Android教程網
設為首頁|加入收藏
  1. 首頁
  2. Android 技術
  3. Android 手機
  4. Android 系統教程
  5. Android 游戲
 Android教程網 >> Android技術 >> 關於Android編程 >> Android二維碼掃描登陸網頁

Android二維碼掃描登陸網頁

編輯：關於Android編程

1二維碼掃描登陸

1，web端生成二維碼,傳遞uuid，並存入數據庫

2，web端輪訓查詢信息，是否有數據庫掃描二維碼信息

3，手機端掃描二維碼，獲取UUID，傳遞用戶名、密碼web端

4，web查詢數據庫中用戶信息（UserLogin），將登陸信息（用戶名，密碼）存入數據庫。

5，web輪訓查到用戶登陸信息，信息完整，則登陸成功。

1.1web端

1.1.1 導入依賴包（二維碼生成QRCode.jar）

jar包下載：QRCode.jar

\

 

1.1.2 用戶登陸信息實體類（UserLogin.java）

@Entity
@Table(name = "UserLogin")
public class UserLogin {
	@Id
	@GeneratedValue(generator = "UserLoginIdGenerator")
	@GenericGenerator(name = "UserLoginIdGenerator", strategy = "uuid")
	private String id;
	@Column
	private String name;
	@Column
	private String password;
	@Column
	private int uuid;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public int getUuid() {
		return uuid;
	}

	public void setUuid(int uuid) {
		this.uuid = uuid;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

}

 

1.1.3 生成二維碼(GetQrCodeServlet.java)

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.engine.transaction.jta.platform.internal.JOnASJtaPlatform;

import sun.org.mozilla.javascript.internal.json.JsonParser;

import com.alibaba.fastjson.JSONObject;
import com.jie.qrcode.util.HibernateUtil;
import com.jie.qrcode.util.QRCodeUtil;
import com.jie.qrcode.vo.UserLogin;

/**
 * @ClassName: GetQrCodeServlet.java
 * @Description: TODO(生成二維碼)
 * @author yangjie
 * @version V1.0
 * @Date 2016-5-16 上午11:05:27
 */
public class GetQrCodeServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		PrintWriter out = response.getWriter();

		// 生成唯一ID
		int uuid = (int) (Math.random() * 100000);
		// 二維碼內容
		// String content =
		// "http://192.168.0.199:8080/QrCodeLogin/PhoneLoginServlet?uuid="
		// + uuid;
		JSONObject obj = new JSONObject();
		obj.put("url",
				"http://192.168.0.199:8080/QrCodeLogin/PhoneLoginServlet");
		obj.put("uuid", uuid);
		String content = obj.toString();
		System.out.println("obj:" + content);
		// 生成二維碼
		String imgName = uuid + "_" + (int) (new Date().getTime() / 1000)
				+ ".png";
		String contextRoot = request.getContextPath();
		String webpath = request.getSession().getServletContext()
				.getRealPath("/");
		System.out.println(webpath);
		String imgPath = webpath + "/img/qrCodeImg/" + imgName;
		String logoPath = webpath + "/img/logo.png";
		QRCodeUtil handler = new QRCodeUtil();
		// handler.encoderQRCode(content, imgPath, "png");
		handler.encoderQRCode(content, imgPath, logoPath, "png");

		// uuid保存
		SessionFactory sf = HibernateUtil.getSessionFacotry();
		Session session = sf.openSession();
		session.beginTransaction();// 事務開始
		UserLogin userlogin = new UserLogin();
		userlogin.setUuid(uuid);
		session.save(userlogin);// 將uuid保存到數據庫
		session.getTransaction().commit();// 事務提交
		session.close();
		sf = null;

		// 生成的圖片訪問地址
		String qrCodeImg = "http://192.168.0.199:8080/QrCodeLogin/img/qrCodeImg/"
				+ imgName;
		String jsonStr = "{\"uuid\":" + uuid + ",\"qrCodeImg\":\"" + qrCodeImg
				+ "\"}";
		out.print(jsonStr);
		out.flush();
		out.close();
	}
}
 

