参考
dubbo官网:https://cn.dubbo.apache.org/zh-cn/overview/quickstart/java/spring-boot/
他人博客:https://blog.youkuaiyun.com/weixin_59334478/article/details/126725073
dubbo官网的改了改,不好使。别人的博客参考了下,可用。
项目结构
- study:父模块,集中管理jar包版本等。api、provider、consumer是study的子模块
- api:只提供接口,供服务提供者、服务消费者使用。
- provider:服务提供者,依赖api模块。实现了api暴露的接口。
- consumer:服务消费者,依赖api模块。调用api暴露的接口。
工作实践中,若想使用A部门的接口,只需要依赖A部门的api jar包aaa.jar,然后通过rpc远程调用A部门的服务。而aaa.jar中只有接口,没有更多内容,避免过多暴露内容。暴露的内容越少,以后事儿越少,避免改东西还得考虑下游系统。
编码
-
在这个springboot集成dubbo的实例中,注册中心使用zookeeper,因此首先安装、启动zookeeper。
-
项目中需要一个父模块,集中管理公共内容,因此新建个项目study,里面依赖了springboot对应的jar,并通过dependencyManagement集中管理公共jar的版本。
-
api模块只需要提供接口,没有其他内容,因此非常简洁干净。
-
provider需要依赖api模块,并实现api对应的接口。需要集成dubbo,需要集成zookeeper作为注册中心。
-
consumer需要依赖api模块,调用api对应的接口。需要集成dubbo,需要集成zookeeper作为注册中心,需要集成web写controller做测试。
zookeeper
zookeeper安装、启动参考:https://blog.youkuaiyun.com/ludkjava/article/details/134628293
zookeeper内容看起来麻烦,可以再弄个图形化界面工具prettyzoo,看起来更直观。
prettyzoo安装参考:
父模块
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ludk</groupId>
<artifactId>study</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<!-- 子模块-->
<modules>
<module>provider</module>
<module>api</module>
<module>consumer</module>
</modules>
<properties>
<java.version>1.8</java.version>
<current.version>1.0-SNAPSHOT</current.version>
</properties>
<!-- springbootjar-->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.ludk</groupId>
<artifactId>api</artifactId>
<version>${current.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
</project>
api模块
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>study</artifactId>
<groupId>com.ludk</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.ludk</groupId>
<artifactId>api</artifactId>
<packaging>jar</packaging>
</project>
接口定义IAPIService
package com.ludk.service;
/**
* @author ludengke
* @title: IAPIService
* @projectName study
* @description: TODO
* @date 2023/11/2123:41
*/
public interface IAPIService {
String test(String from);
}
provider模块
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>study</artifactId>
<groupId>com.ludk</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.ludk</groupId>
<artifactId>provider</artifactId>
<packaging>jar</packaging>
<properties>
<dubbo.version>3.1.1</dubbo.version>
<zookeeper.version>3.1.1</zookeeper.version>
</properties>
<dependencies>
<!--加入公共项目的gav-->
<dependency>
<groupId>com.ludk</groupId>
<artifactId>api</artifactId>
<!-- <version>1.0-SNAPSHOT</version>-->
</dependency>
<!--dubbo依赖-->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>${dubbo.version}</version>
</dependency>
<!--zookeeper依赖:同时排除导入SLF4j依赖,以避免重复导入SLF4j依赖导致报错-->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-dependencies-zookeeper</artifactId>
<version>${zookeeper.version}</version>
<type>pom</type>
<exclusions>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<!--springboot的jar -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
配置文件application.properties
#配置服务名称:等同于dubbo:application name="名称"
spring.application.name=study-provider
#配置扫描的包,扫描的@DubboService
#dubbo.scan.base-packages=com.ludk.dubboprovider.service
#配置dubbo协议
#dubbo.protocol.name=name
#dubbo.protocol.port=20881
#注册中心
dubbo.registry.address=zookeeper://localhost:2181
接口实现类ProviderServiceImpl
package com.ludk.dubboprovider.service;
import com.ludk.service.IAPIService;
import org.apache.dubbo.config.annotation.DubboService;
import org.springframework.stereotype.Component;
/**
* @author ludengke
* @title: ProviderServiceImpl
* @projectName study
* @description: TODO
* @date 2023/11/2123:44
*/
@Component
@DubboService(interfaceClass = IAPIService.class,version = "2.6.0" ,timeout = 15000)
public class ProviderServiceImpl implements IAPIService {
@Override
public String test(String from) {
return "from"+from;
}
}
启动类ProviderApplication
package com.ludk.dubboprovider;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* @author ludengke
* @title: ProviderApplication
* @projectName study
* @description: TODO
* @date 2023/11/2122:13
*/
@SpringBootApplication
@EnableDubbo //开启dubbo配置
public class ProviderApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class,args);
}
}
consumer模块
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>study</artifactId>
<groupId>com.ludk</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>consumer</artifactId>
<properties>
<dubbo.version>3.1.1</dubbo.version>
<zookeeper.version>3.1.1</zookeeper.version>
</properties>
<dependencies>
<!--加入公共项目的gav-->
<dependency>
<groupId>com.ludk</groupId>
<artifactId>api</artifactId>
</dependency>
<!--dubbo依赖-->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>${dubbo.version}</version>
</dependency>
<!--zookeeper依赖:同时排除导入SLF4j依赖,以避免重复导入SLF4j依赖导致报错-->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-dependencies-zookeeper</artifactId>
<version>${zookeeper.version}</version>
<type>pom</type>
<exclusions>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
application.properties
#指定服务名称
spring.application.name=consumer-application
server.port=8081
#指定注册中心
dubbo.registry.address=zookeeper://localhost:2181
测试的Controller
package com.ludk.controller;
import com.ludk.service.IAPIService;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
/**
* @author ludengke
* @title: TestController
* @projectName study
* @description: TODO
* @date 2023/11/221:20
*/
@Controller
public class TestController {
@DubboReference(interfaceClass = IAPIService.class,version = "2.6.0",check = false)
private IAPIService service;
@RequestMapping("/test")
@ResponseBody
public String testInterface(){
return service.test("消费端");
}
}
消费端启动类
package com.ludk;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* @author ludengke
* @title: ConsumerApplication
* @projectName study
* @description: TODO
* @date 2023/11/221:23
*/
@SpringBootApplication
@EnableDubbo
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class,args);
}
}
验证
启动zookeeper
启动服务端
注册中心发现了provider服务
启动消费端
注册中心发现消费端服务
访问消费端的controller
源码链接
后面补