Dubbo HelloWord 与 Spring Boot 整合
实现消费者项目代码调用提供者项目代码，使用 zookeeper 做为注册中心
interface 项目
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>dubbo</groupId>
<artifactId>demo-interface</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version> <build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
接口
package org.apache.dubbo.demo;
public interface DemoService {
String sayHello(String name);
}
项目结构
Provider 提供者项目
基本 springboot 项目，不用添加任何模块（starter）
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>dubbo</groupId>
<artifactId>demo-boot-provider</artifactId>
<version>0.0.1-SNAPSHOT</version> <name>demo-boot-provider</name>
<description>demo-boot-provider</description> <properties>
<java.version>1.8</java.version>
<spring-boot.version>2.1.4.RELEASE</spring-boot.version>
<dubbo.version>2.7.1</dubbo.version>
</properties> <!--版本管理-->
<dependencyManagement>
<dependencies>
<!-- Spring Boot -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency> <!-- Apache Dubbo -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-dependencies-bom</artifactId>
<version>${dubbo.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency> <dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
<version>${dubbo.version}</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</dependencyManagement> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency> <dependency>
<groupId>dubbo</groupId>
<artifactId>demo-interface</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency> <dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>2.7.1</version>
</dependency> <dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
</dependency> <dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-dependencies-zookeeper</artifactId>
<version>${dubbo.version}</version>
<type>pom</type>
</dependency>
</dependencies> <build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
配置，application.properties
#1、指定当前服务/应用的名字（同样的服务名字相同，不要和别的服务同名）
dubbo.application.name=demo-provider
dubbo.application.qos-enable=true
dubbo.application.qos-port=22222
dubbo.application.qos-accept-foreign-ip=false #2、指定注册中心的位置
dubbo.registry.protocol=zookeeper
dubbo.registry.address=127.0.0.1:2181 #3、指定通信规则（通信协议？通信端口）
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
接口实现
package dubbo.demo.boot.provider.service.impl; import org.apache.dubbo.config.annotation.Service;
import org.apache.dubbo.demo.DemoService;
import org.springframework.stereotype.Component; @Service //暴露服务，非 spring 的注解
@Component
public class DemoServiceImpl implements DemoService { @Override
public String sayHello(String name) {
System.out.println("Hello " + name + ", request from consumer: ");
return "Hello " + name + ", response from provider: ";
}
}
启动类
package dubbo.demo.boot.provider; import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication; @EnableDubbo // 开启 Dubbo
@SpringBootApplication
public class DemoBootProviderApplication { public static void main(String[] args) {
SpringApplication.run(DemoBootProviderApplication.class, args);
}
}
项目结构
Consumer 消费者项目
创建时加入 web 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>dubbo</groupId>
<artifactId>demo-boot-consumer</artifactId>
<version>0.0.1-SNAPSHOT</version> <name>demo-boot-consumer</name>
<description>demo-boot-consumer</description> <properties>
<java.version>1.8</java.version>
<spring-boot.version>2.1.4.RELEASE</spring-boot.version>
<dubbo.version>2.7.1</dubbo.version>
</properties> <!--版本管理-->
<dependencyManagement>
<dependencies>
<!-- Spring Boot -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency> <!-- Apache Dubbo -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-dependencies-bom</artifactId>
<version>${dubbo.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
<version>${dubbo.version}</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</dependencyManagement> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency> <dependency>
<groupId>dubbo</groupId>
<artifactId>demo-interface</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency> <dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>2.7.1</version>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-dependencies-zookeeper</artifactId>
<version>${dubbo.version}</version>
<type>pom</type>
</dependency>
</dependencies> <build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
配置，application.properties
#1、指定当前服务/应用的名字（同样的服务名字相同，不要和别的服务同名）
dubbo.application.name=demo-consumer
dubbo.application.qos-enable=true
dubbo.application.qos-port=33333
dubbo.application.qos-accept-foreign-ip=false #2、指定注册中心的位置
dubbo.registry.protocol=zookeeper
dubbo.registry.address=127.0.0.1:2181 #3、指定通信规则（通信协议？通信端口）
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
controller 层
package dubbo.demo.boot.consumer.controller; import org.apache.dubbo.config.annotation.Reference;
import org.apache.dubbo.demo.DemoService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody; @Controller
public class Consumer { @Reference // 引用服务
private DemoService demoService; @ResponseBody
@RequestMapping("test")
public String test() {
return demoService.sayHello("world");
}
}
启动类
package dubbo.demo.boot.consumer; import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication; @EnableDubbo // 开启 Dubbo
@SpringBootApplication
public class DemoBootConsumerApplication { public static void main(String[] args) {
SpringApplication.run(DemoBootConsumerApplication.class, args);
}
}
项目结构
测试
先启动提供者，再启动消费者，最后访问 http://127.0.0.1:8080/test
https://github.com/apache/incubator-dubbo-spring-boot-project
http://dubbo.apache.org/zh-cn/docs/user/configuration/annotation.html
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