使用java实现多线程下载，包含断点续传。-use multi-threaded download, including HTTP.

图片、文件上穿 uploadpicture 上传图片 uploadfile 上传文件 上传的图片可以盖文字或图片水印 -Pictures, documents uploadpicture upload a picture wearing uploadfile Upload file uploaded picture can cover the text or image watermark

if (move_uploaded_file($_FILES[ userfile ][ tmp_name ], $uploadfile))