1.1.4 用長連接，檢查登錄狀態(LongConnectionCheckServlet.java)

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Restrictions;

import com.jie.qrcode.util.HibernateUtil;
import com.jie.qrcode.vo.UserLogin;

/**
 * @ClassName:     LongConnectionCheckServlet.java
 * @Description:   TODO(用長連接，檢查登錄狀態) 
 * @author         yangjie
 * @version        V1.0  
 * @Date           2016-5-16 上午11:09:32
 */
public class LongConnectionCheckServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		int uuid = Integer.parseInt(request.getParameter("uuid"));
		String jsonStr = "";
		System.out.println("in");
		System.out.println("uuid:" + uuid);
		long inTime = new Date().getTime();
		Boolean bool = true;
		while (bool) {
			try {
				Thread.sleep(5000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			// 根據uuid查詢數據庫登錄表信息
			String username = "";
			SessionFactory sf = HibernateUtil.getSessionFacotry();
			Session session = sf.openSession();
			Criteria criteria = session.createCriteria(UserLogin.class);
			criteria.add(Restrictions.eq("uuid", uuid));
			List result = criteria.list();
			if (result.size() > 0) {
				for (UserLogin s : result) {
					username = s.getName();
					if(!"".equals(username)&&username!=null){//如果用戶名信息不為空，則登陸成功
						bool = false;
						session.clear();
						session.beginTransaction();
						session.delete(s);//刪除二維碼登錄信息，表明已登錄
						session.getTransaction().commit();
					}
					jsonStr = "{\"uname\":\"" + username + "\"}";
					System.out.println(username);
				}
			} else {
				if (new Date().getTime() - inTime > 5000) {
					bool = false;
				}
			}
			session.close();
			sf = null;

		}
		System.out.println("login ok : " + jsonStr);
		PrintWriter out = response.getWriter();
		out.print(jsonStr);
		out.flush();
		out.close();
	}
}

 

1.1.5 接收手機二維碼回傳信息(PhoneLoginServlet.java)

  
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Restrictions;

import com.jie.qrcode.util.HibernateUtil;
import com.jie.qrcode.vo.UserLogin;


/**
 * @ClassName:     PhoneLoginServlet.java
 * @Description:   TODO(手機二維碼登陸) 
 * @author         yangjie
 * @version        V1.0  
 * @Date           2016-5-16 上午11:20:16
 */
public class PhoneLoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	public PhoneLoginServlet() {
		super();
		// TODO Auto-generated constructor stub
	}

	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		int uuid = Integer.parseInt(request.getParameter("uuid"));
		String uname = request.getParameter("uname");
		String upwd = request.getParameter("upwd");
		System.out.println(uuid);
		System.out.println(uname);
		System.out.println(upwd);
		// 驗證登陸
		boolean bool = true;
		//是否登陸
		boolean islogin = false;
		if (bool) {
			// 將登陸信息存入數據庫
			SessionFactory sf = HibernateUtil.getSessionFacotry();
			Session session = sf.openSession();
			Criteria criteria = session.createCriteria(UserLogin.class);
			criteria.add(Restrictions.eq("uuid", uuid));
			List result = criteria.list();
			if (result.size() > 0) {
				for (UserLogin s : result) {
					s.setName(uname);
					s.setPassword(upwd);
					session.clear();
					session.beginTransaction();//開始事務
					session.saveOrUpdate(s);
					session.getTransaction().commit();// 事務提交
					bool = false;
					islogin = true;
				}
			}else{//沒有該uuid信息，表明已登錄，二維碼過期
				islogin = false;
				System.out.println("二維碼已過期，請刷新頁面");
			}
			session.close();
			sf = null;
		}
		PrintWriter out = response.getWriter();
		out.print(islogin);//傳遞登陸是否成功
		out.flush();
		out.close();
	}
}

 


1.1.6 二維碼掃描界面(index.html)





