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import java.io.DataInputStream;
import java.io.DataOutputStream;
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 HttpHEADMIDlet 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/";
private Form mainForm, resultForm;
private TextField URL= new TextField(null, defaultURL, 250, TextField.URL);
private StringItem resultItem;
public HttpHEADMIDlet() {
display = Display.getDisplay(this);
}
public void startApp() {
mainForm = new Form("HEDA Method");
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;
String content = "";
try {
hpc = (HttpConnection) Connector.open(URLString);
hpc.setRequestMethod(HttpConnection.HEAD);
dis = new DataInputStream(hpc.openInputStream());
int i = 1;
String key = "";
String value = "";
while ((value = hpc.getHeaderField(i)) != null) {
key = hpc.getHeaderFieldKey(i++);
content += key + ":" + value + "\n";
}
if (hpc != null)
hpc.close();
if (dis != null)
dis.close();
} catch (IOException e2) {
}
return content;
}
}
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