所谓聚合项目，实际上就是对项目分模块，互联网项目一般来说按照业务分（订单模块、VIP模块、支付模块、CMS模块…），传统的软件项目，大多采用分层的方式(Dao、Serivce、Controller)：

一、多模块结构

bobo-parent       pom  管理 |-- bobo-manager   pom 管理|-- bobo-manager-dao     jar|-- bobo-manager-service jar|-- bobo-manager-model   jar|-- bobo-manager-commons jar|-- bobo-manager-controller war

二、创建项目

1.创建bobo-parent

pom文件不需要写代码，只是起管理作用

2.创建bobo-manager项目

指定bobo-parent为其父项目

3.分别创建四个jar项目

项目类型为 maven model

相同的步骤创建其他3个jar项目

4.创建bobo-manager-controller项目

<dependencies> <!-- 因为是web项目所以需要servlet --> <!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api --><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version><scope>provided</scope></dependency></dependencies><build><plugins> <!-- tomcat插件 --><plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.2</version><configuration> <!-- 端口号 --><port>8082</port> <!-- /表示访问路径 省略项目名 --><path>/</path> <!-- 设置编码方式 --><uriEncoding>utf-8</uriEncoding></configuration></plugin></plugins></build>

三、设置相互依赖

1.依赖关系介绍

完整依赖关系

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依赖

依赖

依赖

依赖

controller

service

dao

model

commons

控制层的依赖关系

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依赖

依赖

依赖

依赖

controller

service

dao

model

commons

service层的依赖关系

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依赖

依赖

依赖

service

dao

model

commons

dao层的依赖关系

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依赖

依赖

dao

model

commons

2.实现依赖关系

2.1项目打包

1.先对bobo-parent项目打包

本地仓库就会生成打包的内容

2.再对bobo-manager项目打包

成功后本地仓库

2.2添加依赖关系

1.controller依赖service

<!-- 配置依赖的service坐标 -->
<dependency><groupId>com.dpb</groupId><artifactId>bobo-manager-service</artifactId><version>0.0.1-SNAPSHOT</version>
</dependency>

2.service依赖dao

<!-- 配置依赖的Dao坐标 -->
<dependency><groupId>com.dpb</groupId><artifactId>bobo-manager-dao</artifactId><version>0.0.1-SNAPSHOT</version>
</dependency>

同时controller也会依赖dao，间接依赖

3.dao依赖model和Commons

 <dependencies><!-- 配置依赖的model和Commons的坐标 --><dependency><groupId>com.dpb</groupId><artifactId>bobo-manager-model</artifactId><version>0.0.1-SNAPSHOT</version></dependency><dependency><groupId>com.dpb</groupId><artifactId>bobo-manager-commons</artifactId><version>0.0.1-SNAPSHOT</version></dependency></dependencies>

3.Spring和SpringMVC整合

3.1在dao中引入spring

<properties><spirng.version>4.3.3.RELEASE</spirng.version></properties><dependencies><!-- 配置依赖的model和Commons的坐标 --><dependency><groupId>com.dpb</groupId><artifactId>bobo-manager-model</artifactId><version>0.0.1-SNAPSHOT</version></dependency><dependency><groupId>com.dpb</groupId><artifactId>bobo-manager-commons</artifactId><version>0.0.1-SNAPSHOT</version></dependency><!-- 1.spring相关的jar包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spirng.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spirng.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spirng.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${spirng.version}</version></dependency><!-- https://mvnrepository.com/artifact/log4j/log4j --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency><!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core --><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-core</artifactId><version>2.6.2</version></dependency><!-- 数据库驱动包 这个是从私服上关联的--><dependency><groupId>com.dpb.oracle</groupId><artifactId>ojdbc6-dpb</artifactId><version>1.0.0</version></dependency></dependencies>

