保存本地
/// <summary>
/// 上传文件
/// </summary>
/// <returns></returns>
[HttpPost]
public JsonResult UploadFile()
{
HttpFileCollection files = System.Web.HttpContext.Current.Request.Files;
string path = "";
var fileEntitys = new List<FileEntity>();
for (int i = 0; i < files.Count; i++)
{
string md5 = FileHelper.GetMD5WithFile(files[i]);
path = FileHelper.SaveFile(files[i], UniAppVersionUpPath, md5);
if (string.IsNullOrWhiteSpace(path))
{
return Json("找不到路径", JsonRequestBehavior.AllowGet);
}
fileEntitys.Add(new FileEntity() { Md5 = md5, Path = path });
}
var fpath = fileEntitys.FirstOrDefault();
return Json(new { path = fpath.Path, md5 = fpath.Md5 }, JsonRequestBehavior.AllowGet);
}
/// <summary>
/// 保存文件
/// </summary>
/// <param name="file">文件</param>
/// <param name="catalog">文件位置</param>
/// <param name="fileName">文件名称</param>
/// <returns></returns>
public static string SaveFile(HttpPostedFile file, string catalog, string fileName)
{
if (file.ContentLength != 0)
{
string absolutePath = HttpContext.Current.Server.MapPath(catalog);
if (!Directory.Exists(absolutePath))
{
Directory.CreateDirectory(absolutePath);
}
string fileExten = Path.GetExtension(file.FileName);
fileName += fileExten;
string fullAbsolutePath = Path.Combine(absolutePath, fileName);
file.SaveAs(fullAbsolutePath);
if (!catalog.EndsWith("/"))
catalog = catalog + "/";
return catalog + fileName;
}
return null;
}
<add key="UniAppVersionUpPath" value="/File/UniAppVersionUpPath/" />
FTP
情况1：服务器禁止外网访问
（为了方便本地测试，单独在服务器发布一个接口。如果测试好了，觉得不想这么麻烦，就用情况2的）
/// <summary>
/// 上传文件（只能单个上传，超过2个以上目前有问题）
/// </summary>
/// <param name="name">模块名称</param>
/// <returns></returns>
[HttpPost]
[Route("UploadFile")]
public async Task<IHttpActionResult> UploadFile(string name)
{
HttpFileCollection files = HttpContext.Current.Request.Files;
FailResult f = new FailResult();
if (files.Count == 0)
{
f = ToolHelper.GetFailResult(Code.NoFile);
return Json(f);
}
var fileEntity = new FileEntity();
if (files.Count > 10)
{
f = ToolHelper.GetFailResult(Code.FileExcessNumber);
return Json(f);
}
List<FileModel> list = new List<FileModel>();
for (int i = 0; i < files.Count; i++)
{
string yourMd5 = files.AllKeys[i].ToLower();
fileEntity = FileHelper.FtpObject(files[i], name, yourMd5);
if (fileEntity == null)
{
f = ToolHelper.GetFailResult(Code.NoFile);
return Json(f);
}
list.Add(new FileModel() { Md5 = fileEntity.Md5, Path = fileEntity.Path });
}
return Json(list);
}
public class FileModel
{
public string Md5 { get; set; }
public string Path { get; set; }
}
private static string BaseHost = ConfigurationManager.AppSettings["BaseHost"].ToString();
/// <summary>
/// ftp上传对象
/// </summary>
/// <param name="file"></param>
/// <param name="catalog">文件路径例如 /1/</param>
/// <returns></returns>
public static FileEntity FtpObject(HttpPostedFile file, string catalog, string fileName)
{
if (file.ContentLength != 0)
{
var url = BaseHost+"/File/UploadFile?name=" + catalog+ "&md5="+ fileName+ "&suffix=" + Path.GetExtension(file.FileName);
try
{
using (var ms = new MemoryStream())
{
var client = new HttpClient();
var content = new MultipartFormDataContent();
byte[] bytes = GetbyteByHttpPostedFile(file);
content.Add(new ByteArrayContent(bytes), "file", fileName);
ms.Close();
var result = client.PostAsync(url, content).Result.Content.ReadAsStringAsync().Result;//post请求
var resultWords = JsonConvert.DeserializeObject<List<FileEntity>>(result);
if (string.IsNullOrWhiteSpace(resultWords[0].Path))
{
return null;
}
return resultWords[0];
}
}
catch (Exception ex)
{
return null;
}
}
return null;
}
/// <summary>
/// 下载多个文件，返回临时地址
/// </summary>
/// <returns></returns>
public static ImgDataModel GetImgObject(string keys, string query = "?x-image-process=image/resize,w_400,limit_0", int minutes = 240)
{
var resultWords = new ImgDataModel();
try
{
var keyslist = keys.Split(',').ToList();
keyslist.Remove("");
var serurl = BaseHost + "File/";
var imgUrlModels = new List<ImgUrlModel>();
foreach (var item in keyslist)
{
var imgUrlModel = new ImgUrlModel()
{
url = serurl + item,
urlWithQuery = serurl + item,
time = DateTime.Now.ToString("yyyy-MM-dd")
};
imgUrlModels.Add(imgUrlModel);
}
resultWords.code = 200;
resultWords.message = "成功";
resultWords.data = imgUrlModels;
return resultWords;
}
catch (Exception ex)
{
return resultWords;
}
}
public class ImgDataModel
{
public int code { get; set; }
