Spring Cloud Alibaba（1）Spring Cloud搭建nacos最新版微服务体系快速入门带源码

系统管理员 2022-03-08 05:56 240阅读 0赞

**目录**

1. 提供者-注册中心-消费者

2. 项目介绍：

源码地址：

3. 搭建nacos

4.搭建nacos-provider提供者

5.搭建nacos-consumer消费者

--------------------

## 1. **提供者-注册中心-消费者** ##

这是快速搭建spring cloud alibaba nacos0.9微服务体系的提供者-注册中心-消费者流程，开箱即用。

## 2. 项目介绍： ##

使用技术有spring cloud alibaba nacos0.9+spring cloud feign+spring boot2.x。

### **源码地址**： ###

[https://gitee.com/acelee723/acelee-SpringCloudAlibaba-nacosDemo][https_gitee.com_acelee723_acelee-SpringCloudAlibaba-nacosDemo]

nacos0.8.0           服务注册中心

nacos-provider     服务提供者

nacos-consumer  服务消费者

--------------------

## **3. 搭建nacos** ##

**什么是Nacos？参考官方文档**[https://nacos.io/zh-cn/docs/what-is-nacos.html][https_nacos.io_zh-cn_docs_what-is-nacos.html]

1)从官网[https://github.com/alibaba/nacos/releases][https_github.com_alibaba_nacos_releases]下载nacos-server-0.9.0.zip或者0.8.0.zip，我这里用的8。下载完毕后解压，打开bin目录下，双击startup.cmd启动，访问[http://127.0.0.1:8848/nacos][http_127.0.0.1_8848_nacos]可以看到nacos登陆页面，默认账户名和密码都是nacos

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70 1][]

--------------------

## **4.搭建nacos-provider提供者** ##

1）pom添加依赖，spring boot版本2.x，spring cloud版本Greenwich.RELEASE（最新版本查看[https://spring.io/projects/spring-cloud][https_spring.io_projects_spring-cloud]）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70 2][]

<?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>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.3.RELEASE</version>
            <relativePath/> 
        </parent>
        <artifactId>nacos-provider</artifactId>
        <name>nacos-provider</name>
        <description>Demo project for nacos-provider</description>
    
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>
        </properties>
    
        <dependencies>
            <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>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
                <version>0.2.1.RELEASE</version>
            </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>

2）application.yml配置文件增加属性，server-addr对应的是nacos启动的地址和端口。

server:
      port: 8888
    spring:
      application:
        name: nacos-provider
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848

3） 启动类增加@EnableDiscoveryClient

package com.acelee.provider;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    
    @SpringBootApplication
    @EnableDiscoveryClient
    public class NacosProviderApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(NacosProviderApplication.class, args);
        }
    
    }

4）增加controller包，下面新增HelloController类。

package com.acelee.provider.controller;
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    /**
     * @Auther: Ace Lee
     * @Date: 2019/3/14 14:14
     */
    @RestController
    public class HelloController {
    
        @RequestMapping("/hello")
        public String hello(@RequestParam("name")String name){
            return "Hello "+name+", this is nacos-provider message.";
        }
    }

5）启动nacos-provider，可以看到nacos服务列表多了一个服务

![20190314150739836.png][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70 3][]

6）访问[http://localhost:8888/hello?name=acelee][http_localhost_8888_hello_name_acelee]返回：Hello acelee, this is nacos-provider message. 证明服务正常启动

![20190314151028842.png][]

--------------------

## **5.搭建nacos-consumer消费者** ##

1）pom添加依赖，spring boot版本2.1x，spring cloud版本Greenwich.RELEASE（用最新版本）

<?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>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.3.RELEASE</version>
            <relativePath/> 
        </parent>
        <artifactId>nacos-consumer</artifactId>
        <name>nacos-consumer</name>
        <description>Demo project for nacos-consumer</description>
    
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
                <version>0.2.1.RELEASE</version>
            </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>

2）application.yml配置文件增加属性

server:
      port: 8889
    spring:
      application:
        name: nacos-consumer
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848

3） 启动类增加@EnableDiscoveryClient和@EnableFeignClients

package com.acelee.consumer;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.openfeign.EnableFeignClients;
    
    @SpringBootApplication
    @EnableDiscoveryClient
    @EnableFeignClients
    public class NacosConsumerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(NacosConsumerApplication.class, args);
        }
    
    }

4）新增service包，下面新增HelloService接口

>  *  @FeignClient("")里面的值对应nacos-provider服务提供者的spring.application.name属性的值；
>  *  hello方法的路径和参数必须和nacos-provider服务提供者保持一致；

package com.acelee.consumer.service;
    
    import org.springframework.cloud.openfeign.FeignClient;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    
    /**
     * @Auther: Ace Lee
     * @Date: 2019/3/14 14:03
     */
    @FeignClient("nacos-provider")
    public interface HelloService {
    
        @RequestMapping("/hello")
        String hello(@RequestParam("name")String name);
    }

5）新增controller包，下面新增HelloController类，注入HelloService

package com.acelee.consumer.controller;
    
    import com.acelee.consumer.service.HelloService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    /**
     * @Auther: Ace Lee
     * @Date: 2019/3/14 14:05
     */
    @RestController
    public class HelloController {
    
        @Autowired
        private HelloService helloService;
    
        @RequestMapping("/hello/{name}")
        public String hello(@PathVariable String name){
            return helloService.hello(name);
        }
    
    }

6）启动consumer消费者，可以看到nacos服务列表又多了一个服务

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70 4][]

7)访问[http://localhost:8889/hello/acelee][http_localhost_8889_hello_acelee]返回：Hello acelee, this is nacos-provider message.证明消费者启动正常，且已经调用提供者服务成功。

![20190314153533104.png][]

--------------------

**欢迎关注博主博客，后期博主会持续更新[spring cloud alibaba][] 系列文章，敬请期待！       **

[https_gitee.com_acelee723_acelee-SpringCloudAlibaba-nacosDemo]: https://gitee.com/acelee723/acelee-SpringCloudAlibaba-nacosDemo
[https_nacos.io_zh-cn_docs_what-is-nacos.html]: https://nacos.io/zh-cn/docs/what-is-nacos.html
[https_github.com_alibaba_nacos_releases]: https://github.com/alibaba/nacos/releases
[http_127.0.0.1_8848_nacos]: http://127.0.0.1:8848/nacos
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70]: /images/20220308/1e7bb34b802d4829b0e9ae68fbe748f3.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70 1]: /images/20220308/93b8c66caf3f453fb1eb028f9eb3d05f.png
[https_spring.io_projects_spring-cloud]: https://spring.io/projects/spring-cloud
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70 2]: /images/20220308/99f0976af6634cff8fbfb47a772cb3be.png
[20190314150739836.png]: /images/20220308/67a9ac16279943afbda510cfd9c0bd6d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70 3]: /images/20220308/6d6ae023c5824756b532077b8b0db879.png
[http_localhost_8888_hello_name_acelee]: http://localhost:8888/hello?name=acelee
[20190314151028842.png]: /images/20220308/da8c209ddde846d6955de0dc2089fc34.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xhczcyMw_size_16_color_FFFFFF_t_70 4]: /images/20220308/30d8b1edca404425839fc379c3608037.png
[http_localhost_8889_hello_acelee]: http://localhost:8889/hello/acelee
[20190314153533104.png]: /images/20220308/bfe63f56485c4947adbbdfec6f56adfc.png
[spring cloud alibaba]: https://blog.csdn.net/las723/column/info/38747