学习nacos配置中心
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qiushijie
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="VcsDirectoryMappings">
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<mapping directory="$PROJECT_DIR$" vcs="Git" />
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</component>
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</project>
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@ -17,4 +17,12 @@
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<!-- 添加nacos配置中心依赖 -->
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<dependency>
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<groupId>com.alibaba.cloud</groupId>
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<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
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<!-- <version>${latest.version}</version>-->
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</dependency>
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</dependencies>
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</project>
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@ -2,6 +2,9 @@ package org.example;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.context.ConfigurableApplicationContext;
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import java.util.concurrent.TimeUnit;
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/**
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* Hello world!
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@ -10,8 +13,23 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class App
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{
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public static void main( String[] args )
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{
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SpringApplication.run(App.class,args);
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public static void main( String[] args ) throws InterruptedException {
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ConfigurableApplicationContext applicationContent = SpringApplication.run(App.class, args);
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while (true){
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String name = applicationContent.getEnvironment().getProperty("name");
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String password = applicationContent.getEnvironment().getProperty("password");
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String text = applicationContent.getEnvironment().getProperty("text");
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String common = applicationContent.getEnvironment().getProperty("common");
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System.out.println("------name--------:"+name);
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System.out.println("------password--------:"+password);
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System.out.println("------common--------:"+common);
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TimeUnit.SECONDS.sleep(1);
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}
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// nacos客户端 每10ms根据MD5去注册中心进行判断，如果发生变化会重新拉取
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// 但出现客户端一致拉取的情况，原因可能是 1、客户端的nacos与服务端的nacos版本不一致，2、设置了命名空间
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}
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}
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@ -0,0 +1,21 @@
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package org.example.controller;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.cloud.context.config.annotation.RefreshScope;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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@RestController
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@RequestMapping("/config")
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@RefreshScope
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public class ConfigController {
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@Value("${name}")
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private String name;
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@RequestMapping("/get")
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public String get() {
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return name;
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}
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}
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@ -0,0 +1,11 @@
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server:
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port: 8081
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# cloud:
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# nacos:
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# discovery:
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# server-addr: 127.0.0.1:8848
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#management:
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# endpoints:
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# web:
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# exposure:
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# include: *
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@ -1,14 +1,3 @@
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server:
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port: 8081
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spring:
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application:
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name: nacos-producer
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cloud:
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nacos:
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discovery:
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server-addr: 127.0.0.1:8848
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#management:
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# endpoints:
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# web:
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# exposure:
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# include: *
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profiles:
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active: prod
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@ -0,0 +1,37 @@
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# bootstrap文件是spring cloud扩展的配置文件，关于nacos的配置信息可以放置在这里
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spring:
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application:
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# 会自动根据服务名拉去 dataid 对应的配置文件（服务名与dataid一致）
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# 如果dataid与服务名不一致，则需要手动置顶，跟服务名一致的的dataid文件称为默认的配置文件
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# 默认的配置文件支持profiles配置，即：nacos-producer-dev,nacos-producer-prod
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# ${spring.application.name}-${profile}. ${file-extension:properties}
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name: nacos-producer
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cloud:
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nacos:
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# 如果服务端开启了权限管理，则必须填写用户信息和分组
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username: nacos
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password: nacos
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discovery:
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server-addr: 127.0.0.1:8848
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config:
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namespace: 64b4b4b4-c07d-4049-a3d5-34e08abcb093
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group: test
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server-addr: 127.0.0.1:8848
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file-extension: yaml # nacos配置中心的配置文件默认是properties格式的（只针对默认配置文件和profile），如果改为yaml文件需要添加声明，除了默认的配置文件都需要加上文件后缀
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#refresh-enable: false #禁止更新，一般不用
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shared-configs: #读取公共配置
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- data-id: producer-common.properties #下标[0]
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group: test # 默认是DEFAULT_GROUP
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refresh: true
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- data-id: producer-common2.properties #下标[1]
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group: test # 默认是DEFAULT_GROUP
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refresh: true
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extension-configs[0]:
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data-id: producer-common.properties
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group: test # 默认是DEFAULT_GROUP
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refresh: true
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# 配置文件的优先级（优先级大的会覆盖优先级晓得，并且会形成互补）
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# profile > 默认配置文件 > extension-configs > shared-configs(下标越大优先级就越大)
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