dropzone的原理是模拟表单来上传文件，html中的元素有多重形式。
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<form id="dropz" action="/upload.php" enctype="multipart/form-data"> <input type="file" name="file"></form> |
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<div id="dropz"></div> |
引入dropzone.min.css之后会有更漂亮的外观；
然后可以自己添加些外观样式覆盖它，如：
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<style> #filedropzone{ width: 900px; height: 220px; margin-left: 200px; margin-top: 100px; border: 3px dashed green; border-radius: 2%; box-shadow: 3px 3px 5px #888888; } </style> |
必须配置js才能上传
1.如果没有引入jquery:
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var myDropzone = new Dropzone("div#mydropzone", {url: "/upload"}); |
2.如果引入了jquery:
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$("#dropz").dropzone({url: "/upload"}) |
<input>元素的name属性，默认为file。|
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$("#dropz").dropzone({ init: function() { this.on("addedfile", function(file) { // actions... }); }}); |
没有添加jquery时：
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dropz.on("addedfile", function(file) { // actions...}); |
html文件demo
<link rel="stylesheet" href="/static/plugins/dropzone/dropzone.css">
<div id="upload_div">
<p>请上传您的代码（如包含文件夹需要打包后再上传）</p>
<form id="filedropzone" method="post" action="/upload" class="dropzone dz-clickable" >
<div class="dz-default dz-message">
<div class="dz-icon icon-wrap icon-circle icon-wrap-md">
<i class="fa fa-cloud-upload fa-3x"></i>
</div>
<div>
<p class="dz-text">把打包后的代码拖放到这里</p>
<p class="text-muted">最多可上传2张照片</p>
</div>
</div>
</form>
</div>
<script src="/static/plugins/dropzone/dropzone.js"></script>
<script>
$(document).ready(function () {
Dropzone.options.filedropzone = {
url:"{{ request.path }}",
paramName: "file", // The name that will be used to transfer the file
maxFilesize: 1, // MB,
addRemoveLinks:true,
maxFiles:5,
uploadMultiple:true,
accept: function(file, done) {
if (! file.name.endsWith(".zip") ) {
alert("只能上传.zip格式的压缩包")
done("文件为上传")
myDropzone.removeFile(file);
}
else { done(); }
}
};
Dropzone.autoDiscover = false;
myDropzone = new Dropzone("#filedropzone");
myDropzone.on("addedfile", function(file) {
/* Maybe display some more file information on your page */
});
myDropzone.on("success", function(file,response) {
/* Maybe display some more file information on your page */
console.log(‘filex upload done...‘, response);
} )
})
</script>
#urls.py
from app01 import views
urlpatterns = [
url(r‘^admin/‘, admin.site.urls),
url(r‘^test/‘, views.dropzoneTest),
]
#views.py
from django.shortcuts import render
def dropzoneTest(request):
if request.is_ajax():
file = request.FILES.get(‘file‘)
with open(‘file.jpg‘,‘wb‘) as f:
for line in file:
f.write(line)
return render(request,‘dropzoneTest.html‘)
#dropzoneDemo.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
{% load static %}
<link rel="stylesheet" href="{% static ‘dropzone.css‘ %}">
<script src="{% static ‘jquery-3.2.1.min.js‘ %}"></script>
<script src="{% static ‘dropzone.js‘ %}"></script>
</head>
<body>
<p>请上传身份照正反面照片</p>
<form id="filedropzone" method="post" action="{{ request.path }}" class="dropzone dz-clickable" >{% csrf_token %}
<div class="dz-default dz-message">
<div class="dz-icon icon-wrap icon-circle icon-wrap-md">
<i class="fa fa-cloud-upload fa-3x"></i>
</div>
<div>
<p class="dz-text">把证件信息拖放到这里</p>
<p class="text-muted">最多可上传2张照片</p>
</div>
</div>
</form>
<!--------------------------------------------------------------->
<script>
$(document).ready(function () {
$("#filedropzone").dropzone({
url: "{{ request.path }}",
maxFiles: 5,
maxFilesize: 1024,
acceptedFiles: ".jpg,.jpeg,.doc,.docx,.ppt,.pptx,.txt,.avi,.pdf,.mp3,.zip",
autoProcessQueue: false,
paramName: "file",
dictDefaultMessage: "拖入需要上传的文件",
init: function () {
var myDropzone = this, submitButton = document.querySelector("#qr"),
cancelButton = document.querySelector("#cancel");
myDropzone.on(‘addedfile‘, function (file) {
//添加上传文件的过程，可再次弹出弹框，添加上传文件的信息
});
myDropzone.on(‘sending‘, function (data, xhr, formData) {
//向后台发送该文件的参数
formData.append(‘watermark‘, jQuery(‘#info‘).val());
});
myDropzone.on(‘success‘, function (files, response) {
//文件上传成功之后的操作
});
myDropzone.on(‘error‘, function (files, response) {
//文件上传失败后的操作
});
myDropzone.on(‘totaluploadprogress‘, function (progress, byte, bytes) {
//progress为进度百分比
$("#pro").text("上传进度：" + parseInt(progress) + "%");
//计算上传速度和剩余时间
var mm = 0;
var byte = 0;
var tt = setInterval(function () {
mm++;
var byte2 = bytes;
var remain;
var speed;
var byteKb = byte / 1024;
var bytesKb = bytes / 1024;
var byteMb = byte / 1024 / 1024;
var bytesMb = bytes / 1024 / 1024;
if (byteKb <= 1024) {
speed = (parseFloat(byte2 - byte) / (1024) / mm).toFixed(2) + " KB/s";
remain = (byteKb - bytesKb) / parseFloat(speed);
} else {
speed = (parseFloat(byte2 - byte) / (1024 * 1024) / mm).toFixed(2) + " MB/s";
remain = (byteMb - bytesMb) / parseFloat(speed);
}
$("#dropz #speed").text("上传速率：" + speed);
$("#dropz #time").text("剩余时间" + arrive_timer_format(parseInt(remain)));
if (bytes >= byte) {
clearInterval(tt);
if (byteKb <= 1024) {
$("#dropz #speed").text("上传速率：0 KB/s");
} else {
$("#dropz #speed").text("上传速率：0 MB/s");
}
$("#dropz #time").text("剩余时间：0:00:00");
}
}, 1000);
});
submitButton.addEventListener(‘click‘, function () {
//点击上传文件
myDropzone.processQueue();
});
cancelButton.addEventListener(‘click‘, function () {
//取消上传
myDropzone.removeAllFiles();
});
}
});
//剩余时间格式转换：
function arrive_timer_format(s) {
var t;
if (s > -1) {
var hour = Math.floor(s / 3600);
var min = Math.floor(s / 60) % 60;
var sec = s % 60;
var day = parseInt(hour / 24);
if (day > 0) {
hour = hour - 24 * day;
t = day + "day " + hour + ":";
}
else t = hour + ":";
if (min < 10) {
t += "0";
}
t += min + ":";
if (sec < 10) {
t += "0";
}
t += sec;
}
return t;
}
})
</script>
</body>
</html>
原文：https://www.cnblogs.com/shuai1991/p/11072077.html