文件上传、文件展示、文件删除、文件下载
models.py：
class KnowledgeFileDownload(models.Model): person = models.CharField("上传人", blank=True, null=True, max_length=64) upload_time = models.DateTimeField("上传时间", blank=True, null=True) remark = models.CharField("备注", blank=True, null=True, max_length=500) file_name = models.CharField("文件名称", blank=True, null=True, max_length=128) state = models.CharField("状态", blank=True, null=True, max_length=20)
urls.py：
url(r'^downloadlist/$', downloadlist, {'funid': '7'}), url(r'^download/$', download), url(r'^download_list_data/$', download_list_data), url(r'^knowledge_file_del/$', knowledge_file_del),
views.py：
# 上传 def downloadlist(request, funid): if request.user.is_authenticated(): errors = [] if request.method == 'POST': file_remark = request.POST.get("file_remark", "") my_file = request.FILES.get("myfile", None) if not my_file: errors.append("请选择要导入的文件。") else: if if_contains_sign(my_file.name): errors.append(r"""请注意文件命名格式，'/"*?<>'符号文件不允许上传。""") else: myfilepath = settings.BASE_DIR + os.sep + "drm" + os.sep + "upload" + os.sep + "knowledgefiles" + os.sep + my_file.name c_exist_model = KnowledgeFileDownload.objects.filter(file_name=my_file.name).exclude(state="9") if os.path.exists(myfilepath) or c_exist_model.exists(): errors.append("该文件已存在,请勿重复上传。") else: with open(myfilepath, 'wb+') as f: for chunk in my_file.chunks(): # 分块写入文件 f.write(chunk) # 存入字段：备注，上传时间，上传人 c_file = KnowledgeFileDownload() c_file.file_name = my_file.name c_file.person = request.user.userinfo.fullname c_file.remark = file_remark c_file.upload_time = datetime.datetime.now() c_file.save() errors.append("导入成功。") return render(request, "downloadlist.html", {'username': request.user.userinfo.fullname, "errors": errors, "pagefuns": getpagefuns(funid, request=request)}) else: return HttpResponseRedirect("/login") # 展示 def download_list_data(request): if request.user.is_authenticated(): result = [] c_files = KnowledgeFileDownload.objects.exclude(state="9") if c_files.exists(): for file in c_files: result.append({ "id": file.id, "name": file.person, "up_time": "{0:%Y-%m-%d %H:%M:%S}".format(file.upload_time), "remark": file.remark, "file_name": file.file_name, }) return JsonResponse({ "data": result }) # 删除 def knowledge_file_del(request): if request.user.is_authenticated(): file_id = request.POST.get("id", "") assert int(file_id), "网页异常" c_file = KnowledgeFileDownload.objects.filter(id=file_id) if c_file.exists(): c_file = c_file[0] c_file.delete() c_file_name = c_file.file_name the_file_name = settings.BASE_DIR + os.sep + "drm" + os.sep + "upload" + os.sep + "knowledgefiles" + os.sep + c_file_name if os.path.exists(the_file_name): os.remove(the_file_name) result = "删除成功。" else: result = "文件不存在，删除失败,请于管理员联系。" return JsonResponse({ "data": result }) # 下载 def download(request): if request.user.is_authenticated(): file_id = request.GET.get("file_id", "") assert int(file_id), "网页异常" c_file = KnowledgeFileDownload.objects.filter(id=file_id) if c_file.exists(): c_file = c_file[0] c_file_name = c_file.file_name else: raise Http404() try: the_file_name = settings.BASE_DIR + os.sep + "drm" + os.sep + "upload" + os.sep + "knowledgefiles" + os.sep + c_file_name response = StreamingHttpResponse(file_iterator(the_file_name)) response['Content-Type'] = 'application/octet-stream; charset=unicode' response['Content-Disposition'] = 'attachment;filename="{0}"'.format( escape_uri_path(c_file_name)) # escape_uri_path()解决中文名文件 return response except: return HttpResponseRedirect("/downloadlist") else: return HttpResponseRedirect("/login")
downloadlist.html：
