Spring
Spring
标签： JAVA框架
spring
一 简介
Spring框架
作用：Spring Core (IOC功能) Spring AOP功能
管理组件对象，维护对象关系
目的：降低耦合度
Spring Web MVC功能
MVC设计，
目的：架构一个MVC结构的Web程序
Spring整合其他技术，例如JDBC,MyBatis,Hibernate,Struts等
二 搭建环境
a、搭建spring（核心）的开发环境
下载对应的包 spring对应的包 commons-logging对应的包
b、String就是一个对象容器
在应用的构建路径中建立一个applicationContext.xml的配置文件
三 spring容器中创建对象的方式
1 spring容器自动加载无参的构造方法
2 静态工厂类的方式
3 实例工厂类的方式
四、别名
五、创建对象的时间
1默认是在spring容器加载的过程中加载
2懒加载 在Context.getBean的时候加载 lazy-init
六、多实例和单实例
通过scope属性设置
默认是单实例 singleton
可以设置为prototype 加载一次bean加载一次构造方法
七 init-method 和 destroy-method
init-method 可以给该bean类配置初始化时执行的方法
destroy-method spring容器关闭的时候 执行的方法
举例
<beans xmlns="http://www.springframework.org/schema/beans"
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-2.5.xsd">
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass">
<value>com.mysql.jdbc.Drivervalue>
property>
<property name="jdbcUrl">
<value>jdbc:mysql://localhost:3306/eportal?useUnicode=
true&characterEncoding=gbkvalue>
property>
<property name="user">
<value>rootvalue>
property>
<property name="password">
<value>rootvalue>
property>
<property name="maxPoolSize">
<value>20value>
property>
<property name="minPoolSize">
<value>2value>
property>
<property name="initialPoolSize">
<value>2value>
property>
<property name="maxIdleTime">
<value>20value>
property>
bean>
<bean id="sessionFactory"
class="org.springframework.orm.
hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mappingResources">
<list>
<value>com/eportal/ORM/News.hbm.xmlvalue>
<value>com/eportal/ORM/Category.hbm.xmlvalue>
<value>com/eportal/ORM/Memberlevel.hbm.xmlvalue>
<value>com/eportal/ORM/Cart.hbm.xmlvalue>
<value>com/eportal/ORM/Traffic.hbm.xmlvalue>
<value>com/eportal/ORM/Newsrule.hbm.xmlvalue>
<value>com/eportal/ORM/Merchandise.hbm.xmlvalue>
<value>com/eportal/ORM/Admin.hbm.xmlvalue>
<value>com/eportal/ORM/Orders.hbm.xmlvalue>
<value>com/eportal/ORM/Cartselectedmer.hbm.xmlvalue>
<value>com/eportal/ORM/Newscolumns.hbm.xmlvalue>
<value>com/eportal/ORM/Member.hbm.xmlvalue>
list>
property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialectprop>
<prop key="show_sql">trueprop>
<prop key="hibernate.jdbc.batch_size">50prop>
<prop key="show_sql">50prop>
props>
property>
bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
bean>
<bean id="transactionInterceptor"
class="org.springframework.transaction.interceptor.TransactionInterceptor">
<property name="transactionManager" ref="transactionManager" />
<property name="transactionAttributes">
<props>
<prop key="browse*">PROPAGATION_REQUIRED,readOnlyprop>
<prop key="list*">PROPAGATION_REQUIRED,readOnlyprop>
<prop key="load*">PROPAGATION_REQUIRED,readOnlyprop>
<prop key="get*">PROPAGATION_REQUIRED,readOnlyprop>
<prop key="is*">PROPAGATION_REQUIRED,readOnlyprop>
<prop key="*">PROPAGATION_REQUIREDprop>
props>
property>
bean>
<bean
class="org.springframework.aop.framework.autoproxy.
BeanNameAutoProxyCreator">
<property name="beanNames">
<list>
<value>adminServicevalue>
<value>columnsServicevalue>
<value>newsServicevalue>
<value>crawlServicevalue>
<value>memberLevelServicevalue>
<value>memberServicevalue>
<value>categoryServicevalue>
<value>merServicevalue>
<value>cartServicevalue>
<value>ordersServicevalue>
<value>trafficServicevalue>
list>
property>
<property name="proxyTargetClass">
<value>truevalue>
property>
<property name="interceptorNames">
<list>
<value>transactionInterceptorvalue>
list>
property>
bean>
<bean id="dao" class="com.eportal.DAO.BaseDAOImpl">
<property name="sessionFactory" ref="sessionFactory" />
bean>
<bean id="adminService" class="com.eportal.service.AdminServiceImpl">
<property name="dao" ref="dao" />
bean>
<bean id="columnsService" class="com.eportal.service.ColumnsServiceImpl">
<property name="dao" ref="dao" />
bean>
<bean id="ordersService" class="com.eportal.service.OrderServiceImpl">
<property name="dao" ref="dao" />
bean>
<bean id="trafficService" class="com.eportal.service.TrafficServiceImpl">
<property name="dao" ref="dao" />
bean>
<bean id="adminAction" class="com.eportal.struts.action.
AdminAction"
scope="prototype">
<property name="service" ref="adminService" />
bean>
<bean id="columnsAction" class="com.eportal.struts.action.
ColumnsAction"
scope="prototype">
<property name="service" ref="columnsService" />
bean>
<bean id="newsAction" class="com.eportal.struts.action.
NewsAction"
scope="prototype">
<property name="service" ref="newsService" />
<property name="columnsService" ref="columnsService" />
bean>
<bean id="crawlAction" class="com.eportal.struts.action.
CrawlAction"
scope="prototype">
<property name="service" ref="crawlService" />
<property name="columnsService" ref="columnsService" />
bean>
beans>