服务注册
[TOC]
1、引入依赖
父 pom 依赖
<!--spring cloud alibaba 2.1.0.RELEASE-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>2.1.0.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
子 pom 依赖
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
2、配置文件
server:
port: 9001
spring:
application:
name: nacos-payment-provider
cloud:
nacos:
discovery:
server-addr: localhost:7848
management:
endpoints:
web:
exposure:
include: '*'
3、主启动类
@SpringBootApplication
@EnableDiscoveryClient
public class AlibabaPaymentMain9001 {public static void main(String[] args) {SpringApplication.run(AlibabaPaymentMain9001.class, args);
}
}
第三部完成
打开 nacos 在服务列表即可看到注册进来的服务.
4、业务类 写一个接口供服务发现者使用
@RestController
public class PaymentController {@Value("${server.port}")
private String serverPort;
@GetMapping(value = "/payment/nacos/{id}")
public String getPayment(@PathVariable("id") Integer id) {return "nacos registery , server port: " + serverPort + "\t id: " + id;}
}
服务发现
1、引入依赖
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
2、配置文件
server:
port: 9002
spring:
application:
name: nacos-payment-consumner
cloud:
nacos:
discovery:
server-addr: localhost:7848
management:
endpoints:
web:
exposure:
include: '*'
3、主启动类
@SpringBootApplication
@EnableDiscoveryClient
public class AlibabaConsumnerMain9002 {public static void main(String[] args) {SpringApplication.run(AlibabaConsumnerMain9002.class, args);
}
}
打开 nacos 在服务列表即可看到注册进来的服务.
4、发现第一个服务 并调用第一个服务提供的接口
nacos 默认支持负载, 因为底层 nacos 包集成了 Ribbon
服务调用用的还是 RestTemplate
在第二个服务中,配置 RestTemplate
@Configuration
public class ApplicationContextConfig {
@Bean
@LoadBalanced
public RestTemplate getRestTemplate() {return new RestTemplate();
}
}
业务类中调用第一个服务的接口
@RestController
public class ConsumnerController {
public static final String SERVER_URL = "http://nacos-payment-provider";
@Resource
private RestTemplate restTemplate;
@GetMapping("/consumer/{id}")
public String paymentInfo(@PathVariable("id") Long id) {return restTemplate.getForObject(SERVER_URL + "/payment/nacos/" + id, String.class);
}
}
访问 http://localhost:9002/consumer/1
nacos registery , server port: 9001 id: 1
正文完