简介

Ribbon是一个负载均衡客户端，可以很好的控制htt和tcp的一些行为。

使用Ribbon构建服务消费者

新建boot项目时，选择：
pom.xml文件内容：

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.alex</groupId>
    <artifactId>eureka_consumer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>eureka_consumer</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </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>

启动类中添加@EnableEurekaClient，@EnableDiscoveryClient

@SpringBootApplication
@EnableEurekaClient
@EnableDiscoveryClient
public class EurekaConsumerApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaConsumerApplication.class, args);
    }

}

在application.yml中添加以下配置：

server:
  port: 9002
spring:
  application:
    name: hello-consumer
eureka:
  client:
    service-url:
      defaultZone: http://localhost:9000/eureka

新建controller

@RestController
@Configuration
public class HelloController {

    @Bean
    @LoadBalanced
    RestTemplate getRestTemplate(){
        return new RestTemplate();
    }

    @GetMapping("/hi")
    public String sayHi(){
        RestTemplate restTemplate = getRestTemplate();
        return restTemplate.getForObject("http://hello-server-provider/hi",String.class); //hello-server-provider为服务名，hi为接口地址
    }
}

之后消费者可以调用提供者提供的服务

来源：CSDN

作者：一只小P熊

链接：https://blog.csdn.net/solo_jm/article/details/103962511

标签

resttemplate

Spring Cloud Ribbon

目录

简介

使用Ribbon构建服务消费者