dubbo_分布式Rpc服务

dubbo是一个分布式的服务架构，可直接用于生产环境作为SOA服务或Rpc服务
1.下载，编译，运行demo
  1).安装zookeeper
    下载：http://apache.claz.org/zookeeper/
    配置  conf/zoo.cfg
　　tickTime=2000
　　initLimit=10
　　syncLimit=5
　　dataDir=D:/java/zookeeper-3.4.6/data
　　dataLogDir=D:/java/zookeeper-3.4.6/log
　　clientPort=2181
　　#server.1=localhost:2287:3387

   启动

　　bin/zkServer.cmd 启用zookeeper
  2).下载dubbo
　　git clone https://github.com/dangdangdotcom/dubbox
　　mvn install -Dmaven.test.skip=true 跳过测试编译
  3).运行demo
　　运行服务提供方，zk里多出了一个dubbo的节点，服务全注册
　　dubboxdubbo-demodubbo-demo-providersrc estjavacomalibabadubbodemoproviderDemoProvider.java
　　运行服务消费方调用测试
　　dubboxdubbo-demodubbo-demo-consumersrc estjavacomalibabadubbodemoconsumerDemoConsumer.java
　　rest调用
　　dubboxdubbo-demodubbo-demo-consumersrc estjavacomalibabadubbodemoconsumerRestClient.java
　　浏览器访问
　　http://localhost:8888/services/users/100.xml 或 http://localhost:8888/services/users/100.json

2.简单demo
　1).公用对象和接口
　　User     

package cn.com.hello;

import java.io.Serializable;

public class User implements Serializable {
    private static final long serialVersionUID = 1L;
    private int age;
    private String name;
    private String sex;

    public User() {
        super();
    }

    public User(int age, String name, String sex) {
        super();
        this.age = age;
        this.name = name;
        this.sex = sex;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

}

　　UserService

package cn.com.hello;

import java.util.List;

public interface UserService {

    String sayHello(String name);

    public List<User> getUsers();

}

   2).生产者Provider
　　实现UserServiceImpl 

package cn.com.hello.provider.impl;

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

import com.alibaba.dubbo.config.annotation.Service;

import cn.com.hello.UserService;
import cn.com.hello.User;

//@Service
public class UserServiceImpl implements UserService {

    public String sayHello(String name) {
        return "Hello " + name;
    }

    public List<User> getUsers() {
        List<User> list = new ArrayList<User>();
        User u1 = new User();
        u1.setName("jack");
        u1.setAge(20);
        u1.setSex("m");

        User u2 = new User();
        u2.setName("tom");
        u2.setAge(21);
        u2.setSex("m");

        User u3 = new User();
        u3.setName("rose");
        u3.setAge(19);
        u3.setSex("w");

        list.add(u1);
        list.add(u2);
        list.add(u3);
        return list;
    }
}

　　配置dubbo-provider.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">

    <!-- 提供方应用信息，用于计算依赖关系 -->
    <dubbo:application name="provider-helloworld" />

    <!-- 使用 multicast广播注册中心暴露服务地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181" check="false" subscribe="false" register=""></dubbo:registry>
    
    <!-- 用dubbo协议在20880端口暴露服务    -->
    <dubbo:protocol name="dubbo" server="grizzly" port="20880" />
 
    <!-- 声明需要暴露的服务接口 -->
    <dubbo:service interface="cn.com.hello.UserService" ref="userService" />

    <!-- 和本地bean一样实现服务 -->
    <bean id="userService" class="cn.com.hello.provider.impl.UserServiceImpl" />

</beans>

　　启动 Provider 

package cn.com.hello.provider;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Provider {

    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "dubbo-provider.xml" });
        context.start();
        System.in.read(); // 为保证服务一直开着，利用输入流的阻塞来模拟
    }
}

   3).消费者Consumer

　　配置 dubbo-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://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">

    <!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->
    <dubbo:application name="consumer-helloworld" />

    <!-- 使用multicast广播注册中心暴露发现服务地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />

    <!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
    <dubbo:reference id="userService" interface="cn.com.hello.UserService" />
 
</beans>

　　启动 Consumer 

package cn.com.hello.consumer;
import java.util.List;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import cn.com.hello.UserService;
public class Consumer {
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "dubbo-consumer.xml" });
        context.start();

        UserService userService = (UserService) context.getBean("userService");
        String hello = userService.sayHello("guoxue");
        System.out.println(hello);

        List list = userService.getUsers();
        if (list != null && list.size() > 0) {
            for (int i = 0; i < list.size(); i++) {
                System.out.println(list.get(i));
            }
        }
         System.in.read();
    }

}

   4).依赖jar

　　pom.xml

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>cn.com.hello</groupId>
    <artifactId>dubbo-hello</artifactId>
    <packaging>jar</packaging>
    <version>1.0.0</version>
    <properties>
        <spring_version>4.1.6.RELEASE</spring_version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring_version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring_version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring_version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring_version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring_version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring_version}</version>
        </dependency>
        <dependency>
            <groupId>org.javassist</groupId>
            <artifactId>javassist</artifactId>
            <version>3.20.0-GA</version>
        </dependency>
        <dependency>
            <groupId>grizzly</groupId>
            <artifactId>grizzly</artifactId>
            <version>1.0.28</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-server</artifactId>
            <version>9.3.5.v20151012</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>2.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-frontend-jaxws</artifactId>
            <version>3.1.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.thrift</groupId>
            <artifactId>libthrift</artifactId>
            <version>0.9.3</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.8.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.6</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
        </dependency>
        <!-- log -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.14</version>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.6.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.6.1</version>
        </dependency>
        <!-- log end -->

        <!-- TODO move versions into properties -->
        <dependency>
            <groupId>javax.ws.rs</groupId>
            <artifactId>javax.ws.rs-api</artifactId>
            <version>2.0</version>
        </dependency>
        <dependency>
            <groupId>org.jboss.resteasy</groupId>
            <artifactId>resteasy-jaxrs</artifactId>
            <version>3.0.7.Final</version>
        </dependency>
        <dependency>
            <groupId>org.jboss.resteasy</groupId>
            <artifactId>resteasy-client</artifactId>
            <version>3.0.7.Final</version>
        </dependency>
        <dependency>
            <groupId>org.jboss.resteasy</groupId>
            <artifactId>resteasy-netty</artifactId>
            <version>3.0.7.Final</version>
        </dependency>
        <dependency>
            <groupId>org.jboss.resteasy</groupId>
            <artifactId>resteasy-jdk-http</artifactId>
            <version>3.0.7.Final</version>
        </dependency>
        <dependency>
            <groupId>org.jboss.resteasy</groupId>
            <artifactId>resteasy-jackson-provider</artifactId>
            <version>3.0.7.Final</version>
        </dependency>
        <dependency>
            <groupId>org.jboss.resteasy</groupId>
            <artifactId>resteasy-jaxb-provider</artifactId>
            <version>3.0.7.Final</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.grizzly</groupId>
            <artifactId>grizzly-core</artifactId>
            <version>2.1.4</version>
        </dependency>
    </dependencies>
    <build>
        <finalName>dubbo-hello</finalName>
    </build>
</project>

   5).日志