实现图片滑动验证码js插件+后台（完整版）
之前一直比较忙，最近也看到之前发的很多人问，现在我就提取出来发个简化完整版的。
我后端采用python+flask+redis，简易实现图片验证功能，如需复杂验证，请记录鼠标拖动轨迹，后端实现分析，具体有兴趣的朋友可以试试。
js插件重要代码
/**
* Created by lgy on 2017/10/21.
* 图片验证码
*/
(function ($) {
$.fn.imgcode = function (options) {
//初始化参数
var defaults = {
frontimg:"",
backimg:"",
refreshImg:"",
getsuccess:"",
getfail:"",
maskclose:true,
callback:"", //回调函数
refreshcallback:""
};
var opts = $.extend(defaults, options);
return this.each(function () {
var $this = $(this);//获取当前对象
var html = '' +
'' +
'' +
'' +
'' +
'
' +
'
' +
'刷新' +
'' +
'' +
'' +
'按住滑块，拖动完成上方拼图' +
'';
$this.html(html);
//定义拖动参数
var $divMove = $(this).find(".code-btn-img"); //拖动按钮
var $divWrap = $(this).find(".code-btn");//鼠标可拖拽区域
var mX = 0, mY = 0;//定义鼠标X轴Y轴
var dX = 0, dY = 0;//定义滑动区域左、上位置
var isDown = false;//mousedown标记
if(document.attachEvent) {//ie的事件监听，拖拽div时禁止选中内容，firefox与chrome已在css中设置过-moz-user-select: none; -webkit-user-select: none;
$divMove[0].attachEvent('onselectstart', function() {
return false;
});
}
//按钮拖动事件
$divMove.unbind('mousedown').on({
mousedown: function (e) {
//清除提示信息
$this.find(".code-tip").html("");
var event = e || window.event;
mX = event.pageX;
dX = $divWrap.offset().left;
dY = $divWrap.offset().top;
isDown = true;//鼠标拖拽启
$(this).addClass("active");
//修改按钮阴影
$divMove.css({"box-shadow":"0 0 8px #666"});
}
});
//点击背景关闭
if(opts.maskclose){
$this.find(".code_bg").unbind('click').click(function(){
$this.html("");
})
}
//刷新code码
$this.find(".icon-push").unbind('click').click(function(){
opts.refreshcallback();
});
//鼠标点击松手事件
$divMove.unbind('mouseup').mouseup(function (e) {
var lastX = $this.find(".code-mask").offset().left - dX - 1;
isDown = false;//鼠标拖拽启
$divMove.removeClass("active");
//还原按钮阴影
$divMove.css({"box-shadow":"0 0 3px #ccc"});
returncode(lastX);
});
//滑动事件
$divWrap.mousemove(function (event) {
var event = event || window.event;
var x = event.pageX;//鼠标滑动时的X轴
if (isDown) {
if(x>(dX+30) && x
python实现接口重要代码
rHost='127.0.0.1', rPort=6379, rDb=1, rPasswd='123456' 这里是配置redis的地方。
#!/usr/bin/env python
# -*- coding:utf-8 -*-
from PIL import Image, ImageFilter
import random
import glob
# from matplotlib.pyplot import imsave
import base64
from io import BytesIO
import redis,os
backgroundPaton = os.getcwd()+"/app/codeimg/*.[pP][nN][gG]"
maskPaton = os.getcwd()+"/app/codeimgMask/*[0-9]-[bB].[pP][nN][gG]"
yMargin = 2
kSuffix = "_captchaCode"
class captcha:
def __init__(self, rHost='127.0.0.1', rPort=6379, rDb=1, rPasswd='123456'):
self.host = rHost
self.port = rPort
self.db = rDb
self.passwd = rPasswd
# self.r = rds
def getRedis(self):
pool = redis.ConnectionPool(host=self.host, port=self.port, db=self.db, password=self.passwd)
return redis.StrictRedis(connection_pool=pool)
# return redis.Redis(host=self.host, port=self.port,db=self.db,password=self.passwd)
def getCode(self, did):
if (len(did) < 32):
return 0, 0
bImgFile = random.choice(glob.glob(backgroundPaton)) # 随机取底图文件
bBorderFile = random.choice(glob.glob(maskPaton)) # 随机取底图蒙层文件
