dubbo+nacos+Spring Boot
실제 개발에 대해 이야기하기 위해 자세한 예시를 작성하겠습니다. 이 기사에서는 이론적 지식을 너무 많이 다루지는 않지만 dubbo를 nacos와 통합하여 개발 환경을 신속하게 구축하는 방법을 설명하는 가장 간단한 예를 작성합니다.dubbo 코어 노드 간의 호출 관계
노드 설명
호출 관계 설명
모두의 이해를 돕기 위해 해당 생산자와 소비자의 데모 코드와 사용된 등록 센터를 알려드립니다.
springboot, netflix, cloud alibaba 버전 간에 대응이 있습니다. 이 글에서 선택한 버전은 다음과 같습니다
dubbo와 버전 사이에 있습니다. cloud alibaba 이들 간의 대응 관계, 이 글에서 선택한 버전은 다음과 같습니다
이후 사용의 편의를 위해SpringCloud Alibaba
개발을 위해 먼저 주로 프로젝트 기술 스택 버전 관리에 사용되는 pom 유형 상위 프로젝트를 생성하고 스프링 클라우드 -alibaba-example, src 파일을 제거하고 pom 파일을 수정하세요<code style="padding: 2px 4px;border-radius: 4px;margin-right: 2px;margin-left: 2px;font-family: 'Operator Mono', Consolas, Monaco, Menlo, monospace;word-break: break-all;color: rgb(228, 105, 24);background-color: rgb(239, 239, 239);font-size: 0.875em;line-height: 1.6 !important;">SpringCloud Alibaba
进行开发,首先创建一个pom类型的父项目,主要用于项目技术栈版本管理,创建一个maven项目,名称为spring-cloud-alibaba-example
,去除src文件,修改pom文件
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>ah.wideth</groupId> <artifactId>spring-cloud-alibaba-example</artifactId> <version>1.0-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.12.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <packaging>pom</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <java.version>1.8</java.version> <spring-cloud.version>Hoxton.SR12</spring-cloud.version> <com-alibaba-cloud.version>2.2.7.RELEASE</com-alibaba-cloud.version> </properties> <!--对项目版本进行管理--> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-dependencies</artifactId> <version>${com-alibaba-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> </project>
后续创建的项目都放到此目录下,只需要声明groupId和artifactId,会自动引用父项目spring-cloud-alibaba-example
<?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> <artifactId>spring-cloud-alibaba-example</artifactId> <groupId>ah.wideth</groupId> <version>1.0-SNAPSHOT</version> </parent> <modules> <module>public-api</module> <module>dubbo-provider</module> <module>dubbo-consumer</module> </modules> <artifactId>dubbo-nacos-example</artifactId> <name>dubbo-nacos-example</name> <description>duboo与nacos整合的父工程</description> <packaging>pom</packaging> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>utf-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <dubbo.version>2.7.13</dubbo.version> <nacos.version>1.4.1</nacos.version> </properties> <dependencies> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> <!--解决nacos-client2.0报错的问题--> <exclusions> <exclusion> <artifactId>nacos-client</artifactId> <groupId>com.alibaba.nacos</groupId> </exclusion> </exclusions> </dependency> <!--dubbo相关--> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>${dubbo.version}</version> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-registry-nacos</artifactId> <version>${dubbo.version}</version> </dependency> <dependency> <groupId>com.alibaba.nacos</groupId> <artifactId>nacos-client</artifactId> <version>${nacos.version}</version> </dependency> <!-- 解决dubbo2.7.13jar包冲突问题--> <dependency> <groupId>com.alibaba.spring</groupId> <artifactId>spring-context-support</artifactId> <version>1.0.11</version> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo</artifactId> <version>${dubbo.version}</version> <exclusions> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring</artifactId> </exclusion> <exclusion> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> </exclusion> <exclusion> <groupId>log4j</groupId> <artifactId>log4j</artifactId> </exclusion> </exclusions> </dependency> </dependencies> </project>이후 생성된 프로젝트는 이 디렉터리에 배치됩니다. groupId 및 이슈 ID만 선언하면 상위 프로젝트가 자동으로 참조됩니다. 코드 스타일="padding: 2px 4px; border-radius: 4px;margin-right: 2px;margin-left: 2px;font-family: 'Operator Mono', Consolas, Monaco, Menlo, monospace;word-break: break- 모두;색상: rgb(228, 105, 24) ;배경색: rgb(239, 239, 239);글꼴 크기: 0.875em;줄 높이: 1.6 !important;">spring-cloud-alibaba-example 버전. 루트 프로젝트만큼 상위 프로젝트가 아닙니다. 새로운 기술을 배울 때마다 실제 상위 프로젝트가 생성되고 해당 상위 프로젝트 아래에 많은 하위 프로젝트가 생성됩니다🎜
본 글의 케이스는 위의 나코스 개발 예시를 바탕으로 작성되었습니다. 프로젝트 생성을 시작하고 디렉토리 구조를 붙여넣어 보겠습니다.
