标签：点击 prim 判断 res ogr complete eth html rip
需要使用的 js
路由
from django.urls import path
from . import views
urlpatterns = [
path('index/',views.index),
path('checkChunk/',views.checkChunk,name='checkChunk'),
path('mergeChunks/',views.mergeChunks,name='mergeChunks'),
path('upload/',views.upload,name='upload'),
]视图
from django.shortcuts import render
from django.http import JsonResponse
import os
def index(request):
return render(request,'upload.html')
# 检查上传分片是否重复，如果重复则不提交，否则提交
def checkChunk(request):
# post请求
if request.method == 'POST':
# 获得上传文件块的大小,如果为0，就告诉他不要上传了
chunkSize = request.POST.get("chunkSize")
if chunkSize == '0':
return JsonResponse({'ifExist': True})
# 如果文件块大小不为0 ，那么就上传，需要拼接一个临时文件
file_name = request.POST.get('fileMd5')+request.POST.get('chunk')
# 如果说这个文件不在已经上传的目录，就可以上传，已经存在了就不需要上传。
if file_name not in get_deep_data():
return JsonResponse({'ifExist': False})
return JsonResponse({'ifExist': True})
# 判断一个文件是否在一个目录下
def get_deep_data(path='static/upload/'):
result = []
data = os.listdir(path)
for i in data:
if os.path.isdir(i):
get_deep_data(i)
else:
result.append(i)
return result
# 前端上传的分片 保存到 指定的目录下
def upload(request):
if request.method == 'POST':
md5 = request.POST.get("fileMd5")
chunk_id = request.POST.get("chunk","0")
fileName = "%s-%s"%(md5,chunk_id)
file = request.FILES.get("file")
with open('static/upload/'+fileName,'wb') as f:
for i in file.chunks():
f.write(i)
return JsonResponse({'upload_part':True})
# 将每次上传的分片合并成一个新文件
def mergeChunks(request):
if request.method == 'POST':
# 获取需要给文件命名的名称
fileName = request.POST.get("fileName")
# 该图片上传使用的md5码值
md5 = request.POST.get("fileMd5")
id = request.POST.get("fileId")
# 分片的序号
chunk = 0
# 完成的文件的地址为
path = os.path.join('static','upload',fileName)
with open(path,'wb') as fp:
while True:
try:
filename = 'static/upload/{}-{}'.format(md5,chunk)
with open(filename,'rb') as f:
fp.write(f.read())
# 当图片写入完成后，分片就没有意义了，删除
os.remove(filename)
except:
break
chunk += 1
return JsonResponse({'upload':True,'fileName':fileName,'fileId':id})前端
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>webuploader上传</title>
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/webuploader/0.1.1/webuploader.css">
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css">
<script src="/static/jquery-2.2.3.js"></script>
<script src="/static/webuploader.min.js"></script>
<script type="text/javascript" src="/static/hashmap.js"></script>
<style type="text/css">
#picker {
display: inline-block;
line-height: 1.428571429;
vertical-align: middle;
margin: 0 12px 0 0;
}
</style>
</head>
<body>
<div id="uploader" class="container">
<!--用来存放文件信息-->
<div id="thelist" class="row">
<div class="panel panel-primary">
<div class="panel-heading">webuploader文件上传</div>
<table class="table table-striped table-bordered" id="uploadTable">
<thead>
<tr>
<th>序号</th>
<th>文件名称</th>
<th>文件大小</th>
<th>上传状态</th>
<th>上传进度</th>
<th style="width:15%;">操作</th>
</tr>
</thead>
<tbody></tbody>
</table>
<div class="panel-footer">
<div id="picker">选择文件</div>
<button id="btn" class="btn btn-default">开始上传</button>
</div>
</div>
</div>
</div>
<script type="text/javascript">
var fileMd5;
var fileSuffix;
var $list=$("#thelist table>tbody");
var state = 'pending';//初始按钮状态
var $btn=$("#btn");
var count=0;
var map=new HashMap();
//监听分块上传过程中的三个时间点
WebUploader.Uploader.register({
"before-send-file" : "beforeSendFile",
"before-send" : "beforeSend",
"after-send-file" : "afterSendFile",
}, {
//时间点1：所有分块进行上传之前调用此函数
beforeSendFile : function(file) {
var deferred = WebUploader.Deferred();
//1、计算文件的唯一标记，用于断点续传
// (new WebUploader.Uploader()).md5File(file, 0, 10 * 1024 * 1024)
(new WebUploader.Uploader()).md5File(file, 0, 1024)
.progress(function(percentage) {
$('#' + file.id).find("td.state").text("正在读取文件信息...");
}).then(function(val) {
fileMd5 = val;