# print(bBorderFile)
fBorderPaton = bBorderFile[:(len(bBorderFile) - 5)] + "[wW].[pP][nN][gG]" #
fBorderFile = random.choice(glob.glob(fBorderPaton)) # 上层图蒙层文件
# print(fBorderFile)
bImg = Image.open(bImgFile) # 底图
bBorder = Image.open(bBorderFile) # 底图蒙层
fBorder = Image.open(fBorderFile) # 上层图蒙层
xPos = random.randint(bBorder.size[0], bImg.size[0] - bBorder.size[0]) # 取图x坐标
yPos = random.randint(yMargin, bImg.size[1] - bBorder.size[1] - yMargin) # 取图y坐标
pos = (xPos, yPos)
reg = pos + (xPos + bBorder.size[0], yPos + bBorder.size[1]) # 取图矩形区域
cImg = bImg.crop(reg) # 底图中取矩形图
bMask = fBorder.convert('RGBA') # 蒙层边界
fChip = Image.composite(cImg, bMask, mask=fBorder) # 取出图片合成外层边框
fImg = Image.new("RGBA", bImg.size)
fImg.paste(fChip, (0, yPos))
#fImg.save("front.png")
fImgBuf = BytesIO()
fImg.save(fImgBuf, format="png")
bMask = bBorder.convert('RGBA') # 蒙层边界
bImg.paste(bBorder, pos, mask=bMask) # 叠加蒙层
#bImg.save("back.png")
bImgBuf = BytesIO()
bImg.save(bImgBuf, format="png")
rds = self.getRedis()
rds.set(did + kSuffix, xPos, ex=60)
self.fImgStream = 'data:image/png;base64,'+base64.b64encode(fImgBuf.getbuffer()).decode()
self.bImgStream = 'data:image/png;base64,'+base64.b64encode(bImgBuf.getbuffer()).decode()
# return self.fImgStream,self.bImgStream
return {"code":200,"frontImg": self.fImgStream, "backGoundImg": self.bImgStream}
#获取通过码状态
def getCodeState(self,did):
rdsKeyResult = did + "_captchaResult"
rds = self.getRedis()
xValue=False
try:
xValue = rds.get(rdsKeyResult)
xValue=bool(xValue)
rds.delete(rdsKeyResult)
except:
print("获取失败")
return xValue
def chkCode(self, did, xPos, off=2): # 1-验证成功;2-验证失败;3-验证码过期;4-验证次数超过3次,off-误差值
rdsKey = did + kSuffix
rdsChkKey = did + "_captchaCnt"
rdsKeyResult = did + "_captchaResult"
rds = self.getRedis()
try:
xValue = rds.get(rdsKey)
xPosRDS = int(xValue)
except:
rds.delete(rdsKey)
rds.delete(rdsChkKey)
return 3
rdsChkCount = rds.incr(rdsChkKey)
if (rdsChkCount > 3):
rds.delete(rdsKey)
rds.delete(rdsChkKey)
return 4
if (abs(xPosRDS - xPos) <= off):
rds.delete(rdsKey)
rds.delete(rdsChkKey)
rds.set(rdsKeyResult, True, ex=30)
return 1
else:
return 2
# 生成手机号验证码
def setSmsCode(self, did):
rdsKeyResult = did + "_captchaMobile"
rds = self.getRedis()
randomnum=random.randint(10000,999999)
try:
rds.set(rdsKeyResult, randomnum, ex=120)
result = {"code": 200, "smscode": randomnum}
except:
result = {"code": 203, "smscode":0}
return result
# 检测短信验证码
def chkSmsCode(self, did,smscode):
rdsKeyResult = did + "_captchaMobile"
rds = self.getRedis()
xValue = False
try:
xall = rds.get(rdsKeyResult)
xall = int(xall)
if(int(smscode)==xall):
rds.delete(rdsKeyResult)
xValue=True
except:
print("验证失败")
return xValue
if __name__=='__main__':
myCaptcha = captcha()
print(myCaptcha.getCode('abcdefghijklmnopqrstuvwxdefghi3d'))
#print(myCaptcha.chkCode('abcdefghijklmnopqrstuvwxdefghi3d', 182))
下载地址: https://download.csdn.net/download/jylonger/10771662
实例展示: http://www.xiuler.com （可输入32位字符测试，例：OtgsFq6d4mv7sEox4b2wBTdRtIBCSug8）
