通过maven对项目进行拆分、聚合

思路:对现在已有maven ssh项目进行拆分,拆分思路:将dao层的代码已经配置文件全体提取出来到一个表现上独立的工程中同样service,action拆分

ssh-parent:父工程
ssh-dao(子模块)
ssh-service	
ssh-web

拆分完成对拆分后的项目进行聚合,提出概念父工程

一.创建父工程

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创建好父工程目录结构:只有pom.xml 可以推断父工程不进行编码
项目需要的依赖信息,在父工程中定义,子模块继承过程

  <properties>
        <!-- 统一源码的编码方式 -->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <!-- 统一各个框架版本 -->
        <struts.version>2.5.10</struts.version>
        <spring.version>4.3.8.RELEASE</spring.version>
        <hibernate.version>5.1.7.Final</hibernate.version>
    	</properties>
   <dependencies>
        <!-- Junit依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.9</version>
            <scope>test</scope>
        </dependency>
        <!-- Spring 核心依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- Spring web依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- Spring整合ORM框架依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- Struts2 核心依赖 -->
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-core</artifactId>
            <version>${struts.version}</version>
        </dependency>
        <!-- Struts2和Spring整合依赖 -->
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-spring-plugin</artifactId>
            <version>${struts.version}</version>
        </dependency>
        <!-- Hibernate 核心依赖 -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <!-- MySQL 依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.42</version>
        </dependency>
        <!-- C3P0 依赖 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5</version>
        </dependency>
        <!-- AspectJ依赖 -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.10</version>
        </dependency>
        <!-- SLF4J依赖 -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.25</version>
        </dependency>
         <!-- 导入java ee jar 包 -->  
        <dependency>  
            <groupId>javax</groupId>  
            <artifactId>javaee-api</artifactId>  
            <version>7.0</version>  
        </dependency>  
        <dependency> 
            <groupId>org.springframework</groupId>  
            <artifactId>spring-test</artifactId>  
            <version>4.2.4.RELEASE</version>  
       </dependency>
    </dependencies>

将各个子模块聚合到一起
将创建父工程发布到本地仓库
将来service,dao工程发布到本地仓库发布的service工程会报错
如果忘记此步骤将父工程发布到本地仓库

二.创建子模块ssh-dao

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applicationContext-basic:项目基础信息
applicationContext-dao:dao层bean信息

实体类Customer

public class Customer {
         private String custId;
         private String custName;
         private String address;
		
		public String getCustId() {
			return custId;
		}
		public void setCustId(String custId) {
			this.custId = custId;
		}
		public String getCustName() {
			return custName;
		}
		public void setCustName(String custName) {
			this.custName = custName;
		}
		public String getAddress() {
			return address;
		}
		public void setAddress(String address) {
			this.address = address;
		}
         
}

CustomerDaoImpl.java

public class CustomerDaoImpl extends HibernateDaoSupport implements CustomerDao {

	public Customer findOne(String custId) {
		
		return this.getHibernateTemplate().get(Customer.class,custId);
	}

}

接口CustomerDao

public interface CustomerDao {

	Customer findOne(String custId);





}

Customer.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- 引入Hibernate映射文件约束 -->
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

    <!-- class指定POJO类和数据库表之间的对应 -->
    <class name="cn.playmaker.domain.Customer" table="t_customer" >

       <!-- id指定数据库中表的主键,以及主键生成策略 -->
       <id name="custId" type="java.lang.String" >
       <column name="id" length="32"></column>
           <generator class="uuid" />
       </id>

       <!-- property指定表字段和POJO中的属性的对应 -->
       <property name="custName" column="custName" type="java.lang.String">
       </property>

       <property name="address" column="address" type="java.lang.String">
       </property>

    </class>

</hibernate-mapping>

applicationContext-basic

<?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: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.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">
    
    <!-- 加载属性文件 -->
    <context:property-placeholder location="classpath:db.properties"/>
    
   <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
                 <!-- 注入属性值 -->
                   <property name="driverClass" value="${jdbc.driverClass}"></property>
                    <property name="jdbcUrl" value="${jdbc.url}"></property>
                     <property name="user" value="${jdbc.username}"></property>
                      <property name="password" value="${jdbc.password}"></property>
         </bean>

      <!-- 配置Hibernate的SessionFactory -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <!-- 注入连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 配置Hibernate属性 -->
          <property name="configLocations" value="classpath:hibernate.cfg.xml"></property>
    </bean>

     
     <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
	    <property name="sessionFactory" ref="sessionFactory"></property>
	</bean>
	
	<!-- xml管理事务 -->
     <tx:advice id="txAdvice">
            <tx:attributes>
                <!-- 匹配业务类中方法名 -->
                 <tx:method name="save*"/>
                  <tx:method name="update*"/>
                   <tx:method name="delete*"/>
                    <tx:method name="find*" read-only="true"/>
                    <tx:method name="*"/>
            </tx:attributes>     
     </tx:advice>
     
     <!-- 配置aop -->
     <aop:config>
        <!-- 配置切点:具体哪些方法要增强(真正被增强的方法) -->
        <aop:pointcut expression="execution(* cn.playmaker.service.*.*(..))" id="cut"/>
         <!-- 配置切面:将增强逻辑作用到切点(通知+切入点)-->
         <aop:advisor advice-ref="txAdvice" pointcut-ref="cut"/>
     </aop:config>
     
     <!-- 1.开启注解驱动 2.在service类或者方法上使用注解@Transactional-->
     <tx:annotation-driven transaction-manager="transactionManager" />
    
