webapi上传图片的两种方式

/// <summary>

/// App上传图片

/// </summary>

/// <returns>返回上传图片的相对路径</returns>

[HttpPost]

public AppReturn<string> UploadImage()

{

AppReturn<string> rModel = new AppReturn<string>();

//string result = "";

// 检查是否是 multipart/form-data

if (!Request.Content.IsMimeMultipartContent("form-data"))

{

InvestmentCommon.Log4NetHelper.Log.Error("不是有效的'form-data'类型");

rModel.state = 0;

rModel.msg = "不是有效的'form-data'类型";

return rModel;

}

DateTime dt = DateTime.Now;

string path = string.Format("/imagestore/{0}/{1}{2}", dt.Year, dt.Month.ToString().PadLeft(2, '0'), dt.Day.ToString().PadLeft(2, '0'));

string abtPath = HttpContext.Current.Server.MapPath(path);

if (!InvestmentCommon.FileHelper.CreateDirectory(abtPath))

{

InvestmentCommon.Log4NetHelper.Log.Error(string.Format("创建目录{0}失败", abtPath));

rModel.state = 0;

rModel.msg = "创建图片目录失败";

return rModel;

}

string fileName = "";

string ext = "";

string filePath = "";

try

{

HttpContextBase context = (HttpContextBase)Request.Properties["MS_HttpContext"];//获取传统context

HttpRequestBase request = context.Request;//定义传统request对象

HttpFileCollectionBase imgFiles = request.Files;

for (int i = 0; i < imgFiles.Count; i++)

{

ext = InvestmentCommon.FileHelper.GetExtention(imgFiles[i].FileName);

fileName = string.Format("{0}{1}", System.Guid.NewGuid().ToString(), ext);

filePath = string.Format("{0}/{1}", path, fileName);

imgFiles[i].SaveAs(abtPath + "\\" + fileName);

imgFiles[i].InputStream.Position = 0;

rModel.data = filePath.Replace("/", "");

rModel.state = 1;

rModel.msg = "success";

}

}

catch (Exception e)

{

InvestmentCommon.Log4NetHelper.Log.Error("图片保存失败");

rModel.state = 0;

rModel.msg = "图片保存失败";

return rModel;

}

//result = Newtonsoft.Json.JsonConvert.SerializeObject(rList);

return rModel;

}

/// <summary>

/// App上传图片

/// </summary>

/// <returns>返回上传图片的相对路径</returns>

[HttpPost]

public AppReturn<string> UploadImageByBase64(FileUp file)

{

AppReturn<string> rModel = new AppReturn<string>();

if (string.IsNullOrEmpty(file.FileBase64))

{

InvestmentCommon.Log4NetHelper.Log.Error("没有选择要上传的图片");

rModel.state = 0;

rModel.msg = "没有选择要上传的图片";

return rModel;

}

DateTime dt = DateTime.Now;

string path = string.Format("/imagestore/{0}/{1}{2}", dt.Year, dt.Month.ToString().PadLeft(2, '0'), dt.Day.ToString().PadLeft(2, '0'));

string abtPath = HttpContext.Current.Server.MapPath(path);

if (!InvestmentCommon.FileHelper.CreateDirectory(abtPath))

{

InvestmentCommon.Log4NetHelper.Log.Error(string.Format("创建目录{0}失败", abtPath));

rModel.state = 0;

rModel.msg = "创建图片目录失败";

return rModel;

}

string fileName = "";

string filePath = "";

try

{

byte[] imgByte = Convert.FromBase64String(file.FileBase64);

MemoryStream ms = new MemoryStream(imgByte);

Image image = System.Drawing.Image.FromStream(ms);

fileName = string.Format("{0}.png", System.Guid.NewGuid().ToString());

filePath = string.Format("{0}/{1}", path, fileName);

image.Save(abtPath + "\\" + fileName);

rModel.data = filePath.Replace("/", "");

rModel.state = 1;

rModel.msg = "success";

ms.Close();

ms.Dispose();

}

catch (Exception e)

{

InvestmentCommon.Log4NetHelper.Log.Error("图片保存失败");

rModel.state = 0;

rModel.msg = "图片保存失败";

return rModel;

}

return rModel;

}