/// <summary>
/// 上传文件
/// 日期：2016年9月28日
/// </summary>
/// <param name="FileType">文件类型</param>
/// <param name="Directory">文件保存路径</param>
/// <param name="PreMD5">预处理Md5哈希值</param>
/// <returns></returns>
public async Task <ApiResult> Upload(
string FileType = "images",
string Directory = null,
string PreMD5 = "",
string AccessKey = "",
string Name = "")
{
// 检查是否是 multipart/form-data
if (!Request.Content.IsMimeMultipartContent("form-data"))
{
return(EnumApiStatus.BizError.ToApiResultForApiStatus("UnsupportedMediaType"));
}
try
{
//文件存储配置
var config = SysConfigService.Get <XuHos.Common.Config.Sections.IMGStore>();
SysFileIndex fileIndex = null;
//通过缓存来判断文件是否已经上传了
XuHos.Common.Cache.Keys.EntityCacheKey <SysFileIndex> CacheKey;
//预处理文件Hash，客户端进行哈希值计算
if (PreMD5 != "")
{
CacheKey = new XuHos.Common.Cache.Keys.EntityCacheKey <SysFileIndex>(StringCacheKeyType.SysFileIndex, PreMD5);
//缓存中获取文件索引
fileIndex = CacheKey.FromCache();
}
//文件已经存在，则使用妙传（不需要保存直接返回之前已经上传的问题）
if (fileIndex != null)
{
//返回上传结果
return(new ResponseUploadFileDTO
{
UrlPrefix = config.UrlPrefix,
FileName = string.IsNullOrEmpty(Name) ? string.Format("{0}/{1}", FileType, fileIndex.FileUrl) : Name,
MD5 = fileIndex.MD5,
FileSize = fileIndex.FileSize,
FileSeq = fileIndex.MD5,
AccessKey = fileIndex.AccessKey
}.ToApiResultForObject());
}
else
{
var httpPostFile = HttpContext.Current.Request.Files[0];
var FileStream = httpPostFile.InputStream;
var RequestFileName = httpPostFile.FileName;
FileStream.Seek(0, SeekOrigin.Begin);
var FileMD5 = XuHos.Common.Utility.HashHelper.ComputeMD5(FileStream);
//扩展名
var FileUrl = FileMD5 + Path.GetExtension(RequestFileName);
var FileSize = FileStream.Length;
//通过缓存来判断文件是否已经上传了
CacheKey = new XuHos.Common.Cache.Keys.EntityCacheKey <SysFileIndex>(StringCacheKeyType.SysFileIndex, FileMD5);
//缓存中获取文件索引
fileIndex = CacheKey.FromCache();
//文件已经存在
if (fileIndex != null)
{
//返回上传结果
return(new ResponseUploadFileDTO
{
UrlPrefix = config.UrlPrefix,
FileName = string.IsNullOrEmpty(Name) ? string.Format("{0}/{1}", fileIndex.FileType, fileIndex.FileUrl) : Name,
MD5 = fileIndex.MD5,
FileSize = fileIndex.FileSize,
FileSeq = fileIndex.MD5,
AccessKey = fileIndex.AccessKey
}.ToApiResultForObject());
}
//文件不存在的才保存到服务器
else
{
await XuHos.Common.Storage.Manager.Instance.WriteFile(FileType, FileUrl, FileStream);
SysFileIndexService fileService = new SysFileIndexService(CurrentOperatorUserID);
fileIndex = new SysFileIndex()
{
MD5 = FileMD5,
FileType = FileType,
FileUrl = FileUrl,
FileSize = FileSize,
Remark = string.IsNullOrEmpty(Name) ? FileUrl : Name,
AccessKey = AccessKey
};
var result = new ResponseUploadFileDTO
{
UrlPrefix = config.UrlPrefix,
FileName = string.IsNullOrEmpty(Name) ? string.Format("{0}/{1}", FileType, FileUrl) : Name,
MD5 = FileMD5,
FileSize = FileSize,
FileSeq = fileIndex.MD5,
AccessKey = fileIndex.AccessKey
};
var SaveFlag = false;
//文件不存在
if (!fileService.Exists(a => a.MD5 == FileMD5))
{
try
{
//添加记录
SaveFlag = fileService.Insert(fileIndex);
}
//主键冲突异常
catch (ConstraintException ex)
{
SaveFlag = true;
}
}
else
{
fileService.Update(fileIndex);
SaveFlag = true;
}
//保存成功
if (SaveFlag)
{
//设置缓存
fileIndex.ToCache(CacheKey, TimeSpan.FromHours(2));
return(result.ToApiResultForObject());
}
else
{
return(EnumApiStatus.BizError.ToApiResultForApiStatus());
}
}
}
}
catch (Exception ex)
{
string msg = ex.Message;