3.2在controller中引入springmvc

在controller中添加的是其他项目不需要用的jar包，比如servlet。

 <properties><spirng.version>4.3.3.RELEASE</spirng.version></properties><dependencies><!-- 因为是web项目所以需要servlet --><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version><scope>provided</scope></dependency><!-- 配置依赖的service坐标 --><dependency><groupId>com.dpb</groupId><artifactId>bobo-manager-service</artifactId><version>0.0.1-SNAPSHOT</version></dependency><!-- 2.和springMvc相关的jar包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spirng.version}</version></dependency><!-- https://mvnrepository.com/artifact/jstl/jstl --><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency></dependencies>

spring配置文件

<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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"><!-- 开启扫描 --><context:component-scan base-package="com.dpb.service.impl,com.dpb.dao.impl"><!-- 扫描的时候显示的排除controller注解 --><context:exclude-filter type="annotation"expression="org.springframework.stereotype.Controller" /></context:component-scan><bean class="org.springframework.jdbc.datasource.DriverManagerDataSource"id="ds"><property name="url" value="jdbc:oracle:thin:@localhost:1521:orcl" /><property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" /><property name="username" value="pms" /><property name="password" value="pms" /></bean><bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate"><constructor-arg name="dataSource" ref="ds"/></bean>
</beans>

SpringMVC的配置文件

<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:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"><!-- 开启注解 --><mvc:annotation-driven ></mvc:annotation-driven><!-- 开启扫描 --><context:component-scan base-package="com.dpb.controller"><!-- 只扫描指定路径下的controller注解 --><context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/></context:component-scan>
</beans>

3.3在controller中配置web.xml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"id="WebApp_ID" version="2.5" ><!-- 这里配置Spring配置文件的位置，param-name是固定的， param-value是文件位置 这个配置可以省略，如果省略， 系统默认去/WEB-INF/目录下查找applicationContext.xml作为Spring的配置文件 --><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></context-param><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 前端控制器 --><servlet><servlet-name>spring-mvc</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring-mvc.xml</param-value></init-param></servlet><servlet-mapping><servlet-name>spring-mvc</servlet-name><url-pattern>/</url-pattern></servlet-mapping><filter><filter-name>encodingFilter</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>encodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><servlet-mapping><servlet-name>default</servlet-name><url-pattern>*.jpg</url-pattern></servlet-mapping><servlet-mapping><servlet-name>default</servlet-name><url-pattern>*.js</url-pattern></servlet-mapping><servlet-mapping><servlet-name>default</servlet-name><url-pattern>*.css</url-pattern></servlet-mapping>
</web-app>

3.4实现查询操作

1.在bobo-manager-model中创建User对象

public class User {private int id;private String uname;private String nickname;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getUname() {return uname;}public void setUname(String uname) {this.uname = uname;}public String getNickname() {return nickname;}public void setNickname(String nickname) {this.nickname = nickname;}
}

2.在bobo-manager-dao实现数据库操作

public interface IUserDao {public List<User> query();
}

@Repository
public class UserDaoImpl implements IUserDao {@ResourceJdbcTemplate jdbcTemplate;@Overridepublic List<User> query() {String sql = "select * from t_sysuser";return jdbcTemplate.query(sql, new BeanPropertyRowMapper<User>(User.class));}}

3.在bobo-manager-service中操作Dao

public interface IUserService {public List<User> query();}

@Service
public class UserServiceImpl implements IUserService {@Resourceprivate IUserDao dao;@Overridepublic List<User> query() {// TODO Auto-generated method stubreturn dao.query();}}

4.在bobo-manager-controller中处理请求响应

@Controller
public class UserController {@Resourceprivate IUserService userService;@RequestMapping("/query")public String query(Model m){m.addAttribute("list", userService.query());return "/user.jsp";}
}

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body><c:forEach items="${list }" var="u">${u.id } --${u.uname }--${u.nickname }<br></c:forEach>
</body>
</html>

5.测试

对bobo-manager打包

然后启动 bobo-manager-controller项目

成功!!!

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