java实现通过绑定邮箱找回密码功能

java实现通过绑定邮箱找回密码功能

本文实例为大家分享了java实现通过绑定邮箱找回密码功能，供大家参考，具体内容如下

1.输入用户名及验证码,验证用户名是否存在

(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 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 map=new HashMap();

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 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

/**

* @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:http:// 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

/**

* @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;

}

4.输入新密码，验证成功后即修改成功

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