JAVA实现通过绑定邮箱找回密码功能

太过爱你忘了你带给我的痛 2022-07-15 05:15 260阅读 0赞

1.输入用户名及验证码,验证用户名是否存在

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(1).生成验证码工具类

package com.utils;
    
    import java.awt.Color;
    import java.awt.Font;
    import java.awt.Graphics;
    import java.awt.image.BufferedImage;
    import java.util.HashMap;
    import java.util.Map;
    import java.util.Random;
    
    /**  
     * @Title: GraphicsUtil.java
     * @copyright 
     * @Package com.utils
     * @Description: TODO(这里用一句话描述这个类的作用)
     * @author Mr.chen
     * @date 2016-11-2 下午03:31:30
     */
    public class GraphicsUtil {
        
        private Font mFont = new Font("Times New Roman", Font.PLAIN, 17); 
        
        Color getRandColor(int fc,int bc){
            Random random = new Random();     
            if(fc>255) fc=255;     
            if(bc>255) bc=255;     
            int r=fc+random.nextInt(bc-fc);     
            int g=fc+random.nextInt(bc-fc);     
            int b=fc+random.nextInt(bc-fc);     
            return new Color(r,g,b);
        }
         
        public Map<String, Object> getGraphics(){
             
            int width=100,height=18;
            BufferedImage image=new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
            Graphics g=image.getGraphics();
            Random random = new Random();     
            g.setColor(getRandColor(200,250));     
            g.fillRect(1, 1, width-1, height-1);     
            g.setColor(new Color(102,102,102));     
            g.drawRect(0, 0, width-1, height-1);     
            g.setFont(mFont);     
            g.setColor(getRandColor(160,200));     
            //画随机线     
            for (int i=0;i<155;i++){     
                int x = random.nextInt(width - 1);     
                int y = random.nextInt(height - 1);     
                int xl = random.nextInt(6) + 1;     
                int yl = random.nextInt(12) + 1;     
                g.drawLine(x,y,x + xl,y + yl);     
            }     
            
            //从另一方向画随机线     
            for (int i = 0;i < 70;i++){     
                int x = random.nextInt(width - 1);     
                int y = random.nextInt(height - 1);     
                int xl = random.nextInt(12) + 1;     
                int yl = random.nextInt(6) + 1;     
                g.drawLine(x,y,x - xl,y - yl);     
            }     
            
            //生成随机数,并将随机数字转换为字母     
            String sRand="";     
            for (int i=0;i<6;i++){     
                int itmp = random.nextInt(26) + 65;     
                char ctmp = (char)itmp;     
                sRand += String.valueOf(ctmp);     
                g.setColor(new Color(20+random.nextInt(110),20+random.nextInt(110),20+random.nextInt(110)));     
                g.drawString(String.valueOf(ctmp),15*i+10,16);     
            }     
            
            g.dispose();
                
            Map<String, Object> map=new HashMap<String, Object>();
            map.put("rand", sRand);
            map.put("image", image);
            return map;
         }
    
    }

(2).生成验证码action

/**
    	* @Description: 获取验证码 
    	* @author Mr.chen
    	* @date 2016-11-2 下午03:45:28
    	 */
    	public void getCode(){
    		try {
    			HttpServletResponse response = ServletActionContext.getResponse();
    			
    			HttpServletRequest request= ServletActionContext.getRequest();
    			
    			response.setHeader("Pragma","No-cache");     
    			response.setHeader("Cache-Control","no-cache");     
    			response.setDateHeader("Expires", 0);     
    			//表明生成的响应是图片     
    			response.setContentType("image/jpeg");
    			
    			Map<String, Object> map=new GraphicsUtil().getGraphics();
    			System.out.println(map.get("rand"));
    			request.getSession().setAttribute("rand", map.get("rand"));
    			ImageIO.write((RenderedImage) map.get("image"), "JPEG", response.getOutputStream());
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    	}

(3).验证用户名是否存在

/**
    	* @Description: 检查用户名是否存在
    	* @author Mr.chen
    	* @date 2016-11-2 下午04:49:02
    	 */
    	public void checkUsernumber(){
    		try {
    			HttpServletResponse response = ServletActionContext.getResponse();
    			
    			HttpServletRequest request= ServletActionContext.getRequest();
    			String usernumber = request.getParameter("usernumber");
    			Studentinfo stu= studentinfoService.getStudentinfoByUsernumber(usernumber);
    			response.setContentType("text/plain; charset=utf-8");
    			response.setCharacterEncoding("UTF-8");
    			if(stu==null){
    				response.getWriter().print("false");
    				
    			}else{
    				if(!StringUtils.isBlank(stu.getEmail())){
    					response.getWriter().print("true");
    				}else{
    					response.getWriter().print("notEmail");
    				}
    				
    			}
    			response.getWriter().flush();
    			response.getWriter().close();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    	}

