Dubbo 的简单应用

左手的ㄟ右手 2022-03-10 03:14 214阅读 0赞

>            以下结合Dubbo的官方文档，写了一个Dubbo的简单应用，包括注册中心、消费者和生产者的关系调用。

**一、公共配置：api工程 **

1.  为了方便消费者和生成着的服务调用，采用分包的思想，抽取抽取公共配置，公共接口和公共模型等。api模块图示如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x2aGFvZ3Vhbmcw_size_16_color_FFFFFF_t_70][]

2.api/UserAddress.java

package com.nyist.api.model;
    
    import java.io.Serializable;
    
    /**
     * 用户地址
     * @author lhg
     *
     */
    public class UserAddress implements Serializable {
    	
    	private Integer id;
        private String userAddress; //用户地址
        private String userId; //用户id
        private String consignee; //收货人
        private String phoneNum; //电话号码
        private String isDefault; //是否为默认地址    Y-是     N-否
        
        public UserAddress() {
    		super();
    		// TODO Auto-generated constructor stub
    	}
        
    	public UserAddress(Integer id, String userAddress, String userId, String consignee, String phoneNum,
                           String isDefault) {
    		super();
    		this.id = id;
    		this.userAddress = userAddress;
    		this.userId = userId;
    		this.consignee = consignee;
    		this.phoneNum = phoneNum;
    		this.isDefault = isDefault;
    	}
    	
    	public Integer getId() {
    		return id;
    	}
    	public void setId(Integer id) {
    		this.id = id;
    	}
    	public String getUserAddress() {
    		return userAddress;
    	}
    	public void setUserAddress(String userAddress) {
    		this.userAddress = userAddress;
    	}
    	public String getUserId() {
    		return userId;
    	}
    	public void setUserId(String userId) {
    		this.userId = userId;
    	}
    	public String getConsignee() {
    		return consignee;
    	}
    	public void setConsignee(String consignee) {
    		this.consignee = consignee;
    	}
    	public String getPhoneNum() {
    		return phoneNum;
    	}
    	public void setPhoneNum(String phoneNum) {
    		this.phoneNum = phoneNum;
    	}
    	public String getIsDefault() {
    		return isDefault;
    	}
    	public void setIsDefault(String isDefault) {
    		this.isDefault = isDefault;
    	}
    
    	@Override
    	public String toString() {
    		return "UserAddress [id=" + id + ", userAddress=" + userAddress + ", userId=" + userId + ", consignee="
    				+ consignee + ", phoneNum=" + phoneNum + ", isDefault=" + isDefault + "]";
    	}
        
    }

3.service包下的类

package com.nyist.api.service;
    
    
    import com.nyist.api.model.UserAddress;
    
    import java.util.List;
    
    
    public interface OrderService {
    	
    	/**
    	 * 初始化订单
    	 * @param userId
    	 */
    	public List<UserAddress> initOrder(String userId);
    
    }

package com.nyist.api.service;
    
    
    
    import com.nyist.api.model.UserAddress;
    
    import java.util.List;
    
    /**
     * 用户接口
     */
    public interface UserService {
    	
    	/**
    	 * 按照用户id返回所有的收货地址
    	 * @param userId
    	 * @return
    	 */
    	public List<UserAddress> getUserAddressList(String userId);
    }

**二、produce工程(生产者)**

1.工程结构大致如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x2aGFvZ3Vhbmcw_size_16_color_FFFFFF_t_70 1][]

2.provider.xml配置

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans        
    		http://www.springframework.org/schema/beans/spring-beans-4.3.xsd        
    		http://dubbo.apache.org/schema/dubbo        
    		http://dubbo.apache.org/schema/dubbo/dubbo.xsd">
    
    	
    	<dubbo:application name="produce"></dubbo:application>
    	
    	
    	
    	<dubbo:registry protocol="zookeeper" address="localhost:2181"></dubbo:registry>
    	
    	
    	<dubbo:protocol name="dubbo" port="20080"></dubbo:protocol>
    
    	
    	<dubbo:service interface="com.nyist.api.service.UserService" ref="userServiceImpl"></dubbo:service>
    	
