ssh,hibernate动态映射多表

      最近在做OA系统（ssh），一直在想如何把框架架得更完善，此前已经在框架里集成springMVC,读写分离（这个在另一篇文章里会有说明怎么做），这几天在想如果是大数据，要分表要怎么来弄，不可能每一个表都写一个实体来映射，这样太不灵活，也不现实！

    oa考勤本来数据不多，如果分表一般以年份来分表。今天研究的是以用户来分表。

    网上找了些资料，说是可以用NamingStrategy来实现动态映射表名。

   发现sessionFactory里面有个namingStrategy属性可以注入，这个东东就是hibernate在表映射时要用的，关系啥的都放在这个里面，只要重写它就行。不过只有在容器启动时才会加载这个，也就是只会执行一次，以后就算动态设置了namingStrategy也不会再加载改变映射关系了，那会就是一个sessionFactory只能在启动时对应一个namingStrategy；如此要想对应多个相同表映射就须得要有多个sessionFactory才行；

   可是spring并没有提供像AbstractRoutingDataSource动态数据源这样的接口给我们用，那怎么办，只能自己写一个了，既然我们要多个sessionFactory，但我们的底层dao里是只注入一个sessionFactory，那么我们就模仿动态数据源一样写个路由DynamicSessionFactory继承sessionFactory，并且提供一个动态getHibernateSessionFactory的方法，然后写个实现DynamicSessionFactoryImpl重写sessionFactory里面的方法，让里面的方法在取sessionFactory时全部通过getHibernateSessionFactory得到，而getHibernateSessionFactory就是动态根据我们的设置来取sessionFactory的了，这样就实现动态取不同的sessionFactory了。

    getHibernateSessionFactory靠ThreadLocal的特性，给当前线程设置sessionFactory的bean名称，然后在取时就拿这个bean名称取对应的bean就行了。

    在配好这些后，当时想的是用spring的aop来拦截service层的方法来进行动态设置bean名称，在实践后发现这样做在单表或者说是在一次请求只调一个service方法时且不懒加载时才可以，当一个action请求有两个以上service方法时，就完了，每调一个方法sessionFactory就会重新设置一下,这样session就一定会关闭了，这样在调完方法查出数据后如果去懒加载get数据就会发现没有session，就报错了（collection is not associated with any session）。所以我们不能在service层做文章，得在action层甚至是filter里做动态设置才行。

   发现在web.xml里有个org.springframework.orm.hibernate4.support.OpenSessionInViewFilter，这个的用处就是为了解决一个请求里session统一的问题的，不过这里虽然配置了，但一在service层动态设置sessionFactory后，每次都给改变了。所以我们只要在这个filter里来动态设置sessionFactory就行了，这样每次一个请求就设置一个sessionFactory，直到完成。实现：就是写一个MyOpenSessionInViewFilter去继承OpenSessionInViewFilter然后重写它的lookupSessionFactory方法，在每次请求lookupSessionFactory动态设上自己要的sessionFactory就行了。

  这样设置完成后测试发现可以达到效果，可点着点着就发现问题了，一到使用多线程（在生成多人的排班考勤时我都是使用多线程来生成的）时，就会报当前线程的session为空。仔细想想也不难理解，每次设置时我都是只设置了请求的这条线程的话，也就是只有主线程是有了的长时间session存在的，当用多线程时，每一条新线程都在拿sessionFactory时都会调ThreadLocal当前线程的存的sessionFactory的名称来取，这样当然就取不到了，想着就把主线程的sessionFactory的名称也传进子线程设置在子线程这样就有了吧，结果发现是有了，sessionFactory取对了，可是在取当前session时又报错取不到了。这又是怎么回事呢，于是又想着把主线程那个session也传进去试试，发现传进去，哎，不报错了，是取得到了，我去，却发现它不在事务里了。至此得整理下思路，一个线程一个session的话，那多线程中的子线程就不能再用那个session了，得是它自己启动一个session事务，可想着那些service方法本来我就是有设置事务的呀！然后去看看事务的配置文件，哎哟喂，事务配的是org.springframework.orm.hibernate4.HibernateTransactionManager，里面配的是路由sessionFactory，原来是事务没有动态呀，这样每次调用时都是同一个，没有动态给多个sessionFactory都设置事务。于是写一个动态事务DynamicTransactionManager去继承HibernateTransactionManager，并重写getSessionFactory和getDataSource方法，这样就实现了动态事务的动态sessionFactory了。然后再测试下多线程的，搞定！