$('#' + file.id).find("td.state").text("成功获取文件信息...");
//获取文件信息后进入下一步
deferred.resolve();
});
return deferred.promise();
},
//时间点2：如果有分块上传，则每个分块上传之前调用此函数
beforeSend : function(block) {
var deferred = WebUploader.Deferred();
$.ajax({
type : "POST",
url : "{% url 'checkChunk'%}",
data : {
//文件唯一标记
fileMd5 : fileMd5,
//当前分块下标
chunk : block.chunk,
//当前分块大小
chunkSize : block.end - block.start
},
dataType : "json",
success : function(response) {
if (response.ifExist) {
//分块存在，跳过
deferred.reject();
} else {
//分块不存在或不完整，重新发送该分块内容
deferred.resolve();
}
}
});
this.owner.options.formData.fileMd5 = fileMd5;
deferred.resolve();
return deferred.promise();
},
//时间点3：所有分块上传成功后调用此函数
afterSendFile : function(file) {
//如果分块上传成功，则通知后台合并分块
$.ajax({
type : "POST",
url : "{% url 'mergeChunks'%}",
data : {
fileId : file.id,
fileMd5 : fileMd5,
fileSuffix:fileSuffix,
fileName:file.name,
},
success : function(response) {
console.log(response.fileName+" 上传成功")
$('#del'+file.id).hide();
}
});
}
});
var uploader = WebUploader
.create({
// swf文件路径
swf : 'https://cdnjs.cloudflare.com/ajax/libs/webuploader/0.1.1/Uploader.swf',
// 文件接收服务端。
server : "{% url 'upload' %}",
// 选择文件的按钮。可选。
// 内部根据当前运行是创建，可能是input元素，也可能是flash.
pick : {
id : '#picker',//这个id是你要点击上传文件的id
multiple : true
},
// 不压缩image, 默认如果是jpeg，文件上传前会压缩一把再上传！
resize : true,
auto : false,
//开启分片上传
chunked : true,
chunkSize : 10 * 1024 * 1024,
accept : {
extensions : "txt,jpg,jpeg,bmp,png,zip,rar,war,pdf,cebx,doc,docx,ppt,pptx,xls,xlsx,iso,flv,mp4",
mimeTypes : '.txt,.jpg,.jpeg,.bmp,.png,.zip,.rar,.war,.pdf,.cebx,.doc,.docx,.ppt,.pptx,.xls,.xlsx,.iso,.flv,.mp4'
}
});
// 当有文件被添加进队列的时候
uploader.on('fileQueued', function(file) {
//保存文件扩展名
fileSuffix=file.ext;
fileName=file.source['name'];
var fileSize=file.size;
var fileSizeStr="";
fileSizeStr=WebUploader.Base.formatSize(fileSize);
count++;
$list.append(
'<tr id="' + file.id + '" class="item" flag=0>'+
'<td class="index">' + count + '</td>'+
'<td class="info">' + file.name + '</td>'+
'<td class="size">' + fileSizeStr + '</td>'+
'<td class="state">等待上传...</td>'+
'<td class="percentage"></td>'+
'<td class="operate"><button name="upload" id="del'+file.id+'" class="btn btn-warning">开始</button><button name="delete" class="btn btn-error">删除</button></td></tr>');
map.put(file.id+"",file);
});
// 文件上传过程中创建进度条实时显示。
uploader.on('uploadProgress', function(file, percentage) {
$('#' + file.id).find('td.percentage').text(
'上传中 ' + Math.round(percentage * 100) + '%');
});
uploader.on('uploadSuccess', function(file) {
$('#' + file.id).find('td.state').text('已上传');
});
uploader.on('uploadError', function(file) {
$('#' + file.id).find('td.state').text('上传出错');
});
uploader.on('uploadComplete', function(file) {
uploader.removeFile(file);
});
uploader.on('all', function(type) {
if (type === 'startUpload') {
state = 'uploading';
} else if (type === 'stopUpload') {
state = 'paused';
} else if (type === 'uploadFinished') {
state = 'done';
}
if (state === 'uploading') {
$btn.text('暂停上传');
} else {
$btn.text('开始上传');
}
});
$btn.on('click', function(){
if (state === 'uploading'){
uploader.stop(true);
} else {
uploader.upload();
}
});
$("body").on("click","#uploadTable button[name='upload']",function(){
flag=$(this).parents("tr.item").attr("flag")^1;
$(this).parents("tr.item").attr("flag",flag);
var id=$(this).parents("tr.item").attr("id");
if(flag==1){
$(this).text("暂停");
uploader.upload(uploader.getFile(id,true));
}else{
$(this).text("开始");
uploader.stop(uploader.getFile(id,true));
});
$("body").on("click","#uploadTable button[name='delete']",function(){
var id=$(this).parents("tr.item").attr("id");
$(this).parents("tr.item").remove();
uploader.removeFile(uploader.getFile(id,true));
map.remove(id);
});
</script>
</body>
</html>标签：点击 prim 判断 res ogr complete eth html rip
原文地址：https://www.cnblogs.com/wuxiaoshi/p/12422915.html
