content-type收集

case "doc": ContentType = "application/msword"; bre

case "doc":
                    ContentType = "application/msword";
                    break;
                case "pdf":
                    ContentType = "application/pdf";
                    break;
                case "jpg":
                case "jpeg":
                    ContentType = "image/jpeg";
                    break;
                case "gif":
                    ContentType = "image/gif";
                    break;          
                case "zip":
                    ContentType = "application/zip";
                    break;
                case "txt":
                    ContentType = "text/plain";
                    break;
                case "htm":
                case "html":
                    ContentType = "text/html";
                    break;             
                case "xls":
                    ContentType = "application/vnd.ms-excel";
                    break;
                case "ppt":
                    ContentType = "application/vnd.ms-powerpoint";
                    break;
                default:
                    ContentType = "application/octet-stream";
                    break;