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
}); });