Java Web开发中Sping的总结整合dao.xml,service.xml,action.xml

1、 Spring的诞生

为了解决大型企业级应用的结构复杂，涉及外部资源众多，事务密集、数据规模庞大，用户数量多，又较强的安全性考虑和较高的性能要求。------Rod Jonson (Spring的作者)

2、Spring的优化

Spring属于集成框架，其核心基于控制反转（Inverse of Control 即IOC），Spring是一个全面的解决方案:提倡不重新造轮子。

3、 Spring包含的模块

Core 、AOP、DAO、ORM、JEE、WEB。

4、 Spring的核心机制----依赖注入

所谓的依赖注入就是当某个角色需要另一个角色的协助时，通常由调用者来创建被调用者的实例。在Spring中，创建者调用实例的工作常由Spring容器来完成，然后注入调用者。

例如：在Action中需要使用Service的对象，我们可以通过注入来实现对象的引用。

private UserService userService;

public void setUserService(UserService userService) {

this.userService = userService;

}

5、 log4j的日志记录-----log4j.properties

》》规范：

#ootLogger是所有日志的根志，修改该日志属性将对所有日志起作用

#有日志的输出级别info,输出源console

#log4j.rootLogger=info,console

#定义输出位置是控制台

log4j.appender.console=org.apache.log4j.ConsoleAppender

#日志布局采用的类

log4j.appender.console.layout=org.apache.log4j.PatternLayout

#日志输出布局

log4j.appender.console.ConversionPattern= [%p] %d{yyyy-MM-dd

HH:mm:ss} %m %l

》》实用：

log4j.rootLogger=DEBUG,console,file

log4j.appender.console=org.apache.log4j.ConsoleAppender

log4j.appender.console.layout=org.apache.log4j.PatternLayout

log4j.appender.console.ConversionPattern= [%p] %d{yyyy-MM-dd HH:mm:ss} %m %l

log4j.appender.file=org.apache.log4j.FileAppender

log4j.appender.file.file=${log4j_root}/logs.file

log4j.appender.file.layout=org.apache.log4j.PatternLayout

log4j.appender.file.layout.ConversionPattern=[%p] %d{yyyy-MM-dd HH:mm:ss} %m %r%n

6、 SSH整合

（1）SSH框架的搭建

步骤：

1、添加集成好的所有Jar包。

2、添加顺序Struts2，Hibernate3，Spring2.5或Spring3.0。

3、分别编写配置web.xml、Hibernate、dao.xml、srvice.xml、action.xml和ApplicationContent.xml

Web.xml文件下的主要配置：

<!-- 配置spring -->

<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>

<listener>

<listener-class>com.boonya.jboa.utils.Log4jListener</listener-class>

</listener>

<!-- 配置字符过滤器 -->

<filter>

<filter-name>characterFilter</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>

<!-- 配置OSIV过滤器 -->

<filter>

<filter-name>OSIVFilter</filter-name>

<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>

</filter>

<!-- 配置Struts2 -->

<filter>

<filter-name>struts2</filter-name>

<filter-class>

org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>

</filter>

Hibernate.cfg.xml的配置：

<session-factory>

<property name="myeclipse.connection.profile">JBOA</property>

<property name="dialect">

org.hibernate.dialect.Oracle9Dialect

</property>

<property name="show_sql">true</property>

<mapping resource="com/boonya/jboa/entity/ClaimVoucher.hbm.xml" />

<mapping resource="com/boonya/jboa/entity/CheckResult.hbm.xml" />

<mapping resource="com/boonya/jboa/entity/Position.hbm.xml" />

<mapping resource="com/boonya/jboa/entity/Department.hbm.xml" />

<mapping resource="com/boonya/jboa/entity/ClaimVoucherDetail.hbm.xml" />

<mapping resource="com/boonya/jboa/entity/Employee.hbm.xml" />

</session-factory>

数据库访问属性文件：db.properties

driver=oracle.jdbc.driver.OracleDriver

url=jdbc:oracle:thin:@localhost:1521:orcl

user=jboa

password=jboa

Config文件夹下的dao.xml配置：

<!-- 配置数据源 -->

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">

<property name="driverClassName" value="${driver}"></property>

<property name="url" value="${url}"></property>

<property name="username" value="${user}"></property>

<property name="password" value="${password}"></property>

</bean>

<!-- 配置session工厂 -->

<bean id="sessionFactory"

