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<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

/**
 * @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("[e-mail]", "**************");
 //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("[e-mail]"));
 //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

/**
 * @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

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。