JAVA實現通過繫結郵箱找回密碼功能
阿新 • • 發佈:2018-12-30
1.輸入使用者名稱及驗證碼,驗證使用者名稱是否存在
(1).生成驗證碼工具類
- 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(這裡用一句話描述這個類的作用)
- * @author Mr.chen
- * @date 2016-11-2 下午03:31:30
- */
- publicclass GraphicsUtil {
- private Font mFont = new Font("Times New Roman", Font.PLAIN, 17);
-
Color getRandColor(int
- 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
- }
- 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));
- //畫隨機線
- 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);
- }
- //從另一方向畫隨機線
- 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);
- }
- //生成隨機數,並將隨機數字轉換為字母
- 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).生成驗證碼action
- /**
- * @Description: 獲取驗證碼
- * @author Mr.chen
- * @date 2016-11-2 下午03:45:28
- */
- publicvoid 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);