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框架dubbox的简单使用

之前：

　　RPC: Remote Produedure Call :一种通过网络从远程计算机程序上请求服务，而不需要了解底层网络技术的协议

　　SOA: Service-oriented architecture 面向服务的体系结构（SOA）是一个组件模型，它将应用程序的不同功能单元（称为服务）通过这些服务之间定义良好的接口和契约联系起来。接口是采用中立的方式进行定义的，它应该独立于实现服务的硬件平台、操作系统和编程语言。

　　zooKeeper: 引用官方的说法：“Zookeeper是一个高性能，分布式的，开源分布式应用协调服务。它提供了简单原始的功能，分布式应用可以基于它实现更高级的服务，比如同步，配置管理，集群管理，名空间。

　　Dubbo是一个来自阿里巴巴的开源分布式服务框架;

　　DubboX是当当根据自身的需求，为Dubbo实现了一些新的功能，包括REST风格远程调用、Kryo/FST序列化等等；

使用Dubbox搭建Demo:

　　服务端：

　　1、工程结构：

　　2、ivy.xml配置：主要引入Dubbox和spring.日志等相关jar；

<?xml version="1.0" encoding="UTF-8"?>
<ivy-module version="2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:noNamespaceSchemaLocation="http://ant.apache.org/ivy/schemas/ivy.xsd">
      <info
        organisation="com.dubbox.service"
        module="dubbox-services"
        status="integration">
    </info>
    
    <configurations>
        <conf name="default" visibility="public" description="runtime dependencies and master artifact can be used with this conf" extends="runtime,master"/>
        <conf name="master" visibility="public" description="contains only the artifact published by this module itself, with no transitive dependencies"/>
        <conf name="compile" visibility="public" description="this is the default scope, used if none is specified. Compile dependencies are available in all classpaths."/>
        <conf name="provided" visibility="public" description="this is much like compile, but indicates you expect the JDK or a container to provide it. It is only available on the compilation classpath, and is not transitive."/>
        <conf name="runtime" visibility="public" description="this scope indicates that the dependency is not required for compilation, but is for execution. It is in the runtime and test classpaths, but not the compile classpath." extends="compile"/>
        <conf name="test" visibility="private" description="this scope indicates that the dependency is not required for normal use of the application, and is only available for the test compilation and execution phases." extends="runtime"/>
        <conf name="system" visibility="public" description="this scope is similar to provided except that you have to provide the JAR which contains it explicitly. The artifact is always available and is not looked up in a repository."/>
        <conf name="sources" visibility="public" description="this configuration contains the source artifact of this module, if any."/>
        <conf name="javadoc" visibility="public" description="this configuration contains the javadoc artifact of this module, if any."/>
        <conf name="optional" visibility="public" description="contains all optional dependencies"/>
    </configurations>
    <dependencies>
        <!-- Spring 相关内容 -->
        <dependency org="org.springframework" name="spring-core" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-beans" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-web" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-webmvc" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-context" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-context-support" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-aop" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-expression" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-tx" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-jms" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-messaging" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-jdbc" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="aopalliance" name="aopalliance" rev="1.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
           <dependency org="com.sun.xml.fastinfoset" name="FastInfoset" rev="1.2.13" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
           <dependency org="cglib" name="cglib-nodep" rev="3.1" conf="compile->compile(*),master(*);runtime->runtime(*)" />
           <dependency org="org.aspectj" name="aspectjrt" rev="1.8.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.aspectj" name="aspectjweaver" rev="1.8.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- Apache Commons -->
        <dependency org="commons-codec" name="commons-codec" rev="1.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="commons-pool" name="commons-pool" rev="1.6" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="commons-io" name="commons-io" rev="2.4" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="commons-net" name="commons-net" rev="3.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- JSR303 Validation -->
        <dependency org="javax.validation" name="validation-api" rev="1.1.0.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.hibernate" name="hibernate-validator" rev="5.1.3.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml" name="classmate" rev="1.1.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- json序列化相关 -->
        <dependency org="com.fasterxml.jackson.core" name="jackson-core" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml.jackson.core" name="jackson-annotations" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml.jackson.core" name="jackson-databind" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- Log 相关内容 -->
        <dependency org="org.slf4j" name="slf4j-api" rev="1.7.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.slf4j" name="jcl-over-slf4j" rev="1.7.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.slf4j" name="jul-to-slf4j" rev="1.7.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.slf4j" name="log4j-over-slf4j" rev="1.7.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="ch.qos.logback" name="logback-classic" rev="1.1.2" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="ch.qos.logback" name="logback-core" rev="1.1.2" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.jboss.logging" name="jboss-logging" rev="3.2.1.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- DobboX -->
        <dependency org="com.alibaba" name= "dubbo" rev="2.8.4" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="io.netty" name="netty" rev="3.10.5.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.google.guava" name="guava" rev="19.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
          <dependency org="com.101tec" name="zkclient" rev="0.7" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
          <dependency org="org.javassist" name="javassist" rev="3.20.0-GA" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>    
        <dependency org="org.jboss.resteasy" name="resteasy-jaxrs" rev="3.0.14.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.jboss.resteasy" name="resteasy-client" rev="3.0.14.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.jboss.resteasy" name="resteasy-jackson2-provider" rev="3.0.14.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.jboss.resteasy" name="jaxrs-api" rev="3.0.12.Final" />
        <dependency org="com.fasterxml.jackson.jaxrs" name="jackson-jaxrs-json-provider" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml.jackson.jaxrs" name="jackson-jaxrs-base" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml.jackson.module" name="jackson-module-jaxb-annotations" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="de.javakaffee" name="kryo-serializers" rev="0.41" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.esotericsoftware" name="kryo" rev="4.0.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.esotericsoftware" name="reflectasm" rev="1.11.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.ow2.asm" name="asm" rev="5.0.4" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.objenesis" name="objenesis" rev="2.4" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.esotericsoftware" name="minlog" rev="1.3.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- Http 客户端 -->
        <dependency org="org.apache.httpcomponents" name="httpclient" rev="4.4.1" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.apache.httpcomponents" name="httpcore" rev="4.4.1" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.apache.httpcomponents" name="httpmime" rev="4.4.1" transitive="false"/>
        <!-- ZooKeeper -->
        <dependency org="org.apache.zookeeper" name="zookeeper" rev="3.4.8" transitive="false"/>
        <!-- 其他: Web容器自带 -->
        <dependency org="javax.el" name="javax.el-api" rev="3.0.0" conf="provided->*" transitive="false"/>
        <dependency org="javax.servlet" name="javax.servlet-api" rev="3.1.0" conf="provided->*" transitive="false"/>
    </dependencies>
</ivy-module>

