Dubbo

1. boot-dubbo-api：

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.jcx.boot.dubbo.demo</groupId>
    <artifactId>boot-dubbo-api</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.10</version>
        </dependency>
    </dependencies>

</project>

dao：

package com.jcx.boot.dubbo.demo.dao;

import lombok.*;

import java.io.Serializable;

@Getter
@Setter
@AllArgsConstructor
@NoArgsConstructor
@ToString
public class User implements Serializable {

    private Integer id;

    private String name;

    private Integer age;

    private String address;

}

Service：

package com.jcx.boot.dubbo.demo.service;

import com.jcx.boot.dubbo.demo.dao.User;

import java.util.List;

public interface IUserService {

    List<User> getUser(Integer id);

}

package com.jcx.boot.dubbo.demo.service;

import com.jcx.boot.dubbo.demo.dao.User;

import java.util.List;

public interface IOrderService {

    List<User> initUser(Integer id);

}

2. boot-dubbo-provider：

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.jcx.boot.dubbo.demo</groupId>
    <artifactId>boot-dubbo-provider</artifactId>
    <version>1.0-SNAPSHOT</version>

    <name>boot-dubbo-provider</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.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>
    </properties>

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

        <dependency>
            <groupId>com.jcx.boot.dubbo.demo</groupId>
            <artifactId>boot-dubbo-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

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

service.impl：

package com.jcx.boot.dubbo.demo.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.jcx.boot.dubbo.demo.dao.User;
import com.jcx.boot.dubbo.demo.service.IUserService;
import org.springframework.stereotype.Component;

import java.util.Arrays;
import java.util.List;

@Service
@Component
public class UserServiceImpl implements IUserService {

    public List<User> getUser(Integer id) {
        User user1 = new User(1, "张三", 18, "西安");
        User user2 = new User(2, "李四", 20, "北京");
        return Arrays.asList(user1, user2);
    }
}

ProviderApplication：

package com.jcx.boot.dubbo.demo;

import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@EnableDubbo
@SpringBootApplication
public class ProviderApplication {

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

application.properties：

dubbo.application.name=boot-dubbo-provider
dubbo.registry.address=127.0.0.1:2181
dubbo.registry.protocol=zookeeper

dubbo.protocol.name=dubbo
dubbo.protocol.port=20880

dubbo.monitor.protocol=registry

3. dubbo-consumer：

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.jcx.boot.dubbo.demo</groupId>
    <artifactId>boot-dubbo-consumer</artifactId>
    <version>1.0-SNAPSHOT</version>

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

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.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>
    </properties>

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

        <dependency>
            <groupId>com.jcx.boot.dubbo.demo</groupId>
            <artifactId>boot-dubbo-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </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>

service.impl：

package com.jcx.boot.dubbo.demo.service.impl;

import com.alibaba.dubbo.config.annotation.Reference;
import com.jcx.boot.dubbo.demo.dao.User;
import com.jcx.boot.dubbo.demo.service.IOrderService;
import com.jcx.boot.dubbo.demo.service.IUserService;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class OrderServiceImpl implements IOrderService {

    @Reference
    IUserService userService;

    @Override
    public List<User> initUser(Integer id) {
        System.out.println("用户id：" + id);
        List<User> users = userService.getUser(id);
        for (User user : users) {
            System.out.println(user);
        }
        return users;
    }
}

controller：

package com.jcx.boot.dubbo.demo.controller;

import com.jcx.boot.dubbo.demo.dao.User;
import com.jcx.boot.dubbo.demo.service.IOrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;

@Controller
public class OrderController {

    @Autowired
    IOrderService orderService;

    @ResponseBody
    @RequestMapping("/init")
    public List<User> initOrder(@RequestParam("id") Integer id) {
        List<User> users = orderService.initUser(id);
        return users;
    }
}

ConsumerApplication：

package com.jcx.boot.dubbo.demo;

import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@EnableDubbo
@SpringBootApplication
public class ConsumerApplication {

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

application.properties：

server.port=8081

dubbo.application.name=boot-dubbo-consumer
dubbo.registry.address=zookeeper://127.0.0.1:2181

dubbo.monitor.protocol=registry

浏览器访问：localhost:8081/init?id=1

页面出现json结果：[{"id":1,"name":"张三","age":18,"address":"西安"},{"id":2,"name":"李四","age":20,"address":"北京"}]