SpringCould总结 | 第三篇服务负载均衡ribbon

古城微笑少年丶 2022-05-21 00:48 125阅读 0赞

//1.工程结构

![70][]

//2.pom文件

<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/xsd/maven-4.0.0.xsd">
    	<modelVersion>4.0.0</modelVersion>
    
    	<groupId>com.spc.ribbon.server</groupId>
    	<artifactId>spc-ribbon-server</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    	<packaging>jar</packaging>
    
    	<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>1.5.8.RELEASE</version>
    		<relativePath />
    	</parent>
    
    	<name>eurake-server</name>
    	<url>http://maven.apache.org</url>
    
    	<properties>
    		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    		<java.version>1.8</java.version>
    		<spring-cloud.version>Edgware.RELEASE</spring-cloud.version>
    	</properties>
    
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-eureka-server</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-ribbon</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>
    	</dependencies>
    
    	<dependencyManagement>
    		<dependencies>
    			<dependency>
    				<groupId>org.springframework.cloud</groupId>
    				<artifactId>spring-cloud-dependencies</artifactId>
    				<version>${spring-cloud.version}</version>
    				<type>pom</type>
    				<scope>import</scope>
    			</dependency>
    		</dependencies>
    	</dependencyManagement>
    
    	<build>
    		<plugins>
    			<plugin>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-maven-plugin</artifactId>
    			</plugin>
    		</plugins>
    	</build>
    </project>

//3.配置文件

spring.application.name=spc-ribbon-server
    server.port=2000
    
    eureka.client.service-url.defaultZone=http://localhost:1000/eureka/
    
    #eureka.instance.preferIpAddress=true
    #eureka.instance.instance-id=${spring.cloud.client.ipAddress}:${server.port}

//服务类

package com.spc.ribbon.server.spc_ribbon_server;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    import org.springframework.web.client.RestTemplate;
    
    @Service
    public class AppService {
    
        @Autowired
        RestTemplate restTemplate;
    
        public String queryOrderStatusById(String orderId) {
            return restTemplate.getForObject("http://SPC-SERVICE-ORDER/queryOrderStatusById?orderId="+orderId,String.class);
        }
        
        public String queryWlInfoByOrderId(String orderId) {
          //return restTemplate.getForObject("http://xxx/xxx?xxx="+xxx,String.class);
        	return ":[订单-商品-已发货]";
        }
        
        
    
    }

package com.spc.ribbon.server.spc_ribbon_server;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.client.loadbalancer.LoadBalanced;
    import org.springframework.context.annotation.Bean;
    import org.springframework.web.client.RestTemplate;
    
    @SpringBootApplication
    @EnableDiscoveryClient
    public class RibbonServer {
    
        public static void main(String[] args) {
            SpringApplication.run(RibbonServer.class, args);
        }
    
        @Bean
        @LoadBalanced
        RestTemplate restTemplate() {
            return new RestTemplate();
        }
    
    }

package com.spc.ribbon.server.spc_ribbon_server;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class AppControler {
    
        @Autowired
        private AppService appService;
        
        /**
         * 根据订单号查询订单状态查询物流信息
         * @param orderId
         * @return
         */
        @RequestMapping(value = "/queryOrderStatusAndWlInfoByOrderId")
        public String queryOrderStatusAndWlInfoByOrderId(@RequestParam String orderId){
            /**
             * 查询订单状态 
             */
        	String orderInfo =  appService.queryOrderStatusById(orderId);
        	/**
        	 * 查询物流信息
        	 */
        	String wlInfo =  appService.queryWlInfoByOrderId(orderId);
        	
            return orderInfo+wlInfo;
        }
    
    
    }

//运行结果

1.启动eureka注册中心 端口1000

2.注册服务到eureka  spc-service-order 启动3001服务  修改配置文件端口3002然后在启动一次服务

3.启动ribbon使用appController调用spc-service-order服务

![70 1][]

//启动的两个服务已经注册到eureka

//![70 2][]

//刷新查看负载均衡效果

![70 3][]

//服务均衡ribbon已负载ok

[70]: /images/20220521/e38d48f4d2c34d73b74b6a26801dc6df.png
[70 1]: /images/20220521/9060993db2a54e5b987a814911911010.png
[70 2]: /images/20220521/848e6964c3094c9f8ee47bf075a1f7f9.png
[70 3]: /images/20220521/ec669a3447b945628fb504aedab45bd9.png