workthread.java

来自「JAVA手机PDA程序设计入门书籍源代码」· Java 代码 · 共 46 行

import javax.microedition.io.*;
import java.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class WorkThread extends Thread
{	
	String url ;
	Display display ;
	public WorkThread(String url,Display d)
	{
		this.url = url ;
		display = d ;
		System.out.println("准备连接："+this.url) ;
	}
	public void run()
	{
		HttpConnection conn = null;
		InputStream is = null;
		InputStreamReader isr = null ;
		StringBuffer line = new StringBuffer("");
		try {
    			conn = (HttpConnection)Connector.open(url);
			System.out.println("内容长度：" + conn.getLength()) ;
   			is = conn.openInputStream();	
   			isr = new InputStreamReader(is) ;
   			int ic ;			
   			while( (ic = isr.read()) != -1 )
			{
				line.append((char)ic) ;
			}			
 		}catch (Exception ioe) 
 		{
 			System.out.println(ioe);
 		}finally
 		{
 			try
 			{
 				if(conn!=null)
 					conn.close();
 			}catch(Exception e){}
 		}
 		Alert al = new Alert("查询结果",line.toString(),null,AlertType.CONFIRMATION);
 		al.setTimeout(Alert.FOREVER) ;
 		display.setCurrent(al) ;
	}
}