ivy.xml

　　3、web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="core-services" version="3.0">
    <display-name>dubbox-services</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <!-- Spring -->
    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>WEB-INF/dubbox.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
</web-app>

web.xml

　　4、dubbox.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: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:property-placeholder />

    <!-- 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="dubbox-services" />

    <!-- 使用zookeeper注册中心暴露服务地址 -->
    <dubbo:registry protocol="zookeeper" address="${zkHost:127.0.0.1:2181}" />

    <!-- 用dubbo协议暴露服务 -->
    <dubbo:protocol name="dubbo" port="${dubbo.port:20880}" />

    <!-- 调用的服务时的公共配置 -->
    <dubbo:consumer check="${dubbo.client.check:false}" retries="${dubbo.client.retries:0}"
        timeout="${dubbo.client.timeout:5000}" />
        
    <dubbo:service ref="demoService" interface="com.dubbox.service.DemoService"></dubbo:service>

    <import resource="classpath:com/dubbox/service/beans.xml"/>
</beans>

　　5、beans.xml与服务接口与实现类：

<?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:task="http://www.springframework.org/schema/task"
    xmlns:elasticsearch="http://www.springframework.org/schema/data/elasticsearch"
    xsi:schemaLocation="http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context.xsd
          http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans.xsd">

    <context:property-placeholder />

    <context:annotation-config />

    <context:component-scan base-package="com.dubbox.service" />
    
    <bean id="demoService" class="com.dubbox.service.DemoServiceImpl" />
    
</beans>

View Code

package com.dubbox.service;

public interface DemoService {
    
    public String greet(String name);

}

package com.dubbox.service;

public class DemoServiceImpl implements DemoService{

    @Override
    public String greet(String name) {
        return "HI, "+name;
    }

