SpringAlibaba的Nacos

Nacos简介

为什么叫Nacos

前四个字母分别为Naming和Configuration的前两个字母，最后的s为Service

是什么

1.是一个更易于构建云原生应用的动态服务发现、配置管理和服务管理平台。

2.Nacos:Dynamic Naming and Configuration Service

3.Nacos 就是注册中心 + 配置中心的组合。也就是说Nacos等价于 Eureka + Config + Bus

能干什么

1.可以取代Eureka做服务中心。

2.可以取代Config做配置中心。

去哪里学习、下载？

GitHub：https://github.com/alibaba/Nacos

中文版：https://nacos.io/zh-cn/

由于github上下载很慢，所以分享个nacos-server-1.2.1链接给大家：

链接：https://pan.baidu.com/s/112gp5pgDlcSM0Br6ByeymQ
提取码：b8l1

启动运行

解压文件，cmd进入bin目录并运行startup.cmd出现下图，即可

C:D	ools
acosin>startup.cmd

         ,--.
       ,--.'|
   ,--,:  : |                                           Nacos 1.2.1
,`--.'`|  ' :                       ,---.               Running in stand alone mode, All function modules
|   :  :  | |                      '   ,'   .--.--.    Port: 8848
:   |    | :  ,--.--.     ,---.  /   /   | /  /    '   Pid: 7520
|   : '  '; | /          /     .   ; ,. :|  :  /`./   Console: http://192.168.100.184:8848/nacos/index.html
'   ' ;.    ;.--.  .-. | /    / ''   | |: :|  :  ;_
|   | |    | \__/: . ..    ' / '   | .; :       `.      https://nacos.io
'   : |  ; .' ," .--.; |'   ; :__|   :    |  `----.   
|   | '`--'  /  /  ,.  |'   | '.'|     /  /  /`--'  /
'   : |     ;  :   .'      :    : `----'  '--'.     /
;   |.'     |  ,     .-./     /            `--'---'
'---'        `--`---'     `----'

然后访问直接访问http://localhost:8848/nacos 账号密码 nacos，如果能顺利访问，那么证明nacos启动成功。

创建实例

父pom

  <!--统一管理jar包版本-->
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <junit.version>4.12</junit.version>
    <log4j.version>1.2.17</log4j.version>
    <lombok.version>1.16.18</lombok.version>
    <mysql.version>5.1.47</mysql.version>
    <druid.version>1.1.16</druid.version>
    <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
  </properties>


  <!--子模块继承之后，提供作用：锁定版本+子modlue不用谢groupId和version-->
  <dependencyManagement>
    <dependencies>
      <!--springboot 2.2.7-->
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-dependencies</artifactId>
        <version>2.2.7.RELEASE</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
      <!--spring cloud Hoxton.SR5-->
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>Hoxton.SR5</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
      <!--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>
      <!--mysql-->
      <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>${mysql.version}</version>
      </dependency>
      <!--druid-->
      <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>${druid.version}</version>
      </dependency>
      <!--mybatis-->
      <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>${mybatis.spring.boot.version}</version>
      </dependency>
      <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
      </dependency>
    </dependencies>
  </dependencyManagement>

  <build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-site-plugin</artifactId>
          <version>3.7.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-project-info-reports-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
      </plugins>
    </pluginManagement>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-site-plugin</artifactId>
        <configuration>
          <locales>en,fr</locales>
        </configuration>
      </plugin>
      <!--热启动插件-->
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <configuration>
          <fork>true</fork>
          <addResources>true</addResources>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <repositories>
    <repository>
      <id>nexus-aliyun</id>
      <name>Nexus aliyun</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public</url>
      <releases>
        <enabled>true</enabled>
      </releases>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
    </repository>
  </repositories>

新建module模块cloudalibaba-provider-payment9001

POM

<dependencies>
        <!--springcloud alibaba nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency> 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!--引入热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

application.yml

server:
  port: 9001
spring:
  application:
    name: nacos-provider
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
management:
  endpoints:
    web:
      exposure:
        include: '*'

主启动类 ，重点关注@EnableDiscoveryClient

package com.seegot.springcloud;

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

/**
 * @program: cloud2020
 * @description:
 * @author: PP Zhang
 * @create: 2020-07-01 14:04
 */
@SpringBootApplication
@EnableDiscoveryClient
public class NacosProviderMain9002 {
    public static void main(String[] args) {
        SpringApplication.run(NacosProviderMain9002.class,args);
    }
}

业务类

package com.seegot.springcloud.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

/**
 * @program: cloud2020
 * @description:
 * @author: PP Zhang
 * @create: 2020-07-01 14:05
 */
@RestController
@Slf4j
public class ProviderController {
    @Value("${server.port}")
    private  String serverPort;
    @GetMapping(value = "/echo/{name}")
    public String echo(@PathVariable("name") String name){
        return "Hello Nacos discovery,welcome  " + name+",serverPort:"+serverPort;
    }
}

启动测试

http://localhost:8848/nacos/#/serviceManagement?dataId=&group=&appName=&serverId=&namespace=

服务注册成功。