</beans>

applicationContext-dao

<?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: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.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">
   
     
     <!-- 先注入dao -->
     <bean id="customerDao" class="cn.playmaker.dao.impl.CustomerDaoImpl">
              <property name="sessionFactory" ref="sessionFactory"></property>
     </bean>
</beans>

hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- DTD是约束,可以在核心包里面找 -->
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
   <session-factory>

			<!-- 输出底层sql语句 -->
			<property name="hibernate.show_sql">true</property>
			<!-- 输出底层格式化语句 -->
			<property name="hibernate.format_sql">true</property>
		       <!-- hibernate帮创建表 需要配置之后
		       update:如果已经有表 更新 如果没有 创建 -->
		        <property name="hibernate.hbm2ddl.auto">update</property>
			
			<!-- 配置数据库方言 
			     在mysql里面实现分页 关键字 limit,只能使用mysql
			   在oracle数据库 实现分页 rownum
			   让hibernate框架识别不同数据库的自己特有的语句 -->
			<property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
			
			<!-- 第三部分:把映射文件放到核心配置文件中 必须的 -->
            <mapping resource="cn/playmaker/domain/Customer.hbm.xml"/>
          </session-factory>
</hibernate-configuration>

三.创建子模块ssh-service

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接口CustomerService

public interface CustomerService {

	Customer findOne(String custId);


}

CustomerServiceImpl

public class CustomerServiceImpl implements CustomerService {
           private CustomerDao customerDao;

		public void setCustomerDao(CustomerDao customerDao) {
			this.customerDao = customerDao;
		}

		@Override
		public Customer findOne(String custId) {
			
			return customerDao.findOne(custId);
		}
         
}

<?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: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.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">
   
     
     <!-- 再注入service -->
     <bean id="customerService" class="cn.playmaker.service.impl.CustomerServiceImpl">
             <property name="customerDao" ref="customerDao"></property>
     </bean>
</beans>

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此时项目是报错的,因为找不到CustomerDao之类的对象

在service工程pow.xml添加dao依赖

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依赖引用的是一个项目
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因为我们之前已经将ssh-dao发布到本地仓库,所以当我们关闭ssh-dao这个项目,它就会去本地仓库去找对应的jar包

四.创建子模块 ssh-web

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同样也要在ssh-web pom.xml加入service的依赖

CustomerAction

public class CustomerAction extends ActionSupport {

	private CustomerService customerService;

	private String custId;
	
	public void setCustomerService(CustomerService customerService) {
		this.customerService = customerService;
	}
	
   public void setCustId(String custId) {
		this.custId = custId;
	}
  

public String findOne() throws Exception{
	   Customer customer =customerService.findOne(custId);
	   ActionContext.getContext().getValueStack().push(customer);
	   
	   return SUCCESS;
   }
}

applicationContext-action.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: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.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">
    
    <!-- 配置action对象 -->
	<bean id="customerAction" class="cn.playmaker.action.CustomerAction" scope="prototype">
	          <property name="customerService" ref="customerService"></property>
	</bean>
</beans>

struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
    "http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>

    <!-- 默认访问页面 -->
    <package name="default" extends="struts-default" namespace="/">
        <action name="customerAction_*" class="customerAction" method="{1}">
            <result name="success">/index.jsp</result>
            <allowed-methods>findOne</allowed-methods>
        </action>
    </package>

    <!-- 引入资源文件 -->
    <constant name="struts.custom.i18n.resources" value="messageResource"></constant>

</struts>

web.xml

<?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>maven_ssh</display-name>
  
     <context-param>
    <param-name>contextConfigLocation</param-name>
    <!-- 这里如果bean.xml在包cn.ssh下，那么就应该写为：cn/ssh/bean.xml -->
    <param-value>classpath*:spring/applicationContext-*.xml</param-value>
	</context-param>
  
   <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
  
  
  <!-- 配置Spring的监听器 默认加载WEB-INF/applicationContext.xml-->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
  
  
  
  
  <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>
</web-app>

五.单元测试

批量加载spring配置文件

classpath:spring/applicationContext-*.xml
classpath*:spring/applicationContext-*.xml 既要加载本项目中配置文件,还要加载jar包的配置文件

对ssh-dao进行测试(创建CustomerDao的测试类)

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:spring/applicationContext-*.xml")
public class CustomerDaoTest {

	@Autowired
	private CustomerDao dao;
	@Test
	public void testFindOne() {
		Customer customer = dao.findOne("1");
		System.out.println(customer.getCustName());
	}

}

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对ssh-service进行测试(创建CustomerService的测视类)

public class CustomerServiceTest {

	@Test
	public void testFindOne() {
		ClassPathXmlApplicationContext path = 
				new ClassPathXmlApplicationContext("classpath*:spring/applicationContext-*.xml");
		CustomerService service = (CustomerService) path.getBean("customerService");
		service.findOne("1");
	}

}

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六.传递依赖范围

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    A:ssh-service 工程
    B:ssh-dao 工程
    C:junit单元测试

总结:当项目需要的某一个jar包依赖没有传递过来。在自己工程中添加对于依赖就可以了

七.运行方式

运行父工程。父工程将各个子模块聚合到一起。将ssh-web打成war包发布到tomcat
直接运行web工程
注意:这里最好tomcat和jdk版本一致,不然会出现报错的可能
其他方式:部署tomcat上运行

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通过maven对项目进行拆分、聚合

一.创建父工程

二.创建子模块ssh-dao

三.创建子模块ssh-service

四.创建子模块 ssh-web

五.单元测试

六.传递依赖范围

七.运行方式

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