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5年以前 | 阅读数：246 次 | 编程语言：PHP

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1.PHPÍøÒ³Éu³É¶þÎ¬Âe£¬ÏaÓ¦Ëae»uÊý´ae´¢µ½Êý¾Ý¿aÖÐ£»
2.Android¿Í»§¶ËÉ¨Âe£¬Ð¯´øusername±£´aeÖÁËae»uÊý¶ÔÓ¦µÄÎ»ÖÃ£»
3.Ã¿¸oÒ»¶ÎÊ±¼a£¬PHPÍ¨¹ýAjaxÂÖÑ¯Êý¾Ý¿a£¬ÅÐ¶ÏÊÇ*ñÎª¿Õ£¬²»Îª¿ÕÔoÌø×ªÍøÒ³¡£

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1. Í¨¹ýËae»uÊýÉu³É¶þÎ¬ÂeÍ¼Æ¬£¬²¢Ö´ÐÐÂÖÑ¯²Ù×÷ÃuÁiµÄÖ÷Ò³Ãae


    <html>
     <head>
      <title>qrlogin</title>
      <meta charset="UTF-8"/>
     </head>
     <body>
      <?php
      /**
       * @author Cenquanyu
       * @version 2016Äe5ÔÂ12ÈÕ
       *
       */
        require 'mysql_connect.php';
        $randnumber = "";
        for($i=0;$i<8;$i++){
        $randnumber.=rand(0,9);
        }
        //½«Éu³ÉµÄËae»uÊý±£´aeÖÁÊý¾Ý¿a
        mysql_query("insert into login_data (randnumber) values ('$randnumber')")

      ?>

      <img src="http://qr.liantu.com/api.php?text=<?php echo $randnumber;?>" width="300px"/>
      <input hidden="hidden" type="text" name="randnumber" id="randnumber"value="<?php echo $randnumber;?>"/>

     </body>
     <script>
      xmlHttpRequest.onreadystatechange = function(){
        if(xmlHttpRequest.status == 200 && xmlHttpRequest.readyState ==4){
      result = xmlHttp.responseText;
      if(result==true){//username²»Îª¿ÕÔoÌø×ªÒ³Ãae
         window.location.href='welcome.php';
      }
    }
    }
     }
     function polling(){

       //Ö´ÐÐÂÖÑ¯²Ù×÷
       var xmlHttpRequest;
       if(window.XMLHttpRequest){
         xmlHttpRequest = new XMLHttpRequest();
         }
       else{
         xmlHttpRequest = new ActiveXObject("Microsoft.XMLHTTP");
       }
        randnumber = document.getElementById('randnumber').value;
        xmlHttpRequest.open("GET","polling.php?randnumber="+ randnumber,true);
        xmlHttpRequest.send();
     }
        setInterval("polling()",1000);
    </script>

    </html>

2. Êý¾Ý¿aÁ¬½ÓÒ³Ãae


    <?php
    /**
     * Êý¾Ý¿aÁ¬½ÓÎÄ¼þ
     * @author Cenquanyu
     * @version 2016Äe5ÔÂ12ÈÕ
     * 
     */
    $con = mysql_connect("localhost","root","") or die(mysql_error());
    mysql_select_db("qr_login");

    ?>

3.Ö´ÐÐÂÖÑ¯²Ù×÷µÄÒ³Ãae£¬username²»Îª¿ÕÔoÌø×ª


    <?php
    /**
     * @author Cenquanyu
     * @version 2016Äe5ÔÂ12ÈÕ
     * Ö´ÐÐÂÖÑ¯²Ù×÷£¬²eÑ¯Ëae»uÊýÔÚÊý¾Ý¿aÖÐµÄÏaÓ¦Î»ÖÃµÄusername×Ö¶ÎÎª²»Îª¿Õ
     * Îª¿Õ£¬Ôo*µ»Øfalse,Ò³Ãae²»Ìø×ª
     * ²»Îª¿Õ£¬ÔoËµÃ÷ÓÐÓÃ»§½øÐÐÁË¸Ã¶þÎ¬ÂeµÄÉ¨ÂeµÇÂ¼£¬Ò³Ãae½øÐÐÌø×ª
     */
    require 'mysql_connect.php';
    $randnumber = $_GET['randnumber'];
    $result = mysql_query("select * from login_data where randnumber='$randnumber'");
    $row = mysql_fetch_array($result);
    if($row['username']!="")
      echo "true";
    else
      echo "false";
    ?>

