SpringCloud 2.x学习笔记：18、使用Nacos作为服务注册发现组件(Greenwich版本）

﹏ヽ暗。殇╰゛Y 2021-12-21 05:29 263阅读 0赞

## 1、Nacos ##

[https://github.com/alibaba/nacos/releases][https_github.com_alibaba_nacos_releases]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 1]

[http://10.17.36.27:8848/nacos][http_10.17.36.27_8848_nacos]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 3]

## 2、简单例子演示 ##

### 2.1 父级Maven项目 ###

<?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>
        <groupId>com.cntaiping.tpa</groupId>
        <artifactId>alibaba</artifactId>
        <version>1.0-SNAPSHOT</version>
        <packaging>pom</packaging>
    
        <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>Greenwich.SR1</spring-cloud.version>
        </properties>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.5.RELEASE</version>
            <relativePath/>
        </parent>
    
        <modules>
            <module>nacos-provider</module>
            <module>nacos-consumer</module>
        </modules>
    
        <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>
        </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>
                    <executions>
                        <execution>
                            <goals>
                                <goal>repackage</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    
    </project>

### 2.2 构建nacos-provider模块 ###

#### （1）pom.xml ####

#### （2）application.properties ####

server.port= 8701
    spring.application.name= nacos-provider
    spring.cloud.nacos.discovery.server-addr= 127.0.0.1:8848

#### （3）Application类 ####

package com.cntaiping.tpa.nacosprovider;
    
    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）控制器 ####

package com.cntaiping.tpa.nacosprovider.comtroller;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class HelloController {
    
        private Logger logger= LoggerFactory.getLogger(getClass());
    
        @GetMapping("/hello")
        public String hello(@RequestParam(value = "name",defaultValue = "hadron",required = false)String name){
            logger.info("响应服务消费请求....");
            return "Hello "+name;
        }
    }

### 2.3 构建nacos-consumer模块 ###

#### （1） pom.xml ####

#### （2）application.properties ####

server.port= 8702
    spring.application.name= nacos-consumer
    spring.cloud.nacos.discovery.server-addr= 127.0.0.1:8848

#### （3）Application类 ####

package com.cntaiping.tpa.nacosconsumer;
    
    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）服务消费类 ####

package com.cntaiping.tpa.nacosconsumer.service;
    
    import org.springframework.cloud.openfeign.FeignClient;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    
    @FeignClient("nacos-provider")
    public interface SchedualService {
        @GetMapping("/hello")
        String hello(@RequestParam(value = "name", defaultValue = "hadron", required = false) String name);
    }

package com.cntaiping.tpa.nacosconsumer.controller;
    
    import com.cntaiping.tpa.nacosconsumer.service.SchedualService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class ConsumerController {
    
        @Autowired
        private SchedualService schedualService;
    
        @GetMapping("/hi")
        public String hiFeign(){
            return schedualService.hello("feign");
        }
    
    }

### 2.4 运行效果 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 4]  
[http://localhost:8702/hi][http_localhost_8702_hi]  
![在这里插入图片描述][20190628094756919.png]

[https_github.com_alibaba_nacos_releases]: https://github.com/alibaba/nacos/releases
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70]: /images/20211220/4f0ea7aa6f2c410987990cc32194577d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 1]: /images/20211220/c6e828def96b4211ac6605e441600247.png
[http_10.17.36.27_8848_nacos]: http://10.17.36.27:8848/nacos
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 2]: /images/20211220/424a37c0cd02462d85cb10f2eb03c85b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 3]: /images/20211220/6c2982f503b04fb48e2352017da41ab5.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 4]: /images/20211220/9c1da637b6a045279f63cd6eb5edcef1.png
[http_localhost_8702_hi]: http://localhost:8702/hi
[20190628094756919.png]: /images/20211220/2cc60a1a96834d2f93054c5d7baf3e5b.png