   历时两天多，终于搞定了！

   平时没怎么写文章，文字表达能力不好，凑合着看吧，以后得多练练

   下面上一下代码吧！

 

    动态表名实现类:

 

/**
 * 动态表名
 */
import java.text.DecimalFormat;
import java.util.ArrayList;

import org.hibernate.cfg.DefaultNamingStrategy;

public class TNamingStrategy extends DefaultNamingStrategy {

	 /**
	 *
	 */
	private static final long serialVersionUID = 1L;

    private static final DecimalFormat df = new DecimalFormat();
    private static ArrayList<String> rollingTables = new ArrayList<String>();
    private String suffix;//表后缀
    static {
        rollingTables.add("KQ_ATTENDANCE");//有哪些表需要多个映射的就在这里add进去
        rollingTables.add("KQ_DUTY_ROSTER");
        df.applyPattern("00");
    }
/*    @Override
    public String classToTableName(String className) {
     // TODO Auto-generated method stub
     return tableName(StringHelper.unqualify(className).toUpperCase());
    } */
    /**
     *
     *
     *  class里显式设置了表名，就调用 tableName
     *  没有显示就调用  classToTableName
     */
    public String tableName(String tableName) {
        String stroeTable = tableName;
        // 对指定的表名计算实际存储表名
        if (rollingTables.contains(tableName.toUpperCase())&&suffix!=null) {
            stroeTable += "_" + suffix;
            System.out.println("store record into [" + stroeTable + "]");
        }

        return stroeTable;
    }
	public String getSuffix() {
		return suffix;
	}
	public void setSuffix(String suffix) {
		this.suffix = suffix;
	}



	}

   当前线程保存sessonFactory  bean名称：

 

 

public abstract class CustomerContextHolder {

    private static final ThreadLocal<String> contextHolder = new ThreadLocal<String>();

    public static void setCustomerType(String customerType) {
        contextHolder.set(customerType);
    }

    public static String getCustomerType() {
    	if(contextHolder.get()==null)
    	{
    		System.out.println("空啦");

    	 setCustomerType("master");
    	}
        return contextHolder.get();
    }

    public static void clearCustomerType() {
        contextHolder.remove();
    }


}

 

 

  路由sessionFactory:

 

 
import org.hibernate.SessionFactory;


public interface DynamicSessionFactory extends SessionFactory {

    public SessionFactory getHibernateSessionFactory();
}

 

 

路由sessionFactory实现:

 

import java.io.Serializable;
import java.sql.Connection;
import java.util.Map;
import java.util.Set;

import javax.naming.NamingException;
import javax.naming.Reference;

import org.hibernate.Cache;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionBuilder;
import org.hibernate.SessionFactory;
import org.hibernate.StatelessSession;
import org.hibernate.StatelessSessionBuilder;
import org.hibernate.TypeHelper;
import org.hibernate.engine.spi.FilterDefinition;
import org.hibernate.metadata.ClassMetadata;
import org.hibernate.metadata.CollectionMetadata;
import org.hibernate.stat.Statistics;

/**
 * <b>function:</b> 动态sessionFactory实现

 * @version 1.0
 */
@SuppressWarnings({ "unchecked", "deprecation" })
public class DynamicSessionFactoryImpl implements DynamicSessionFactory {

    private static final long serialVersionUID = 5384069312247414885L;

    private Map<Object, SessionFactory> targetSessionFactorys;
    private SessionFactory defaultTargetSessionFactory;



    /**
     *
     * <b>function:</b> 重写这个方法，这里最关键

     */
    @Override
    public SessionFactory getHibernateSessionFactory() {
        SessionFactory targetSessionFactory = targetSessionFactorys.get(CustomerContextHolder.getCustomerType());
      //  System.out.println("CustomerContextHolder.getCustomerType():"+CustomerContextHolder.getCustomerType());
     //   System.out.println("targetSessionFactory:"+targetSessionFactory);
        if (targetSessionFactory != null) {
            return targetSessionFactory;
        } else if (defaultTargetSessionFactory != null) {
            return defaultTargetSessionFactory;
        }
        return null;
    }

    public SessionFactory getObject()
        {
          return this.getHibernateSessionFactory();
     }
    @Override
    public void close() throws HibernateException {
        this.getHibernateSessionFactory().close();
    }

