httpconnectiontest.java

J2ME开发实例,内含有可运行的实例代码!

//HttpConnectionTest.java 
import javax.microedition.midlet.*; 
import javax.microedition.lcdui.*; 
import javax.microedition.io.*; 
 
public class HttpConnectionTest extends MIDlet implements CommandListener 
{ 
	private Display display; 
	private Form form; 
	private Command exitCommand = new Command("Exit", Command.EXIT, 1); 
 
	public HttpConnectionTest()  
	{ 
		display = Display.getDisplay(this); 
	} 
 
	public void startApp()  
	{ 
		form = new Form("Get Http Connection"); 
		try 
		{ 
			HttpConnection conn=(HttpConnection) Connector.open 
				("http://localhost:80/postinfo.html"); 
			//conn.setRequestProperty("user","fancy"); 
			form.append("Date:"+conn.getDate()+"\n"); 
			form.append("Expiration:"+ 
				conn.getExpiration()+"\n"); 
			form.append(conn.getHost()+"\n"); 
			form.append("Last Modified:"+ 
				conn.getLastModified()+"\n"); 
			form.append("Port:"+conn.getPort()+"\n"); 
			form.append("Protocol:"+ 
				conn.getProtocol()+"\n"); 
			form.append("Request Method:"+ 
				conn.getRequestMethod()+"\n"); 
			form.append("Response Code:"+ 
				conn.getResponseCode()+"\n"); 
			form.append("Encoding:"+ 
				conn.getEncoding()+"\n"); 
			form.append("Length:"+conn.getLength()+"\n"); 
			form.append("Type:"+conn.getType()+"\n"); 
			form.append("URL:"+conn.getURL()+"\n"); 
			form.append("Response Message:"+ 
				conn.getResponseMessage()+"\n"); 
		} 
		catch(Exception fe) 
		{ 
			form.append("Error:"+fe.getMessage()); 
		} 
		form.addCommand(exitCommand); 
		form.setCommandListener(this); 
		display.setCurrent(form); 
	} 
 
	public void commandAction(Command c, Displayable s)  
	{ 
		if (c == exitCommand)  
		{ 
			destroyApp(false); 
			notifyDestroyed(); 
		}        
	} 
 
	public void destroyApp(boolean unconditional)  
	{ 
	} 
 
	public void pauseApp()  
	{ 
		display.setCurrent(null); 
		form = null; 
	} 
}