重庆建设行业信息网站网建公司

链接

第一章：Nacos、LoadBalancer、GateWay、Ribbon集成之Nacos部署

第二章：Nacos、LoadBalancer、GateWay、Ribbon集成之负载均衡LoadBalancer部署

第三章：Nacos、LoadBalancer、GateWay、Ribbon集成之网关Gateway部署

第四章：Nacos、LoadBalancer、GateWay、Ribbon集成之跨服务调用ribbon

查看源码

正文

接前章

新建二级模块，命名为MyGateways,这里存放的是所有的网关接口，比如说app、小程序

• 删除src目录，pom.xml默认
• 在MyGateways模块下新建一个子模块，这里命名为mygateway-app。
  

代码如下，引入gateway、loadbalancer 、nacos、spring boot

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>com.que5</groupId><artifactId>MyCloud</artifactId><version>1.0-SNAPSHOT</version><relativePath>../../pom.xml</relativePath></parent><artifactId>mygateway-app</artifactId><name>Archetype - mygateway-app</name><url>http://maven.apache.org</url><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-gateway</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-loadbalancer</artifactId></dependency></dependencies><build><finalName>${project.artifactId}</finalName><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><executions><execution><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins></build>
</project>

gateway配置文件

1. 新建application.yml，这里预留websocket配置项，以后再讨论websocket集群

application:name: mygateway-app
app:site:ip: nacos服务器ip
server:port: 8080servlet:encoding:charset: UTF-8enabled: trueforce: true
spring:application:name: mygateway-appcloud:loadbalancer:nacos:enabled: truegateway:discovery:locator:enabled: truelower-case-service-id: truehttpclient:connect-timeout: 50000response-timeout: 50000routes:- id: myapp1uri: lb://myapp1predicates:- Path=/myapp1/**filters:- StripPrefix=1- id: myapp2uri: lb://myapp2predicates:- Path=/myapp2/**filters:- StripPrefix=1- id: websocketuri: grayLb://websocketpredicates:- Path=/websocket/**filters:- StripPrefix=1nacos:config:import-check:enabled: falseserver-addr: ${app.site.ip}:8848file-extension: yamldiscovery:group: QUE5server-addr: ${app.site.ip}:8848username: nacospassword: nacos密码
management:endpoints:web:exposure:include: "*"
security:ignore:whites:- /websocket/websocket/**

2. 新建启动类MyGatewayAppApplication.java

package com.que5;
import org.springframework.boot.Banner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.Environment;/*** @author zhouminghua* @version 1.0* @date 2025-2-15 09:28:57* @description 启动类* @site https://www.que5.com*/
@SpringBootApplication
@EnableDiscoveryClient
public class MyGatewayAppApplication {public static void main(String[] args) {SpringApplication app = new SpringApplication(MyGatewayAppApplication.class);ConfigurableApplicationContext configurableApplicationContext = app.run(args);Environment env = configurableApplicationContext.getEnvironment();app.setBannerMode(Banner.Mode.CONSOLE);}
}

运行ApiGatewayApplication.java

-打开nacos查看服务列表，成功，详情可以查看具体的端口信息等~

-打开浏览器，输入http://localhost:8080/myapp1/cloud/hello 、 http://localhost:8080/myapp2/cloud/hello

负载均衡测试

• 微服务的核心是什么，比如说同时运行几个微服务myapp1,访问网关gateway会按照策略,访问其中一个myapp1，减少单个服务部署压力，从而达到负载均衡的作用，不再赘述。
• 这里以myapp1为例，先启动MyApp1Application.java，idea编辑器不能运行两个同名,所以可以复制新建MyApp1Application2.java启动：如图
  • 复制新建MyApp1Application2.java，删除里面的RestTemplate配置
    
  • 右键MyApp1Application2.java -更多运行、调试-修改运行配置

- 填写端口

--server.port=7003

• 查看nacos服务列表，两个实例
  
  • 查看详情，两个端口都已注册，意味着同一个微服务项目部署了两个。
    
  • 接着打开浏览器，访问http://localhost:8080/myapp1/cloud/hello，查看会发现返回端口有变化，成功！
    
    

结语： 网关的作用类似nginx路由，只不过是根据服务名来发现、注册、调用。