1、Nginx与Zuul的区别

相同点：Zuul和Nginx都可以实现负载均衡、反向代理（隐藏真实ip地址），过滤请求，实现网关的效果

不同点：Nginx--c语言开发

               Zuul--java语言开发

Zuul负载均衡实现：采用ribbon+eureka实现本地负载均衡

Nginx负载均衡实现：采用服务器实现负载均衡

 

Nginx相比zuul功能会更加强大，因为Nginx整合一些脚本语言（Nginx+lua）

Nginx适合于服务器端负载均衡

Zuul适合微服务中实现网关

Zuul 因为是java 写的，所以框架设计的更容易些

 

2,

,

 

zuul,projectA,projectB 全都要注册到注册中心eureka上，让eureka 来管控： 

 

step1: 简历eureka 服务

server:  port: 8100eureka:  instance:    hostname: server1  client:    serviceUrl:          defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/    register-with-eureka: false    fetch-registry: false

启动类：

package com.aiyuesheng;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;@SpringBootApplication@EnableEurekaServerpublic class EurekaApplication {    public static void main(final String[] args) {        SpringApplication.run(EurekaApplication.class, args);    }}

step2: projectA

server:  port: 8000spring:    application:        name: projectAeureka:  client:    service-url:           defaultZone: http://localhost:8100/eureka

启动类：

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

controller:

@RestControllerpublic class Index {    @RequestMapping("/")    public String index() {        return "PROJECTA";    }}

step2: projectB

server:  port: 8001spring:    application:        name: projectBeureka:  client:    service-url:           defaultZone: http://localhost:8100/eureka

启动类：

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

controller:

@RestControllerpublic class Index {    @RequestMapping("/")    public String index() {        return "PROJECTB";    }}

step4: zuul 配置网关

eureka:  client:    serviceUrl:      defaultZone: http://localhost:8100/eureka/server:  port: 8080spring:  application:    name: service-zuulzuul:  routes:    projectA:      path: /projectA/**      serviceId: projectA    projectB:      path: /projectB/**      serviceId: projectBzuul:  routes:    api-a:      path: /api-a/**      serviceId: itmayiedu_a    api-b:      path: /api-b/**      serviceId: itmayiedu_b

启动类：

import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.client.discovery.EnableDiscoveryClient;import org.springframework.cloud.netflix.zuul.EnableZuulProxy;import org.springframework.context.annotation.Bean;@EnableZuulProxy@SpringBootApplication@EnableDiscoveryClientpublic class ZuulApplication  {    public static void main(String[] args) {        SpringApplication.run(ZuulApplication.class, args);    }//    @Bean//    public TokenFilter accessFilter() {//        return new TokenFilter();//    }}

 

先启动eureka 注册中心，再启动其他三个服务，启动之后，可以web 页面查看服务是否注册上去：

 

我就可以通过网关配置的routes 

routes:    projectA:      path: /projectA/**      serviceId: projectA    projectB:      path: /projectB/**      serviceId: projectB

 

127.0.0.1/projectA  就自动跳到A项目

127.0.0.1/projectB  就自动跳到B项目