/// <summary>
/// 上传计划附件
/// </summary>
/// <param name="UpFileInfo">该文件信息</param>
/// <param name="PostFileStream">该文件流</param>
/// <param name="PostFileKey">供服务器索引使用的Key。如服务器不使用之，可以为空</param>
/// <param name="PostFileName">用于告诉服务器指定文件的名称。如服务器不使用之，可以为空</param>
/// <param name="showUploadProgress">上传进度</param>
/// <returns></returns>
public static async Task <ExcuteResult> UpLoadFileInfo(Lib.PlanFileEntity UpFileInfo, Stream PostFileStream, string PostFileKey = null, string PostFileName = null, ProgressMessageHandler showUploadProgress = null)
{
MultipartFormDataContent V_MultFormDatas = DataApiRepository.SetFormData(UpFileInfo, PostFileStream, PostFileKey, PostFileName);
ExcuteResult JsonResult = await DataApiRepository.PostApiUriAsync(_ApiUrlBase + "PlanFile/UpLoadFile", V_MultFormDatas, showUploadProgress).ConfigureAwait(false);
return(JsonResult);
}
/// <summary>
/// 下载文件。成功：返回下载后的文件名及路径，失败：返回null
/// </summary>
/// <param name="WillDownFile">将下载的文件信息</param>
/// <param name="ReDownLoad">是否重新下载，默认为false</param>
/// <param name="showDownProgress">显示下载进度的委托方法,可为空</param>
/// <returns>返回下载成功的文件目录（包括路径）</returns>
public static async Task <string> DownloadFile(Lib.PlanFileEntity WillDownFile, bool ReDownLoad = false, ProgressMessageHandler showDownProgress = null)
{
//合成目录
string tempFileDir = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "DownFiles", WillDownFile.ContentType);
//合成目录+文件
string tempFilePath = System.IO.Path.Combine(tempFileDir, WillDownFile.Name + "(" + WillDownFile.Id + ")" + WillDownFile.ExtendName);
if (!File.Exists(tempFilePath) || ReDownLoad)
{
HttpResponseMessage httpResponseMessage = await DataApiRepository.GetApiUri <HttpResponseMessage>(_ApiUrlBase + @"PlanFile/DownloadFile/" + WillDownFile.Id, showDownProgress).ConfigureAwait(false);
if (httpResponseMessage != null && httpResponseMessage.StatusCode != System.Net.HttpStatusCode.NotFound)
{
Stream responseStream = await httpResponseMessage.Content.ReadAsStreamAsync().ConfigureAwait(false);
//以上两句代码不能用下一句代替，否则进度报告出现卡顿。
//Stream responseStream = await DataApiRepository.GetApiUri<Stream>(AppSettings.ApiUrlBase + @"FileDown/" + WillDownFile.Id, showDownProgress);
if (responseStream != null && responseStream.Length > 0)
{
if (!System.IO.Directory.Exists(tempFileDir))
{
//创建目录
System.IO.Directory.CreateDirectory(tempFileDir);
}
//创建一个文件流
FileStream fileStream = new FileStream(tempFilePath, FileMode.Create);
//await responseStream.CopyToAsync(fileStream);
byte[] buffer = new byte[2048];
int readLength;
while ((readLength = await responseStream.ReadAsync(buffer, 0, buffer.Length)) != 0)
{
// 写入到文件
fileStream.Write(buffer, 0, readLength);
}
responseStream.Close();
fileStream.Close();
}
}
}
if (File.Exists(tempFilePath))
{
return(tempFilePath);
}
else
{
return(null);
}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="DelFile">预删除的文件</param>
/// <returns></returns>
public static async Task <ExcuteResult> DeleteFileInfo(Lib.PlanFileEntity DelFile)
{
ExcuteResult JsonResult = await DataApiRepository.DeleteApiUri <ExcuteResult>(_ApiUrlBase + "PlanFile/?FileId=" + DelFile.Id).ConfigureAwait(false);
return(JsonResult);
}
/// <summary>
/// 更新文件信息（采用PUT）
/// </summary>
/// <param name="UpdatePlan"></param>
/// <returns></returns>
public static async Task <ExcuteResult> UpdateFileInfo(Lib.PlanFileEntity PEntity)
{
ExcuteResult JsonResult = await DataApiRepository.PutApiUriAsync(_ApiUrlBase + "PlanFile", PEntity).ConfigureAwait(false);
return(JsonResult);
}
