midlet2.java

来自「这是郭克华老师的J2ME视频的源代码」· Java 代码 · 共 47 行

package prj21_1;

import java.io.DataInputStream;

import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
//得到服务器上的信息
public class MIDlet2 extends MIDlet {
	private Form frm = new Form("HTTP测试");
	private Display dis;
	protected void startApp() throws MIDletStateChangeException {
		dis = Display.getDisplay(this);
		dis.setCurrent(frm);
		try{
			//连接到HTTP服务器
			HttpConnection hc = 
				(HttpConnection)Connector.open("http://localhost:9999/index.jsp");			
			DataInputStream dis = hc.openDataInputStream();
			int length = (int)hc.getLength();
			byte[] b = new byte[length];
			dis.read(b);
			String str = new String(b);
			frm.append(str);
		}catch(Exception ex){
			ex.printStackTrace();
		}


	}

	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub

	}

	protected void pauseApp() {
		// TODO Auto-generated method stub

	}


}