上网搜了下Web Api上传文件的功能，发现都写的好麻烦，就自己写了一个，比较简单，直接上传文件就可以，可以用Postman测试。
简单的举例
/// <summary>
/// 超级简单的文件上传
/// </summary>
public class EasyUploadFileController : ApiController
{
/// <summary>
/// 上传文件
/// </summary>
/// <returns></returns>
[HttpPost]
public string PostWithFile()
{
UploadWithFile(HttpContext.Current.Request);
return "文件上传成功";
} /// <summary>
/// 上传文件
/// </summary>
/// <param name="request"></param>
private void UploadWithFile(HttpRequest request)
{
for (int i = ; i < request.Files.Count; i++)
{
var file = request.Files[i];
if (file.ContentLength <= ) continue;
var ext = new FileInfo(file.FileName).Extension;
var fullPath = Path.Combine(@"G:\Image", Path.GetFileName(Guid.NewGuid() + ext));
file.SaveAs(fullPath);
}
} }
结果
复杂举例带参数
public class UploadFileController : ApiController
{
/// <summary>
/// 8M
/// </summary>
public const int MAX_LENGTH = * * ;
public const int MIN_WIDTH = ;
public const int MIN_HEIGHR = ; /// <summary>
/// 上传文件
/// </summary>
/// <returns></returns>
[HttpPost]
public string PostWithFile()
{
JObject jObject = GetParam(HttpContext.Current.Request);
ParamModel model = GetParamModel(jObject); Tuple<bool, string> upload = UploadWithFile(HttpContext.Current.Request);
return upload.Item2 + " 参数：" + JsonConvert.SerializeObject(model);
} /// <summary>
/// 上传文件
/// </summary>
/// <param name="request"></param>
private Tuple<bool, string> UploadWithFile(HttpRequest request)
{
bool success = true;
string message = string.Empty;
for (int i = ; i < request.Files.Count; i++)
{
var file = request.Files[i];
if (file.ContentLength <= ) continue; #region check的代码
if (!FitFileLength(file))
{
message = message + file.FileName + "文件大小不能超过8M;";
continue;
} if (!FitImageSize(file))
{
message = message + file.FileName + "图片长宽分别不能小于600像素;";
continue;
}
#endregion var ext = new FileInfo(file.FileName).Extension;
var fullPath = Path.Combine(@"G:\Image", Path.GetFileName(Guid.NewGuid() + ext));
file.SaveAs(fullPath);
} if (string.IsNullOrEmpty(message))
{
message = "上传成功";
}
Tuple<bool, string> result = new Tuple<bool, string>(success, message);
return result;
} /// <summary>
/// 符合文件大小
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
private bool FitFileLength(HttpPostedFile file)
{
bool result = true;
if (file.ContentLength >= MAX_LENGTH)
{
result = false;
}
return result;
} /// <summary>
/// 符合图片尺寸
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
private bool FitImageSize(HttpPostedFile file)
{
bool result = true;
var ext = new FileInfo(file.FileName).Extension;
if (IsImage(ext))
{
Image image = Image.FromStream(file.InputStream);
if (image.Height <= MIN_HEIGHR || image.Width <= MIN_WIDTH)
{
result = false;
}
} return result;
} /// <summary>
/// 监测是否是图片
/// </summary>
/// <param name="ext"></param>
/// <returns></returns>
public bool IsImage(string ext)
{
bool result = false;
switch (ext.ToLower())
{
case (".jpg"):
case (".png"):
case (".gif"):
case (".bmp"):
result = true;
break;
default:
result = false;
break;
}
return result;
} /// <summary>
/// 获得参数
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
private JObject GetParam(HttpRequest request)
{
JObject jObject = new JObject();
foreach (string key in request.Form)
{
jObject[key] = request.Form[key];
}
return jObject;
} /// <summary>
/// 简单的Model转换
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
private ParamModel GetParamModel(JObject jObject)
{
ParamModel model = new ParamModel();
model.Param1 = jObject["Param1"] != null ? jObject["Param1"].ToString() : "";
model.Param2 = jObject["Param2"] != null ? jObject["Param2"].ToString() : "";
model.Param3 = jObject["Param3"] != null ? jObject["Param3"].ToString() : ""; return model;
}
}
Html测试
<div class="jumbotron">
<form action="/UploadFile/PostWithFile" method="post" enctype="multipart/form-data" class="form-horizontal">
<div class="form-group">
<label for="Param1" class="col-xs-2">Param1</label>
<input type="text" class="form-control col-xs-8" name="Param1" placeholder="Param1">
</div>
<div class="form-group">
<label for="Param2" class="col-xs-2">Param2</label>
<input type="text" class="form-control" name="Param2" placeholder="Param2">
</div>
<div class="form-group">
<label for="Param3" class="col-xs-2">Param3</label>
<input type="text" class="form-control" name="Param3" placeholder="Param3">
</div>
<div class="form-group">
<label for="exampleInputFile" class="col-xs-2">File input</label>
<input type="file" name="f1" />
<input type="file" name="f2" />
<input type="file" name="f3" />
</div>
<button type="submit" class="btn btn-default">上传图片</button>
</form>
</div>
源码
https://github.com/jasonhua95/WebApiUploadFile.git