走进Spring Cloud之三 eureka Producer（服务提供者）（Greenwich版本）

秒速五厘米 2022-04-18 04:58 132阅读 0赞

### 走进Spring Cloud之三 eureka Producer（Greenwich版本） ###

*  service-producer(eureka client)
 *   *  新建moudel(service-producer)
     *  pom.xml
     *  application.yml
     *  ServiceProducerApplication.java
     *  ProducerController.java

# service-producer(eureka client) #

前面我们已经成功的创建了集群版的注册中心，接下来我们就可以把我们的服务注册到我们集群注册中心提供给消费者使用。

## 新建moudel(service-producer) ##

## pom.xml ##

修改pom.xml添加eureka-client依赖

<?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">
        <parent>
            <artifactId>scexample</artifactId>
            <groupId>com.pubutech</groupId>
            <version>0.0.1-SNAPSHOT</version>
        </parent>
        <modelVersion>4.0.0</modelVersion>
    
        <artifactId>service-producer</artifactId>
        <packaging>jar</packaging>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </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>

## application.yml ##

resource目录下新建application.yml配置文件，配置一下信息：

server:
      port: 8090
    
    spring:
      application:
        name: service-producer
    
    eureka:
      client:
        service-url:
          #设置与Eureka Server交互的地址，查询服务和注册服务都需要依赖这个地址。默认是http://localhost:8761/eureka ；多个地址可使用 , 分隔。
          defaultZone: http://localhost:8761/eureka/,http://localhost:8762/eureka/,http://localhost:8763/eureka/

## ServiceProducerApplication.java ##

新建ServiceProducerApplication(SpringBoot Application)

@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class})
    @EnableDiscoveryClient
    public class ServiceProducerApplication{ 
    
        public static void main(String[] args) { 
            SpringApplication.run(ServiceProducerApplication.class, args);
        }
    
    }

添加@EnableDiscoveryClient注解后，项目就具有了服务注册的功能。启动工程后，就可以在注册中心的页面看到SERVICE-PRODUCER服务。

## ProducerController.java ##

接下来定义我们可以提供的服务，新建ProducerController.java

@RestController
    public class ProducerController { 
    
        @RequestMapping("/hello")
        public String hello(@RequestParam String name) { 
            return "hello "+name+"，this is new world";
        }
    
    }

启动service-producer  
再次访问 localhost:8761  
![service\_producer][service_producer]

[GitHub源代码][GitHub]

[service_producer]: /images/20220418/d019ae2ab7354d849994f5bb42035192.png
[GitHub]: https://github.com/Jaysong2012/scexample