#yyds干货盘点# springcloud整合ribbon实现服务负载均衡

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springcloud整合ribbon实现服务负载均衡

1.项目目录：

创建项目ribbon作为父类

2.代码实现：

父类依赖

‹parent> ‹groupId>org.springframework.boot‹/groupId> ‹artifactId>spring-boot-starter-parent‹/artifactId> ‹version>2.6.2‹/version> ‹relativePath/> ‹!-- lookup parent from repository --> ‹/parent> ‹groupId>com.cxh‹/groupId> ‹artifactId>ribbon‹/artifactId> ‹version>0.0.1-SNAPSHOT‹/version> ‹name>ribbon‹/name> ‹description>Demo project for Spring Boot‹/description> ‹packaging>pom‹/packaging> ‹properties> ‹java.version>8‹/java.version> ‹spring-cloud-alibaba-dependencies.version>2021.1‹/spring-cloud-alibaba-dependencies.version> ‹spring-cloud-dependencies.version>2021.0.0‹/spring-cloud-dependencies.version> ‹/properties> ‹dependencyManagement> ‹dependencies> ‹dependency> ‹groupId>org.springframework.cloud‹/groupId> ‹artifactId>spring-cloud-dependencies‹/artifactId> ‹version>${spring-cloud-dependencies.version}‹/version> ‹type>pom‹/type> ‹scope>import‹/scope> ‹/dependency> ‹dependency> ‹groupId>com.alibaba.cloud‹/groupId> ‹artifactId>spring-cloud-alibaba-dependencies‹/artifactId> ‹version>${spring-cloud-alibaba-dependencies.version}‹/version> ‹type>pom‹/type> ‹scope>import‹/scope> ‹/dependency> ‹/dependencies> ‹/dependencyManagement>

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创建module项目ribbon-client

添加依赖

‹parent> ‹groupId>com.cxh‹/groupId> ‹artifactId>ribbon‹/artifactId> ‹version>0.0.1-SNAPSHOT‹/version> ‹relativePath/> ‹!-- lookup parent from repository --> ‹/parent> ‹groupId>com.cxh‹/groupId> ‹artifactId>ribbon-client‹/artifactId> ‹version>0.0.1-SNAPSHOT‹/version> ‹name>ribbon-client‹/name> ‹description>Demo project for Spring Boot‹/description> ‹properties> ‹java.version>1.8‹/java.version> ‹/properties> ‹dependencies> ‹dependency> ‹groupId>org.springframework.boot‹/groupId> ‹artifactId>spring-boot-starter‹/artifactId> ‹/dependency> ‹dependency> ‹groupId>org.springframework.boot‹/groupId> ‹artifactId>spring-boot-starter-test‹/artifactId> ‹scope>test‹/scope> ‹/dependency> ‹!--服务注册--> ‹dependency> ‹groupId>org.springframework.cloud‹/groupId> ‹artifactId>spring-cloud-starter-alibaba-nacos-discovery‹/artifactId> ‹version>0.2.1.RELEASE‹/version> ‹/dependency> ‹dependency> ‹groupId>org.springframework.boot‹/groupId> ‹artifactId>spring-boot-starter-web‹/artifactId> ‹/dependency> ‹dependency> ‹groupId>org.projectlombok‹/groupId> ‹artifactId>lombok‹/artifactId> ‹version>1.18.20‹/version> ‹scope>provided‹/scope> ‹/dependency> ‹/dependencies>

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yml配置

server: port: 8001spring: application: name: ribbon-client #服务名 profiles: active: dev #环境设置 cloud: nacos: discovery: server-addr: 127.0.0.1:8848 #nacos服务注册

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控制器

@Slf4j@RestControllerpublic class ClientController { @Value("${server.port}") private String port; @GetMapping("/add") public String add(Integer a, Integer b){ Integer c = a + b; log.info("端口计算：" + port + ":" + c); return "端口计算：" + port + ":" + c; }}

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启动类添加注解

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

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创建module项目ribbon-client2, 这个跟ribbon-client是一样的，只是yml配置改了个端口，其他代码一样，用于测试负载均衡

server: port: 8002spring: application: name: ribbon-client #服务名 profiles: active: dev #环境设置 cloud: nacos: discovery: server-addr: 127.0.0.1:8848 #nacos服务注册

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创建module项目ribbon-consumer

添加依赖

‹parent> ‹groupId>com.cxh‹/groupId> ‹artifactId>ribbon‹/artifactId> ‹version>0.0.1-SNAPSHOT‹/version> ‹relativePath/> ‹!-- lookup parent from repository --> ‹/parent> ‹groupId>com.cxh‹/groupId> ‹artifactId>ribbon-consumer‹/artifactId> ‹version>0.0.1-SNAPSHOT‹/version> ‹name>ribbon-consumer‹/name> ‹description>Demo project for Spring Boot‹/description> ‹properties> ‹java.version>1.8‹/java.version> ‹/properties> ‹dependencies> ‹dependency> ‹groupId>org.springframework.boot‹/groupId> ‹artifactId>spring-boot-starter‹/artifactId> ‹/dependency> ‹dependency> ‹groupId>org.springframework.boot‹/groupId> ‹artifactId>spring-boot-starter-test‹/artifactId> ‹scope>test‹/scope> ‹/dependency> ‹dependency> ‹groupId>org.springframework.cloud‹/groupId> ‹artifactId>spring-cloud-starter-netflix-ribbon‹/artifactId> ‹version>2.2.10.RELEASE‹/version> ‹/dependency> ‹!--服务注册--> ‹dependency> ‹groupId>org.springframework.cloud‹/groupId> ‹artifactId>spring-cloud-starter-alibaba-nacos-discovery‹/artifactId> ‹version>0.2.1.RELEASE‹/version> ‹/dependency> ‹dependency> ‹groupId>org.springframework.boot‹/groupId> ‹artifactId>spring-boot-starter-web‹/artifactId> ‹/dependency> ‹dependency> ‹groupId>org.projectlombok‹/groupId> ‹artifactId>lombok‹/artifactId> ‹version>1.18.20‹/version> ‹scope>provided‹/scope> ‹/dependency> ‹/dependencies>

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yml配置

server: port: 8003spring: application: name: ribbon-consumer #服务名 profiles: active: dev #环境设置 cloud: nacos: discovery: server-addr: 127.0.0.1:8848 #nacos服务注册

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控制器

@Slf4j@RestControllerpublic class ConsumerController { @Autowired RestTemplate restTemplate; @GetMapping("/add") public String add() { String result = restTemplate.getForEntity("http://ribbon-client/add?a=10&b=20", String.class).getBody(); log.info("返回结果：" + result); return result; }}

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启动类添加注解

@SpringBootApplication@EnableDiscoveryClientpublic class RibbonConsumerApplication { @Bean @LoadBalanced RestTemplate restTemplate() { return new RestTemplate(); } public static void main(String[] args) { SpringApplication.run(RibbonConsumerApplication.class, args); }}

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3.实现效果：

启动nacos后，再启动ribbon-client, ribbon-client2, ribbon-consumer项目，打开浏览器http://localhost:8003/add

第一次请求：