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|Nacos
字数总计: 2.8k|阅读时长: 15 分钟

简介

事实上Nacos就是一个springboot的web项目，它提供了注册和配置的相关核心功能，然后对外暴露了各种接口；我相信做过javaweb开发的同学都知道，怎么对外提供接口呢？无非就是通过controller层暴露一些RequestMapping嘛，这点，咱们可以通过源码去验证。
nacos具体暴露哪些接口调用可以参考：Open API 指南。

到这一步，我们大概明白了nacos的架构了，但是有一个问题，虽然nacos提供了各种接口，但是我们要使用它的话，不能我们自己去封装各种http调用工具去调用它的接口吧？如果是要我们自己通过业务代码去封装工具的话，那nacos的价值也不会很高，所以，为了让我们使用起来更加方便，nacos的设计者肯定是要帮我们做一些事情的，这个时候nacos就分为了两个模块：nacos-server（主要提供注册和配置的核心功能）和nacos-client端（这里面实际上就是封装了http调用的一些工具，让使用者不需要自己去封装，只要调用方法就好了）。

nacos-client封装了哪些方法可以参考：Java SDK。

到这一步，事实上还是不够，我们一起来想想，虽然nacos-client端给我们封装了工具，但是我业务代码还是得去手动调用这些方法，还是对我的业务代码有侵入性，这样的话还是不够简洁。这个时候怎么办呢？我们会想到springboot的自动装配，通过springboot去帮我们完成对象的实例化，然后在适当的时机自动帮我们调用核心api。

这个时候好事之人帮我们对nacos-client包又进行了封装，有注册的jar包：nacos-discovery-spring-boot-starter和配置的jar包：nacos-config-spring-boot-starter，但是事实上这两个jar包功能还不够强大，因为无法做到自动注册，而且动态刷新配置的时候需要加一些注解，那好事之人又出现了，对nacos-client做了更进一步封装：spring-cloud-starter-alibaba-nacos-discovery和spring-cloud-starter-alibaba-nacos-config

封装示例

spring-cloud-starter-alibaba-nacos-config

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<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-alibaba-starters</artifactId>
    <version>2.2.7.RELEASE</version>
  </parent>
  <groupId>com.alibaba.cloud</groupId>
  <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
  <version>2.2.7.RELEASE</version>
  <name>Spring Cloud Starter Alibaba Nacos Config</name>
  <description>Spring Cloud Alibaba Starters</description>
  <url>https://github.com/alibaba/spring-cloud-alibaba/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-config</url>
  <organization>
    <name>Pivotal Software, Inc.</name>
    <url>https://www.spring.io</url>
  </organization>
  <licenses>
    <license>
      <name>Apache License, Version 2.0</name>
      <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
      <distribution>repo</distribution>
    </license>
  </licenses>
  <developers>
    <developer>
      <name>xiaojing</name>
      <email>flystar32@163.com</email>
    </developer>
    <developer>
      <name>Jim Fang</name>
      <email>fangjian0423@gmail.com</email>
      <url>https://github.com/fangjian0423</url>
      <organization>Alibaba</organization>
    </developer>
    <developer>
      <name>xiaolongzuo</name>
      <email>150349407@qq.com</email>
    </developer>
    <developer>
      <name>hengyunabc</name>
      <email>hengyunabc@gmail.com</email>
    </developer>
    <developer>
      <id>mercyblitz</id>
      <name>Mercy Ma</name>
      <email>mercyblitz@gmail.com</email>
      <url>https://github.com/mercyblitz</url>
      <organization>Alibaba</organization>
    </developer>
    <developer>
      <name>yunzheng</name>
      <email>yunzheng1228@gmail.com</email>
    </developer>
    <developer>
      <id>theonefx</id>
      <name>theonefx</name>
      <email>chenxilzx1@gmail.com</email>
      <url>https://github.com/theonefx</url>
      <organization>Alibaba</organization>
    </developer>
  </developers>
  <scm>
    <connection>scm:git:git://github.com/alibaba/spring-cloud-alibaba.git/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-config</connection>
    <developerConnection>scm:git:ssh://git@github.com/alibaba/spring-cloud-alibaba.git/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-config</developerConnection>
    <url>https://github.com/alibaba/spring-cloud-alibaba/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-config</url>
  </scm>
  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-actuator</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-actuator-autoconfigure</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-configuration-processor</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-autoconfigure</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>com.alibaba.spring</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>1.0.10</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>com.alibaba.nacos</groupId>
      <artifactId>nacos-client</artifactId>
      <version>2.0.3</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-commons</artifactId>
      <version>2.2.9.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-context</artifactId>
      <version>2.2.9.RELEASE</version>
      <scope>compile</scope>
    </dependency>
  </dependencies>
</project>