4.×Ô¶¨ÒaµÄAPI£¬¶Ô¿Í»§¶ËµÄusername½øÐÐ±£´ae


    <?php
    /**
     * @author Cenquanyu
     * @version 2016Äe5ÔÂ12ÈÕ
     * ×Ô¶¨ÒaAPIÓÃÓÚAndroid¿Í»§¶ËÉ¨ÂeµÇÂ¼£¬½«¿Í»§¶ËµÄusername±£´aeÖÁ¶þÎ¬Âe¶ÔÓ¦µÄËae»uÊýÔÚÊý¾Ý¿aÖÐµÄÏaÓ¦Î»ÖÃ¡£
     * ²ÎÊý£ºusername£¬randnumber
     * ÎÞ*µ»ØÖµ
     */
    $randnumber = $_GET('randnumber');
    $username = $_GET('username');

    require 'mysql_connect.php';
    mysql_query("update qr_login set username='$username' where randnumber= '$randnumber'");


    ?>

5. Android¿Í»§¶ËÖ´ÐÐÉ¨Âe²Ù×÷µÄActivity


    package com.Cenquanyu.qrlogin;

    import com.Cenquanyu.qrlogin.R;
    import com.zxing.activity.CaptureActivity;

    import android.app.Activity;
    import android.content.Intent;
    import android.graphics.Paint.Cap;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.Toast;
    /**
     * @author Cenquanyu
     * @version 2016Äe5ÔÂ12ÈÕ
     * 
     */
    public class MainActivity extends Activity implements OnClickListener {

      private Button btnScan;
      private EditText etUsername;


      private static final String WEB_URL = "http://172.31.19.202/QRLogin/";//¸Ä³ÉPC¶ËÏaÓ¦µØÖ*

      @Override
      protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnScan = (Button) findViewById(R.id.btnScan);
        btnScan.setOnClickListener(this);
        etUsername = (EditText) findViewById(R.id.etUsername);
      }

      @Override
      public void onClick(View v) {
        // É¨Âe²Ù×÷
        Intent intent = new Intent(this, CaptureActivity.class);
        startActivityForResult(intent, 0);//*µ»Ø½a¹u
      }

      @Override
      protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == Activity.RESULT_OK) {
          String randnumber = data.getExtras().getString("result");//¿Í»§¶ËÉ¨Âeºo*µ»ØÉ¨Ãe½a¹u£¬½«¶þÎ¬Âe¶ÔÓ¦µÄËae»uÊýÈ¡³o
          String username = etUsername.getText().toString();
          String url = WEB_URL + "saveUsername.php?randnumber=" + randnumber
              + "&username;=" + username;
          HttpUtils.login(url);//*ÃÎÊurl
        }
      }

    }

6. ÍøÂçÇeÇoÀa


    package com.Cenquanyu.qrlogin;

    import java.io.IOException;
    import java.net.HttpURLConnection;
    import java.net.MalformedURLException;
    import java.net.URL;

    public class HttpUtils{
      public static void login(final String url){
        new Thread(new Runnable() {
          @Override
          public void run() {
            HttpURLConnection connection;
            try {
              connection = (HttpURLConnection) new URL(url).openConnection();
              connection.setRequestMethod("GET");
              connection.getInputStream();
            } catch (Exception e) {
              e.printStackTrace();
            }
          }
        }).start();
      }
    }

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