package com.example.intracollegeapp;// package name
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.security.MessageDigest;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import LibPack.UserInfoLib;
import android.R.string;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import android.support.v4.app.NavUtils;
public class LoginForm extends Activity {
Button login;
TextView username;
TextView password;
UserInfoLib ui;
long msgLength;
long bitLength;
char msg[];
long requiredBits;
long requiredBytes;
int toPad[];
private static final String NAMESPACE = "link to server package on which webservices are stored";
private static final String URL = "link to wsdl file stored on server";
private static final String SOAP_ACTION = "IntraCollegeWS";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_form);
login=(Button)findViewById(R.id.butLogin);
username=(TextView)findViewById(R.id.editText1);
password=(TextView)findViewById(R.id.editText2);
login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
ui= new UserInfoLib();
ui.userId=username.getText().toString();
ui.password=getSHA1(password.getText().toString());
ui=(UserInfoLib)callService(objectToString(ui), "UserLogin", "userInfo");
//ui=(UserInfoLib)stringToObject(temp);
if(ui.firstName.equals("")){
Toast.makeText(v.getContext(), "Please Verify User Name Or Password", Toast.LENGTH_LONG).show();
finish();
}else{
Toast.makeText(v.getContext(), "Login Successfull", Toast.LENGTH_LONG).show();
System.out.println("NAME :"+ui.firstName);
Intent i = new Intent(v.getContext(), MainForm.class);
i.putExtra("uid", ui);
startActivity(i);
finish();
}
}
});
}
public long leftRotateBy(long l, int times) {
return ((l << times) & 0xFFFFFFFFl) | ((l & 0xFFFFFFFFl) >> (32 - times));
}
public int getByteAt(int at) {
if (at < msgLength) {
return (msg[at]);
} else {
at = at - (int) msgLength;
return toPad[at];
}
}
public void padBits(String pass) {
System.out.println("\n\n\n\n");
msg = pass.toCharArray();
msgLength = msg.length;
bitLength = msgLength * 8;
System.out.println("Msg Bit Length: " + bitLength);
System.out.println("MSg Byte Length: " + msgLength);
System.out.println("Required Minimum Bits: " + (bitLength + 65));
long remainder = (bitLength + 65) % 512;
System.out.println("Mod (Bits): " + remainder);
if (remainder == 0) {
requiredBits = 65;
System.out.println("No Padding Needed.");
} else {
requiredBits = (512 - remainder) + 65;
System.out.println(requiredBits + " Bits Padding Needed.");
}
requiredBytes = requiredBits / 8;
toPad = new int[(int) requiredBytes];
System.out.println("Required Bits: " + requiredBits);
System.out.println("Required Bytes: " + requiredBytes);
// manually append 1 to start of pad bits...
toPad[0] = 0x80;
for (int i = 1; i < requiredBytes - 8; i++) {
toPad[i] = 0;
}
long temp = bitLength;
for (int i = (int) (requiredBytes - 1); i >= (int) (requiredBytes - 8); i--) {
int t = (int) (temp & 0xff);
temp = temp >> 8;
toPad[i] = t;
}
System.out.println("TO PAD: ");
for (int i = 0; i < requiredBytes; i++) {
System.out.print(Integer.toHexString(toPad[i]) + " ");
}
System.out.println();
}
public String getSHA1(String pass) {
int kconst[] = new int[]{
0x5A827999,
0x6ED9EBA1,
0x8F1BBCDC,
0xCA62C1D6};
long h0 = 0x67452301;
long h1 = 0xEFCDAB89;
long h2 = 0x98BADCFE;
long h3 = 0x10325476;
long h4 = 0xC3D2E1F0;
long a, b, c, d, e;
padBits(pass);
long totalLength = msgLength + requiredBytes;
System.out.println("TOTAL LENGTH: " + totalLength);
System.out.println("BLOCKS: " + (totalLength / 8));
long w[] = new long[80];
for (int i = 0; i < (int) totalLength; i += 64) {
for (int j = i, kk = 0; j < (i + 64); j += 4, kk++) {
w[kk] = 0xffffffffl & ((getByteAt(j) << 24) | (getByteAt(j + 1) << 16) | (getByteAt(j + 2) << 8) | (getByteAt(j + 3)));
//System.out.println("W[" + kk + "]: " + Long.toHexString(w[kk]));
}
for (int kk = 16; kk < 80; kk++) {
w[kk] = (w[kk - 3] ^ w[kk - 8] ^ w[kk - 14] ^ w[kk - 16]);
w[kk] = leftRotateBy(w[kk], 1);
//System.out.println("W[" + kk + "]: " + Long.toHexString(w[kk]));
}
a = h0;
b = h1;
c = h2;
d = h3;
e = h4;
long temp = 0;
