spring applicationcontext.xml配置分析

applicationContext.xml文件详解
 http://apps.hi.baidu.com/share/detail/15543517
http://smf535.blog.163.com/blog/static/1886842201141161330787/
以下是详解Spring的applicationContext.xml文件代码：
<!-- 头文件，主要注意一下编码-->
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<!-- 建立数据源-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
   <!-- 数据库驱动，我这里使用的是Mysql数据库-->
   <property name="driverClassName">
    <value>com.mysql.jdbc.Driver</value>
   </property>
   <!-- 数据库地址，这里也要注意一下编码，不然乱码可是很郁闷的哦！-->
   <property name="url">
    <value>
       jdbc:mysql://localhost:3306/tie?useUnicode=true&amp;characterEncoding=utf-8
   </value>
   </property>
   <!-- 数据库的用户名-->
   <property name="username">
    <value>root</value>
   </property>
   <!-- 数据库的密码-->
   <property name="password">
    <value>123</value>
   </property>
</bean>
<!-- 把数据源注入给Session工厂-->
<bean id="sessionFactory"
   class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
   <property name="dataSource">
    <ref bean="dataSource" />
   </property>
   <!-- 配置映射文件-->
   <property name="mappingResources">
    <list>
     <value>com/alonely/vo/User.hbm.xml</value>
    </list>
   </property>
</bean>
<!-- 把Session工厂注入给hibernateTemplate -->
<!-- 解释一下hibernateTemplate：hibernateTemplate提供了很多方便的方法，在执行时自动建立HibernateCallback 对象，例如：load()、get()、save、delete()等方法。-->
<bean id="hibernateTemplate"
   class="org.springframework.orm.hibernate3.HibernateTemplate">
   <constructor-arg>
    <ref local="sessionFactory" />
   </constructor-arg>
</bean>
<!-- 把DAO注入给Session工厂-->
<bean id="userDAO" class="com.alonely.dao.UserDAO">
   <property name="sessionFactory">
    <ref bean="sessionFactory" />
   </property>
</bean>
<!-- 把Service注入给DAO -->
<bean id="userService" class="com.alonely.service.UserService">
   <property name="userDAO">
    <ref local="userDAO" />
   </property>
</bean>
使用<bean>来为每一个bean进行设定，“id”属性是用以设定Bean的实例别名，稍后可以使用id来取得Bean的实例，"class"属性用来指定Bean的类名称，<property>标签的userDAO设定了setter的名称(setUserDAO),并ref属性隐射到到已经设定的bean的id。还可以有value属性。
另外：
<bean id="user" class="com.alonely.struts.action.UserAction">
   <constructor-arg   index=“0”>
      <value>汤青</value>
</constructor>
   <constructor-arg   index=“1”>
      <value>女</value>
</constructor>
</bean>
必须是UserAction中有构造函数，和两个成员变量，index隐射，建议还要有无参数构造函数。这就是Constructor Injection 注入类型。
<!-- 把Action注入给Service -->
<bean name="/user" class="com.alonely.struts.action.UserAction">
   <property name="userService">
    <ref bean="userService" />
   </property>
</bean>
</beans>
下面是Struts+Spring+Hibernate的中applicationContext.xml配置文件分析
<?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:aop="http://www.springframework.org/schema/aop"
   xmlns:tx="http://www.springframework.org/schema/tx"
  xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.0.xsd
    http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-2.0.xsd
    http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

<!--此配置文件整合了Spring和hibernate的配置文件！采用BasicDataSource注入到hibernate sessionFactory中，以得到数据库连接-->
<!-- dbcp相关参数配置见http://marzian.blog.163.com/blog/static/266863120086845013920-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
   <property name="driverClassName">
    <value>oracle.jdbc.driver.OracleDriver</value>
   </property>
   <property name="url">
    <value>jdbc:oracle:thin:@10.18.100.52:1521:dxcp1</value>
   </property>
   <property name="username">
    <value>newgspls</value>
   </property>
   <property name="password">
    <value>newgspls</value>
   </property>
   <property name="initialSize">
    <value>1</value>
   </property>
   <property name="maxActive">
    <value>60</value>
   </property>
   <property name="minIdle">
    <value>1</value>
   </property>
   <property name="maxWait">
    <value>6000</value>
   </property>
   <property name="validationQuery">
    <value>select user from dual</value>
   </property>
    </bean>  
   <!--从连接池中抽取出本地数据库JDBC对象 几种JDBC对象抽取器，可根据不同的应用服务器进行调整
   WebLogic：WebLogicNativeJdbcExtractor
        WebSphere：WebSphereNativeJdbcExtractor
        JBoss：JBossNativeJdbcExtractor
-->
    <bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor" lazy-init="true"></bean>
   
    <!-- s可以使用Spring的JDBC帮助类jdbcTemplate-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource"><ref bean="dataSource"/></property>
    </bean>
    <!--Spring 提供了两种LobHandler 用于处理Blob数据
    DefaultLobHandler：适用于大部分的数据库，如SqlServer，MySQL，对Oracle 10g也适用，但不适用于Oracle9i
oracleLobHandler：适用于Oracle 9i和Oracle 10g。
    -->
    <bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler" lazy-init="true">
    <property name="nativeJdbcExtractor">
       <ref local="nativeJdbcExtractor" />
    </property>
</bean>
<!--Hibernate Session工厂配置-->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
   <property name="dataSource">
            <ref local="dataSource"/>
        </property>
        <property name="lobHandler" ref="lobHandler"/>
        <property name="mappingResources">
            <list>
            <!-- hibernate实体映射文件！即生成的*.hbm.xml-->                    
     <value>com/dao/hibernate/xml/MaintenanceWork.hbm.xml</value>        
     <value>com/dao/hibernate/xml/SignIn.hbm.xml</value>        
            </list>
        </property>
        <!-- sessionFactory相关配置-->
        <property name="hibernateProperties">
        <props>
           <prop key="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</prop>
           <prop key="hibernate.show_sql">true</prop>
           <!--采用Hibernate2.0的HSql解释器，解决了中文问题-->
           <prop key="hibernate.query.factory_class">org.hibernate.hql.classic.ClassicQueryTranslatorFactory</prop>
           <!--打开Query Cache开关,需要Cache的query需要单独配置-->
           <prop key="hibernate.cache.use_query_cache">true</prop>
     <prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>
        </props>
        </property>
</bean>