    @Override
    public boolean containsFetchProfileDefinition(String s) {
        return this.getHibernateSessionFactory().containsFetchProfileDefinition(s);
    }

    @Override
    public void evict(Class clazz) throws HibernateException {
        this.getHibernateSessionFactory().evict(clazz);
    }

    @Override
    public void evict(Class clazz, Serializable serializable) throws HibernateException {
        this.getHibernateSessionFactory().evict(clazz, serializable);
    }

    @Override
    public void evictCollection(String s) throws HibernateException {
        this.getHibernateSessionFactory().evictCollection(s);
    }

    @Override
    public void evictCollection(String s, Serializable serializable) throws HibernateException {
        this.getHibernateSessionFactory().evictCollection(s, serializable);
    }

    @Override
    public void evictEntity(String entity) throws HibernateException {
        this.getHibernateSessionFactory().evictEntity(entity);
    }

    @Override
    public void evictEntity(String entity, Serializable serializable) throws HibernateException {
        this.getHibernateSessionFactory().evictEntity(entity, serializable);
    }

    @Override
    public void evictQueries() throws HibernateException {
        this.getHibernateSessionFactory().evictQueries();
    }

    @Override
    public void evictQueries(String queries) throws HibernateException {
        this.getHibernateSessionFactory().evictQueries(queries);
    }

    @Override
    public Map<String, ClassMetadata> getAllClassMetadata() {
        return this.getHibernateSessionFactory().getAllClassMetadata();
    }

    @Override
    public Map getAllCollectionMetadata() {
        return this.getHibernateSessionFactory().getAllClassMetadata();
    }

    @Override
    public Cache getCache() {
        return this.getHibernateSessionFactory().getCache();
    }

    @Override
    public ClassMetadata getClassMetadata(Class clazz) {
        return this.getHibernateSessionFactory().getClassMetadata(clazz);
    }

    @Override
    public ClassMetadata getClassMetadata(String classMetadata) {
        return this.getHibernateSessionFactory().getClassMetadata(classMetadata);
    }

    @Override
    public CollectionMetadata getCollectionMetadata(String collectionMetadata) {
        return this.getHibernateSessionFactory().getCollectionMetadata(collectionMetadata);
    }

    @Override
    public Session getCurrentSession() throws HibernateException {
        return this.getHibernateSessionFactory().getCurrentSession();
    }

    @Override
    public Set getDefinedFilterNames() {
        return this.getHibernateSessionFactory().getDefinedFilterNames();
    }

    @Override
    public FilterDefinition getFilterDefinition(String definition) throws HibernateException {
        return this.getHibernateSessionFactory().getFilterDefinition(definition);
    }

    @Override
    public Statistics getStatistics() {
        return this.getHibernateSessionFactory().getStatistics();
    }

    @Override
    public TypeHelper getTypeHelper() {
        return this.getHibernateSessionFactory().getTypeHelper();
    }

    @Override
    public boolean isClosed() {
        return this.getHibernateSessionFactory().isClosed();
    }

    @Override
    public Session openSession() throws HibernateException {
        return this.getHibernateSessionFactory().openSession();
    }

    @Override
    public StatelessSession openStatelessSession() {
        return this.getHibernateSessionFactory().openStatelessSession();
    }

    @Override
    public StatelessSession openStatelessSession(Connection connection) {
        return this.getHibernateSessionFactory().openStatelessSession(connection);
    }

    @Override
    public Reference getReference() throws NamingException {
        return this.getHibernateSessionFactory().getReference();
    }

    public void setTargetSessionFactorys(Map<Object, SessionFactory> targetSessionFactorys) {
        this.targetSessionFactorys = targetSessionFactorys;
    }

    public void setDefaultTargetSessionFactory(SessionFactory defaultTargetSessionFactory) {
        this.defaultTargetSessionFactory = defaultTargetSessionFactory;
    }


	@Override
	public SessionFactoryOptions getSessionFactoryOptions() {

		return this.getHibernateSessionFactory().getSessionFactoryOptions();
	}


	@Override
	public SessionBuilder withOptions() {

		return this.getHibernateSessionFactory().withOptions();
	}


	@Override
	public StatelessSessionBuilder withStatelessOptions() {

		return this.getHibernateSessionFactory().withStatelessOptions();
	}


}

 动态的事务管理器:

 

 

import javax.sql.DataSource;

import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate4.HibernateTransactionManager;
import org.springframework.orm.hibernate4.SessionFactoryUtils;


