dedecms导航网站模板,手机百度网址是什么,网站方案设计与论证,dedecms游戏门户网站源码B站学习视频 基于Dubbo3.2.9、Nacos2.3.0、SpringBoot 2.7.17、Dubbo-Admin 0.6.0、Jdk1.8 搭建的Dubbo学习Demo 一、前置安装 1-1、Nacos 安装 我本地是通过docker-compose来安装nacos的#xff0c;如果需要其它方式安装可以去百度找下教程#xff0c;版本是2.3.0的 docker…B站学习视频 基于Dubbo3.2.9、Nacos2.3.0、SpringBoot 2.7.17、Dubbo-Admin 0.6.0、Jdk1.8 搭建的Dubbo学习Demo 一、前置安装 1-1、Nacos 安装 我本地是通过docker-compose来安装nacos的如果需要其它方式安装可以去百度找下教程版本是2.3.0的 docker-compose 安装Nacos 1-1-1、创建 namespase 1-1-2、新增配置文件 dubbo3-consumer dubbo:application:id: xdx-dubbo3-consumername: xdx-dubbo3-consumerserialize-check-status: WARNregistry:address: nacos://${nacos.config.server-addr}parameters.namespace: ${nacos.config.namespace}dubbo3-provider server:port: 5656dubbo:application:id: xdx-dubbo3-providername: xdx-dubbo3-providerserialize-check-status: WARNprotocol:id: dubboname: dubbohost: 127.0.0.1port: 7788serialization: hessian2registry:address: nacos://${nacos.config.server-addr}parameters.namespace: ${nacos.config.namespace}dubboParams: xdx971dubbo3-provider2 server:port: 5657dubbo:application:id: xdx-dubbo3-providername: xdx-dubbo3-providerserialize-check-status: WARNprotocol:id: dubboname: dubbohost: 127.0.0.1port: 7789serialization: hessian2registry:address: nacos://${nacos.config.server-addr}parameters.namespace: ${nacos.config.namespace}dubboParams: xdx1-2、Dubbo-Admin 安装 ### 1-2-1、下载代码 https://github.com/apache/dubbo-admin/releases 1-2-2、环境安装 Dubbo-Admin 是基于 Vue和 Java开发的下载源码后想要运行就需要依赖以下环境 Node v16.20.2 【18会报错】Jdk 1.8Maven 1-2-3、服务启动 1-2-3-1、前端启动 进入下面的路径执行npm 或 yarn 命令 /dubbo-admin-0.6.0/dubbo-admin-ui npm install / yarn installnpm run dev / yarn run dev 1-2-3-2、后端启动 配置文件修改为如下主要是指定 nacos地址然后用 idea 打开 dubbo-admin-server 项目下载maven依赖后启动 server.port38080 dubbo.protocol.port30880 dubbo.application.qos-port32222# centers in dubbo, if you want to add parameters, please add them to the url admin.registry.addressnacos://127.0.0.1:8848?namespace70b158a6-7e64-478d-8c5b-699089aa81d1 admin.config-centernacos://127.0.0.1:8848?namespace70b158a6-7e64-478d-8c5b-699089aa81d1 admin.metadata-report.addressnacos://127.0.0.1:8848?namespace70b158a6-7e64-478d-8c5b-699089aa81d1# dubbo-admin 登录账号密码 admin.root.user.nameroot admin.root.user.passwordroot#session timeout, default is one hour admin.check.sessionTimeoutMilli3600000#compress server.compression.enabledtrue server.compression.mime-typestext/css,text/javascript,application/javascript server.compression.min-response-size10240#token timeout, default is one hour admin.check.tokenTimeoutMilli3600000 #Jwt signingKey admin.check.signSecret86295dd0c4ef69a1036b0b0c15158d77#dubbo config dubbo.application.namedubbo-admin dubbo.registry.address${admin.registry.address} #dubbo.registry.parameters.namespace70b158a6-7e64-478d-8c5b-699089aa81d1# id generate type mybatis-plus.global-config.db-config.id-typenonedubbo.application.loggerslf4j二、搭建Dubbo-Demo 项目整体结构图 2-1、父工程项目依赖 ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersiongroupIdcom.xdx97/groupIdartifactIddubbo3-demo/artifactIdpackagingpom/packagingversion1.0-SNAPSHOT/versionmodulesmoduledubbo3-provider/modulemoduledubbo3-consumer/modulemoduledubbo3-api/modulemoduledubbo3-provider2/module/modulespropertiesmaven.compiler.source8/maven.compiler.sourcemaven.compiler.target8/maven.compiler.targetjava.version1.8/java.versionspring.boot.version2.7.17/spring.boot.versionnacos.boot.version0.2.12/nacos.boot.versiondubbo.version3.2.9/dubbo.version/properties/project2-2、api dubbo提供和调用本地方法一样的体验所以需要提供api包 2-2-1、pom ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdparentartifactIddubbo3-demo/artifactIdgroupIdcom.xdx97/groupIdversion1.0-SNAPSHOT/version/parentmodelVersion4.0.0/modelVersionartifactIddubbo3-api/artifactIdpropertiesmaven.compiler.source8/maven.compiler.sourcemaven.compiler.target8/maven.compiler.target/properties/project2-2-2、DemoService —接口 package com.xdx97.dubbo3.api;public interface DemoService {String getString(); }2-3、provider —服务提供者 2-3-1、pom ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdparentartifactIddubbo3-demo/artifactIdgroupIdcom.xdx97/groupIdversion1.0-SNAPSHOT/version/parentmodelVersion4.0.0/modelVersionartifactIddubbo3-provider/artifactIdpropertiesmaven.compiler.source8/maven.compiler.sourcemaven.compiler.target8/maven.compiler.target/propertiesdependencyManagementdependenciesdependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-parent/artifactIdversion${spring.boot.version}/versiontypepom/typescopeimport/scope/dependency/dependencies/dependencyManagementdependencies!-- spring boot starter --dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependency!--nacos配置中心依赖--dependencygroupIdcom.alibaba.boot/groupIdartifactIdnacos-config-spring-boot-starter/artifactIdversion${nacos.boot.version}/version/dependencydependencygroupIdorg.apache.dubbo/groupIdartifactIddubbo-spring-boot-starter/artifactIdversion${dubbo.version}/versionexclusionsexclusionartifactIdjavassist/artifactIdgroupIdorg.javassist/groupId/exclusion/exclusions/dependency!-- dubbo整合nacos --dependencygroupIdorg.apache.dubbo/groupIdartifactIddubbo-registry-nacos/artifactIdversion${dubbo.version}/version/dependency!-- 自定义api --dependencygroupIdcom.xdx97/groupIdartifactIddubbo3-api/artifactIdversion1.0-SNAPSHOT/versionscopecompile/scope/dependency/dependencies /project 2-3-2、启动类 import org.apache.dubbo.config.spring.context.annotation.EnableDubbo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;SpringBootApplication EnableDubbo public class App {public static void main(String[] args) {SpringApplication.run(App.class, args);} }2-3-3、DemoServiceImpl —服务实现类 这里的代码做了小小的改动 实时读取nacos的配置文件数据验证dubbo超时设置和重试机制 import com.alibaba.nacos.api.config.annotation.NacosValue; import com.xdx97.dubbo3.api.DemoService; import org.apache.dubbo.config.annotation.DubboService; import java.util.concurrent.atomic.AtomicLong;DubboService(version 1.0.0) public class DemoServiceImpl implements DemoService {// nacos.config.autoRefresh true 这个配置要打才可以NacosValue(value ${dubboParams}, autoRefreshed true)private String dubboParams;private AtomicLong atomicLong new AtomicLong(0);Overridepublic String getString() {long l atomicLong.incrementAndGet();try {Thread.sleep(1000 - (100 * l));}catch (Exception e) {e.printStackTrace();}return dubboParams;} }2-3-4、application —配置文件 nacos:config:# 指定命名空间namespace: 70b158a6-7e64-478d-8c5b-699089aa81d1#配置服务地址server-addr: 127.0.0.1:8848accessKey:secretKey:#data-ids 为新增加的data-iddata-ids: dubbo3-provider#配置类型type: yaml#是否启动刷新配置autoRefresh: true#运行时启用bootstrap:enable: true注 nacos的 namespace 在nacos上面已经配置好了dubbo3-provider2 的代码和 dubbo3-provider是一样的创建2个 provider是为了验证它的负载均衡 2-4、consumer —消费者 2-4-1、pom 引入的依赖和【2-3-1】一样 2-4-2、启动类 import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;SpringBootApplication public class App {public static void main(String[] args) {SpringApplication.run(App.class, args);} }2-4-3、DemoConsumer —消费者测试 这里设置了超时时间为 1s重试2次 import com.xdx97.dubbo3.api.DemoService; import org.apache.dubbo.config.annotation.DubboReference; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController;RestController public class DemoConsumer {DubboReference(version 1.0.0, timeout 1000, retries 1)private DemoService demoService;GetMapping(/fun-test)public String funTest() {return demoService.getString();}}三、测试 3-1、服务启动 服务有点多按照下面顺序依次启动 MySQL nacos持久化的依赖NacosDubbo-admin-serviceDubbo-admin-uiconsumerproviderprovider2 3-2、验证 多请求几次接口 http://localhost:8080/fun-test 然后再去把 provider 或 provider2 中的dubboParams 参数修改掉再次请求几次可以得出下面的结论 Dubbo 项目搭建成功Dubbo 可以自动负载Dubbo 的重试和超时机制Nacos的热更新 四、源代码获取 关注微信公众号小道仙97回复dubbo3-demo-xdx