Dubbo入门教程

桃扇骨 2024-04-18 09:49 76阅读 0赞

## 服务端（dubbo-server） ##

## 1. 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.lwb</groupId>
        <artifactId>dubbo-server</artifactId>
        <version>1.0-SNAPSHOT</version>
        <packaging>jar</packaging>
     
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        </properties>
     
        <dependencies>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>4.1.6.RELEASE</version>
            </dependency>
            
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>dubbo</artifactId>
                <version>2.5.3</version>
            </dependency>
            
            
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>3.3.6</version>
            </dependency>
            
            
            <dependency>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
                <version>1.1.1</version>
            </dependency>
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.15</version>
                <exclusions>
                    <exclusion>
                        <groupId>com.sun.jdmk</groupId>
                        <artifactId>jmxtools</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>com.sun.jmx</groupId>
                        <artifactId>jmxri</artifactId>
                    </exclusion>
                    <exclusion>
                        <artifactId>jms</artifactId>
                        <groupId>javax.jms</groupId>
                    </exclusion>
                    <exclusion>
                        <artifactId>mail</artifactId>
                        <groupId>javax.mail</groupId>
                    </exclusion>
                </exclusions>
            </dependency>
            
            
            <dependency>
                <groupId>org.jboss.netty</groupId>
                <artifactId>netty</artifactId>
                <version>3.2.0.Final</version>
            </dependency>
            <dependency>
                <groupId>com.101tec</groupId>
                <artifactId>zkclient</artifactId>
                <version>0.8</version>
            </dependency>
            
        </dependencies>
    </project>

## 2. dubbo.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://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
     
        <dubbo:application name="dubbo-server" owner="lwb" />
        
        <dubbo:registry address="zookeeper://127.0.0.1:2181" />
        <dubbo:protocol contextpath="dubbo" port="20881" />
        <dubbo:monitor protocol="registry"/>
     
        
        <bean id="elasticService" class="com.lwb.service.impl.ElasticServiceImpl" />
     
        
        <dubbo:service interface="com.lwb.service.ElasticService" ref="elasticService" protocol="dubbo" timeout="50000"/>

## 3. 代码 ##

package com.lwb.service;
     
    /** * @author liuweibo * @date 2018/5/9 */
    public interface ElasticService { 
     
        String helloDubbo(String msg);
    }

package com.lwb.service.impl;
    
    import com.lwb.service.ElasticService;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.stereotype.Service;
    
    /** * @author liuweibo * @date 2018/5/9 */
    public class ElasticServiceImpl implements ElasticService { 
    
        private static final Logger LOGGER = LoggerFactory.getLogger(ElasticServiceImpl.class);
    
        public String helloDubbo(String msg) { 
            System.out.println(msg);
            return "hi!" + msg;
        }
    }

## 4. 项目结构 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpa3VucGVuZzY2NTYyMDE_size_16_color_FFFFFF_t_70]

## 5. 启动类（Application.java） ##

## 这里就直接用main方法启动了 ##

package com.lwb;
     
    import org.springframework.context.support.ClassPathXmlApplicationContext;
     
    import java.io.IOException;
     
    /** * @author liuweibo * @date 2018/5/9 */
    public class Application { 
        public static void main(String[] args) throws IOException { 
     
            ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] {  "dubbo.xml" });
            context.start();
            System.out.println("任意按键退出");
            System.in.read();
            context.close();
        }
    }

## 客户端（dubbo-client） ##

## 1. 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.lwb</groupId>
        <artifactId>dubbo-client</artifactId>
        <version>1.0-SNAPSHOT</version>
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        </properties>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>4.1.6.RELEASE</version>
            </dependency>
            
    
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>dubbo</artifactId>
                <version>2.5.3</version>
            </dependency>
            
    
            
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>3.3.6</version>
            </dependency>
            
    
            
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.15</version>
                <exclusions>
                    <exclusion>
                        <groupId>com.sun.jdmk</groupId>
                        <artifactId>jmxtools</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>com.sun.jmx</groupId>
                        <artifactId>jmxri</artifactId>
                    </exclusion>
                    <exclusion>
                        <artifactId>jms</artifactId>
                        <groupId>javax.jms</groupId>
                    </exclusion>
                    <exclusion>
                        <artifactId>mail</artifactId>
                        <groupId>javax.mail</groupId>
                    </exclusion>
                </exclusions>
            </dependency>
            
    
            
            <dependency>
                <groupId>com.101tec</groupId>
                <artifactId>zkclient</artifactId>
                <version>0.8</version>
            </dependency>
            <dependency>
                <groupId>com.lwb</groupId>
                <artifactId>dubbo-server</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            
        </dependencies>
        
    </project>

## 2. dubbo.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://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
     
        <dubbo:application name="consumer-of-dubbo-demo" />
     
        <dubbo:registry address="zookeeper://127.0.0.1:2181" />
     
        
        <dubbo:reference id="elasticService" interface="com.lwb.service.ElasticService" />
     
    </beans>

## 3. 服务调用（这里为了简单，就在main方法里面处理了哈，Application.java） ##

package com.lwb;
     
    import com.lwb.service.ElasticService;
    import com.lwb.service.impl.ElasticServiceImpl;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
     
    /** * @author liuweibo * @date 2018/5/9 */
    public class Application { 
     
        public static void main(String[] args) { 
            ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
                    new String[] {  "dubbo.xml" });
            context.start();
            ElasticService service = (ElasticService) context.getBean("elasticService");
            System.out.println(service.helloDubbo("world"));
            context.close();
        }
    }

## 4. 项目结构 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpa3VucGVuZzY2NTYyMDE_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpa3VucGVuZzY2NTYyMDE_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/be5fa7ca6de0473f97ddfc6a1b6b3893.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpa3VucGVuZzY2NTYyMDE_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/051fcfd986744db0a0a52598a5f86780.png