System.perspective.download wrong encoding

[tc.wang]

the file i downloaded from gateway server to my PC by the script system.perspective.download

i can not open the file in my PC
but i can open the file in gateway server PC
filetype is image

	from wellrain_lib import messageBox
	try:
		# 打开指定路径的文件
		path = self.getSibling("Table").custom.sel_row.path
		name = self.getSibling("Table").custom.sel_row.filename
		f = open(path, mode = "rb")
		file_data = f.read()
		# 执行下载操作
		system.perspective.download(name,file_data,contentType = "multipart/form-data")
		
	except:
		messageBox.errorBox()

the image i downloaded to my PC open like this:

the PDF file i downloaded

[pturmel]

Use the proper contentType for your image. multipart/form-data is for posting a form TO a server, not downloading FROM a server.