}

以上是服务端所有代码,只写了一个方法，用于测试远程调用。其中最主要文件是dubbox.xml,在其中配置需要发布的接口；

　　客户端：

　　1、工程结构：

　　需要说明的是d-s.jar是以上服务端打成的jar包，放到了lib下面直接引用；

　　2、ivy.xml:几乎与服务端一样

<?xml version="1.0" encoding="UTF-8"?>
<ivy-module version="2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:noNamespaceSchemaLocation="http://ant.apache.org/ivy/schemas/ivy.xsd">
      <info
        organisation="com.dubbox.client"
        module="dubbox-client"
        status="integration">
    </info>
    
    <configurations>
        <conf name="default" visibility="public" description="runtime dependencies and master artifact can be used with this conf" extends="runtime,master"/>
        <conf name="master" visibility="public" description="contains only the artifact published by this module itself, with no transitive dependencies"/>
        <conf name="compile" visibility="public" description="this is the default scope, used if none is specified. Compile dependencies are available in all classpaths."/>
        <conf name="provided" visibility="public" description="this is much like compile, but indicates you expect the JDK or a container to provide it. It is only available on the compilation classpath, and is not transitive."/>
        <conf name="runtime" visibility="public" description="this scope indicates that the dependency is not required for compilation, but is for execution. It is in the runtime and test classpaths, but not the compile classpath." extends="compile"/>
        <conf name="test" visibility="private" description="this scope indicates that the dependency is not required for normal use of the application, and is only available for the test compilation and execution phases." extends="runtime"/>
        <conf name="system" visibility="public" description="this scope is similar to provided except that you have to provide the JAR which contains it explicitly. The artifact is always available and is not looked up in a repository."/>
        <conf name="sources" visibility="public" description="this configuration contains the source artifact of this module, if any."/>
        <conf name="javadoc" visibility="public" description="this configuration contains the javadoc artifact of this module, if any."/>
        <conf name="optional" visibility="public" description="contains all optional dependencies"/>
    </configurations>
    
    <dependencies>
        <!-- Spring 相关内容 -->
        <dependency org="org.springframework" name="spring-core" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-beans" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-web" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-webmvc" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-context" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-context-support" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-aop" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-expression" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-tx" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-jms" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-messaging" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.springframework" name="spring-jdbc" rev="4.2.5.RELEASE" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="aopalliance" name="aopalliance" rev="1.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
           <dependency org="com.sun.xml.fastinfoset" name="FastInfoset" rev="1.2.13" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
           <dependency org="cglib" name="cglib-nodep" rev="3.1" conf="compile->compile(*),master(*);runtime->runtime(*)" />
           <dependency org="org.aspectj" name="aspectjrt" rev="1.8.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.aspectj" name="aspectjweaver" rev="1.8.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- Apache Commons -->
        <dependency org="commons-codec" name="commons-codec" rev="1.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="commons-pool" name="commons-pool" rev="1.6" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="commons-io" name="commons-io" rev="2.4" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="commons-net" name="commons-net" rev="3.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- JSR303 Validation -->
        <dependency org="javax.validation" name="validation-api" rev="1.1.0.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.hibernate" name="hibernate-validator" rev="5.1.3.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml" name="classmate" rev="1.1.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- json序列化相关 -->
        <dependency org="com.fasterxml.jackson.core" name="jackson-core" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml.jackson.core" name="jackson-annotations" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml.jackson.core" name="jackson-databind" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- Log 相关内容 -->
        <dependency org="org.slf4j" name="slf4j-api" rev="1.7.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.slf4j" name="jcl-over-slf4j" rev="1.7.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.slf4j" name="jul-to-slf4j" rev="1.7.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.slf4j" name="log4j-over-slf4j" rev="1.7.10" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="ch.qos.logback" name="logback-classic" rev="1.1.2" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="ch.qos.logback" name="logback-core" rev="1.1.2" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.jboss.logging" name="jboss-logging" rev="3.2.1.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- DobboX -->
        <dependency org="com.alibaba" name= "dubbo" rev="2.8.4" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="io.netty" name="netty" rev="3.10.5.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.google.guava" name="guava" rev="19.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
          <dependency org="com.101tec" name="zkclient" rev="0.7" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
          <dependency org="org.javassist" name="javassist" rev="3.20.0-GA" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>    
        <dependency org="org.jboss.resteasy" name="resteasy-jaxrs" rev="3.0.14.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.jboss.resteasy" name="resteasy-client" rev="3.0.14.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.jboss.resteasy" name="resteasy-jackson2-provider" rev="3.0.14.Final" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.jboss.resteasy" name="jaxrs-api" rev="3.0.12.Final" />
        <dependency org="com.fasterxml.jackson.jaxrs" name="jackson-jaxrs-json-provider" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml.jackson.jaxrs" name="jackson-jaxrs-base" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.fasterxml.jackson.module" name="jackson-module-jaxb-annotations" rev="2.7.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="de.javakaffee" name="kryo-serializers" rev="0.41" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.esotericsoftware" name="kryo" rev="4.0.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.esotericsoftware" name="reflectasm" rev="1.11.3" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.ow2.asm" name="asm" rev="5.0.4" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.objenesis" name="objenesis" rev="2.4" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="com.esotericsoftware" name="minlog" rev="1.3.0" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <!-- Http 客户端 -->
        <dependency org="org.apache.httpcomponents" name="httpclient" rev="4.4.1" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.apache.httpcomponents" name="httpcore" rev="4.4.1" conf="compile->compile(*),master(*);runtime->runtime(*)" transitive="false"/>
        <dependency org="org.apache.httpcomponents" name="httpmime" rev="4.4.1" transitive="false"/>
        <!-- ZooKeeper -->
        <dependency org="org.apache.zookeeper" name="zookeeper" rev="3.4.8" transitive="false"/>
        <!-- 其他: Web容器自带 -->
        <dependency org="javax.el" name="javax.el-api" rev="3.0.0" conf="provided->*" transitive="false"/>
        <dependency org="javax.servlet" name="javax.servlet-api" rev="3.1.0" conf="provided->*" transitive="false"/>
    </dependencies>
</ivy-module>

