springboot整合dubbo的简单案例

使用框架:

  jdk 1.8

  springboot-2.1.3

  dubbo-2.6

  spring-data-jpa-2.1.5

一、开发dubbo服务接口:

按照Dubbo官方开发建议,创建一个接口项目,该项目只定义接口和model类;

1、创建springboot工程 spring-boot-demo-dubbo-interface

坐标:

<groupId>com.example</groupId>
<artifactId>spring-boot-demo-dubbo-interface</artifactId>
<version>0.0.1-SNAPSHOT</version>

添加spring-data-jpa 依赖:

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

2、创建model

package com.example.demo.model;

@Entity
public class User implements Serializable{
private static final long serialVersionUID = 1L; @Id @GeneratedValue
private long id;
private String userName;
private String password;
private int age;
public long getId() {
return id;
}
//省略set get 方法

3、创建接口:

package com.example.demo.service;

import com.example.demo.model.User;

public interface UserService {

    public void save(User user);

    public String sayHello(String word);
}

4、使用命令  clean install   打包安装到maven仓库。

阿里巴巴提供的dubbo集成springboot开源项目;

参考文档:

https://github.com/apache/dubbo-spring-boot-project/blob/0.2.x/README_CN.md

本工程采用该项目的jar包进行继承:

<dependency>
<groupId>com.alibaba.boot</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>0.2.0</version>
</dependency>

二、开发dubbo服务提供者:

1、创建一个Springboot项目spring-boot-demo-dubbo-provider并配置好相关的依赖;

pom.xml

<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> <!-- 加入springboot与dubbo集成的起步依赖 -->
<dependency>
<groupId>com.alibaba.boot</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>0.2.0</version>
</dependency> <!-- 由于使用了zookeeper作为注册中心,则需要加入zookeeper的客户端jar包: -->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency> <!-- spring-data-jpa -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency> <dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency> <!-- 添加接口服务 -->
<dependency>
<groupId>com.example</groupId>
<artifactId>spring-boot-demo-dubbo-interface</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>

2、在Springboot的核心配置文件application.properties中配置dubbo的信息:

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.username=root
spring.datasource.password=root spring.jpa.properties.hibernate.hbm2ddl.auto=create
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.properties.hibernate.format_sql=true
spring.jpa.show-sql=true # 访问端口
server.port=8080
# dubbo配置
dubbo.application.name=springboot-dubbo-provider
dubbo.registry.address=zookeeper://192.168.146.128:2181

3、开发编写Dubbo的接口实现类:

package com.example.demo.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component; import com.alibaba.dubbo.config.annotation.Service;
import com.example.demo.model.User;
import com.example.demo.repository.UserRepository; @Component //注册为spring bean
@Service // 这注解是dubbo提供的
public class UserServiceImpl implements UserService { @Autowired
private UserRepository userRepository; @Override
public void save(User user) {
userRepository.save(user);
} @Override
public String sayHello(String word) {
return word;
}
}

4、入口main程序启动Dubbo服务提供者:添加注解 @EnableDubbo

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication; import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo; @SpringBootApplication
@EnableDubbo
public class SpringBootDemoDubboProviderApplication { public static void main(String[] args) {
SpringApplication.run(SpringBootDemoDubboProviderApplication.class, args);
} }

启动main ,服务发布到zookeeper 注册中心。

三、开发dubbo服务消费者:

1、创建一个Springboot项目spring-boot-demo-dubbo-consumer并配置好相关的依赖;

2、加入springboot与dubbo集成的起步依赖:(pom.xml 配置同上)

 注意: 服务提供者 和 消费者都要配置 服务接口依赖

3、在Springboot的核心配置文件application.properties中配置dubbo的信息:

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.username=root
spring.datasource.password=root # WEB\u670D\u52A1\u7AEF\u53E3
server.port=8081
# dubbo\u914D\u7F6E
dubbo.application.name=springboot-dubbo-consumer
dubbo.registry.address=zookeeper://192.168.146.128:2181

4、编写一个Controller类,调用远程的Dubbo服务:

package com.example.demo.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; import com.alibaba.dubbo.config.annotation.Reference;
import com.example.demo.model.User;
import com.example.demo.service.UserService; @RestController
public class UserController { @Reference //该注解是dubbo提供的
private UserService userService; @RequestMapping("/say")
public String sayHello(String name) {
return userService.sayHello(name);
} @RequestMapping("/save")
public void save() {
User u = new User();
u.setAge(20);
u.setPassword("123");
u.setUserName("zheng");
userService.save(u);
}
}

5、启动类添加 开启dubbo 注解 @EnableDubbo

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo; @SpringBootApplication
@EnableDubbo
public class SpringBootDemoDubboConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootDemoDubboConsumerApplication.class, args);
}
}

6、启动main方法。

7、调用远程接口:

http://localhost:8081/say?name=hello

一个简单的springboot基于dubbo的服务接口开发完成。  
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