SSM架构改造成Dubbo分布式架构

目录

一：前言

二：开始改造

2.1接下来我们将表现层和服务层分开。

2.1.1首先将e3-manager-web从项目引用中删除

2.1.2在e3-manager的pom文件中将e3-manager-web模块的引用删除

2.1.3在工作区找到e3-manager-web，将其复制到和e3-manager同级目录 

 2.2修改e3-manager-service pom文件，修改打包方式为war，并且添加dubbo依赖

2.3修改e3-manager-service pom文件，修改e3-manager-service依赖改为e3-manager-interface，添加Dubbo依赖，配置tomcat插件

2.4相关的配置文件修改

三：测试改造结果

---

一：前言

简单的ssm架构在上线时可以满足用户量比较小的项目。随着项目的做大，我们就需要使用分布式架构来增加项目的效率。这里使用Dubbo服务治理工具+zookeeper注册中心来改造ssm架构。

二：开始改造

 在之前，我已经搭建好了一个SSM架构，目录结构如下，service打包成jar包，web打包成war包。

e3-manager是独立的maven project 下面所有工程都是其下面的模块

Dubbo架构图如下：

                                        

2.1接下来我们将表现层和服务层分开。

2.1.1首先将e3-manager-web从项目引用中删除

2.1.2在e3-manager的pom文件中将e3-manager-web模块的引用删除

<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>
  <parent>
    <groupId>cn.e3mall</groupId>
    <artifactId>e3-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <groupId>cn.e3mall</groupId>
  <artifactId>e3-manager</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  
  	<dependencies>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-common</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
	</dependencies>
	
	<build>
		<plugins>
			<!-- 配置Tomcat插件 -->
			<plugin>
				<groupId>org.apache.tomcat.maven</groupId>
				<artifactId>tomcat7-maven-plugin</artifactId>
				<configuration>
					<path>/</path>
					<port>8080</port>
				</configuration>
			</plugin>
		</plugins>
	</build>
	<modules>
		<module>e3-manager-pojo</module>
		<module>e3-manager-dao</module>
		<module>e3-manager-interface</module>
		<module>e3-manager-service</module>
	</modules>
</project>

2.1.3在工作区找到e3-manager-web，将其复制到和e3-manager同级目录 

 2.2修改e3-manager-service pom文件，修改打包方式为war，并且添加dubbo依赖

<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>
  <parent>
    <groupId>cn.e3mall</groupId>
    <artifactId>e3-manager</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <packaging>war</packaging>
  <artifactId>e3-manager-service</artifactId>
  <dependencies>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-manager-dao</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-manager-interface</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
		<!-- Spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jms</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
		</dependency>
		<!-- dubbo相关 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>dubbo</artifactId>
			<exclusions>
				<exclusion>
					<groupId>org.springframework</groupId>
					<artifactId>spring</artifactId>
				</exclusion>
				<exclusion>
					<groupId>org.jboss.netty</groupId>
					<artifactId>netty</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.apache.zookeeper</groupId>
			<artifactId>zookeeper</artifactId>
		</dependency>
		<dependency>
			<groupId>com.github.sgroschupf</groupId>
			<artifactId>zkclient</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.activemq</groupId>
			<artifactId>activemq-all</artifactId>
		</dependency>

	</dependencies>
</project>

2.3修改e3-manager-service pom文件，修改e3-manager-service依赖改为e3-manager-interface，添加Dubbo依赖，配置tomcat插件

<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>
  <parent>
    <groupId>cn.e3mall</groupId>
    <artifactId>e3-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>e3-manager-web</artifactId>
  <packaging>war</packaging>
  <dependencies>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-manager-interface</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
		<!-- <dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-content-interface</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-search-interface</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency> -->
		<!-- JSP相关 -->
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jsp-api</artifactId>
			<scope>provided</scope>
		</dependency>
		<!-- Spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jms</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
		</dependency>
		<!-- dubbo相关 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>dubbo</artifactId>
			<exclusions>
				<exclusion>
					<groupId>org.springframework</groupId>
					<artifactId>spring</artifactId>
				</exclusion>
				<exclusion>
					<groupId>org.jboss.netty</groupId>
					<artifactId>netty</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.apache.zookeeper</groupId>
			<artifactId>zookeeper</artifactId>
		</dependency>
		<dependency>
			<groupId>com.github.sgroschupf</groupId>
			<artifactId>zkclient</artifactId>
		</dependency>
		<!-- 文件上传组件 -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
		</dependency>

