Springcloud 集成 Nacos配置中心

深碍√TFBOYSˉ_ 2023-10-02 17:02 28阅读 0赞

## 1.Nacos安装启动 ##

[LINUX NACOS 快速启动][LINUX NACOS]

## **2.nacos添加配置** ##

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAT2NlYW5A5LiK5rqQ56CB_size_20_color_FFFFFF_t_70_g_se_x_16][]

Data ID:需要应用在配置

## **3.添加依赖【pom.xml】** ##

<?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 https://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>2.2.2.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.lhy</groupId>
        <artifactId>cloud-api</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>cloud-api</name>
        <description>cloud-api</description>
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>2.2.2.RELEASE</spring-cloud.version>
            <spring-nacos.version>2.2.1.RELEASE</spring-nacos.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</artifactId>
            </dependency>
    
            
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
                <version>${spring-nacos.version}</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
                <version>${spring-nacos.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-commons</artifactId>
                <version>${spring-cloud.version}</version>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

## **4.配置【bootstrap.yml】** ##

server:
      port: 12315
    
    spring:
      application:
        name: cloud-api
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848
          config:
            server-addr: 127.0.0.1:8848
            prefix: doctor-dev
            file-extension: yml

核心配置

config:server-addr: 127.0.0.1:8848 配置中心地址  
file-extension: yml 配置文件格式  
prefix 配置文件前缀

Data ID = $\{prefix\}.$\{file-extension\} 默认为$\{spring:application:name\}+$\{spring:profiles:active: dev\}.$\{file-extension\}

Nacos配置中心的配置必须在**bootstrap.yml**或者**bootstrap-xx.yml**中配置，一个算是主要原因的原因：**bootstrap.yml**的优先级高于**application.yml。**

## **5.启动类** ##

@SpringBootApplication
    @EnableDiscoveryClient
    public class CloudApiApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(CloudApiApplication.class, args);
        }
    
    }

## **6.测试** ##

/**
     * Class description.
     *
     * @author ocean liu
     * @createTime 2021/11/29 - 10:57
     */
    @RequestMapping("/user")
    @RestController
    @RefreshScope // 支持动态更新
    public class UserController {
    
        @Value("${user.headPortrait:123.png}")
        private String headPortrait;
    
        @GetMapping("/headPortrait")
        public String headPortrait(){
            return headPortrait;
        }
    
    }

@RefreshScope 支持动态更新（类上注解）  
@Value("$\{user.headPortrait:123.png\}") 默认123.png

## **7.验证** ##

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAT2NlYW5A5LiK5rqQ56CB_size_20_color_FFFFFF_t_70_g_se_x_16 1][]

[Springcloud 集成 Nacos注册中心][Springcloud _ Nacos]

[LINUX NACOS]: https://blog.csdn.net/qq_34253002/article/details/121561237
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[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAT2NlYW5A5LiK5rqQ56CB_size_20_color_FFFFFF_t_70_g_se_x_16 1]: https://img-blog.csdnimg.cn/13fbafa024ed47b4945a3f2d3cdcba4b.png?x-oss-process=image/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAT2NlYW5A5LiK5rqQ56CB,size_20,color_FFFFFF,t_70,g_se,x_16
[Springcloud _ Nacos]: https://blog.csdn.net/qq_34253002/article/details/121608128?spm=1001.2014.3001.5501