我创建了一个多阶段表单来接受数据，然后将其提供给我的 servlet。
HTML 代码 ->
<head>
<meta charset="UTF-8">
<title>Registration Form - Unity Bank</title>
<link rel="stylesheet" href="css/reset.css">
<link rel="stylesheet" href="css/style.css"> </head>
<body>
<!-- multistep form -->
<br>
<p align="center">
<img src="Images/logo.png" width="20%" height="20%"></p>
<form action="submitInfo" method="post" id="msform" enctype="multipart/form-data">
<!-- progressbar -->
<ul id="progressbar">
<li class="active">Account Setup</li>
<li>Personal Details</li>
<li>Personal Details - 2</li>
</ul>
<!-- fieldsets -->
<fieldset>
<h2 class="fs-title">Create your account</h2>
<h3 class="fs-subtitle">Get your account credentials</h3>
<input type="text" name="email" placeholder="Email" />
<input type="password" name="pass" placeholder="Password" />
<input type="password" name="cpass" placeholder="Confirm Password" />
<input type="button" name="next" class="next action-button" value="Next" /> </fieldset>
<fieldset>
<h2 class="fs-title">Personal Details</h2>
<h3 class="fs-subtitle">Enter details carefully !</h3>
<input type="text" name="fname" placeholder="First Name" />
<input type="text" name="lname" placeholder="Last Name" />
<input type="text" name="phone" placeholder="Phone" />
<textarea name="address" placeholder="Address"></textarea>
<input type="text" name="country" placeholder="Country" />
<input type="text" name="state" placeholder="State" />
<input type="text" name="city" placeholder="City" />
<input type="text" name="pin" placeholder="PIN" />
<input type="button" name="previous" class="previous action-button" value="Previous" />
<input type="button" name="next" class="next action-button" value="Next" /> </fieldset>
<fieldset>
<h2 class="fs-title">Personal Details - 2 </h2>
<h3 class="fs-subtitle">Some more information please !</h3> <span>Male<input type="radio" name="sex" value="M" />
Female<input type="radio" name="sex" value="F" /></span>
<br><br>
<span>Enter Date Of Birth</span><br><br>
<input type="date" name="bday" />
<span>Choose Profile Picture</span><br>
<input type='file' onchange="readImage(this);" /> <img id="blah" src="#" alt="Profile Picture" />
<br>
<input type="button" name="previous" class="previous action-button" value="Previous" />
<input type="submit" name="submit_form" class="submit action-button" value="Submit" /> </fieldset>
</form>
<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js'></script>
<script src="js/index.js"></script>
</body>
CSS 代码 -->
/*custom font*/
@import url(http://fonts.googleapis.com/css?family=Montserrat);
/*basic reset*/
* {
margin: 0;
padding: 0;
}
html {
height: 150%;
/*Image only BG fallback*/
/*background = gradient + image pattern combo*/
background: linear-gradient(rgba(14, 137, 214, 0.6), rgba(127, 190, 8, 0.6));
}
body {
font-family: montserrat, arial, verdana;
}
span {
font-size: 14px;
color: #1f476d;
}
/*form styles*/
#msform {
width: 550px;
margin: 50px auto;
text-align: center;
position: relative;
}
#msform fieldset {
background: white;
border: 0 none;
border-radius: 3px;
box-shadow: 0 0 15px 1px rgba(0, 0, 0, 0.4);
padding: 20px 30px;
box-sizing: border-box;
width: 80%;
margin: 0 10%;
/*stacking fieldsets above each other*/
position: relative;
}
/*Hide all except first fieldset*/
#msform fieldset:not(:first-of-type) {
display: none;
}
/*inputs*/
#msform input,
#msform textarea {
padding: 15px;
border: 1px solid #ccc;
border-radius: 10px;
margin-bottom: 10px;
width: 100%;
box-sizing: border-box;
font-family: montserrat;
color: #2C3E50;
font-size: 13px;
}
/*buttons*/
#msform .action-button {
width: 100px;
background: #27AE60;
font-weight: bold;
color: white;
border: 0 none;
border-radius: 1px;
cursor: pointer;
padding: 10px 5px;
margin: 10px 5px;
}
#msform .action-button:hover,
#msform .action-button:focus {
box-shadow: 0 0 0 2px white, 0 0 0 3px #27AE60;
}
/*headings*/
.fs-title {
font-size: 15px;
text-transform: uppercase;
