尚好房 04_服务拆分
尚好房：服务拆分
一、业务介绍
1、项目模块划分
根据前面的介绍，目前我们的系统规划了3个dubbo服务提供者模块：权限服务、房源服务与会员服务，及2个服务消费者模块：尚好房管理平台（web-admin）与网站前端（web-front）
2、服务调用关系
3、项目拆分说明
当前我们项目为单体的SSM项目，目前开发了权限管理的用户管理与角色管理，接着要开发房源管理的数据字典、小区管理与房源管理，权限管理与房源管理属于两不同的dubbo服务，当前我们就来把单体架构拆分为dubbo通信的分布式架构，拆分步骤：
1、shf-parent模块管理dubbo相关的依赖
2、common-util模块引入依赖
3、提取api接口模块：service-api
4、分解web-admin模块：
web-admin作为服务消费者，只负责dubbo消费端
service及dao层作为服务提供者，通过dubbo发布服务
二、服务拆分
1、shf-parent模块添加dubbo依赖管理
在shf-parent模块pom.xml新增依赖(第一天搭建环境的时候已经添加，不用重复添加)
-
版本锁定
<dubbo.version>2.6.0dubbo.version> <zookeeper.version>3.4.7zookeeper.version> <junit.version>4.12junit.version> <zkclient.version>0.1zkclient.version> -
管理依赖
<dependency> <groupId>com.alibabagroupId> <artifactId>dubboartifactId> <version>${dubbo.version}version> dependency> <dependency> <groupId>org.apache.zookeepergroupId> <artifactId>zookeeperartifactId> <version>${zookeeper.version}version> dependency> <dependency> <groupId>com.github.sgroschupfgroupId> <artifactId>zkclientartifactId> <version>${zkclient.version}version> dependency> <dependency> <groupId>javassistgroupId> <artifactId>javassistartifactId> <version>3.12.1.GAversion> dependency> <dependency> <groupId>commons-codecgroupId> <artifactId>commons-codecartifactId> <version>1.10version> dependency>
2、common-util模块引入依赖
在common-util模块pom.xml引入依赖(第一天搭建环境的时候已经添加，不用重复添加)
<dependency>
<groupId>com.alibabagroupId>
<artifactId>dubboartifactId>
dependency>
<dependency>
<groupId>org.apache.zookeepergroupId>
<artifactId>zookeeperartifactId>
dependency>
<dependency>
<groupId>com.github.sgroschupfgroupId>
<artifactId>zkclientartifactId>
dependency>
<dependency>
<groupId>javassistgroupId>
<artifactId>javassistartifactId>
dependency>
<dependency>
<groupId>commons-codecgroupId>
<artifactId>commons-codecartifactId>
dependency>
3、搭建service-api模块
用于存放所有业务层接口
3.1 创建工程
在shf-parent工程中创建子工程service-api
3.2 引入依赖
<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">
<parent>
<artifactId>shf-parentartifactId>
<groupId>com.atguigugroupId>
<version>1.0version>
parent>
<modelVersion>4.0.0modelVersion>
<artifactId>service-apiartifactId>
<packaging>jarpackaging>
<dependencies>
<dependency>
<groupId>com.atguigugroupId>
<artifactId>common-utilartifactId>
<version>1.0version>
dependency>
<dependency>
<groupId>com.atguigugroupId>
<artifactId>modelartifactId>
<version>1.0version>
dependency>
dependencies>
project>
3.3 复制service接口
复制AdminService与RoleService到service-api模块的com.atguigu.service包中
4、搭建服务提供者模块
4.1 搭建service父工程
-
在
shf-parent工程中搭建子工程命名为service，这个工程作为所有服务提供者的父工程 -
删除
service工程的src目录 -
修改
service工程的pom.xml文件<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"> <parent> <artifactId>shf-parentartifactId> <groupId>com.atguigugroupId> <version>1.0version> parent> <modelVersion>4.0.0modelVersion> <artifactId>serviceartifactId> <packaging>pompackaging> <dependencies> <dependency> <groupId>com.atguigugroupId> <artifactId>service-apiartifactId> <version>1.0version> dependency> dependencies> project>
4.2 搭建service-acl工程
4.2.1 创建工程
在service工程中创建子工程service-acl子工程，并且使用插件将其转成javaweb项目
4.2.2 修改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/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>serviceartifactId>
<groupId>com.atguigugroupId>
<version>1.0version>
parent>
<modelVersion>4.0.0modelVersion>
<artifactId>service-aclartifactId>
<packaging>warpackaging>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.jettygroupId>
<artifactId>jetty-maven-pluginartifactId>
<version>9.4.15.v20190215version>
<configuration>
<scanIntervalSeconds>2scanIntervalSeconds>
<webAppConfig>
<contextPath>/contextPath>
webAppConfig>
<httpConnector>
<port>7001port>
httpConnector>
configuration>
plugin>
plugins>
build>
project>
4.2.3 拷贝代码
拷贝web-admin工程中的业务层和持久层内容
-
创建相同的业务层和持久层包结构
-
拷贝
AdminServiceImpl和RoleServiceImpl实现类到com.atguigu.service.impl包 -
替换业务层实现类上的
