7、服务发现&服务消费者Ribbon

<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>spring-cloud</groupId>
    <artifactId>sc-eureka-client-consumer-ribbon</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>sc-eureka-client-consumer-ribbon</name>
    <url>http://maven.apache.org</url>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
    </parent>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.RELEASE</version>
                <type>pom</type>
            </dependency>

        </dependencies>
    </dependencyManagement>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <version>2.0.1.RELEASE</version>
        </dependency>

        <!-- <dependency> 
                <groupId>org.springframework.cloud</groupId> 
                <artifactId>spring-cloud-starter-ribbon</artifactId> 
                    <version>1.4.5.RELEASE</version> 
            </dependency> -->

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
            <version>2.0.1.RELEASE</version>
        </dependency>

        <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <version>2.0.4.RELEASE</version>
        </dependency>

    </dependencies>
</project>

备注：spring cloud 2.x推荐使用spring-cloud-starter-netflix-ribbon，而且spring-cloud-starter-ribbon已经被标志为过期

2、 新建类ConsumerApplication.java，spring boot启动类

package sc.consumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@SpringBootApplication
@EnableEurekaClient
public class ConsumerApplication {

    public static void main(String[] args) {

        SpringApplication.run(ConsumerApplication.class, args);

    }

}

3、 创建类RestTemplateConfig.java，该类是一个配置类，主要返回org.springframework.web.client.RestTemplate对象

package sc.consumer;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class RestTemplateConfig {

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

}

4、 创建配置文件bootstrap.yml和application.yml；具体内容参考源码

5、 其他类接口如下

6、 启动注册中心sc-eureka-server和服务提供者sc-eureka-client-provider，具体请参考《eureka注册中心单机》和《服务注册&服务提供者》
7、 启动服务消费者sc-eureka-client-consumer-ribbon，并验证是否启动成功

也可以查看日志是否有没有报错

8、 访问相关接口
查询：
http://127.0.0.1:5600/cli/user/getUser/4

列表：
http://127.0.0.1:5600/cli/user/listUser

添加：
http://127.0.0.1:5600/cli/user/addUser

更新：
http://127.0.0.1:5600/cli/user/updateUser

删除：
http://127.0.0.1:5600/cli/user/deleteUser/6

https://gitee.com/hjj520/spring-cloud-2.x/tree/master/sc-eureka-client-consumer-ribbon

7、服务发现&服务消费者Ribbon

原文：https://blog.51cto.com/13538361/2400381