Dubbo and Spring Integrated demo

Zookeeper Installation and startup

• http://mirrors.hust.edu.cn/apache/zookeeper/download, my version is 3.4.5.

• Unzip to D:\zookeeper-3.4.5

• Configuration

  To the directory conf create the Zoo.cfg file, the default is to load this file, the contents of the file I copy directly inside the sample

  Zoo.cfg's Content
  # Heartbeat Check Time 2 seconds
  ticktime=2000
  # Number of connections to server-side interval initialized, total time 10*2=20 seconds
  initlimit=10
  # The number of communications between ZK Leader and follower, total time 5*2=10 seconds
  Synclimit=5
  # Store the location of the database snapshot in memory, and if you do not set the parameter, the update transaction log will be stored in the default location.
  Datadir=d:\zk\tmp\zookeeper
  # where error logs are stored
  Datalogdir=d:\zk\logs\zookeeper
  # ZK Server-side listening port
  clientport=2181

• Run

  The CD then executes the Zkserver.cmd in the bin directory and the boot succeeds. Use the JPS command-line command to verify that the zookeeper started successfully.

Dubbo Service Registration

建立WEB项目，引入相应Jar文件。

配置web.xml文件

<?xml version= "1.0" encoding= "UTF-8"?><Web-appXmlns:xsi="Http://www.w3.org/2001/XMLSchema-instance"xmlns="Http://java.sun.com/xml/ns/javaee"xmlns:web="Http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"xsi:schemalocation="Http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"Id="WEBAPP_ID"version="3.0" ><Display-name>dubbo-service</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><Context-param><Param-name>contextconfiglocation</Param-name><Param-value> Web-inf/dubbo-provider.xml</Param-value></Context-param><Listener><Listener-class>org.springframework.web.context.contextloaderlistener</Listener-class></Listener><Filter><Filter-name>characterencodingfilter</Filter-name><Filter-class>org.springframework.web.filter.characterencodingfilter</Filter-class><Init-param><Param-name>encoding</Param-name><Param-value>utf-8</Param-value></Init-param><Init-param><Param-name>forceencoding</param-name> <param-value>true </param-value> </init-param> </filter> <filter-mapping> <filter-name>characterencodingfilter</ filter-name> <url-pattern>/* </url-pattern> </ Filter-mapping></WEB-APP>      

写服务类：接口：

public Span class= "Hljs-class" >interface idemoservice {/** * * * @Function: Com.test.dubbo.service.IDemoService.sayHello * @Description: * * @param name * @return Name String * * @version: v1.0 * @author: CJQ * @date: 2015-4-30 pm 5:45:30 * * Modification History: * Date Author Version Description *--------- --------------------------------------------------------* 2015-4-30 CJQ v1.0.0 Create */ public string sayhello (string name);         

实现：

public class DemoServiceImpl implements IDemoService { /* * (non-Javadoc) * * @see com.test.dubbo.service.IDemoService#sayHello(java.lang.String) */ public String sayHello(String name) { return "Hello Dubbo,Hello " + name; }}

注册服务：新建dubbo-provider.xml文件，文件内容为：

<?xml version= "1.0" encoding= "UTF-8"?><Beansxmlns="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 "><!--provider application information for computing dependencies--<Dubbo:applicationName="Dubbo-service"/><!--use the multicast broadcast registry to expose the service address--<!--<dubbo:registry address= "multicast://224.5.6.7:1234"/>--<!--Use the Zookeeper registry to expose the service address--<Dubbo:registryaddress="Zookeeper://xxxx:2181"/><!--exposed at 20880 ports with the Dubbo protocol--< dubbo:protocol name= "Dubbo" port= "20880"/> <!--declares service interfaces that need to be exposed --<dubbo:service interface=  "Com.test.dubbo.service.IDemoService" ref=  "Demoservice"/> <!--and local beans as a service--<bean id=" Demoservice "class=" Com.test.dubbo.service.impl.DemoServiceImpl "/></beans >                 

部署启动服务：

Dubbo Service Invocation

新建WEB或者普通JAVA工程，引入Dubbo服务注册项目中的jar文件。需要导入一个服务接口（从上个程序中导入接口的jar并且导入到此项目中。）配置web.xml文件（和上工程一样），编写调用配置文件dubbo-consumer.xml文件，内容如下：

<?xml version= "1.0" encoding= "UTF-8"?><Beansxmlns="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 "><!--provider application information for computing dependencies--<Dubbo:applicationname="Dubbo-service-consumer"/> <!--use multicast broadcast registry to expose service addresses- <!--<dubbo: Registry address= "multicast://224.5.6.7:1234"/>- <!--using zookeeper registry to expose service addresses- <Dubbo : Registry address="zookeeper://xxxx:2181"/> <!--declaration of service interfaces to be exposed-- <dubbo:reference id= "demoservice" interface="Com.test.dubbo.service.IDemoService"/></Beans >                 

编写测试代码：

/** * Copyright (C) 2015 * * *@className: Com.test.dubbo.consumer.ConsumerTest *@description: TODO * *@version: v1.0.0 *@author: CJQ * * Modification History: * Date author Version Description *----------------------------------------------- ------------------* 2015-4-30 CJQ v1.0.0 Create * * * *Package Com.test.dubbo.consumer;Import Org.springframework.context.support.ClassPathXmlApplicationContext;import Com.test.dubbo.service.IDemoService; public class consumertest { public static void main (string[] args) { Classpathxmlapplicationcontext context = new Classpathxmlapplicationcontext ( "file:d:/javaworkspace/ Dubbo-service-consumer/webcontent/web-inf/dubbo-consumer.xml "); Context.start (); Idemoservice Demoservice = (idemoservice) context.getbean ("Demoservice"); //Get remote service proxy String hello = Demoservice.sayhello ("World"); //Execute remote method System.out.println (hello);}}             

Dubbo Service Invocation Results

调用测试代码，执行结果为：

Dubbo Introduction End

如果你在做分布式系统的话，不妨用一下这个技术。

Dubbo and Spring Integrated demo