views:
def mgmt_files(request): #列出树形目录,上传文件页面 if request.method == ‘POST‘: path_root = "D:\\py\\ITFiles" #上传文件的主目录 myFile =request.FILES.get("file", None) # 获取上传的文件,如果没有文件,则默认为None if not myFile: dstatus = "请选择需要上传的文件!" else: path_ostype = os.path.join(path_root,request.POST.get("ostype")) path_dst_file = os.path.join(path_ostype,myFile.name) # print path_dst_file if os.path.isfile(path_dst_file): dstatus = "%s 已存在!"%(myFile.name) else: destination = open(path_dst_file,‘wb+‘) # 打开特定的文件进行二进制的写操作 for chunk in myFile.chunks(): # 分块写入文件 destination.write(chunk) destination.close() dstatus = "%s 上传成功!"%(myFile.name) return HttpResponse(str(dstatus)) return render(request,‘sinfors/mgmt_files.html‘) def mgmt_file_download(request,*args,**kwargs): #提供文件下载页面 #定义文件分块下载函数 def file_iterator(file_name, chunk_size=512): with open(file_name,‘rb‘) as f: #如果不加‘rb’以二进制方式打开,文件流中遇到特殊字符会终止下载,下载下来的文件不完整 while True: c = f.read(chunk_size) if c: yield c else: break path_root = "D:\\py\\ITFiles" if kwargs[‘fpath‘] is not None and kwargs[‘fname‘] is not None: file_fpath = os.path.join(path_root,kwargs[‘fpath‘]) #kwargs[‘fapth‘]是文件的上一级目录名称 file_dstpath = os.path.join(file_fpath,kwargs[‘fname‘]) #kwargs[‘fname‘]是文件名称 response = StreamingHttpResponse(file_iterator(file_dstpath)) response[‘Content-Type‘] = ‘application/octet-stream‘ response[‘Content-Disposition‘] = ‘attachment;filename="{0}"‘.format(kwargs[‘fname‘]) #此处kwargs[‘fname‘]是要下载的文件的文件名称 return response
StreamingHttpResponse对象用于将文件流发送给浏览器,与HttpResponse对象非常相似,对于文件下载功能,使用StreamingHttpResponse对象更合理。通过文件流传输到浏览器,但文件流通常会以乱码形式显示到浏览器中,而非下载到硬盘上,因此,还要在做点优化,让文件流写入硬盘,给StreamingHttpResponse对象的Content-Type和Content-Disposition字段赋下面的值即可,如:
response[‘Content-Type‘] = ‘application/octet-stream‘
response[‘Content-Disposition‘] = ‘attachment;filename="filename.txt"‘
html页面:
<form id="uploadForm" enctype="multipart/form-data"> //文件上传的form {% csrf_token %} <input id="file" type="file" name="file" > //上传文件 <input type="radio" name="ostype" value="Windows" />Windows <input type="radio" name="ostype" value="Linux" />Linux <input type="radio" name="ostype" value="Network" />Network <input type="radio" name="ostype" value="DB" />DB <button id="upload" type="button" style="margin:20px">上传</button> </form>
js页面:
$("#upload").click(function(){ // alert(new FormData($(‘#uploadForm‘)[0])); var ostype = $(‘input:radio:checked‘).val() if (ostype == undefined){ alert(‘请选择上传的文件类型‘); } //获取单选按钮的值 $.ajax({ type: ‘POST‘, // data:$(‘#uploadForm‘).serialize(), data:new FormData($(‘#uploadForm‘)[0]), processData : false, contentType : false, //必须false才会自动加上正确的Content-Type // cache: false, success:function(response,stutas,xhr){ // parent.location.reload(); //window.location.reload(); // alert(stutas); alert(response); }, // error:function(xhr,errorText,errorStatus){ // alert(xhr.status+‘ error: ‘+xhr.statusText); // } timeout:6000 }); });
时间: 2024-12-17 17:49:43