<!--事务管理器配置-->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
   <property name="sessionFactory">
    <ref local="sessionFactory"/>
   </property>
</bean>
<!--AOP 事务配置-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
      <!-- the transactional semantics... -->
       <tx:attributes>
           <!-- all methods starting with 'get' are read-only -->
           <tx:method name="get*" read-only="true"/>
           <tx:method name="add*" read-only="false"/>
           <tx:method name="insert*" read-only="false"/>
           <tx:method name="update*" read-only="false"/>
           <tx:method name="del*" read-only="false"/>
           <tx:method name="audit*" read-only="false"/>
           <!-- other methods use the default transaction settings (see below) -->
           <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut id="SysFileOperation" expression="execution(* com.biz.system.SysFilesBiz.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="SysFileOperation"/>
    </aop:config>
   
   
<!-- jdbc Dao 配置begion -->
<bean id="jdbcDao" class="com.gsww.newgspls.dao.JdbcDao">
   <property name="ds">
    <ref local="dataSource"/>
   </property>
</bean>

<!-- 信息发布配置开始-->
   <bean id="sysInfoBiz" class="com.biz.info.SysInfoBiz">
    <property name="sysInfoDao">
    <ref local="sysInfoDao" />
   </property>
    </bean>  
<bean id="sysInfoDao" class="com.dao.info.SysInfoDao">
   <property name="sessionFactory">
    <ref local="sessionFactory"/>
   </property>
</bean>
</beans>
业务类SysInfoBiz
在applicationContext.xml配置注入关系后，在业务类中通过set注入即可得到SysInfoDao
package com.biz.info;

import java.util.List;
import com.dao.info.SysInfoDao;
import com.domain.info.SysInfo;
public class SysInfoBiz {
private SysInfoDao sysInfoDao = null;
   
public boolean isRead(SysInfo sysInfo, String reader) {
   if (sysInfo.getInfoReader() != null) {
    String str = sysInfo.getInfoReader();
    if (str.indexOf(",") < 0) {
     return (str.contains(reader));
    } else {
     String pstr = reader + ",";
     String astr = "," + reader;
     String str1 = "," + reader + ",";
     return (str.startsWith(pstr) || str.endsWith(astr) || str
       .contains(str1));
    }
   } else {
    return false;
   }
}

public int readTime(SysInfo sysInfo) {
   if (sysInfo.getInfoReader() != null) {
    String str = sysInfo.getInfoReader();
    String[] str1 = str.split(",");
    return str1.length;
   } else {
    return 0;
   }
}

public boolean addReader(SysInfo sysInfo, String reader) {
   if (reader != null && !reader.equals("null")
     && !isRead(sysInfo, reader)) {
    if (sysInfo.getInfoReader() != null
      && !sysInfo.getInfoReader().equals("null")
      && !sysInfo.getInfoReader().equals("")) {
     sysInfo.setInfoReader(sysInfo.getInfoReader() + "," + reader);
    } else {
     sysInfo.setInfoReader(reader);
    }
    try {
     sysInfoDao.update(sysInfo);
    } catch (Exception re) {
     re.printStackTrace();
    }
    return true;
   } else {
    return false;
   }
}

public void delete(SysInfo persistentInstance) {
   sysInfoDao.delete(persistentInstance);
}
public List findAll() {
   return sysInfoDao.findAll();
}
public List findByExample(SysInfo instance) {
   return sysInfoDao.findByExample(instance);
}

public SysInfo findById(String id) {
   return sysInfoDao.findById(id);
}

public void save(SysInfo transientInstance) {
   transientInstance.setFlag("1");
   sysInfoDao.save(transientInstance);
}

public void update(SysInfo transientInstance) {
   transientInstance.setFlag("1");
   sysInfoDao.update(transientInstance);
}
public SysInfoDao getSysInfoDao() {
   return sysInfoDao;
}
public void setSysInfoDao(SysInfoDao sysInfoDao) {
   this.sysInfoDao = sysInfoDao;
}
public PageDAO getPageDao() {
   return pageDao;
}
public void setPageDao(PageDAO pageDao) {
   this.pageDao = pageDao;
}
}
SysInfoDao 连接数据库类
package com.dao.info;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.gsww.newgspls.domain.info.SysInfo;
public class SysInfoDao extends HibernateDaoSupport {

public void save(SysInfo transientInstance) {
   try {
    getHibernateTemplate().save(transientInstance);
   } catch (RuntimeException re) {
    throw re;
   }
}

public void update(SysInfo transientInstance) {
   try {
    getHibernateTemplate().update(transientInstance);
   } catch (RuntimeException re) {
    throw re;
   }
}

public void delete(SysInfo persistentInstance) {
   try {
    getHibernateTemplate().delete(persistentInstance);
   } catch (RuntimeException re) {
    throw re;
   }
}

public SysInfo findById(java.lang.String id) {
   try {
    SysInfo instance = (SysInfo) getHibernateTemplate().get(
      "com.domain.info.SysInfo", id);
    return instance;
   } catch (RuntimeException re) {
    throw re;
   }
}
}