	</dependencies>

	<build>
		<plugins>
			<!-- 配置Tomcat插件 -->
			<plugin>
				<groupId>org.apache.tomcat.maven</groupId>
				<artifactId>tomcat7-maven-plugin</artifactId>
				<configuration>
					<path>/</path>
					<port>8081</port>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

2.4相关的配置文件修改

e3-manager-service添加web文件

<?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_2_5.xsd" version="2.5">
  <display-name>e3-manager</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>
  <!-- 加载spring容器 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring/applicationContext-*.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
</web-app>

e3-manager-web修改web文件

<?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_2_5.xsd" version="2.5">
  <display-name>e3-manager-web</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>
  
  <!-- 解决post乱码 -->
	<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>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>


	<!-- springmvc的前端控制器 -->
	<servlet>
		<servlet-name>e3-manager</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- contextConfigLocation不是必须的， 如果不配置contextConfigLocation， springmvc的配置文件默认在：WEB-INF/servlet的name+"-servlet.xml" -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring/springmvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>e3-manager</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
</web-app>

将e3-manager-web的配置文件复制到e3-manager-service（保留springmvc.xml）

服务层暴露服务applicationContext-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
	http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">

	<!-- 配置包扫描器 -->
	<context:component-scan base-package="lx.test.service"/>
	
	<!-- 使用dubbo发布服务 -->
	<!-- 提供方应用信息，用于计算依赖关系 -->
	<dubbo:application name="e3-manager" />
	<dubbo:registry protocol="zookeeper"
		address="192.168.25.200:2181" />
	<!-- 用dubbo协议在20880端口暴露服务 -->
	<dubbo:protocol name="dubbo" port="20880" />
	<!-- 声明需要暴露的服务接口 -->
	<dubbo:service interface="lx.test.service.ItemService" ref="itemServiceImpl" timeout="600000"/>
	<!-- <dubbo:service interface="lx.test.service.ItemCatService" ref="itemCatServiceImpl" timeout="600000"/> -->
</beans>

 表现层引用服务springmvc.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:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
        http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">

	<!-- 加载配置文件 -->
	<!-- <context:property-placeholder location="classpath:conf/resource.properties" /> -->
	<context:component-scan base-package="lx.test.controller" />
	<mvc:annotation-driven />
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>
	<!-- 配置资源映射 -->
	<mvc:resources location="/css/" mapping="/css/**"></mvc:resources>
	<mvc:resources location="/js/" mapping="/js/**"></mvc:resources>

	<!-- 定义文件上传解析器 -->
	<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<!-- 设定默认编码 -->
		<property name="defaultEncoding" value="UTF-8"></property>
		<!-- 设定文件上传的最大值5MB，5*1024*1024 -->
		<property name="maxUploadSize" value="5242880"></property>
	</bean>


	<!-- 引用dubbo服务 -->
	<dubbo:application name="e3-manager-web" />
	<dubbo:registry protocol="zookeeper" address="192.168.25.200:2181" />
	<dubbo:reference interface="lx.test.service.ItemService"
		id="itemService" />
	<!-- <dubbo:reference interface="lx.test.service.ItemCatService"
		id="itemCatService" />
	<dubbo:reference interface="lx.test.content.service.ContentCategoryService"
		id="contentCategoryService" />
	<dubbo:reference interface="lx.test.content.service.ContentService"
		id="contentService" />
	<dubbo:reference interface="lx.test.search.service.SearchItemService"
		id="searchItemService" />		 -->
</beans>

改造完毕

三：测试改造结果

先启动e3-manager在启动e3-manager-web