springboot整合dubbo

 一、安装并启动zookeeper

参考资料：https://blog.csdn.net/tlk20071/article/details/52028945

二、创建springboot-dubbo项目

项目结构

 

项目名称为springboot-dubbo，包含springboot-dubbo-consumer、springboot-dubbo-provider两个模块。

第一步：新建springboot-dubbo项目

File -> New -> Project -> Spring Initializr

   

如下图：输入Group、Artifact等信息，Type选择Maven Pom 

 

然后一直点击Next,最后Finish即可。

最后项目生成后结构只有一个pom.xml文件，无src目录，如下图

 

  

第二步：新建springboot-dubbo-provider模块

完整pom.xml如下：

<?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.lnjecit</groupId>
    <artifactId>springboot-dubbo-provider</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
        <relativePath/>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <dubbo-spring-boot-starter.version>0.2.0</dubbo-spring-boot-starter.version>
    </properties>

    <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>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>${dubbo-spring-boot-starter.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

application.properties配置如下：

server.port=8080
# Dubbo Config properties
dubbo.application.name=springboot-dubbo-provider
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
dubbo.registry.address=zookeeper://localhost:2181
dubbo.scan.basePackages=com.lnjecit.service.impl

定义接口：UserService

package com.lnjecit.service;

import java.util.List;

/**
 * @author lnj
 * createTime 2018-11-05 20:55
 **/
public interface UserService {
    List<String> query();
}

定义接口实现类：UserServiceImpl 

package com.lnjecit.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.lnjecit.service.UserService;

import java.util.ArrayList;
import java.util.List;

/**
 * @author lnj
 * createTime 2018-11-05 20:56
 **/
@Service
public class UserServiceImpl implements UserService {
    @Override
    public List<String> query() {
        List<String> userList = new ArrayList<>();
        userList.add("李白");
        userList.add("杜甫");
        userList.add("白居易");
        return userList;
    }
}

启动类SpringbootDubboProviderApplication ：

package com.lnjecit;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringbootDubboProviderApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootDubboProviderApplication.class, args);
    }
}

  运行UserApplication类，启动服务。

第三步：新建springboot-dubbo-consumer模块

 完整pom.xml如下： 

<?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.lnjecit</groupId>
    <artifactId>springboot-dubbo-consumer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>springboot-dubbo-consumer</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <dubbo-spring-boot-starter.version>0.2.0</dubbo-spring-boot-starter.version>
    </properties>

    <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>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>${dubbo-spring-boot-starter.version}</version>
        </dependency>
        <dependency>
            <groupId>com.lnjecit</groupId>
            <artifactId>springboot-dubbo-provider</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

定义UserController类：

package com.lnjecit.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.lnjecit.service.UserService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * @author lnj
 * createTime 2018-11-05 21:09
 **/
@RequestMapping("user")
@RestController
public class UserController {
    @Reference
    private UserService userService;

    @GetMapping("list")
    public List<String> list() {
        return userService.query();
    }
}

启动类SpringbootDubboConsumerApplication ：

package com.lnjecit;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringbootDubboConsumerApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootDubboConsumerApplication.class, args);
    }
}

  运行SpringbootDubboProviderApplication类，启动服务。

测试

提供者和消费者服务启动后，在浏览器中输入：http://localhost:8081/user/list，可看到如下信息

 项目地址

https://github.com/linj6/springboot-learn/tree/master/springboot-dubbo

参考资料

https://juejin.im/post/5b21d6696fb9a01e4e5e6e63