SpringCloud內建Nacos進行服務的注冊與發現Demo

文章目錄

• 建立服務提供者項目[demo-spring-cloud-nacos-service-provider]
• • 項目源碼位址
  • 項目結構
  • 引入jar包
  • • 父類包
    • 服務發現包和 web項目
  • 配置檔案:application.yml
  • Controller服務：NacosServiceProviderController
  • 啟動類:NacosServiceProviderApp
  • 啟動後驗證
  • • 運作啟動類檢視nacos
    • 通路服務
• 建立服務消費者項目[demo-spring-cloud-nacos-service-consumer]
• • 源碼位址
  • 項目結構
  • 引入jar包
  • • 父類包
    • 服務發現包和 web項目
    • 涉及到用戶端負載的開啟 @LoadBalanced
  • Controller服務：NacosServiceProviderController
  • 啟動類:NacosServiceConsumerApp
  • 驗證
  • • nacos用戶端
    • 從consumer去調用provider

建立服務提供者項目[demo-spring-cloud-nacos-service-provider]

項目源碼位址

https://gitee.com/gaoxinfu_admin/demo-spring-cloud/tree/master/demo-spring-cloud-nacos-service-provider

項目結構

引入jar包

父類包

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
           

服務發現包和 web項目

需要提供給外部服務的調用，是以需要引用web包

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
    </dependencies>
           

配置檔案:application.yml

主要配置端口，項目名稱，nacos位址

server:
  port: 8079
spring:
  application:
    name: nacos-service-provider
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
           

Controller服務：NacosServiceProviderController

package com.gaoxinfu.demo.spring.cloud;

import org.springframework.web.bind.annotation.*;

/**
 * @Description:
 * @Author: gaoxinfu
 * @Date: 2020-10-19 17:33
 */
@RestController
public class NacosServiceProviderController {

    @RequestMapping(value= "/findName/{name}",method = RequestMethod.GET)
    public String findName(@PathVariable String name){
        return "Nacos Service Provider:歡迎 "+name+" 通路";
    }
}
           

啟動類:NacosServiceProviderApp

package com.gaoxinfu.demo.spring.cloud;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

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

啟動後驗證

運作啟動類檢視nacos

通路服務

http://127.0.0.1:8079/findName/gaoxinfu

綜上，服務端已經能夠正常通路，并注冊到nacos上
           

建立服務消費者項目[demo-spring-cloud-nacos-service-consumer]

源碼位址

https://gitee.com/gaoxinfu_admin/demo-spring-cloud/tree/master/demo-spring-cloud-nacos-service-consumer

項目結構

引入jar包

父類包

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
           

服務發現包和 web項目

需要提供給外部服務的調用，是以需要引用web包

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
    </dependencies>
           

涉及到用戶端負載的開啟 @LoadBalanced

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

           

Controller服務：NacosServiceProviderController

package com.gaoxinfu.demo.spring.cloud;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

/**
 * @Description:
 * @Author: gaoxinfu
 * @Date: 2020-10-20 10:17
 */
@RestController
public class NacosServiceConsumerContoller {


    @Resource
    private RestTemplate restTemplate;

    @GetMapping("/findName/{name}")
    public String findName(@PathVariable String name){
        return restTemplate.getForObject("http://nacos-service-provider/findName/"+name,String.class);
    }
}

           

啟動類:NacosServiceConsumerApp

package com.gaoxinfu.demo.spring.cloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

/**
 *
 */
@SpringBootApplication
@EnableDiscoveryClient
public class NacosServiceConsumerApp {


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

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

           

驗證

nacos用戶端

從consumer去調用provider

http://127.0.0.1:8080/findName/gaoxinfu