spring cloud alibaba nacos config配置管理例子

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本文是spring cloud alibaba nacos config例子，包含本地配置，nacos配置，动态刷新示例代码
工程示例代码
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>
	<groupId>com.penngo.spring.cloud</groupId>
	<artifactId>spring-cloud-alibaba-nacos-configuration</artifactId>
	<version>1.0.0-SNAPSHOT</version>
	<name>spring-cloud-alibaba-nacos-configuration</name>
	<description>https://my.oschina.net/penngo</description>
	<properties>
		<maven.compiler.source>8</maven.compiler.source>
		<maven.compiler.target>8</maven.compiler.target>
		<java.version>8</java.version>
		<spring-boot.version>2.5.9</spring-boot.version>
		<spring-cloud.version>2020.0.5</spring-cloud.version>
		<spring-cloud-alibaba.version>2021.1</spring-cloud-alibaba.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
		</dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-bootstrap</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-dependencies</artifactId>
				<version>${spring-boot.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>${spring-cloud.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
			<dependency>
				<groupId>com.alibaba.cloud</groupId>
				<artifactId>spring-cloud-alibaba-dependencies</artifactId>
				<version>${spring-cloud-alibaba.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>
</project>

bootstrap.properties

spring.application.name=nacos-configuration-sample
server.port=8080
spring.cloud.nacos.config.server-addr=localhost:8848
spring.cloud.nacos.config.prefix=example
user.blog=https://my.oschina.net/penngo

NacosConfiguration.java

package com.penngo.spring.cloud;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.context.ApplicationContext;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
public class NacosConfiguration {

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

    @RestController
    @RefreshScope
    class ConfigurationController {

        @Autowired
        ApplicationContext context;

        @Value("${user.info:unknown}")
        String bookAuthor;

        @GetMapping("/config")
        public  String config() {
            StringBuilder sb = new StringBuilder();
            sb.append("env.get('user.name')=" + context.getEnvironment().getProperty("user.name"))
              .append("<br/>env.get('user.blog')=" + context .getEnvironment().getProperty("user.blog"))
              .append("<br/>user.info=" + bookAuthor);
            return sb.toString();
        }
    }

}

运行效果

nacos配置

修改nacos值

源码下载