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<property name="dataSource" ref="dataSource"></property>

<property name="configLocation" value="classpath:hibernate.cfg.xml">

</property>

</bean>

<!-- 配置dao基类 -->

<bean id="baseDao" abstract="true" class="com.boonya.jboa.dao.BaseDao">

<property name="sessionFactory" ref="sessionFactory"></property>

</bean>

<!--********************以下为具体的****************** -->

<bean id="claimVoucherDao" class="com.boonya.jboa.dao.ClaimVoucherDao" parent="baseDao"></bean>

<bean id="userDao" class="com.boonya.jboa.dao.UserDao" parent="baseDao"></bean>

Config文件夹下的Service.xml配置：

xmlns:p="http://www.springframework.org/schema/p"

xmlns:tx="http://www.springframework.org/schema/tx"

xmlns:aop="http://www.springframework.org/schema/aop"

xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
">

<!-- 事务配置 -->

<bean id="txManager"

class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory"></property>

</bean>

<!-- Advice -->

<tx:advice transaction-manager="txManager" id="serviceAdvice">

<tx:attributes>

<tx:method name="*" propagation="REQUIRED" />

<tx:method name="get*" read-only="true" />

<tx:method name="find*" read-only="true" />

</tx:attributes>

</tx:advice>

<!-- AOP -->

<aop:config>

<aop:pointcut expression="execution(* com.boonya.jboa.service..*.*(..))"

id="serviceMethod" />

<aop:advisor advice-ref="serviceAdvice" pointcut-ref="serviceMethod" />

</aop:config>

<aop:aspectj-autoproxy></aop:aspectj-autoproxy>

<bean id="baseService" class="com.boonya.jboa.service.BaseService" abstract="true"></bean>

<bean id="claimVoucherService" class="com.boonya.jboa.service.ClaimVoucherService" parent="baseService">

<property name="claimVoucherDao" ref="claimVoucherDao"></property>

</bean>

<bean id="userService" class="com.boonya.jboa.service.UserService" parent="baseService">

<property name="userDao" ref="userDao"></property>

</bean>

Config文件夹下的action.xml配置：

<!-- 分页bean -->

<bean id="pageBean" class="com.boonya.jboa.utils.PaginationSupport"

scope="prototype"></bean>

<!-- 基础action -->

<bean id="baseAction" class="com.boonya.jboa.action.BaseAction" abstract="true" scope="prototype">

<property name="pageBean" ref="pageBean"></property>

</bean>

<bean id="claimVoucherAction" class="com.boonya.jboa.action.ClaimVoucherAction" parent="baseAction"scope="prototype">

<property name="claimVoucherService" ref="claimVoucherService"></property>

</bean>

在Struts.xml下编写相应的action:

<package name="default" namespace="/" extends="struts-default">

<action name="user" class="userAction">

<result name="input">/login.jsp</result>

<result name="success">/success.jsp</result>

</action>

在applicationContext.xml配置，引入注入对象:

<!-- 配置属性文件读取 -->

<bean

class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">

<property name="locations">

<list>

<value>classpath:com/boonya/jboa/config/db-config.properties</value>

</list>

</property>

</bean>

<!-- 导入分配置文件 -->

<import resource="com/boonya/jboa/config/dao.xml"/>

<import resource="com/boonya/jboa/config/service.xml"/>

<import resource="com/boonya/jboa/config/action.xml"/>