if (ex.InnerException != null)
{
msg += System.Environment.NewLine + ex.InnerException.Message;
if (ex.InnerException.InnerException != null)
{
msg += System.Environment.NewLine + ex.InnerException.InnerException.Message;
}
}
LogHelper.WriteError(ex);
return(EnumApiStatus.BizError.ToApiResultForApiStatus("上传失败，错误:" + msg));
}
}
public async Task <ApiResult> UploadImageByBase64([FromBody] BLL.Sys.DTOs.Request.RequestUploadImageByBase64DTO request)
{
byte[] byteData = Convert.FromBase64String(request.Content.Replace("data:image/png;base64", ""));
var FileType = "Images";
try
{
//文件存储配置
var config = SysConfigService.Get <XuHos.Common.Config.Sections.IMGStore>();
SysFileIndex fileIndex = null;
var FileStream = new System.IO.MemoryStream(byteData);
var FileMD5 = XuHos.Common.Utility.HashHelper.ComputeMD5(FileStream);
//通过缓存来判断文件是否已经上传了
var CacheKey = new XuHos.Common.Cache.Keys.EntityCacheKey <SysFileIndex>(StringCacheKeyType.SysFileIndex, FileMD5);
//缓存中获取文件索引
fileIndex = CacheKey.FromCache();
//文件已经存在
if (fileIndex != null)
{
//返回上传结果
return(new ResponseUploadFileDTO
{
UrlPrefix = config.UrlPrefix,
FileName = string.Format("{0}/{1}", fileIndex.FileType, fileIndex.FileUrl),
MD5 = fileIndex.MD5,
FileSize = fileIndex.FileSize,
FileSeq = request.FileSeq
}.ToApiResultForObject());
}
//文件不存在的才保存到服务器
else
{
SysFileIndexService fileService = new SysFileIndexService(CurrentOperatorUserID);
//文件不存在
if (fileService.Exists(a => a.MD5 == FileMD5))
{
fileIndex = fileService.Single <SysFileIndex>(a => a.MD5 == FileMD5);
if (fileIndex != null)
{
//设置缓存
fileIndex.ToCache(CacheKey, TimeSpan.FromHours(2));
var result = new ResponseUploadFileDTO
{
UrlPrefix = config.UrlPrefix,
FileName = string.Format("{0}/{1}", fileIndex.FileType, fileIndex.FileUrl),
MD5 = fileIndex.MD5,
FileSize = fileIndex.FileSize,
FileSeq = request.FileSeq
};
return(result.ToApiResultForObject());
}
else
{
return(EnumApiStatus.BizError.ToApiResultForApiStatus());
}
}
else
{
//文件名
var FileUrl = Guid.NewGuid().ToString("N") + ".jpg";
var FileSize = FileStream.Length;
await XuHos.Common.Storage.Manager.Instance.WriteFile(FileType, FileUrl, FileStream);
fileIndex = new SysFileIndex()
{
MD5 = FileMD5,
FileType = FileType,
FileUrl = FileUrl,
FileSize = FileSize,
Remark = "",
AccessKey = string.IsNullOrEmpty(request.AccessKey) ? "" : request.AccessKey
};
var result = new ResponseUploadFileDTO
{
UrlPrefix = config.UrlPrefix,
FileName = string.Format("{0}/{1}", FileType, FileUrl),
MD5 = FileMD5,
FileSize = FileSize,
FileSeq = request.FileSeq,
AccessKey = request.AccessKey
};
var SaveFlag = false;
//文件不存在
if (!fileService.Exists(a => a.MD5 == FileMD5))
{
try
{
//添加记录
SaveFlag = fileService.Insert(fileIndex);
}
//主键冲突异常
catch (ConstraintException ex)
{
SaveFlag = true;
}
}
else
{
SaveFlag = true;
}
//保存成功
if (SaveFlag)
{
//设置缓存
fileIndex.ToCache(CacheKey, TimeSpan.FromHours(2));
return(result.ToApiResultForObject());
}
else
{
return(EnumApiStatus.BizError.ToApiResultForApiStatus());
}
}
}
}
catch (Exception ex)
{
string msg = ex.Message;
if (ex.InnerException != null)
{
msg += System.Environment.NewLine + ex.InnerException.Message;
if (ex.InnerException.InnerException != null)
{
msg += System.Environment.NewLine + ex.InnerException.InnerException.Message;
}
}
LogHelper.WriteError(ex);
return(EnumApiStatus.BizError.ToApiResultForApiStatus("上传失败，错误:" + msg));
}
}