/**
 * <b>function:</b> 重写HibernateTransactionManager事务管理器，实现自己的动态的事务管理器

 * @version 1.0
 */
public class DynamicTransactionManager extends HibernateTransactionManager {

    private static final long serialVersionUID = -4655721479296819154L;

    /**
     * @see org.springframework.orm.hibernate4.HibernateTransactionManager#getDataSource()
     * <b>function:</b> 重写

     */
    @Override
    public DataSource getDataSource() {
        return SessionFactoryUtils.getDataSource(getSessionFactory());
    }

    /**
     * @see org.springframework.orm.hibernate4.HibernateTransactionManager#getSessionFactory()
     * <b>function:</b> 重写
     */
    @Override
    public SessionFactory getSessionFactory() {
        DynamicSessionFactory dynamicSessionFactory = (DynamicSessionFactory) super.getSessionFactory();
        SessionFactory hibernateSessionFactory = dynamicSessionFactory.getHibernateSessionFactory();
        return hibernateSessionFactory;
    }
}

 自己的OpenSessionInViewFilter，为的是一个请求一个session并且有选择的设定sessionFactory:

 

 

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate4.SessionFactoryUtils;
import org.springframework.orm.hibernate4.SessionHolder;
import org.springframework.orm.hibernate4.support.AsyncRequestInterceptor;
import org.springframework.orm.hibernate4.support.OpenSessionInViewFilter;
import org.springframework.transaction.support.TransactionSynchronizationManager;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.request.async.WebAsyncManager;
import org.springframework.web.context.request.async.WebAsyncUtils;
import org.springframework.web.context.support.WebApplicationContextUtils;

import sy.model.base.frame.SessionInfo;
import sy.model.base.frame.Syuser;
import sy.util.base.ConfigUtil;
/**
 * 自己的OpenSessionInViewFilter，为的是一个请求一个session并且有选择的设定sessionFactory
 * @author miraclerz
 *
 */
public class MyOpenSessionInViewFilter extends OpenSessionInViewFilter {
	private HttpServletRequest request;

	@Override
	protected SessionFactory lookupSessionFactory() {

		WebApplicationContext wac = WebApplicationContextUtils
				.getRequiredWebApplicationContext(getServletContext());
		String sessionFactoryName = getSessionFactoryBeanName();

		 //动态设置sessionFactory名称了
		 CustomerContextHolder.setCustomerType("master");
		 

		DynamicSessionFactoryImpl dynamicSessionFactoryImpl = wac.getBean(
				sessionFactoryName, DynamicSessionFactoryImpl.class);

		return dynamicSessionFactoryImpl.getObject();
	}

	 

}

 

 

上一下配置文件:

 

  

<?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:c="http://www.springframework.org/schema/c" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:lang="http://www.springframework.org/schema/lang" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xmlns:task="http://www.springframework.org/schema/task" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
		http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd
		http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">

 <!--配置  -->

    <!-- 加载properties配置文件 -->
    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:switchSessionFactory/sessionFactoryJdbc.properties</value>
            </list>
        </property>
    </bean>
   <bean id="sessionFactoryDataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
			<property name="driverClassName" value="${sessionFactory.jdbc.driverClassName}" />
	        <property name="url" value="${sessionFactory.jdbc.url}" />
	        <property name="username" value="${sessionFactory.jdbc.username}" />
	        <property name="password" value="${sessionFactory.jdbc.password}" />
			<!-- 初始化连接大小 -->
		<property name="initialSize" value="1" />
		<!-- 连接池最大使用连接数量 -->
		<property name="maxActive" value="300" />
		<!-- 连接池最小空闲 -->
		<property name="minIdle" value="0" />
		<!-- 获取连接最大等待时间 -->
		<property name="maxWait" value="60000" />

		<!-- <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="33" /> -->

		<property name="validationQuery" value="${sessionFactory.hibernate.validationQuery}" />
		<!-- 检测有效性 -->
		<property name="testOnBorrow" value="true" />
		<property name="testOnReturn" value="false" />
		<property name="testWhileIdle" value="true" />

		<!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
		<property name="timeBetweenEvictionRunsMillis" value="19000" />
		<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
		<property name="minEvictableIdleTimeMillis" value="19000" />