<table class="table table-striped table-bordered table-hover table-checkable order-column" id="sample_1"> <thead> <tr> <th style="40px;"> 序号</th> <th> 上传人</th> <th> 上传时间</th> <th> 备注</th> <th> 文件名</th> <th style="50px;"> 操作</th> </tr> </thead> <tbody> </tbody> </table> <div id="static1" class="modal fade" tabindex="-1" data-backdrop="static" data-keyboard="false"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true"></button> <h4 class="modal-title">上传</h4> </div> <div class="panel-body"> <form action="" enctype="multipart/form-data" class="form-horizontal" method="post">{% csrf_token %} <div class="form-body"> <div class="form-group"> <label class="col-md-2 control-label"><span style="color:red; "></span>文件</label> <div class="col-md-10"> <div class="fileinput fileinput-new" data-provides="fileinput"> <div class="input-group input-large"> <div class="form-control uneditable-input input-fixed input-medium" data-trigger="fileinput"> <i class="fa fa-file fileinput-exists"></i> <span class="fileinput-filename"> </span> </div> <span class="input-group-addon btn default btn-file"> <span class="fileinput-new"> 选择文件 </span> <span class="fileinput-exists"> 重新选择 </span> <input type="file" name="myfile"> </span> <a href="javascript:;" class="input-group-addon btn red fileinput-exists" data-dismiss="fileinput"> 移除 </a> </div> </div> </div> </div> <div class="form-group"> <label class="col-md-2 control-label"><span style="color:red; "></span>备注</label> <div class="col-md-10"> <input id="file_remark" type="text" name="file_remark" class="form-control " placeholder=""> <div class="form-control-focus"></div> </div> </div> </div> <div class="form-actions "> <div class="modal-footer"> <button type="submit" id="upload" name="upload" class="btn green uppercase">上传</button> <button type="button" data-dismiss="modal" class="btn dark btn-outline">关闭 </button> </div> </div> </form> </div> </div> </div> </div> <link href="/static/assets/global/plugins/bootstrap-fileinput/bootstrap-fileinput.css" rel="stylesheet" type="text/css"/> <link href="/static/assets/global/plugins/datatables/datatables.min.css" rel="stylesheet" type="text/css"/> <link href="/static/assets/global/plugins/datatables/plugins/bootstrap/datatables.bootstrap.css" rel="stylesheet" type="text/css"/> <link href="/static/assets/global/css/components.css" rel="stylesheet" id="style_components" type="text/css"/> <link href="/static/assets/global/css/plugins.css" rel="stylesheet" type="text/css"/> <script src="/static/assets/global/plugins/datatables/datatables.min.js" type="text/javascript"></script> <script src="/static/assets/global/plugins/datatables/plugins/bootstrap/datatables.bootstrap.js" type="text/javascript"></script> <script src="/static/assets/global/plugins/bootstrap-fileinput/bootstrap-fileinput.js" type="text/javascript"></script>
downloadlist.js：
$('#sample_1').dataTable({
"bAutoWidth": true,
"bSort": false,
"bProcessing": true,
"ajax": "../download_list_data/",
"columns": [
{"data": "id"},
{"data": "name"},
{"data": "up_time"},
{"data": "remark"},
{"data": "file_name"},
{"data": null}
],
"columnDefs": [{
"targets": -1, // 指定最后一列添加按钮；
"data": null,
"width": "60px", // 指定列宽；
"render": function (data, type, full) {
return "<td><button class='btn btn-xs btn-primary' type='button'><a href='/download/?file_id'><i class='fa fa-arrow-circle-down' style='color: white'></i></a></button>" +
"<button title='删除' id='delrow' class='btn btn-xs btn-primary' type='button'><i class='fa fa-trash-o'></i></button></td>".replace("file_id", "file_id=" + full.id)
}
}],
"oLanguage": {
"sLengthMenu": "每页显示 _MENU_ 条记录",
"sZeroRecords": "抱歉， 没有找到",
"sInfo": "从 _START_ 到 _END_ /共 _TOTAL_ 条数据",
"sInfoEmpty": "没有数据",
"sInfoFiltered": "(从 _MAX_ 条数据中检索)",
"sSearch": "搜索",
"oPaginate": {
"sFirst": "首页",
"sPrevious": "前一页",
"sNext": "后一页",
"sLast": "尾页"
},
"sZeroRecords": "没有检索到数据",
}
});
// 删除
$('#sample_1 tbody').on('click', 'button#delrow', function () {
if (confirm("确定要删除该条数据？")) {
var table = $('#sample_1').DataTable();
var data = table.row($(this).parents('tr')).data();
$.ajax({
type: "POST",
url: "../knowledge_file_del/",
data:
{
id: data.id,
},
success: function (data) {
if (data.data === "删除成功。") {
table.ajax.reload();
alert(data.data);
}
else
alert(data.data);
},
error: function (e) {
alert("删除失败，请于管理员联系。");
}
});
}
});
// 新增
$("#new").click(function () {
$("#file_remark").val("");
});
上传：
下载：
