httpexample_1.java

《精通JAVA手机游戏与应用程序设计》随书光盘

import javax.microedition.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import java.io.*;

/*
 * 获得指定网页的数据
 */

public class HttpExample_1 extends MIDlet implements CommandListener {

	private Command exitCommand;

	private TextBox tb;

	String url = "http://127.0.0.1:8080/HelloWorld.html";

	public HttpExample_1() {
		exitCommand = new Command("Exit", Command.EXIT, 1);
		tb = new TextBox("StreamConnectiont例子", "", 200, 0);
		tb.addCommand(exitCommand);
		tb.setCommandListener(this);
	}

	protected void startApp() {
		try {
			StreamConnection c = null;
			InputStream s = null;
			StringBuffer b = new StringBuffer();
			try {
				//使用StreamConnection接口
				c = (StreamConnection) Connector.open(url);
				s = c.openInputStream();
				int ch;
				while ((ch = s.read()) != -1) {
					b.append((char) ch);
				}
				System.out.println(b.toString());

			} finally {
				if (s != null) {
					s.close();
				}
				if (c != null) {
					c.close();
				}
			}
			tb.setString(b.toString());
			Display.getDisplay(this).setCurrent(tb);

		} catch (Exception e) {
			System.out.println("error");
			e.printStackTrace();

		}

	}

	protected void pauseApp() {
	}

	protected void destroyApp(boolean d) {

	}

	public void commandAction(Command c, Displayable d) {
		if (c == exitCommand) {

			destroyApp(false);
			notifyDestroyed();
		}

	}

}