@Service注解为Dubbo的Service注解@Service(interfaceClass = AdminService.class) @Transactional(propagation = Propagation.REQUIRED) public class AdminServiceImpl extends BaseServiceImpl<Admin> implements AdminService {@Service(interfaceClass = RoleService.class) @Transactional(propagation = Propagation.REQUIRED) public class RoleServiceImpl extends BaseServiceImpl<Role> implements RoleService{ -
拷贝持久层接口
AdminMapper和RoleMapper到com.atguigu.mapper包中 -
拷贝
mappers目录到resources目录中 -
拷贝日志配置文件和
jdbc.properties文件到resources目录中 -
拷贝
spring-persist.xml和spring-service.xml到resources/spring目录中 -
修改
spring-service.xml配置文件① 删除包扫描配置，因为包扫描应该有dubbo完成，进行服务发布
② 修改事务注解驱动配置
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/> -
添加发布dubbo服务的配置文件:
spring/spring-registry.xml<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"> <dubbo:application name="service-acl"/> <dubbo:protocol name="dubbo" port="20881"/> <dubbo:registry address="zookeeper://localhost:2181" /> <dubbo:annotation package="com.atguigu"/> beans> -
修改
web.xml文件<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"> <context-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:spring/spring-*.xmlparam-value> context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class> listener> web-app>注意:
spring-service.xml文件中可以不使用import标签导入spring-persist.xml了
5、搭建服务消费者模块
5.1 搭建web父工程
-
在
shf-parent工程中搭建子工程命名为web，这个工程作为所有服务消费者的父工程 -
删除
web工程的src目录 -
修改
web工程的pom.xml文件<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"> <parent> <artifactId>shf-parentartifactId> <groupId>com.atguigugroupId> <version>1.0version> parent> <modelVersion>4.0.0modelVersion> <artifactId>webartifactId> <packaging>pompackaging> <dependencies> <dependency> <groupId>com.atguigugroupId> <artifactId>service-apiartifactId> <version>1.0version> dependency> dependencies> project>
5.2 搭建web-admin工程
5.2.1 移动模块
① 将web-admin移动到web模块中
② 删除shf-parent模块pom.xml文件的
③ 在web模块的pom.xml中新增
<modules>
<module>web-adminmodule>
modules>
5.2.2 修改web-admin工程的pom.xml
修改了父模块为web，删除了依赖（父模块已引入依赖）
<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">
<parent>
<artifactId>webartifactId>
<groupId>com.atguigugroupId>
<version>1.0version>
parent>
<modelVersion>4.0.0modelVersion>
<artifactId>web-adminartifactId>
<packaging>warpackaging>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.jettygroupId>
<artifactId>jetty-maven-pluginartifactId>
<version>9.4.15.v20190215version>
<configuration>
<scanIntervalSeconds>2scanIntervalSeconds>
<webAppConfig>
<contextPath>/contextPath>
webAppConfig>
<httpConnector>
<port>8000port>
httpConnector>
configuration>
plugin>
plugins>
build>
project>
5.2.3 删除service与dao层
① 删除com.atguigu.service包和com.atguigu.mapper包
② 删除resources/mappers目录
③ 删除resources/spring/spring-service.xml和resources/spring/spring-persist.xml文件
5.2.4 新增dubbo配置文件
创建resources/spring/spring-registry.xml
<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">
<dubbo:application name="web-admin"/>
<dubbo:registry address="zookeeper://localhost:2181"/>
<dubbo:annotation package="com.atguigu"/>
<dubbo:consumer check="false" timeout="600000">dubbo:consumer>
beans>
5.2.5 修改web.xml
删除ContextLoadListener和comtext-param配置，并且将加载的配置文件路径改成classpath:spring/spring-*.xml
<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">
<servlet>
<servlet-name>dispatcherServletservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:spring/spring-*.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>dispatcherServletservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
<filter>
<filter-name>CharacterEncodingFilterfilter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>UTF-8param-value>
init-param>
<init-param>
<param-name>forceRequestEncodingparam-name>
<param-value>trueparam-value>
init-param>
<init-param>
<param-name>forceResponseEncodingparam-name>
<param-value>trueparam-value>
init-param>
filter>
<filter-mapping>
<filter-name>CharacterEncodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
web-app>
5.2.6 改造表现层
将表现层注入服务对象的@Autowired注解改成@Reference注解
@Reference
private AdminService adminService;
@Reference
private RoleService roleService;
6、测试
① 在shf-parent项目中执行install
② 启动zookeeper
③ 使用jetty插件启动service-acl与web-admin模块
④ 访问：http://localhost:8000/