Dubbo之HelloWorld

「爱情、让人受尽委屈。」 2022-07-16 04:51 177阅读 0赞

**生产者的项目结构：**

![这里写图片描述][20161006151103729]

**消费者的项目结构：**

![这里写图片描述][20161006151131186]

**生产者项目的具体内容：**

**pom.xml依赖的jar**

<dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>dubbo</artifactId>
                <version>2.5.3</version>
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
    
            
            <dependency>
                <groupId>com.101tec</groupId>
                <artifactId>zkclient</artifactId>
                <version>0.5</version>
                <exclusions>
                    <exclusion>
                        <groupId>org.apache.zookeeper</groupId>
                        <artifactId>zookeeper</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>3.4.6</version>
            </dependency>

注:依赖的Spring的jar略…详见：[http://blog.csdn.net/w\_x\_z\_/article/details/52705153][http_blog.csdn.net_w_x_z_article_details_52705153]

**User.java**

public class User implements Serializable{ 
    
        private static final long serialVersionUID = 1L;
    
        private String id;
    
        private String userName;
    
        private Integer age;
    
        // setter和getter
        //..
    }

**UserService.java 接口**

public interface UserService {
    
        String saveUser(User user);
    
        List<User> findAll();
    }

**UserServiceImpl.java 实现类**

@Service("userService")
    public class UserServiceImpl implements UserService { 
    
        public static List<User> userList = new ArrayList<User>();
    
        @Override
        public String saveUser(User user) {
            userList.add(user);
            return user.getId();
        }
    
        @Override
        public List<User> findAll() {
            return userList;
        }
    }

**Main.java**

public class Main {
    
        public static void main(String[] args) throws IOException {
    
            ApplicationContext ctx = new ClassPathXmlApplicationContext("spring.xml");
    
            System.out.println("服务端:服务启动...");
            System.in.read();
        }
    }

**spring.xml 配置文件**

<?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:context="http://www.springframework.org/schema/context" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" 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.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    
        
        <import resource="classpath:spring-*.xml"/>
    
        
        <context:property-placeholder ignore-unresolvable="true" location="classpath:config.properties" />
    
        <bean id="userService" class="com.netant.service.impl.UserServiceImpl" />
    </beans>

**spring-dubbo.xml 配置文件**

<?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:context="http://www.springframework.org/schema/context" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" 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.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    
        
        <dubbo:application name="Dubbo_HelloWorld" />
    
        
        <dubbo:registry protocol="zookeeper" address="${zookeeper.connect}"/>
    
        
        <dubbo:protocol name="dubbo" port="20880" />
    
        
        <dubbo:service interface="com.netant.service.UserService" ref="userService" protocol="dubbo" timeout="5000000"/>
    
    </beans>

**消费者项目的具体内容：**

需要依赖生产者提供的实体类User.java和UserService接口

**UserAccess.java**

通过此类调用UserService提供的服务

@Component
    public class UserAccess { 
    
        @Autowired
        private UserService userService;
    
        public String saveUser(String id ,String userName ,Integer age){
            User user = new User();
            user.setId(id);
            user.setUserName(userName);
            user.setAge(age);
            return userService.saveUser(user);
        }
    
        public List<User> findAllUser(){
            return userService.findAll();
        }
    
    }

**Main.java**

public class Main {
    
        public static void main(String[] args) throws IOException {
    
            ApplicationContext ctx = new ClassPathXmlApplicationContext("spring.xml");
    
            UserAccess userAccess = ctx.getBean(UserAccess.class);
    
    // String userId = userAccess.saveUser("456", "Jack1", 20);
    // 
    // System.out.println("保存用户成功之后返回的userId：" + userId);
    
            List<User> userList = userAccess.findAllUser();
    
            for (User user : userList) {
                System.out.println("遍历获取的所有用户信息:" + user.getId() + " " + user.getUserName());
            }
        }
    
    }

**spring.xml 配置文件**

<?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:context="http://www.springframework.org/schema/context" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" 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.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
        
        <context:component-scan base-package="com.netant" />
    
        
        <import resource="classpath:spring-*.xml"/>
    
        
        <context:property-placeholder ignore-unresolvable="true" location="classpath:config.properties" />
    
        <bean id="userAccess" class="com.netant.UserAccess" />
    </beans>

**spring-dubbo.xml 配置文件**

<?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:context="http://www.springframework.org/schema/context" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" 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.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    
        
        <dubbo:application name="Dubbo_HelloWorld_Ref" />
    
        
        <dubbo:registry protocol="zookeeper" address="${zookeeper.connect}"/>
    
        
        <dubbo:protocol name="dubbo" port="20881" />
    
       
        <dubbo:reference id="userService" interface="com.netant.service.UserService" protocol="dubbo" check="false" retries="0"/>
    
    </beans>

[20161006151103729]: /images/20220716/92a9166ba4a441c39f66d0c9b354620c.png
[20161006151131186]: /images/20220716/e1f5dc32e81340429345c5dddbff8a95.png
[http_blog.csdn.net_w_x_z_article_details_52705153]: http://blog.csdn.net/w_x_z_/article/details/52705153