ivy.xml

　　3、web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="core-services" version="3.0">
    <display-name>d-c</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <!-- Spring -->
    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>WEB-INF/beans.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
</web-app>

web.xml

　　4、beans.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:context="http://www.springframework.org/schema/context"
    xmlns:task="http://www.springframework.org/schema/task"
    xmlns:elasticsearch="http://www.springframework.org/schema/data/elasticsearch"
    xsi:schemaLocation="http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context.xsd
          http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans.xsd">

    <context:property-placeholder />

    <context:annotation-config />
    
    <context:component-scan base-package="com.dubbox.client" />
    
    <import resource="dubbox.xml" />
    
    <import resource="classpath:com/dubbox/service/beans.xml"/>
    
</beans>

　　5、dubbox.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: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:property-placeholder />

    <!-- 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="dubbox-client" />

    <!-- 使用zookeeper注册中心暴露服务地址 -->
    <dubbo:registry protocol="zookeeper" address="${zkHost:127.0.0.1:2181}" />

    <!-- 调用的服务时的公共配置 -->
    <dubbo:consumer
        check="${dubbo.client.check:false}"
        retries="${dubbo.client.retries:0}"
        timeout="${dubbo.client.timeout:5000}" />
        
    <dubbo:reference id="demoService" interface="com.dubbox.service.DemoService" />
        

</beans>

　　5、DemoClient.java:

package com.dubbox.client;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.dubbox.service.DemoService;

@RestController
@RequestMapping(value="/api")
public class DemoClient {
    
    @Autowired
    DemoService _demoService;
    
    @RequestMapping(value="/greet")
    public String greet(@RequestParam("name") String name){
        System.out.println(_demoService.greet(name));
        return _demoService.greet(name);
    }

}

　　以上是客户端的全部代码，引用了服务端的xml文件获取接口；

测试Demo

　　1、启动zookeeper:

　　　　如开始所述，这是dubbox.xml所需的，用于注册服务；

　　　　下载zookeeper: 官网地址：http://zookeeper.apache.org/，解压文件，可能需要简单配置，点击bin文件夹下的zkServer.cmd,启动zookeeper；等待启动服务端和客户端；

　　2、启动服务端：

　　　　部署启动，ZooKeeper会收到消息；

　　3、启动客户端：

　　　　输入地址：http://ip:port/dubbox-client/api/greet?name='test',输出成功；

　　4、结束：

　　　　只是一个Demo而已;

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原文地址：https://www.cnblogs.com/liangblog/p/6165070.html