呵呵，在忙一个项目，潜水很久，现在冒个泡：
(本文适用在struts+spring+hibernate3上做开发的虫虫们)
类名：HibernateUtil
package com.antbee.j2eemodel.util;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Iterator;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
public class HibernateUtil extends HibernateDaoSupport {
/**
* 初始化POJO类
* @author @家军
* @param object POJO对象
* @param methodName 方法名称
* @return
* @version 1.0
*/
public void initialize(Object object, String methodName) throws SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {
String[] methodArray = methodName.split("\\.");
Method method = null;
Object initializeObject = object;
if(methodArray.length == 1){
this.getHibernateTemplate().lock(initializeObject, org.hibernate.LockMode.NONE);
method = object.getClass().getMethod(methodArray[0], new Class[] {});
initializeObject = method.invoke(initializeObject, new Object[] {});
this.getHibernateTemplate().initialize(initializeObject);
}else{
for(int i=0;i<methodArray.length;i++){
method = initializeObject.getClass().getMethod(methodArray[i], new Class[] {});
initializeObject = method.invoke(initializeObject, new Object[] {});
}
this.getHibernateTemplate().lock(initializeObject, org.hibernate.LockMode.NONE);
this.getHibernateTemplate().initialize(initializeObject);
}
}
/**
* 初始化POJO类
* @author @家军
* @param object POJO对象
* @param methodName 方法名称数组
* @return
* @version 1.0
*/
public void initialize(Object object, String methodName[])
throws SecurityException, NoSuchMethodException,
IllegalArgumentException, IllegalAccessException, InvocationTargetException {
for (int i = 0; i < methodName.length; i++) {
String[] methodArray = methodName[i].split("\\.");
Method method = null;
Object initializeObject = object;
if(methodArray.length == 1){
this.getHibernateTemplate().lock(initializeObject, org.hibernate.LockMode.NONE);
method = object.getClass().getMethod(methodArray[0], new Class[] {});
initializeObject = method.invoke(initializeObject, new Object[] {});
this.getHibernateTemplate().initialize(initializeObject);
}else{
for(int j=0;j<methodArray.length;j++){
method = initializeObject.getClass().getMethod(methodArray[j], new Class[] {});
initializeObject = method.invoke(initializeObject, new Object[] {});
}
this.getHibernateTemplate().lock(initializeObject, org.hibernate.LockMode.NONE);
this.getHibernateTemplate().initialize(initializeObject);
}
}
}
/**
* 初始化POJO类
* @author @家军
* @param object POJO对象
* @return
* @version 1.0
*/
public void initialize(Object object) throws SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {
this.getHibernateTemplate().lock(object, org.hibernate.LockMode.NONE);
this.getHibernateTemplate().initialize(object);
}
/**
* 初始化POJO类
* @author @家军
* @param collection POJO对象集合
* @param methodName 方法名称数组
* @return
* @version 1.0
*/
public void initialize(Collection collection, String methodName[])
throws SecurityException, NoSuchMethodException,
IllegalArgumentException, IllegalAccessException, InvocationTargetException {
for(Iterator i=collection.iterator();i.hasNext()Wink{
Object object = i.next();
this.initialize(object,methodName);
}
}
/**
* 初始化POJO类
* @author @家军
* @param collection POJO对象集合
* @param methodName 方法名称
* @return
* @version 1.0
*/
public void initialize(Collection collection, String methodName)
throws SecurityException, NoSuchMethodException,
IllegalArgumentException, IllegalAccessException, InvocationTargetException {
for(Iterator i=collection.iterator();i.hasNext()Wink{
Object object = i.next();
this.initialize(object,methodName);
}
}
}
这个方法的好外是：可以不在hbm.xml的文件当中，指定为lazy=true这个模式，可以直接使用。使用方法如下：
如果你使用SPRING，则需要把hibernateUtil注入其中：
<bean id="hibernateUtilTarget" class="com.antbee.j2eemodel.util.HibernateUtil">
<property name="sessionFactory">
<ref local="mssqlSessionFactory" />
</property>
</bean>
<bean id="hibernateUtil" parent="BaseTransactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="target">
<ref local="hibernateUtilTarget" />
</property>
</bean>
<!--配置基础事务-->
<bean id="BaseTransactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true">
<property name="transactionManager">
<ref bean="mssqltransactionManager" />
</property>
<property name="proxyTargetClass">
<value>true</value>
</property>
<property name="transactionAttributes">
<props>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>
使用示例：
如果你使用STRUTS，则需要这样：
List what_ur_view = XXXManager.find(
.);//取得你要展示的对象
//如果这个对象当中有延迟加载的对象(SET)时，则需要如下加载就行
this.hibernateUtil.initialize(what_ur_view, "getTbShipmentSale");
//其中getTbShipmentSale是其对象(SET也可以操作)
在页面显示的时候，你就可以使用JSTL如下表述：
<c:out value="${what_ur_view.tbShipmentSale.goodsReceivePersonPhone}" />//呵呵，是不是很爽呀。
同样的方法，我们也可以对一个SET在页面进行显示，方法如下：
<c:forEach items="${what_ur_view.tbShipmentProductMappingSet}" var="ProductMapping" varStatus="status">
<c:out value="${ProductMapping.productNum}" />
<c:out value="${ProductMapping.tbOutOfWarehouse.outOfWarehouseNum}" />
</c:forEach>
//呵呵，支持多级嵌套，
在ACTION当中则需要加入hibernateUtil.initialize(what_ur_view.getTbShipmentProductMappingSet(),
new String[] { "getTbProduct", "getTbOutOfWarehouse",
"getTbProductConfigure" });
呵，如果你要是在HIBERNATE当中使用，这个就太简单了吧。
怎么样？呵呵呵，
从此，我对STRUTS的标签深恶痛绝，而对JSTL情有独钟了。