artistclient.java

用J2EE的ＥＪＢ基于容器bean写的一个音乐网站

import java.util.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import javax.ejb.*;
import java.sql.*;
public class ArtistClient
{
	private String iArtist_code,cArtist_name,cArea;

    ArtistHome home;
    Artist remote;
	public String getiArtist_code()
	{
		return iArtist_code;	
	}	
	public String getcArtist_name()
	{
		return cArtist_name;	
	}
	 public String getcArea()
	{
		return cArea;	
	}	
    	
	public void setiArtist_code(String iArtist_code)
	{
		this.iArtist_code=iArtist_code;
	}
	
	public void setcArtist_name(String cArtist_name)
	{
		this.cArtist_name=cArtist_name;	
	}
	public void setcArea(String cArea)
	{
	    this.cArea=cArea;	
	}
	
	public ArtistClient()throws SQLException
	{
		try
		{
			Context init=new InitialContext();
			Object obj=init.lookup("Artist");
			home=(ArtistHome)PortableRemoteObject.narrow(obj,ArtistHome.class);
		}
		catch(Exception e)
		{
			throw new SQLException(e.toString());	
		}	
	}
	
	public String createEvent()throws SQLException
	{
		String Message="";
		try
		{
			remote=home.create( iArtist_code,cArtist_name,cArea);
			Message="the Artist has created";
				
		}
		catch(DuplicateKeyException dupex)
		{
			Message="the code"+iArtist_code+"has been in the DataBase";
			System.out.println(dupex.toString());
		}
		catch(Exception e)
		{
			System.out.println(e.toString());	
		}
		return Message;	
		
		
	}
		public String updateEvent()
	{
		String Message="";
		try
		{
			remote=home.findByPrimaryKey(iArtist_code);
			remote.update(iArtist_code,cArtist_name,cArea);
			Message="Successful!";
		}
		catch(Exception e)
		{
			Message="Modify Failed";
			System.out.println(e.toString());
		}
		return Message;	
	}
	public String deleteEvent()
	{
		String Message="";
		try
		{
			remote=home.findByPrimaryKey(iArtist_code);
			remote.remove();
			Message="Delete Successful";
		}
		catch(Exception e)
		{
			Message="Cannot find the code";
			System.out.println(e.toString());
			
			
		}	
		return Message;
	}
	public Vector findEvent()
	{
	   String Message="";
	   Vector v=new Vector();
	   try
	   {   
	       remote=home.findByPrimaryKey(iArtist_code);
	       String st=remote.getArtistcode();
	       String str=remote.getArtistname();
	       String stri=remote.getArtistarea();
	       v.addElement(st);
	       v.addElement(str);
	       v.addElement(stri);
	       Message="Result by searching ID";
	       	
	   }
	   catch(Exception e)
	   {
	   	  Message="invalid ID,please check your ID";
	   	  
	      System.out.println(e.toString());	
	   }	
	   return v;	
	}
	

}