故事背景

初入江湖，如何寻找一个”妹纸”呢，无从下手，只能靠着寻找哪里有妹纸的信息去下手。

准备工作

sts即可

POM.XML配置

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>acc</groupId>
    <artifactId>consumer.rest</artifactId>
    <version>1.0.1</version>
    <packaging>jar</packaging>

    <name>acc-consumer-rest</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.3.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

    <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>Dalston.SR1</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>


    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

编写application.properties配置

#注册中心的地址
eureka.client.serviceUrl.defaultZone=http://127.0.0.1:9800/eureka/
#自身服务的端口号
server.port=9833
#注册到注册中心的名称
spring.application.name=consumer-rest

编写controller

@RestController
public class RestControler {

    @Autowired
    RestServiceImpl helloService;

    @RequestMapping(value = "/restHi")
    public String Resthi(@RequestParam String name) {
        return helloService.hiService(name);
    }
}

编写service

public interface RestService {

    public String hiService(String name);
}

编写serviceImpl

@Service
public class RestServiceImpl implements RestService {

    @Autowired
    RestTemplate restTemplate;

    @Override
    public String hiService(String name) {
        return restTemplate.getForObject("http://HI-SERVICE/hi?name=" + name, String.class);
    }
}

编写启动类

@SpringBootApplication
@EnableDiscoveryClient
public class AccConsumerRestApplication {

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

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

其中@LoadBalanced帮我们实现负载均衡

运行项目，浏览器不断数据http://localhost:9833/restHi, 将会看到不同的服务提供者返回的信息。