<script type="text/javascript" src="js/jquery-1.11.0.min.js"></script>

 掃描二維碼登陸





1.1.7 運行效果


\

\


 


1.2手機端


1.2.1 導入依賴工程BarCodeLibrary

工程下載：Android二維碼掃描
\

 


1.2.2 創建工程並引入依賴包

\

 


1.2.3 手機二維碼界面(activity_main.xml)





 

1.2.4 MainActivity.java



package com.jie.qrcode;


import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

import com.alibaba.fastjson.JSONObject;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.RequestParams;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest;
import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;
import com.zxing.activity.CaptureActivity;

public class MainActivity extends Activity implements OnClickListener{
	private Button btnScan;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		btnScan = (Button) findViewById(R.id.btn_scan);
		btnScan.setOnClickListener(this);
		
	}

	
	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		Intent intent = new Intent(this, CaptureActivity.class);
		startActivityForResult(intent, 0);
	}
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO Auto-generated method stub
		super.onActivityResult(requestCode, resultCode, data);
		if(resultCode==Activity.RESULT_OK){
			String result = data.getExtras().getString("result");//獲取掃描的結果
			//Log.i("result",result);
			JSONObject obj = JSONObject.parseObject(result);
			String uuid = obj.getString("uuid");
			String httpUrl = obj.getString("url");
			//Toast.makeText(getApplicationContext(), result, 1000).show();
			//將掃描內容提交到網頁
			HttpUtils http = new HttpUtils();
			RequestParams params = new RequestParams();
			params.addBodyParameter("uuid", uuid);
			//Log.i("uuid",uuid);
			params.addBodyParameter("uname", "yangjie");
			params.addBodyParameter("upwd", "123456");
			http.send(HttpMethod.POST, httpUrl, params , new RequestCallBack() {

				@Override
				public void onFailure(HttpException arg0, String arg1) {
					// TODO Auto-generated method stub
					Log.i("http.send","failuer");
					Toast.makeText(getApplicationContext(), "登陸失敗，二維碼過期，請刷新頁面！", 1000).show();
				}

				@Override
				public void onSuccess(ResponseInfo arg0) {
					// TODO Auto-generated method stub
					Log.i("http.send","success");
					Toast.makeText(getApplicationContext(), "登陸成功！", 1000).show();
				}
			});
		}
	}
}




 

1.2.5 運行效果

\\
\\


 


						
		
	
				

				
   

				

				

				
				
    
					
  1. 上一頁:
  2. 下一頁:
    3.  
				

				

				

					關於Android編程
				

				
			

			

				

					Android編程入門Android技術基礎Android資訊關於Android編程Android開發Android開發環境Android開發實例 
				

				

					

						相關文章
						

						

					

					
				

				

				
				

					熱門文章
				

				

					
					Android實現無標題欄全屏的方法
					
					Android與設計模式——狀態(State)模式
					
					Android存儲五大方式
					
					Android編程繪制圓形圖片的方法
					
					Android 基於AOP監控之——AspectJ使用指南
					
					安卓開發中遇到的奇奇怪怪的問題
					
				

				
				

					
					Android實現自制和播放錄音程序
					
首先，讓我們先看下實現的截圖：當有錄音文件存在時，會顯示在下面的List
						
				

				
				

					
					Android：使用canvas繪制餅狀統計圖（自動適應條目數量/大小）
					
本例的目的是實現一個簡單的餅狀統計圖，效果如下：
        
特點
						
				

				
				

					
					Android圖片處理內存優化系列之圖片牆案例
					
本篇文章的主要內容是說圖片的內存緩存和從網絡異步獲取圖片的過程工程效果圖
						
				

				
				

					
					Android仿QQ、新浪相冊的實現
					
在移動應用中，很多時候都會用到圖片選擇、圖片裁剪等功能。最近我也在准備一
						
				

				
				

					閱讀排行版
				

				
			

			

		
	
	

		

		Copyright © Android教程網 All Rights Reserved