Study on Large File Asynchronous Uploading Technology Base on XML and ADODB

Abstract

Large file uploading is a problem often occurs in Web applications. Existing uploading components does not support Resume-broken-transfer while most of them cannot display uploading progress, also Cross-platform compatibility is not very well. This paper adopts Fragments-access, Asynchronous-uploading strategy, implements large file Resume-broken-transfer using ADODB.Stream and XMLHttp, obtains higher rates of transmission and real-time display of uploading progress and good Cross-platform compatibility, meets the large file uploading needs in web applications.