0 
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。校内网络服务存储在服务器上。该应用程序在使用 wifi 连接到服务器时工作正常。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。如果未使用 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”。*/

4

3 回答 3

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;
        }

添加以下类：

    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;
            }
    }

这肯定会帮助你。

于 2013-03-28T06:33:08.727 回答
0

尝试这个........

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.");

当状态为真时，您的登录过程。否则显示消息“应用程序未连接到服务器”。

于 2013-03-28T06:22:57.527 回答
0

要检查互联网连接，试试这个


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;
}
于 2013-03-28T06:24:09.287 回答