[Java知识库]基于nacos注册中心快速搭建一个SpringBoot项目

此配置参考b站视频
https://www.bilibili.com/video/BV1WZ4y1w7ww?p=3

下载Nacos

nacos1.4.1

启动Nacos

修改 bin目录下的startup.cmd，此操作仅在单机环境下需要

set MODE="standalone"

点击startup.cmd 启动nacos
访问nacos：http://localhost:8848/nacos/index.html

默认登入账号：nacos
默认登入密码：nacos

在Nacos中新建配置

创建SpringBoot项目

项目结构

创建一个Maven父工程添加依赖

删除src文件夹

 <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>
        <spring-cloud.version>Hoxton.SR8</spring-cloud.version>
        <springboot.version>2.3.2.RELEASE</springboot.version>
        <springcloudalibaba.version>2.2.5.RELEASE</springcloudalibaba.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${springboot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${springcloudalibaba.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>
            </plugin>
        </plugins>
    </build>

创建子项目(Maven)

引入依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

    <!-- 配置中心 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
    </dependencies>

编写Controller层相关代码

package com.java1234.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
@RequestMapping("/nacos")
@RefreshScope
public class NacosConfigController {

    @Value("${java1234.name}")
    private String name;

    @Value("${java1234.age}")
    private String age;

    @GetMapping("/getConfigInfo")
    public String getConfigInfo(){
        return name+":"+age;
    }
}

编写ConfigApplication

使用spring initializr创建项目可以忽略此步

package com.java1234;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication
public class NacosConfigApplication {

    public static void main(String[] args) {
        SpringApplication.run(NacosConfigApplication.class,args);
    }
}

在Properties文件中配置nacos相关信息

#项目名称，一般以当前项目名称
spring.application.name=nacos_config_test
#配置中心在哪
spring.cloud.nacos.config.server-addr=127.0.0.1:8848
#哪个组，和nacos中配置对应
spring.cloud.nacos.config.group=DEFAULT_GROUP
#哪个DataID，和nacos中配置对应
spring.cloud.nacos.config.name=nacos-demo-test.Properties

在Nacos中配置属性值

运行项目