2.用户名验证通过后往绑定邮箱发送邮件

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/**
    	* @Description: 发送邮件
    	* @author Mr.chen
    	* @date 2016-11-2 下午05:06:24
    	 */
    	@SuppressWarnings("static-access")
    	public String toFindPassword2(){
    		HttpServletRequest request= ServletActionContext.getRequest();
    		String usernumber = request.getParameter("usernumber");
    		Studentinfo stu= studentinfoService.getStudentinfoByUsernumber(usernumber);
    		try {
    			Properties prop = new Properties();
    			prop.setProperty("mail.transport.protocol", "smtp");
    			prop.setProperty("mail.smtp.host", "smtp.qq.com");
    			prop.setProperty("mail.smtp.auth", "true");
    			prop.put("mail.smtp.port","587");
    			prop.setProperty("mail.debug", "true");
    			//验证写信者邮箱,此处使用第三方授权码登陆,使用密码不知道为什么登录不上
    			Authenticator authenticator = new PopAuthenticator("123456789@qq.com", "**************");
    			//创建会话
    			Session session = Session.getInstance(prop,authenticator);
    			//填写信封写信
    			Message msg = new MimeMessage(session);
    			//设置发邮件的原地址
    			msg.setFrom(new InternetAddress("123456789@qq.com"));
    			//设置接收人
    			msg.setRecipient(RecipientType.TO, new InternetAddress(stu.getEmail()));
    			msg.setSubject("找回密码!");
    			msg.setText(this.createLink(stu));
    			//验证用户名密码发送邮件
    			Transport transport = session.getTransport();
    			transport.send(msg);
    			request.setAttribute("stu", stu);   
    			return SUCCESS;
                
            }catch(Exception e){
            	e.printStackTrace();
            }
               return ERROR;
    	}

/**
    	* @Description: 生成邮箱链接地址
    	* @author Mr.chen
    	* @date 2016-11-3 下午01:50:14
    	 */
    	public String createLink(Studentinfo stu){
    		
    		//生成密钥
    		String secretKey=UUID.randomUUID().toString();
    		//设置过期时间
    		Date outDate = new Date(System.currentTimeMillis() + 30 * 60 * 1000);// 30分钟后过期
    		System.out.println(System.currentTimeMillis());
    		long date = outDate.getTime() / 1000 * 1000;// 忽略毫秒数  mySql 取出时间是忽略毫秒数的
    		
    		//此处应该更新Studentinfo表中的过期时间、密钥信息
    		stu.setOutDate(date);
    		stu.setValidataCode(secretKey);
    		studentinfoService.updateStudentinfo(stu);
    		//将用户名、过期时间、密钥生成链接密钥
    		String key =stu.getUsernumber() + "$" + date + "$" + secretKey;
    		
    		String digitalSignature = MD5Util.getMd5(key);// 数字签名
    		
    		HttpServletRequest request= ServletActionContext.getRequest();
    		
    		String path=request.getContextPath();
    		
    		String basePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path;
    		
    		String resetPassHref = basePath + "/toFindPassword3.action?sid="+ digitalSignature +"&id="+stu.getId();
    		
    		String emailContent = "请勿回复本邮件.点击下面的链接,重设密码,本邮件超过30分钟,链接将会失效，需要重新申请找回密码." + resetPassHref;
    		
    		return emailContent;
    	}

3.邮件发送成功后进入邮箱,通过该链接进入修改密码请求，链接验证通过后进入修改密码页面

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/**
    	* @Description: 该方法用于处理从邮箱链接过来的修改密码请求
    	* @author Mr.chen
    	* @date 2016-11-3 下午02:24:17
    	 */
    	public String toFindPassword3(){
    		String message="";
    		HttpServletRequest request= ServletActionContext.getRequest();
    		//获取链接中的加密字符串
    		String sid=request.getParameter("sid");
    		//获取链接中的用户名
    		String id=request.getParameter("id");
    		if(StringUtils.isBlank(sid)||StringUtils.isBlank(id)){
    			System.out.println("请求的链接不正确,请重新操作.");
    			message="请求的链接不正确,请重新操作.";
    		}
    		Studentinfo stu=studentinfoService.getStudentinfoById(Long.parseLong(id));
    		
    		if(stu!=null){
    			//获取当前用户申请找回密码的过期时间
    			//找回密码链接已经过期
    			if(stu.getOutDate()<=System.currentTimeMillis()){
    				System.out.println("链接已经过期");
    				message="链接已经过期";
    			}
    			//获取当前登陆人的加密码
    			String key = stu.getUsernumber()+"$"+stu.getOutDate()/1000*1000+"$"+stu.getValidataCode();//数字签名
    			
    			String digitalSignature = MD5Util.getMd5(key);// 数字签名
    			
    			if(!digitalSignature.equals(sid)){
    				System.out.println("链接加密密码不正确");
    				message="链接加密密码不正确";
    			}else{
    				//验证成功,跳入到修改密码界面
    				request.setAttribute("stu", stu);
    			}
    			
    		}else{
    			System.out.println("用户信息不存在");
    			message="用户信息不存在";
    			request.setAttribute("message", message);
    		}
    		return SUCCESS;
    	}

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4.输入新密码，验证成功后即修改成功

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