- <html>
- <head>
- <title>qrlogin</title>
- <meta charset="UTF-8"/>
- </head>
- <body>
- <?php
- /**
- * @author Cenquanyu
- * @version 2016年5月12日
- *
- */
- require 'mysql_connect.php';
- $randnumber = "";
- for($i=0;$i<8;$i++){
- $randnumber.=rand(0,9);
- }
- //将生成的随机数保存至数据库
- mysql_query("insert into login_data (randnumber) values ('$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){//username不为空则跳转页面
- window.location.href='welcome.php';
- }
- }
- }
- }
- function polling(){
- //执行轮询操作
- 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>
- <?php
- /**
- * 数据库连接文件
- * @author Cenquanyu
- * @version 2016年5月12日
- *
- */
- $con = mysql_connect("localhost","root","") or die(mysql_error());
- mysql_select_db("qr_login");
- ?>
- <?php
- /**
- * @author Cenquanyu
- * @version 2016年5月12日
- * 执行轮询操作,查询随机数在数据库中的相应位置的username字段为不为空
- * 为空,则返回false,页面不跳转
- * 不为空,则说明有用户进行了该二维码的扫码登录,页面进行跳转
- */
- 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";
- ?>
- <?php
- /**
- * @author Cenquanyu
- * @version 2016年5月12日
- * 自定义API用于Android客户端扫码登录,将客户端的username保存至二维码对应的随机数在数据库中的相应位置。
- * 参数:username,randnumber
- * 无返回值
- */
- $randnumber = $_GET('randnumber');
- $username = $_GET('username');
- require 'mysql_connect.php';
- mysql_query("update qr_login set username='$username' where randnumber= '$randnumber'");
- ?>
- 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 2016年5月12日
- *
- */
- 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/";//改成PC端相应地址
- @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) {
- // 扫码操作
- Intent intent = new Intent(this, CaptureActivity.class);
- startActivityForResult(intent, 0);//返回结果
- }
- @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");//客户端扫码后返回扫描结果,将二维码对应的随机数取出
- String username = etUsername.getText().toString();
- String url = WEB_URL + "saveUsername.php?randnumber=" + randnumber
- + "&username=" + username;
- HttpUtils.login(url);//访问url
- }
- }
- }
- 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();
- }
- }
来源: http://www.phpxs.com/code/1009940/