SpringCould总结 | 第四篇服务负载均衡feign

忘是亡心i 2022-05-21 00:49 112阅读 0赞

//工程结构

![70][]

//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.feign.server</groupId>
    	<artifactId>spc-feign-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.cloud</groupId>
    			<artifactId>spring-cloud-starter-feign</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>

//配置文件

spring.application.name=spc-feign-server
    server.port=2500
    
    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.feign.server.spc_feign_server;
    
    import org.springframework.cloud.netflix.feign.FeignClient;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    
    @FeignClient(value = "SPC-SERVICE-ORDER")
    public interface AppService {
    	
    	@RequestMapping(value = "/queryOrderStatusById", method = RequestMethod.GET)
    	String queryOrderStatusById(@RequestParam(value = "orderId") String orderId);
    	
    }

package com.spc.feign.server.spc_feign_server;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class AppController {
    
        @Autowired
        AppService appService;
        
        @RequestMapping(value = "/queryOrderStatusById",method = RequestMethod.GET)
        public String queryOrderStatusById(@RequestParam String orderId){
            return appService.queryOrderStatusById(orderId);
        }
    }

package com.spc.feign.server.spc_feign_server;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.netflix.feign.EnableFeignClients;
    
    @SpringBootApplication
    @EnableDiscoveryClient
    @EnableFeignClients
    public class FeignServer {
    
    	public static void main(String[] args) {
    		SpringApplication.run(FeignServer.class, args);
    	}
    }

//1.启动eureka注册中心

//2.注册启动spc-service-order 3001端口启动 修改端口3002再启动一次

//3.启动feign服务

//运行结果

![70 1][]

![70 2][]

![70 3][]

[70]: /images/20220521/c2f68f6a76f549989f206244f63eb178.png
[70 1]: /images/20220521/7924f29f7e954bcbb5e1fb3153726ab8.png
[70 2]: /images/20220521/104732a6d3e246cb9ef35014b8b3e4ea.png
[70 3]: /images/20220521/c870a260054f4847bc105d1bb65c95d8.png