spring-cloud-starter-alibaba-nacos-discovery

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<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-alibaba-starters</artifactId>
    <version>2.2.7.RELEASE</version>
  </parent>
  <groupId>com.alibaba.cloud</groupId>
  <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
  <version>2.2.7.RELEASE</version>
  <name>Spring Cloud Starter Alibaba Nacos Discovery</name>
  <description>Spring Cloud Alibaba Starters</description>
  <url>https://github.com/alibaba/spring-cloud-alibaba/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery</url>
  <organization>
    <name>Pivotal Software, Inc.</name>
    <url>https://www.spring.io</url>
  </organization>
  <licenses>
    <license>
      <name>Apache License, Version 2.0</name>
      <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
      <distribution>repo</distribution>
    </license>
  </licenses>
  <developers>
    <developer>
      <name>xiaojing</name>
      <email>flystar32@163.com</email>
    </developer>
    <developer>
      <name>Jim Fang</name>
      <email>fangjian0423@gmail.com</email>
      <url>https://github.com/fangjian0423</url>
      <organization>Alibaba</organization>
    </developer>
    <developer>
      <name>xiaolongzuo</name>
      <email>150349407@qq.com</email>
    </developer>
    <developer>
      <name>hengyunabc</name>
      <email>hengyunabc@gmail.com</email>
    </developer>
    <developer>
      <id>mercyblitz</id>
      <name>Mercy Ma</name>
      <email>mercyblitz@gmail.com</email>
      <url>https://github.com/mercyblitz</url>
      <organization>Alibaba</organization>
    </developer>
    <developer>
      <name>yunzheng</name>
      <email>yunzheng1228@gmail.com</email>
    </developer>
    <developer>
      <id>theonefx</id>
      <name>theonefx</name>
      <email>chenxilzx1@gmail.com</email>
      <url>https://github.com/theonefx</url>
      <organization>Alibaba</organization>
    </developer>
  </developers>
  <scm>
    <connection>scm:git:git://github.com/alibaba/spring-cloud-alibaba.git/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery</connection>
    <developerConnection>scm:git:ssh://git@github.com/alibaba/spring-cloud-alibaba.git/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery</developerConnection>
    <url>https://github.com/alibaba/spring-cloud-alibaba/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery</url>
  </scm>
  <dependencies>
    <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-alibaba-commons</artifactId>
      <version>2.2.7.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-actuator</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-actuator-autoconfigure</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-configuration-processor</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-autoconfigure</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-webflux</artifactId>
      <version>2.3.12.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>com.alibaba.nacos</groupId>
      <artifactId>nacos-client</artifactId>
      <version>2.0.3</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>com.alibaba.spring</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>1.0.10</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-commons</artifactId>
      <version>2.2.9.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-context</artifactId>
      <version>2.2.9.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
      <version>2.2.9.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-config-client</artifactId>
      <version>2.2.8.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-config-server</artifactId>
      <version>2.2.8.RELEASE</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
  </dependencies>
</project>
文章作者: GeYu
文章链接: https://nuistgy.github.io/2023/02/15/Nacos相关依赖包关系/
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