Hibernate 延迟加载，但有时候要直接加载集合，就要通过手动加载的方法

 public static Object getForInitSet(String className, java.io.Serializable id) {
  Session s = BaseDB.getSession();
  Object obj = null;
  try {
   s.beginTransaction();
   obj = s.get(className, id);
   Field[] fields=obj.getClass().getDeclaredFields();//getFields();
   for (int i = 0; i < fields.length; i++) {
    try {
     fields[i].getType().asSubclass(Collection.class);
//    if("Set".equalsIgnoreCase(fields[i].getType().getSimpleName())){
     Object temp=null;
     try {
      temp = PropertyUtils.getProperty(obj, fields[i]
        .getName());
     } catch (Exception e) {
     }
     if (temp != null && !Hibernate.isInitialized(temp))
      try {
       Hibernate.initialize(temp);
      } catch (HibernateException e) {
       System.out.println(fields[i].getName()
         + " is ill in " + obj.getClass().getName());
      }
//    }
    } catch (ClassCastException e1) {
    }
   }
   s.getTransaction().commit();
  } catch (HibernateException e) {
   e.printStackTrace();
  } catch (SecurityException e) {
   e.printStackTrace();
  }  finally {
      if (s != null)
        s.close();
    }
  return obj;
 }