Java tutorial
import java.io.DataInputStream; import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.HttpConnection; import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class HttpGETMIDlet extends MIDlet implements CommandListener { private Command exitCommand = new Command("Exit", Command.EXIT, 1); private Command sendCommand = new Command("Send", Command.OK, 1); private Command backCommand = new Command("Upload", Command.OK, 1); private Display display; private String defaultURL = "http://localhost/JIDCA/hello.asp?name=JIDCA"; private Form mainForm, resultForm; private TextField URL = new TextField(null, defaultURL, 250, TextField.URL); private StringItem resultItem; public HttpGETMIDlet() { display = Display.getDisplay(this); } public void startApp() { mainForm = new Form("Address"); mainForm.append(URL); mainForm.addCommand(sendCommand); mainForm.addCommand(exitCommand); mainForm.setCommandListener(this); display.setCurrent(mainForm); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void commandAction(Command c, Displayable s) { if (c == sendCommand) { String result = ""; resultItem = new StringItem(null, result); resultForm = new Form("Result"); String URLString = URL.getString(); try { result = requestUsingGET(URLString); } catch (IOException e) { result = "Falied"; } resultItem.setText(result); resultForm.append(resultItem); resultForm.addCommand(backCommand); resultForm.setCommandListener(this); display.setCurrent(resultForm); } else if (c == backCommand) { URL.setString(defaultURL); display.setCurrent(mainForm); } else { destroyApp(false); notifyDestroyed(); } } private String requestUsingGET(String URLString) throws IOException { HttpConnection hpc = null; DataInputStream dis = null; boolean newline = false; String content = ""; try { hpc = (HttpConnection) Connector.open(URLString); dis = new DataInputStream(hpc.openInputStream()); int character; while ((character = dis.read()) != -1) { if ((char) character == '\\') { newline = true; continue; } else { if ((char) character == 'n' && newline) { content += "\n"; newline = false; } else if (newline) { content += "\\" + (char) character; newline = false; } else { content += (char) character; newline = false; } } } if (hpc != null) hpc.close(); if (dis != null) dis.close(); } catch (IOException e2) { } return content; } }