for (int t = 0; t < 20; t++) {
temp = leftRotateBy(a, 5) + ((b & c) | ((~b) & d)) + e + w[t] + kconst[0];
temp &= 0xFFFFFFFFl;
e = d;
d = c;
c = leftRotateBy(b, 30);
b = a;
a = temp;
}
for (int t = 20; t < 40; t++) {
temp = leftRotateBy(a, 5) + (b ^ c ^ d) + e + w[t] + kconst[1];
temp &= 0xFFFFFFFFl;
e = d;
d = c;
c = leftRotateBy(b, 30);
b = a;
a = temp;
}
for (int t = 40; t < 60; t++) {
temp = leftRotateBy(a, 5) + ((b & c) | (b & d) | (c & d)) + e + w[t] + kconst[2];
temp &= 0xFFFFFFFFl;
e = d;
d = c;
c = leftRotateBy(b, 30);
b = a;
a = temp;
}
for (int t = 60; t < 80; t++) {
temp = leftRotateBy(a, 5) + (b ^ c ^ d) + e + w[t] + kconst[3];
temp &= 0xFFFFFFFFl;
e = d;
d = c;
c = leftRotateBy(b, 30);
b = a;
a = temp;
}
h0 = (h0 + a) & 0xFFFFFFFFl;
h1 = (h1 + b) & 0xFFFFFFFFl;
h2 = (h2 + c) & 0xFFFFFFFFl;
h3 = (h3 + d) & 0xFFFFFFFFl;
h4 = (h4 + e) & 0xFFFFFFFFl;
}
return Long.toHexString(h0) + Long.toHexString(h1) + Long.toHexString(h2) + Long.toHexString(h3) + Long.toHexString(h4);
}
Object callService(String INPUT_DATA, String METHOD_NAME, String PARAMETER_NAME){
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
PropertyInfo pi = new PropertyInfo();
pi.setName(PARAMETER_NAME);
pi.setValue(INPUT_DATA);
pi.setType(String.class);
request.addProperty(pi);
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
try {
androidHttpTransport.call(SOAP_ACTION, envelope);
SoapObject resultsRequestSOAP = (SoapObject)envelope.bodyIn;
String resp = resultsRequestSOAP.getPrimitivePropertyAsString("return");
return stringToObject(resp);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
Object stringToObject(String inp){
byte b[] = Base64.decode(inp);
Object ret = null;
try {
ByteArrayInputStream bis = new ByteArrayInputStream(b);
ObjectInput in = new ObjectInputStream(bis);
ret = (Object) in.readObject();
bis.close();
in.close();
} catch(Exception e) {
System.out.println("NOT DE-SERIALIZABLE: " + e);
}
return ret;
}
String objectToString(Object obj){
byte[] b = null;
try {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(bos);
out.writeObject(obj);
b = bos.toByteArray();
} catch(Exception e) {
System.out.println("NOT SERIALIZABLE: " + e);
}
return Base64.encode(b);
}
}
/ *我开发了一个android应用程序，它连接到服务器以进行登录。对于连接，我使用了ksoap2库。 Intracollege webservice存储在服务器上。使用wifi连接到服务器时，应用程序正常工作。如果它没有连接到wifi，它会显示消息“应用程序崩溃”，然后应用程序停止工作。 如果没有使用wifi连接到服务器，我只想显示一条简单的消息“应用程序未连接到服务器”。* /
答案 0 :(得分：0)
试试这个........
public boolean isNet()
{
boolean status=false;
String line;
try
{
URL url = new URL("http://www.google.com");
BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
while(( line = reader.readLine()) != null)
{
}
status=true;
}
catch (IOException ex)
{
System.out.println("ex in isNet : "+ex.toString());
if(ex.toString().equals("java.net.UnknownHostException: www.google.com"))
status=false;
}
catch(Exception e)
{
}
return status;
}
if(status==true)
{
//Do your operation
}
else
show("No Internet Connection.");
当状态为true时，请执行登录过程。否则显示消息“应用程序未连接到服务器”。
答案 1 :(得分：0)
要检查互联网连接，请尝试使用
private boolean haveNetworkConnection() {
boolean haveConnectedWifi = false;
boolean haveConnectedMobile = false;
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] netInfo = cm.getAllNetworkInfo();
for (NetworkInfo ni : netInfo) {
if (ni.getTypeName().equalsIgnoreCase("WIFI"))
if (ni.isConnected())
haveConnectedWifi = true;
if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
if (ni.isConnected())
haveConnectedMobile = true;
}
return haveConnectedWifi || haveConnectedMobile;
}
答案 2 :(得分：0)
检查此代码，这将对您有所帮助：
在要检查网络可用性的类中初始化。
OtherUtils otherUtils = new OtherUtils();
if (!otherUtils.isNetworkAvailable(getApplicationContext())) {
Toast.makeText(getApplicationContext(), "No Network Available", Toast.LENGTH_LONG).show();
return;
}
添加以下课程：
public class OtherUtils{
Context context;
public boolean isNetworkAvailable(Context context) {
this.context = context;
ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
// boitealerte(this.getString(R.string.alertNoNetwork),"getSystemService rend null");
} else {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
}
return false;
}
}
这肯定会帮到你。