demo是在windows7 64bit、JDK7、idea2016的环境下。
demo的全部资料<a href=”http://pan.baidu.com/s/1slCpwML”>下载</a>
<h3> 0.说明</h3>
使用Dubbo分布式服务框架开发一个服务要将服务分成服务逻辑模块、服务提供者、服务消费者三个快来进行开发,zookeeper做为注册中心,服务提供者为服务资源提供方会向注册中心注册,服务消费者到注册中心找对应服务消费。
从开发使用角度看来,需要实现3个模块,分别是服务逻辑块service、服务提供者provider、服务消费者customer,customer负责像外提供接口。
Paste_Image.png
</br>
<h3> 1.下载zookeeper解压后到conf配置文件夹下将zoo_sample.cfg
复制一份命名为zoo.cfg
,zookeeper启动时会加载这个配置文件。到bin目录下点击zkServer.cmd
启动zookeeper。</h3>
Paste_Image.png
Paste_Image.png
</br>
</br>
<h3> 2.tomcat配置dubbo-admin项目</h3>
下载一个dubbo-admin项目解压到tomcat的webapps目录下,可以正常访问就好,dubbo-admin用于管理dubbo服务。登录管理账号密码都是是root,可以在WEB-INFO下的dubbo.properties
中修改密码。
Paste_Image.png
</br>
</br>
<h3> 3.开始编写 dubbo Demo 模拟搭建一个服务模块</h3>
idea创建一个maven管理的项目,然后创建4个module。
module1:dubbo_api 只提供接口,普通module。
module2:dubbo_service 服务逻辑的真正实现,普通module。
module3:dubbo_provider 服务提供者,需要打成war包使用选择create from archetype,创建下图中的webapp archertype。
module4:dubbo_customer 服务消费者,需要打成war包使用选择create from archetype,创建下图中的webapp archertype。
Paste_Image.png
Paste_Image.png
idea配置好各个module的源文件、资源等。
<h5> 一:在dubbo_api中创建了一个TestService接口有两个抽象方法。</h5>
Paste_Image.png
</br>
</br>
<h5> 二:在dubbo_service模块中引入dubbo_service模块,实现服务接口。在idea中直接写个类去实现这个接口然后alt+enter导入模块再按一次导包即可。</h5>
Paste_Image.png
</br>
</br>
<h5> 三:作为服务提供者的dubbo_provider模块需引入具体实现服务逻辑的dubbo_service以及spring、json解析工具、dubbo分布式服务框架(主角)、zookeeper(二号)等。</h5>
A.首先在该模块的配置文件pom.xml
中引入支持项。
<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">
<parent>
<artifactId>dubbo_demo</artifactId>
<groupId>cn.thinglin</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dubbo_provider</artifactId>
<packaging>war</packaging>
<name>dubbo_provider Maven Webapp</name>
<url>http://maven.apache.org</url>
<build>
<finalName>dubbo_provider</finalName>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<org.springframework.version>4.2.5.RELEASE</org.springframework.version>
</properties>
<dependencies>
<dependency>
<groupId>cn.thinglin</groupId>
<artifactId>dubbo_service</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.12</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.12</version>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
<exclusions>
<exclusion>
<artifactId>spring</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.8</version>
<exclusions>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
<version>0.1</version>
</dependency>
</dependencies>
</project>
</br>
B.在resources下创建application.xml
配置文件,配置spring信息
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd"
default-lazy-init="false">
<mvc:annotation-driven >
<!-- 消息转换器 -->
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes" value="text/html;charset=UTF-8"/>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 中文乱码解决 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" >
<property name="messageConverters">
<list>
<bean class = "org.springframework.http.converter.StringHttpMessageConverter">
<property name = "supportedMediaTypes">
<list>
<value>text/plain;charset=UTF-8</value>
</list>
</property>
</bean>
</list>
</property>
</bean>
</beans>
</br>
C.在resources下创建配置文件dubbo_provider.xml
,配置zookeeper与dubbo、提供的服务接口的信息
<?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:p="http://www.springframework.org/schema/p"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.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="test_provider" />
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<!-- 用dubbo协议在20880端口暴露服务 -->
<dubbo:protocol name="dubbo" />
<!-- 声明需要暴露的服务接口 -->
<dubbo:service interface="cn.thinglin.dubbodemo.service.TestService" ref="testService" />
<!-- 具体的实现bean -->
<bean id="testService" class="cn.thinglin.dubbodemo.service.impl.TestServiceImpl" />
</beans>
</br>
D.配置该模块的web.xml,其实就是要在其中配置spring的入口servlet以及加载的配置文件等等
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>dubbo_provider</display-name>
<description>dubbo_provider test</description>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:dubbo_provider.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dubbo_provider_Servlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:application.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dubbo_provider_Servlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
</br>
</br>
<h5> 四:服务消费者dubbo_customer模块</h5>
这个模块是要去远程调用服务提供者提供的服务所以也需要以来dubbo以及zookeeper,而它自己本身则是要被用户调用,所以需要提供接口给前台,也依赖了spring
Paste_Image.png
</br>
A.在resources下创建dubbo_consumer.xml
配置文件,配置dubbo、zookeeper信息
<?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:p="http://www.springframework.org/schema/p"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.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="test_consumer" />
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<!-- 声明需要暴露的服务接口 -->
<dubbo:reference interface="cn.thinglin.dubbodemo.service.TestService" id="testService" check="false" />
</beans>
</br>
B.resoureces下创建application.xml
配置文件,配置spring信息,扫描action
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd"
default-lazy-init="false">
<mvc:annotation-driven >
<!-- 消息转换器 -->
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes" value="text/html;charset=UTF-8"/>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 中文乱码解决 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" >
<property name="messageConverters">
<list>
<bean class = "org.springframework.http.converter.StringHttpMessageConverter">
<property name = "supportedMediaTypes">
<list>
<value>text/plain;charset=UTF-8</value>
</list>
</property>
</bean>
</list>
</property>
</bean>
<context:component-scan base-package="cn.thinglin.action"/>
</beans>
</br>
C:配置web.xml,还是为了springmvc的servlet拦截请求分发给我们实现的action
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>dubbo_consumer</display-name>
<description>dubbo_consumer test</description>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:dubbo_consumer.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>testServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:application.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>testServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
</br>
D.实现一个action,TestController,提供两个接口
package cn.thinglin.action;
import cn.thinglin.dubbodemo.service.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
/**
* Created by mac on 2017/3/20.
*/
@Controller
public class TestController {
@Autowired
private TestService testService;
@RequestMapping("/test.do")
public void sayDubbo(){
testService.test();
}
@RequestMapping("/tests.do")
@ResponseBody
public String testString(String str){
String s = testService.testString(str);
return s;
}
}
</br>
</br>
<h5> 五.将dubbo_customer与dubbo_provider打成war包</h5>
provider的war包在放到端口是8081的tomcat容器之后可以在dubbo-admin的服务管理中观察到,但是还没有消费者。
Paste_Image.png
Paste_Image.png
将消费者customer的war包放到另外一个端口为8082的tomcat容器后刷新这个这面,就显示正常了。
</br>
<h5> 六.测试</h5>
访问action,提供消费者的是8082端口的容器,访问8082端口。
http://localhost:8082/dubbo_customer/test.do
test1.gif
http://localhost:8082/dubbo_customer/tests.do?str=str
test2s.gif
</br>
</br>
</br>