResponse(false);
            //currentContext.setResponseStatusCode(401);
           // currentContext.setResponseBody("userToken is Null");
           // return null;
       // }else if(!userToken.equals("10010")){
           // currentContext.setSendZuulResponse(false);
            //currentContext.setResponseStatusCode(401);
            //currentContext.setResponseBody("userToken is Error");
            //return null;
        //}
        // 否則正常執(zhí)行業(yè)務(wù)邏輯，調(diào)用服務(wù).....
        System.out.println("訪問Zuul網(wǎng)關(guān)端口為："+prot +"（total："+ ( count++) +"）");
        return null;
    }
}

#配置上游服務(wù)器 集群，默認(rèn)輪詢機(jī)制
	upstream backServer{
		server 127.0.0.1:81;
		server 127.0.0.1:82;
		# 補(bǔ)充: backup表示從服務(wù)器或者叫備用服務(wù)器  只有當(dāng)主服務(wù)器（81、82端口）都不能訪問時(shí)才會(huì)訪問此（83端口）備用服務(wù)器 當(dāng)主服務(wù)器恢復(fù)正常后 則訪問主服務(wù)器
		#server 127.0.0.1:83 backup;
	}
    server {
        listen       80;
        server_name  localhost;
        #charset koi8-r;
        #access_log  logs/host.access.log  main;
        location / {
            ##root   html;
			#指定上游負(fù)載均衡服務(wù)器
			proxy_pass http://backServer/;
            index  index.html index.htm;
        }
    }

upstream backServer{
		server 127.0.0.1:81;
		server 127.0.0.1:82;
		# 補(bǔ)充: backup表示從服務(wù)器或者叫備用服務(wù)器  只有當(dāng)主服務(wù)器（81、82端口）都不能訪問時(shí)才會(huì)訪問此（83端口）備用服務(wù)器 當(dāng)主服務(wù)器恢復(fù)正常后 則訪問主服務(wù)器
		server 127.0.0.1:83 backup;
	}

upstream backServer{
		server 127.0.0.1:81;
		server 127.0.0.1:82;
		server 127.0.0.1:83 backup;
	}
	
location / {
        proxy_pass   http://backServer/;
        proxy_redirect  default;
	    proxy_connect_timeout 1;  # 超時(shí)1s則轉(zhuǎn)發(fā)到其他服務(wù)，宕機(jī)情況下也適用
	    proxy_read_timeout 1;
	    proxy_send_timeout 1;