    	
    	<bean id="userServiceImpl" class="com.nyist.produce.service.UserServiceImpl"></bean>
    	
    	
    </beans>

3.UserServiceImpl.java实现

package com.nyist.produce.service;
    
    import java.util.Arrays;
    import java.util.List;
    
    import com.nyist.api.model.UserAddress;
    import com.nyist.api.service.UserService;
    
    public class UserServiceImpl implements UserService {
        @Override
        public List<UserAddress> getUserAddressList(String userId) {
            UserAddress userAddress = new UserAddress(1,"北京市朝阳区","1","吕老师","1803931xxx","Y");
            UserAddress userAddress1 = new UserAddress(2,"广东省深圳市","1","吕爸爸","1803931xxxx","N");
            return Arrays.asList(userAddress,userAddress1);
        }
    }

4.测试

MainApplication.java

package com.nyist.produce;
    
    import java.io.IOException;
    
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    public class MainApplication {
    	
    	public static void main(String[] args) throws IOException{
    		ClassPathXmlApplicationContext ioc = new ClassPathXmlApplicationContext("provider.xml");
    		ioc.start();
    		System.in.read();
    	}
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x2aGFvZ3Vhbmcw_size_16_color_FFFFFF_t_70 2][]

**三、consumer 工程(消费者)**

1.工程结构如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x2aGFvZ3Vhbmcw_size_16_color_FFFFFF_t_70 3][]

2.OrderServiceImpl.java如下：

package com.nyist.consumer.ServiceImpl;
    
    import java.util.Arrays;
    import java.util.List;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import com.nyist.api.model.UserAddress;
    import com.nyist.api.service.OrderService;
    import com.nyist.api.service.UserService;
    /**
     * 1.将服务提供者注册到注册中心(如何暴露服务)
     * 		1.导入Dubbo依赖(2.6.2)
     * 		2.配置服务
     * 2.让服务消费者去服务中心订阅提供者订阅服务
     * 		
     * @author lhg
     *
     */
    @Service
    public class OrderServiceImpl implements OrderService {
    
    	@Autowired
    	private UserService userService;
    	
        @Override
        public List<UserAddress> initOrder(String userId) {
        	System.out.println("用户ID:"+userId);
        	List<UserAddress> addresses = userService.getUserAddressList(userId);
            for (UserAddress userAddress : addresses) {
    			System.out.println(userAddress);
    		}
        	return addresses;
        }
    }

3.consumer.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
    		http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd
    		http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">	
     	
    	<context:component-scan base-package="com.nyist.consumer.ServiceImpl"></context:component-scan>
     	
     	
     	<dubbo:application name="consumer"></dubbo:application>
     	
     	
     	<dubbo:registry protocol="zookeeper" address="localhost:2181"></dubbo:registry>
     	
     	
     	<dubbo:reference interface="com.nyist.api.service.UserService" id="userService"></dubbo:reference>
    </beans>

4.pom.xml文件

<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.nyist</groupId>
      <artifactId>consumer</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <build/>
      <dependencies>
      	<dependency>
      		<groupId>com.nyist</groupId>
      		<artifactId>api</artifactId>
      		<version>0.0.1-SNAPSHOT</version>
      	</dependency>
      	
      	
    	  <dependency>
    		    <groupId>com.alibaba</groupId>
    		    <artifactId>dubbo</artifactId>
    		    <version>2.6.2</version>
    	   </dependency>
    	   
    	   
    	   
    		
             <dependency>
                 <groupId>org.apache.curator</groupId>
                 <artifactId>curator-framework</artifactId>
                 <version>2.12.0</version>
             </dependency>
      </dependencies>
    </project>

5.测试

MainApplication.java

package com.nyist.consumer;
    
    import java.io.IOException;
    
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    import com.nyist.api.service.OrderService;
    
    public class MainApplication {
    	
    	public static void main(String[] args) throws IOException {
    		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("consumer.xml");
    		OrderService orderService = context.getBean(OrderService.class);
    		orderService.initOrder("1");
    		System.out.println("调用完成！！！");
    		System.in.read();
    	}
    }

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### **源码下载：[下载][Link 1]** ###

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[Link 1]: https://download.csdn.net/download/lvhaoguang0/11008019