使用Spring Cloud搭建服务注册中心（二）

接上篇

服务提供

现在我们搭建一个简单的服务，访问 /hello 并传入参数 返回 “hello xxx” 字符串。
先建一个boot工程添加如下依赖

    <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>Edgware.RELEASE</spring-cloud.version>
    </properties>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>

    <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>

配置文件

spring.application.name=spring-cloud-producer
server.port=8085
eureka.client.serviceUrl.defaultZone=http://localhost:8080/eureka/

spring.application.name 服务名
server.port 该应用端口号
eureka.client.serviceUrl.defaultZone 服务中心地址
在启动类前加上@EnableDiscoveryClient注解

@SpringBootApplication
@EnableDiscoveryClient
public class ProducerApplication {

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

现在我们实现服务。

@RestController
public class HelloController {

    @GetMapping("/hello")
    public Object hello(@RequestParam String name){
        return "hello " + name;
    }
}

服务调用

先建一个Boot项目，依赖和服务提供者相同。
配置文件

spring.application.name=spring-cloud-consumer
server.port=8085
eureka.client.serviceUrl.defaultZone=http://localhost:8000/eureka/

在启动类前加上 @EnableDiscoveryClient 和@EnableFeignClients注解

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class ConsumerApplication {

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

调用hello的接口

@FeignClient(name = "spring-cloud-producer")
public interface HelloRemote {

    @GetMapping("/hello")
    String hello(@RequestParam(name = "name") String name);
}

控制器

@RestController
public class HelloController {

    @Autowired
    HelloRemote helloRemote;

    @GetMapping("/hello/{name}")
    public Object hello(@PathVariable(name = "name") String name){
        return helloRemote.hello(name);
    }
}