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

  1   <!--统一管理jar包版本-->
  2   <properties>
  3     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  4     <maven.compiler.source>1.8</maven.compiler.source>
  5     <maven.compiler.target>1.8</maven.compiler.target>
  6     <junit.version>4.12</junit.version>
  7     <log4j.version>1.2.17</log4j.version>
  8     <lombok.version>1.16.18</lombok.version>
  9     <mysql.version>5.1.47</mysql.version>
 10     <druid.version>1.1.16</druid.version>
 11     <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
 12   </properties>
 13 
 14 
 15   <!--子模块继承之后，提供作用：锁定版本+子modlue不用谢groupId和version-->
 16   <dependencyManagement>
 17     <dependencies>
 18       <!--springboot 2.2.7-->
 19       <dependency>
 20         <groupId>org.springframework.boot</groupId>
 21         <artifactId>spring-boot-dependencies</artifactId>
 22         <version>2.2.7.RELEASE</version>
 23         <type>pom</type>
 24         <scope>import</scope>
 25       </dependency>
 26       <!--spring cloud Hoxton.SR5-->
 27       <dependency>
 28         <groupId>org.springframework.cloud</groupId>
 29         <artifactId>spring-cloud-dependencies</artifactId>
 30         <version>Hoxton.SR5</version>
 31         <type>pom</type>
 32         <scope>import</scope>
 33       </dependency>
 34       <!--spring cloud alibaba 2.1.0.RELEASE-->
 35       <dependency>
 36         <groupId>com.alibaba.cloud</groupId>
 37         <artifactId>spring-cloud-alibaba-dependencies</artifactId>
 38         <version>2.1.0.RELEASE</version>
 39         <type>pom</type>
 40         <scope>import</scope>
 41       </dependency>
 42       <!--mysql-->
 43       <dependency>
 44         <groupId>mysql</groupId>
 45         <artifactId>mysql-connector-java</artifactId>
 46         <version>${mysql.version}</version>
 47       </dependency>
 48       <!--druid-->
 49       <dependency>
 50         <groupId>com.alibaba</groupId>
 51         <artifactId>druid</artifactId>
 52         <version>${druid.version}</version>
 53       </dependency>
 54       <!--mybatis-->
 55       <dependency>
 56         <groupId>org.mybatis.spring.boot</groupId>
 57         <artifactId>mybatis-spring-boot-starter</artifactId>
 58         <version>${mybatis.spring.boot.version}</version>
 59       </dependency>
 60       <dependency>
 61         <groupId>org.projectlombok</groupId>
 62         <artifactId>lombok</artifactId>
 63       </dependency>
 64     </dependencies>
 65   </dependencyManagement>
 66 
 67   <build>
 68     <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
 69       <plugins>
 70         <plugin>
 71           <artifactId>maven-clean-plugin</artifactId>
 72           <version>3.1.0</version>
 73         </plugin>
 74         <plugin>
 75           <artifactId>maven-site-plugin</artifactId>
 76           <version>3.7.1</version>
 77         </plugin>
 78         <plugin>
 79           <artifactId>maven-project-info-reports-plugin</artifactId>
 80           <version>3.0.0</version>
 81         </plugin>
 82       </plugins>
 83     </pluginManagement>
 84     <plugins>
 85       <plugin>
 86         <groupId>org.apache.maven.plugins</groupId>
 87         <artifactId>maven-site-plugin</artifactId>
 88         <configuration>
 89           <locales>en,fr</locales>
 90         </configuration>
 91       </plugin>
 92       <!--热启动插件-->
 93       <plugin>
 94         <groupId>org.springframework.boot</groupId>
 95         <artifactId>spring-boot-maven-plugin</artifactId>
 96         <configuration>
 97           <fork>true</fork>
 98           <addResources>true</addResources>
 99         </configuration>
100       </plugin>
101     </plugins>
102   </build>
103   <repositories>
104     <repository>
105       <id>nexus-aliyun</id>
106       <name>Nexus aliyun</name>
107       <url>http://maven.aliyun.com/nexus/content/groups/public</url>
108       <releases>
109         <enabled>true</enabled>
110       </releases>
111       <snapshots>
112         <enabled>false</enabled>
113       </snapshots>
114     </repository>
115   </repositories>

View Code

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

 1 package com.seegot.springcloud.controller;
 2 
 3 import lombok.extern.slf4j.Slf4j;
 4 import org.springframework.beans.factory.annotation.Value;
 5 import org.springframework.web.bind.annotation.GetMapping;
 6 import org.springframework.web.bind.annotation.PathVariable;
 7 import org.springframework.web.bind.annotation.RestController;
 8 
 9 /**
10  * @program: cloud2020
11  * @description:
12  * @author: PP Zhang
13  * @create: 2020-07-01 14:05
14  */
15 @RestController
16 @Slf4j
17 public class ProviderController {
18     @Value("${server.port}")
19     private  String serverPort;
20     @GetMapping(value = "/echo/{name}")
21     public String echo(@PathVariable("name") String name){
22         return "Hello Nacos discovery,welcome  " + name+",serverPort:"+serverPort;
23     }
24 }

启动测试

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

服务注册成功。