searchbean.java

j2ee专业项目实例开发.附有三个项目源码

//修改好
package music;
import java.util.*;
import java.io.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

public class SearchBean
{
	private String searchBy;
	ItemHome itemHome;
	Item item;
	Vector vect;
	public SearchBean()
	{
		vect = new Vector();
		try
		{
			Context ctx = new InitialContext();
			Object obj = ctx.lookup("java:comp/env/ejb/Item");
			itemHome = (ItemHome)PortableRemoteObject.narrow(obj, ItemHome.class);
		}
		catch (Exception e)
		{
			System.out.println("找不到Item本地接口" + e);
		}
	}
	public void setSearchBy(String str)
	{
		searchBy = str;
		searchBy = searchBy.trim();
	}
	public String getSearchBy()
	{
		return searchBy;
	}

	public Vector performSearch()
	{
		try
		{
			if (searchBy != null)
			{
				Collection collect = itemHome.findByType(searchBy);
				Iterator itr = collect.iterator();
				while (itr.hasNext())
				{
					int i = 0;
					item = (Item)itr.next();
					String title = item.gettitle();
					vect.add(i, title);
					i++;
				}
			}
			else
			{
				vect.add(0, "");
			}
		}
		catch (Exception e)
		{
			System.out.println("查找类时发生错误" + e);
		}
		return vect;
	}
}