		<!-- 打开removeAbandoned功能 -->
		<property name="removeAbandoned" value="true" />
		<!-- 1800秒，也就是30分钟   -->
		<property name="removeAbandonedTimeout" value="1800" />
		<!-- 关闭abanded连接时输出错误日志 -->
		<property name="logAbandoned" value="true" />

        <!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
		<property name="poolPreparedStatements" value="true" />
		<property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
		<!-- 监控数据库 -->
		<!-- <property name="filters" value="mergeStat" /> -->
		<property name="filters" value="stat" />
	</bean>


  <!-- 配置sessionFactory -->
    <bean id="masterSessionFactory"
       class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="sessionFactoryDataSource"></property>
         <property name="hibernateProperties">
            <props>
				<prop key="hibernate.hbm2ddl.auto">${switch_session_factory_hibernate.hbm2ddl.auto}</prop>
				<prop key="hibernate.dialect">${switch_session_factory_hibernate.dialect}</prop>
				<prop key="hibernate.show_sql">${switch_session_factory_hibernate.show_sql}</prop>
				<prop key="hibernate.format_sql">${switch_session_factory_hibernate.format_sql}</prop>
				<prop key="hibernate.use_sql_comments">${switch_session_factory_hibernate.use_sql_comments}</prop>
			    <prop key="current_session_context_class">thread</prop>
			</props>
        </property>

       <!-- 自动扫描注解方式配置的hibernate类文件 -->
		<property name="packagesToScan">
			<list>
				<value>sy.model.base</value>
			</list>
		</property>

    </bean>

 <import resource="classpath:switchSessionFactory/moreSessionFactory/*.xml" />

    <!-- 配置sessionFactory 多个的实现-->
    <bean id="sessionFactory"
       class="sy.datasource.sessionFactory.DynamicSessionFactoryImpl">
          <property name="targetSessionFactorys">
            <map>
                <entry value-ref="masterSessionFactory" key="master"/>
 
                <entry value-ref="s_adminSessionFactory" key="s_admin"/>
            </map>
          </property>
         <property name="defaultTargetSessionFactory" ref="masterSessionFactory"/>
    </bean>


    <!-- 配置事务管理器 -->
    <bean id="switch_session_factory_transactionManager"
         class="sy.datasource.sessionFactory.DynamicTransactionManager">
       <property name="sessionFactory" ref="sessionFactory"></property>

    </bean>




<!-- 拦截器方式配置事物 -->
	<tx:advice id="switch_session_factory_txAdvice" transaction-manager="switch_session_factory_transactionManager">
		<tx:attributes>
			<tx:method name="save*" propagation="REQUIRED" />
			<tx:method name="update*" propagation="REQUIRED" />
			<tx:method name="saveOrUpdate*" propagation="REQUIRED" />
			<tx:method name="delete*" propagation="REQUIRED" />
			<tx:method name="grant*" propagation="REQUIRED" />

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

			<tx:method name="*" propagation="REQUIRED" read-only="true" />
		</tx:attributes>
	</tx:advice>
	<aop:config>
		<!-- 第一个*代表所有的返回值类型；第二个*代表所有的类；第三个*代表类所有方法；..代表子或者孙子包；最后一个..代表所有的参数 -->
		<aop:pointcut id="switch_session_factory_transactionPointcut" expression="(execution(* sy.service.base..*Impl.*(..)))" />
		<aop:advisor pointcut-ref="switch_session_factory_transactionPointcut" advice-ref="switch_session_factory_txAdvice" />


	</aop:config>

</beans>

 

每一个sessionFactory就加一个这个配置:

<?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:c="http://www.springframework.org/schema/c" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:lang="http://www.springframework.org/schema/lang" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xmlns:task="http://www.springframework.org/schema/task" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
		http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd
		http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">


<!--自定义表命名  多表映射  admin  -->

	<bean id="s_adminNamingStrategy" class="sy.datasource.sessionFactory.strategy.TNamingStrategy">
    <property name="suffix" value="s_admin" />
    </bean>
    <bean id="s_adminSessionFactory" parent="masterSessionFactory">
        <property name="namingStrategy" ref="s_adminNamingStrategy"/>
    </bean>


</beans>

 最后在web.xml加上

   

 <filter>
    <filter-name>openSessionInView</filter-name>
   <!--  <filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class> -->
    <filter-class>sy.datasource.sessionFactory.MyOpenSessionInViewFilter</filter-class>
    <init-param>
      <param-name>singleSession</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>

 到此，spring下的hibernate多表映射就大功造成了!