color: #2C3E50;
margin-bottom: 10px;
}
.fs-subtitle {
font-weight: normal;
font-size: 11px;
color: #666;
margin-bottom: 20px;
}
/*progressbar*/
#progressbar {
margin-bottom: 30px;
overflow: hidden;
/*CSS counters to number the steps*/
counter-reset: step;
}
#progressbar li {
list-style-type: none;
color: white;
text-transform: uppercase;
font-size: 9px;
width: 33.33%;
float: left;
position: relative;
}
#progressbar li:before {
content: counter(step);
counter-increment: step;
width: 20px;
line-height: 20px;
display: block;
font-size: 10px;
color: #333;
background: white;
border-radius: 3px;
margin: 0 auto 5px auto;
}
/*progressbar connectors*/
#progressbar li:after {
content: '';
width: 100%;
height: 2px;
background: white;
position: absolute;
left: -50%;
top: 9px;
z-index: -1;
/*put it behind the numbers*/
}
#progressbar li:first-child:after {
/*connector not needed before the first step*/
content: none;
}
/*marking active/completed steps green*/
/*The number of the step and the connector before it = green*/
#progressbar li.active:before,
#progressbar li.active:after {
background: #27AE60;
color: white;
}
用于多阶段表单的 JAVASCRIPT -->
var current_fs, next_fs, previous_fs; //fieldsets
var left, opacity, scale; //fieldset properties which we will animate
var animating; //flag to prevent quick multi-click glitches
function readImage(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
$('#blah')
.attr('src', e.target.result)
.width(150)
.height(200);
};
reader.readAsDataURL(input.files[0]);
}
}
$(".next").click(function () {
if (animating) return false;
animating = true;
current_fs = $(this).parent();
next_fs = $(this).parent().next();
//activate next step on progressbar using the index of next_fs
$("#progressbar li").eq($("fieldset").index(next_fs)).addClass("active");
//show the next fieldset
next_fs.show();
//hide the current fieldset with style
current_fs.animate({
opacity: 0
}, {
step: function (now, mx) {
//as the opacity of current_fs reduces to 0 - stored in "now"
//1. scale current_fs down to 80%
scale = 1 - (1 - now) * 0.2;
//2. bring next_fs from the right(50%)
left = (now * 50) + "%";
//3. increase opacity of next_fs to 1 as it moves in
opacity = 1 - now;
current_fs.css({
'transform': 'scale(' + scale + ')'
, 'position': 'absolute'
});
next_fs.css({
'left': left
, 'opacity': opacity
});
}
, duration: 800
, complete: function () {
current_fs.hide();
animating = false;
}, //this comes from the custom easing plugin
easing: 'easeInOutBack'
});
});
$(".previous").click(function () {
if (animating) return false;
animating = true;
current_fs = $(this).parent();
previous_fs = $(this).parent().prev();
//de-activate current step on progressbar
$("#progressbar li").eq($("fieldset").index(current_fs)).removeClass("active");
//show the previous fieldset
previous_fs.show();
//hide the current fieldset with style
current_fs.animate({
opacity: 0
}, {
step: function (now, mx) {
//as the opacity of current_fs reduces to 0 - stored in "now"
//1. scale previous_fs from 80% to 100%
scale = 0.8 + (1 - now) * 0.2;
//2. take current_fs to the right(50%) - from 0%
left = ((1 - now) * 50) + "%";
//3. increase opacity of previous_fs to 1 as it moves in
opacity = 1 - now;
current_fs.css({
'left': left
});
previous_fs.css({
'transform': 'scale(' + scale + ')'
, 'opacity': opacity
});
}
, duration: 800
, complete: function () {
current_fs.hide();
animating = false;
}, //this comes from the custom easing plugin
easing: 'easeInOutBack'
});
});
我刚刚在 servlet 的 doPost 方法中设置了一个简单的 System.out.println("Test") 以便进行调试。提交按钮不会触发 servlet。我以一种非常基本的形式使用了相同的 servlet，其中仅包含一个文本输入和一个提交按钮，以查看它是否正常工作并且确实正常工作，因此这不是一个设置问题。
那么谁能指出代码中的任何错误吗？为什么 servlet 没有被触发？
最佳答案
这部分代码:
$(".submit").click(function () {
return false;
})
阻止事件冒泡，这意味着按钮未提交表单。
删除这个return false;或整个函数(无论如何，你在这里没有做任何事情)。
关于javascript - HTML 表单未提交，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38537850/