singerwait.java

手机在线系统 采用Java 中的J2ME, JSP 跟MySql 运行环境是：jsdk1.4以上

/**
 * @(#)SingerForm.java	1.11 01/08/23
 * Copyright (c) 2004-2005 wuhua of workroom Inc. All Rights Reserved.
 * @version 	1.0, 10/05/2004
 * @author 	饶荣庆
 * @author 	余煜辉
 */
package com.j2me.recreation.singer;

import com.j2me.language.*;
import com.j2me.recreation.*;
import com.j2me.common.*;
import java.io.*;
import javax.microedition.lcdui.*;


/**
 *此类文件是用来描述下载艺术家信息时候的等待界面跟保存信息
 */
public class SingerWait extends WaitCanvas
{
	
	private String strURL;
	private String parameter;
	private SingerForm singer;

	/*错误*/
	private Alert errorAlert = null;

	public SingerWait(String strURL, String parameter)
	{
		super();
		this.strURL = strURL;
		this.parameter = parameter;
	}

	/*显示窗体的方法*/
	public  void showForm(Display display, SingerForm singer)	//用来显示界面
	{
		this.display = display;
	   	this.singer = singer;
		super.displayAble = singer;  //用于显示下载好以后的界面
		this.display.setCurrent(this);
	}

	public void download()
	{
		/*加快下载速度的线程*/
		Thread t = new Thread()
		{
			String html = "";
			Image image = null;
			public void run() 
			{
				try
				{			
					//获得服务器用户保存的内容
					html = ConnectHttp.invokeJSP(strURL, parameter);

				
				    //处理HTML标记语言
				    html = DisposeHTML.getBody(html);	
				    String[] data = new String[5];
					data = DisposeData.getStringGroup(html, "~", 5);

					//从网络上获取图象资源
			        image = ConnectHttp.getJspImage(RecreationServerURL.getURL() + "singer/" + data[2] + "/" + data[2] + ".png");
					//"http://127.0.0.1:8080/jsp/recreation/image/twins.png");
					
					try
					{
						singer.photo.setImage(image);
					}
					catch(IllegalArgumentException i)
					{
						System.out.println("fdsf" + i.getMessage());
					}
					singer.url = RecreationServerURL.getURL() + "singer/" + data[2] + "/"; //网络图片路径
					singer.append("你要找的艺术家详细信息如下：\n" + "姓名：  " + data[0]);
                    singer.record.setText(data[1]);
					singer.special.setText(data[3]);
					singer.action.setText(data[4]);
					singer.append(singer.photo);
					singer.append(singer.record);
					singer.append(singer.special);
					singer.append(singer.action);
					singer.addCommand(singer.browseCommand);
					singer.delete(0);
					singer.removeCommand(singer.okCommand);

                    /*下载完了，设置显示下一个窗体*/
				    isNext = true;  //赋值为出，通知基类显示下个界面
					System.out.println("DFDFF");
					System.out.println(isNext);
		        }
		        catch(IOException e)
		        {
					errorAlert  = new Alert("ERROR", "对不起!连接错误", null, AlertType.ERROR);	
					errorAlert.setTimeout(2000);
					display.setCurrent(errorAlert, singer);
					System.out.println(e);
			    }
				catch(NullPointerException e)
				{
					System.out.println(e);
				}
				catch(IllegalArgumentException e)
				{
					errorAlert  = new Alert("ERROR", "对不起!下载图片时出错，可能原因是图片不存在，或者是路径错误！", null, AlertType.ERROR);	
					errorAlert.setTimeout(2000);
					display.setCurrent(errorAlert, singer);
					System.out.println(e);
				}
				if (html.trim().compareTo("false") == 0) //找不到这个歌手
				{
					errorAlert  = new Alert("ERROR", "对不起!找不到这个歌手！", null, AlertType.ERROR);	
					errorAlert.setTimeout(2000);
					display.setCurrent(errorAlert, singer);
				}


			}
		};
		
		//启动线程
		t.start();
	}



}