J2ME登陆设计代码(Password MIDlet)
来源:技术人生 责任编辑:栏目编辑 发表时间:2013-07-01 22:58 点击:次
import Java.io.*;
import java.util.Random;
import javax.microedition.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.SHA1Digest;
public class PassWordMIDlet extends MIDlet implements CommandListener, Runnable {
private Display mDisplay;
private Form mForm;
private TextField mUserField, mPasswordField;
private Random mRandom;
public void startApp() {
mDisplay = Display.getDisplay(this);
mRandom = new Random(System.currentTimeMillis());
if (mForm == null) {
mForm = new Form("Login");
mUserField = new TextField("Name", "jonathan", 32, 0);
mPasswordField = new TextField("Password", "happy8", 32, 0);
mForm.append(mUserField);
mForm.append(mPasswordField);
mForm.addCommand(new Command("Exit", Command.EXIT, 0));
mForm.addCommand(new Command("Login", Command.SCREEN, 0));
mForm.setCommandListener(this);
}
mDisplay.setCurrent(mForm);
}
public void commandAction(Command c, Displayable s) {
if (c.getCommandType() == Command.EXIT) notifyDestroyed();
else {
Form waitForm = new Form("Connecting...");
mDisplay.setCurrent(waitForm);
Thread t = new Thread(this);
t.start();
}
}
public void run() {
// Gather the values we'll need.
long timestamp = System.currentTimeMillis();
long randomNumber = mRandom.nextLong();
String user = mUserField.getString();
byte[] userBytes = user.getBytes();
byte[] timestampBytes = getBytes(timestamp);
byte[] randomBytes = getBytes(randomNumber);
String password = mPasswordField.getString();
byte[] passwordBytes = password.getBytes();
// Create the message digest.
Digest digest = new SHA1Digest();
// Calculate the digest value.
digest.update(userBytes, 0, userBytes.length);
digest.update(timestampBytes, 0, timestampBytes.length);
digest.update(randomBytes, 0, randomBytes.length);
digest.update(passwordBytes, 0, passwordBytes.length);
byte[] digestValue = new byte[digest.getDigestSize()];
digest.doFinal(digestValue, 0);
// Create the GET URL. The hex encoded message digest value is
// included as a parameter.
URLBuilder ub = new URLBuilder(getAppProperty("PasswordMIDlet-URL"));
ub.addParameter("user", user);
ub.addParameter("timestamp",
new String(HexCodec.bytesToHex(timestampBytes)));
ub.addParameter("random",
new String(HexCodec.bytesToHex(randomBytes)));
ub.addParameter("digest",
new String(HexCodec.bytesToHex(digestValue)));
String url = ub.toString();
try {
// Query the server and retrieve the response.
HttpConnection hc = (HttpConnection)Connector.open(url);
InputStream in = hc.openInputStream();
int length = (int)hc.getLength();
byte[] raw = new byte[length];
in.read(raw);
String response = new String(raw);
Alert a = new Alert("Response", response, null, null);
a.setTimeout(Alert.FOREVER);
mDisplay.setCurrent(a, mForm);
in.close();
hc.close();
}
catch (IOException ioe) {
Alert a = new Alert("Exception", ioe.toString(), null, null);
a.setTimeout(Alert.FOREVER);
mDisplay.setCurrent(a, mForm);
}
}
private byte[] getBytes(long x) {
byte[] bytes = new byte[8];
for (int i = 0; i < 8; i++)
bytes[i] = (byte)(x >> ((7 - i) * 8));
return bytes;
}
import java.util.Random;
import javax.microedition.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.SHA1Digest;
public class PassWordMIDlet extends MIDlet implements CommandListener, Runnable {
private Display mDisplay;
private Form mForm;
private TextField mUserField, mPasswordField;
private Random mRandom;
public void startApp() {
mDisplay = Display.getDisplay(this);
mRandom = new Random(System.currentTimeMillis());
if (mForm == null) {
mForm = new Form("Login");
mUserField = new TextField("Name", "jonathan", 32, 0);
mPasswordField = new TextField("Password", "happy8", 32, 0);
mForm.append(mUserField);
mForm.append(mPasswordField);
mForm.addCommand(new Command("Exit", Command.EXIT, 0));
mForm.addCommand(new Command("Login", Command.SCREEN, 0));
mForm.setCommandListener(this);
}
mDisplay.setCurrent(mForm);
}
public void commandAction(Command c, Displayable s) {
if (c.getCommandType() == Command.EXIT) notifyDestroyed();
else {
Form waitForm = new Form("Connecting...");
mDisplay.setCurrent(waitForm);
Thread t = new Thread(this);
t.start();
}
}
public void run() {
// Gather the values we'll need.
long timestamp = System.currentTimeMillis();
long randomNumber = mRandom.nextLong();
String user = mUserField.getString();
byte[] userBytes = user.getBytes();
byte[] timestampBytes = getBytes(timestamp);
byte[] randomBytes = getBytes(randomNumber);
String password = mPasswordField.getString();
byte[] passwordBytes = password.getBytes();
// Create the message digest.
Digest digest = new SHA1Digest();
// Calculate the digest value.
digest.update(userBytes, 0, userBytes.length);
digest.update(timestampBytes, 0, timestampBytes.length);
digest.update(randomBytes, 0, randomBytes.length);
digest.update(passwordBytes, 0, passwordBytes.length);
byte[] digestValue = new byte[digest.getDigestSize()];
digest.doFinal(digestValue, 0);
// Create the GET URL. The hex encoded message digest value is
// included as a parameter.
URLBuilder ub = new URLBuilder(getAppProperty("PasswordMIDlet-URL"));
ub.addParameter("user", user);
ub.addParameter("timestamp",
new String(HexCodec.bytesToHex(timestampBytes)));
ub.addParameter("random",
new String(HexCodec.bytesToHex(randomBytes)));
ub.addParameter("digest",
new String(HexCodec.bytesToHex(digestValue)));
String url = ub.toString();
try {
// Query the server and retrieve the response.
HttpConnection hc = (HttpConnection)Connector.open(url);
InputStream in = hc.openInputStream();
int length = (int)hc.getLength();
byte[] raw = new byte[length];
in.read(raw);
String response = new String(raw);
Alert a = new Alert("Response", response, null, null);
a.setTimeout(Alert.FOREVER);
mDisplay.setCurrent(a, mForm);
in.close();
hc.close();
}
catch (IOException ioe) {
Alert a = new Alert("Exception", ioe.toString(), null, null);
a.setTimeout(Alert.FOREVER);
mDisplay.setCurrent(a, mForm);
}
}
private byte[] getBytes(long x) {
byte[] bytes = new byte[8];
for (int i = 0; i < 8; i++)
bytes[i] = (byte)(x >> ((7 - i) * 8));
return bytes;
}
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