java滑动验证解锁 java实现滑动验证解锁
夏微凉秋微暖 人气:01.html:
<div class="drag"> <div class="bg"></div> <div class="text" onselectstart="return false;">请拖动滑块解锁</div> <div class="dragBtn">>></div> </div> <script> /* 滑动验证码 */ var successRand = ''; //一、定义一个获取DOM元素的方法 var box = document.querySelector(".drag"),//容器 bg = document.querySelector(".bg"),//背景 text = document.querySelector(".text"),//文字 btn = document.querySelector(".dragBtn"),//滑块 success = false,//是否通过验证的标志 distance = box.offsetWidth - btn.offsetWidth;//滑动成功的宽度(距离) //二、给滑块注册鼠标按下事件 btn.onmousedown = function(e){ //1.鼠标按下之前必须清除掉后面设置的过渡属性 btn.style.transition = ""; bg.style.transition =""; //说明:clientX 事件属性会返回当事件被触发时,鼠标指针向对于浏览器页面(或客户区)的水平坐标。 //2.当滑块位于初始位置时,得到鼠标按下时的水平位置 var e = e || window.event; var downX = e.clientX; //三、给文档注册鼠标移动事件 document.onmousemove = function(e){ var e = e || window.event; //1.获取鼠标移动后的水平位置 var moveX = e.clientX; //2.得到鼠标水平位置的偏移量(鼠标移动时的位置 - 鼠标按下时的位置) var offsetX = moveX - downX; //3.在这里判断一下:鼠标水平移动的距离 与 滑动成功的距离 之间的关系 if( offsetX > distance){ offsetX = distance;//如果滑过了终点,就将它停留在终点位置 }else if( offsetX < 0){ offsetX = 0;//如果滑到了起点的左侧,就将它重置为起点位置 } //4.根据鼠标移动的距离来动态设置滑块的偏移量和背景颜色的宽度 btn.style.left = offsetX + "px"; bg.style.width = offsetX + "px"; //如果鼠标的水平移动距离 = 滑动成功的宽度 if( offsetX == distance){ //1.设置滑动成功后的样式 text.innerHTML = "验证通过"; text.style.color = "#fff"; btn.innerHTML = "√"; btn.style.color = "green"; bg.style.backgroundColor = "lightgreen"; //2.设置滑动成功后的状态 success = true; //成功后,清除掉鼠标按下事件和移动事件(因为移动时并不会涉及到鼠标松开事件) btn.onmousedown = null; document.onmousemove = null; //3.成功解锁后的回调函数 setTimeout(function(){ successRand = new Date().getTime() + Math.random(); var obj = {}; obj.rand = successRand; $.ajax({ type: "post", url: projectName + "/loginC/setRand", data: JSON.stringify(obj), datatype: 'json', contentType: "application/json", success: function (data) { //console.log(vm.parent.success); //console.log(vm.isTest); if (data.success == true) { } else { layer.alert(data.message); // change_authimage(); } }, error: function () { layer.alert("请求失败"); } }); },1); } } //四、给文档注册鼠标松开事件 document.onmouseup = function(e){ //如果鼠标松开时,滑到了终点,则验证通过 if(success){ return; }else{ //反之,则将滑块复位(设置了1s的属性过渡效果) btn.style.left = 0; bg.style.width = 0; btn.style.transition = "left 1s ease"; bg.style.transition = "width 1s ease"; } //只要鼠标松开了,说明此时不需要拖动滑块了,那么就清除鼠标移动和松开事件。 document.onmousemove = null; document.onmouseup = null; } } // 复位验证滑块 function restDragBtn() { /*btn.style.left = 0; bg.style.width = 0; btn.style.transition = "left 1s ease"; bg.style.transition = "width 1s ease"; text.innerHTML = "请拖动滑块解锁"; btn.innerHTML = ">>>"; text.style.color = "#a9a9a9";*/ location.reload(); } </script>
2.后端:
@RequestMapping(value="/setRand",method = RequestMethod.POST) @ResponseBody @ApiOperation(value = "设置验证码成功") //@ApiImplicitParam(paramType = "query",name= "username" ,value = "用户名",dataType = "string") /*public void userLogin(@RequestParam(value = "username" , required = false) String username, @RequestParam(value = "password" , required = false) String password)*/ public Message setRand(@RequestBody JSONObject json,HttpServletRequest request){ Message message = new Message(); String rand = json.getString("rand"); if(StringUtils.isNotBlank(rand)){ // 将认证码存入redis HttpSession httpSession = request.getSession(); redisUtil.set(httpSession.getId() + ".rand",rand); redisUtil.expire(httpSession.getId() + ".rand",60); message.setSuccess(true); }else{ message.setMessage("发生异常,请刷新重试"); } return message; }
3.登录验证时:
// 验证验证码 String randInput = json.getString("rand"); String rand = (String) redisUtil.get(httpSession.getId() + ".rand"); if(randInput==null||!randInput.equals(rand)) { message.setMessage("验证码验证失败"); // 清空验证码 redisUtil.set(httpSession.getId() + ".rand",""); return message; }
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