Django 中文件上传的三种方式
方式一:
通过form表单提交到后台
前段:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <form action="/upload/" method="post" enctype="multipart/form-data"> <input type="file" name="fafafa"> <input type="submit"> </form> </body> </html>
Django 后端:
def upload(request): if request.method == 'POST':# 获取对象 obj = request.FILES.get('fafafa') import os
# 上传文件的文件名
print(obj.name) f = open(os.path.join(BASE_DIR, 'static', 'pic', obj.name), 'wb') for chunk in obj.chunks(): f.write(chunk) f.close() return HttpResponse('OK') return render(request, 'upload/upload.html')
方式二:
通过ajax提交
前段
<div> <input type="file" name="file" id="file_upload"> <input type="button" value="上传" onclick="FileUpload()"> </div>
JS:
<script src="/static/js/jquery-3.2.1.min.js"></script> <script> function FileUpload() { var form_data = new FormData(); var file_info =$( '#file_upload')[0].files[0]; form_data.append('file',file_info); //if(file_info==undefined)暂且不许要判断是否有附件 //alert('你没有选择任何文件'); //return false $.ajax({ url:'/upload_ajax/', type:'POST', data: form_data, processData: false, // tell jquery not to process the data contentType: false, // tell jquery not to set contentType success: function(callback) { console.log('ok') } }); }</script>
Django 后端:
def upload_ajax(request): if request.method == 'POST': file_obj = request.FILES.get('file') import os f = open(os.path.join(BASE_DIR, 'static', 'pic', file_obj.name), 'wb') print(file_obj,type(file_obj)) for chunk in file_obj.chunks(): f.write(chunk) f.close() print('11111') return HttpResponse('OK')
注意:
前台发送ajax请求时:
processData: false, // tell jquery not to process the data
contentType: false, // tell jquery not to set contentType
必须设置
方式三:
通过iframe标签提交
前段:
<div> <form id="my_form" name="form" action="/upload_iframe/" method="POST" enctype="multipart/form-data"> <input type="text" name="user"> <input type="password" name="password"> <input type="file" name="file"> <input type="button" value="upload" onclick="UploadFile()"> </form> <iframe id='my_iframe' name='my_iframe' src="" class="hide"></iframe> </div>
JS:
function UploadFile() { document.getElementById('my_iframe').onload = Testt; document.getElementById('my_form').target = 'my_iframe'; document.getElementById('my_form').submit(); } function Testt(ths){ var t = $("#my_iframe").contents().find("body").text(); console.log(t); }
Django 后端:
def upload_iframe(request): if request.method == 'POST': print(request.POST.get('user', None)) print(request.POST.get('password', None)) file_obj = request.FILES.get('file') import os f = open(os.path.join(BASE_DIR, 'static', 'pic', file_obj.name), 'wb') print(file_obj,type(file_obj)) for chunk in file_obj.chunks(): f.write(chunk) f.close() print('11111') return HttpResponse('OK')
以上是文件上传的三种方式,在Tornado种也可以使用。
扩展:
在前段提交的时候 可以存在 checkbox 标签, 在Django中对于这种标签在后台获取值时用:
request.POST.getlist('favor', None) checkbox
其它
request.POST.get('favor', None) checkbox