모듈 설명
public-api
公共接口模块(接口),供服务消费者和服务提供者调用。dubbo-provider
服务提供者模块(接口实现类),引入了public-api
模块dubbo-consumer
服务消费者模块(controller
),引入了public-api
模块父工程pom文件
<?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> <artifactId>spring-cloud-alibaba-example</artifactId> <groupId>ah.wideth</groupId> <version>1.0-SNAPSHOT</version> </parent> <modules> <module>public-api</module> <module>dubbo-provider</module> <module>dubbo-consumer</module> </modules> <artifactId>dubbo-nacos-example</artifactId> <name>dubbo-nacos-example</name> <description>duboo与nacos整合的父工程</description> <packaging>pom</packaging> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>utf-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <dubbo.version>2.7.13</dubbo.version> <nacos.version>1.4.1</nacos.version> </properties> <dependencies> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> <!--解决nacos-client2.0报错的问题--> <exclusions> <exclusion> <artifactId>nacos-client</artifactId> <groupId>com.alibaba.nacos</groupId> </exclusion> </exclusions> </dependency> <!--dubbo相关--> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>${dubbo.version}</version> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-registry-nacos</artifactId> <version>${dubbo.version}</version> </dependency> <dependency> <groupId>com.alibaba.nacos</groupId> <artifactId>nacos-client</artifactId> <version>${nacos.version}</version> </dependency> <!-- 解决dubbo2.7.13jar包冲突问题--> <dependency> <groupId>com.alibaba.spring</groupId> <artifactId>spring-context-support</artifactId> <version>1.0.11</version> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo</artifactId> <version>${dubbo.version}</version> <exclusions> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring</artifactId> </exclusion> <exclusion> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> </exclusion> <exclusion> <groupId>log4j</groupId> <artifactId>log4j</artifactId> </exclusion> </exclusions> </dependency> </dependencies> </project>
pom文件
<?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> <artifactId>dubbo-nacos-example</artifactId> <groupId>ah.wideth</groupId> <version>1.0-SNAPSHOT</version> </parent> <artifactId>public-api</artifactId> <name>public-api</name> <description>api公用接口</description> <packaging>jar</packaging> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>utf-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
公共接口模块里面只有一个接口,没有配置文件,打jar包
package ah.wideth.api; /** * 让生产者和服务消 * 费者来使用这个接口 */ public interface InfoService { String getInfo(); }
pom文件
<?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> <artifactId>dubbo-nacos-example</artifactId> <groupId>ah.wideth</groupId> <version>1.0-SNAPSHOT</version> </parent> <artifactId>dubbo-provider</artifactId> <name>dubbo-provider</name> <description>dubbo的服务提供者模块</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>utf-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--引入公共接口模块--> <dependency> <groupId>${project.groupId}</groupId> <artifactId>public-api</artifactId> <version>${project.version}</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
application.yml配置文件
server: port: 8180 spring: application: name: dubbo-provider dubbo: registry: address: nacos://127.0.0.1:8848 #注册地址 application: name: dubbo-provider #应用名 protocol: name: dubbo #dubbo协议 port: 20880 #协议端口 scan: base-packages: ah.wideth.impl #扫包范围 provider: timeout: 30000 #超时时间
接口实现类,该类实现了上面我们在公共接口模块创建的接口
package ah.wideth.impl; import ah.wideth.api.InfoService; import org.apache.dubbo.config.annotation.DubboService; import org.springframework.stereotype.Component; // dubbo提供的Service注解,用于声明对外暴露服务 // Service引入的是org.apache.dubbo.config.annotation.Service包 @Component @DubboService public class InfoServiceImpl implements InfoService { @Override public String getInfo() { return "hello,这里是dubbo-provider模块!"; } }
服务提供者启动类
package ah.wideth; import org.apache.dubbo.config.spring.context.annotation.EnableDubbo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; @EnableDubbo @EnableDiscoveryClient @SpringBootApplication public class DubboProviderApplication { public static void main(String[] args) { SpringApplication.run(DubboProviderApplication.class, args); System.out.println("dubbo服务提供者8180启动了"); } }
pom文件
<?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> <artifactId>dubbo-nacos-example</artifactId> <groupId>ah.wideth</groupId> <version>1.0-SNAPSHOT</version> </parent> <artifactId>dubbo-consumer</artifactId> <name>dubbo-consumer</name> <description>dubbo的服务消费者模块</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>utf-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--引入公共接口模块--> <dependency> <groupId>${project.groupId}</groupId> <artifactId>public-api</artifactId> <version>${project.version}</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
application.yml配置文件
server: port: 8181 spring: application: name: dubbo-consumer dubbo: registry: address: nacos://127.0.0.1:8848 #注册地址 application: name: dubbo-consumer #应用名 consumer: timeout: 30000 #超时时间
controller,调用公共接口模块创建的接口
package ah.wideth.controller; import ah.wideth.api.InfoService; import org.apache.dubbo.config.annotation.DubboReference; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class InfoController { //dumbo提供的Reference注解,用于调用远程服务 @DubboReference(check = false) private InfoService infoService; @GetMapping("/getInfo") public String getInfo(){ return infoService.getInfo(); } }
服务消费者启动类
package ah.wideth; import org.apache.dubbo.config.spring.context.annotation.EnableDubbo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; @EnableDubbo @EnableDiscoveryClient @SpringBootApplication public class DubboConsumerApplication { public static void main(String[] args) { SpringApplication.run(DubboConsumerApplication.class, args); System.out.println("dubbo服务消费者8181启动了"); } }
打开Nacos控制面板查看注册中心中的服务
启动nacos,启动服务提供者和服务消费者,调用服务消费者的getInfo方法,服务提供者会返回结果
本文编写了一个例子来对dubbo整合nacos进行服务调用的例子,不过要注意jar包的冲突问题。
위 내용은 SpringBoot+Dubbo+Nacos 개발 실습 튜토리얼의 상세 내용입니다. 자세한 내용은 PHP 중국어 웹사이트의 기타 관련 기사를 참조하세요!