public string message { get; set; }
public List<ImgUrlModel> data { get; set; }
}
public class ImgUrlModel
{
/// <summary>
/// 全图
/// </summary>
public string url { get; set; }
/// <summary>
/// 缩略图
/// </summary>
public string urlWithQuery { get; set; }
public string time { get; set; }
}
public class ObsKeyModel
{
public int code { get; set; }
public string message { get; set; }
public DataModel data { get; set; }
}
public class DataModel
{
public HeadersModel headers { get; set; }
public string url { get; set; }
}
public class HeadersModel
{
public string Authorization { get; set; }
public string date { get; set; }
public string Host { get; set; }
}
另外一个服务器的代码
/// <summary>
/// 上传文件
/// </summary>
/// <param name="name">模块名称</param>
/// <param name="md5">MD5</param>
/// <param name="name">文件后缀</param>
/// <returns></returns>
[HttpPost]
[Route("UploadFile")]
public async Task<IHttpActionResult> UploadFile(string name, string md5, string suffix)
{
HttpFileCollection files = HttpContext.Current.Request.Files;
if (files.Count == 0)
{
return Json("文件不能为空");
}
string path = "";
List<FileModel> list = new List<FileModel>();
for (int i = 0; i < files.Count; i++)
{
//string md5 = FileHelper.GetMD5WithFile(files[i]);
//string yourMd5 = files.AllKeys[i].ToLower();
path = FileHelper.SaveImage(files[i], name, md5, suffix);
list.Add(new FileModel() { Md5 = md5, Path = path });
}
return Json(list);
}
public static string GetMD5WithFile(HttpPostedFile file)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] hash_byte = md5.ComputeHash(file.InputStream);
string str = System.BitConverter.ToString(hash_byte);
str = str.Replace("-", "");
return str.ToLower();
}
/// <summary>
/// 由于接受到的图片没有后缀名，加上 .jpg
/// </summary>
/// <param name="file"></param>
/// <param name="catalog"></param>
/// <param name="fileName"></param>
/// <param name="suffix"></param>
/// <returns></returns>
public static string SaveImage(HttpPostedFile file, string catalog, string fileName, string suffix)
{
if (file.ContentLength != 0)
{
string fileUrl = "/File/";
catalog = catalog + "/" + DateTime.Now.ToString("yyyy-MM-dd");
if (!catalog.EndsWith("/"))
catalog = catalog + "/";
string absolutePath = HttpContext.Current.Server.MapPath(fileUrl + catalog);
if (!Directory.Exists(absolutePath))
{
Directory.CreateDirectory(absolutePath);
}
//string fileExten = Path.GetExtension(file.FileName);
string fileExten = suffix;
if (string.IsNullOrWhiteSpace(fileExten))
{
fileName += ".jpg";
}
fileName += fileExten;
string fullAbsolutePath = Path.Combine(absolutePath, fileName);
file.SaveAs(fullAbsolutePath);
return catalog + fileName;
}
return null;
}
public class FileModel
{
public string Md5 { get; set; }
public string Path { get; set; }
}
情况2：服务器不禁止外网访问
//根据路径获取物理路径
var folder = Server.MapPath(model.fullPath);
//获取绝对路径
var fullPath2 = Path.GetFullPath(folder);
var resultrMsg = FtpHelper.FtpUpload(fullPath2);
public class FtpHelper
{
private static string ftpServerIP = ConfigurationManager.AppSettings["FtpUniAppServerIP"].ToString();
private static string ftpUserID = ConfigurationManager.AppSettings["FtpUniAppUserID"].ToString();
private static string ftpPassword = ConfigurationManager.AppSettings["FtpUniAppPassword"].ToString();
private static string FtpUniAppPath = ConfigurationManager.AppSettings["FtpUniAppPath"].ToString();
private static string UniAppVersion = ConfigurationManager.AppSettings["UniAppVersion"].ToString();
/// <summary>
/// 上传文件
/// </summary>
/// <param name="localFile">文件</param>
/// <returns></returns>
public static string FtpUpload(string localFile)
{
//检查目录是否存在，不存在创建
var ftpPath = FtpUniAppPath + "/";
FtpCheckDirectoryExist(ftpPath);
try
{
FileInfo fileInf = new FileInfo(localFile);
string uri = string.Format("ftp://{0}/{1}{2}", ftpServerIP, ftpPath, UniAppVersion);
FtpWebRequest reqFTP;
// 根据uri创建FtpWebRequest对象
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
// ftp用户名和密码
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
// 默认为true，连接不会被关闭
// 在一个命令之后被执行
reqFTP.KeepAlive = false;
// 指定执行什么命令
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
// 指定数据传输类型
reqFTP.UseBinary = true;
// 上传文件时通知服务器文件的大小
reqFTP.ContentLength = fileInf.Length;
reqFTP.UsePassive = false;//只需要添加这一句话
// 缓冲大小设置为2kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
// 打开一个文件流 (System.IO.FileStream) 去读上传的文件
FileStream fs = fileInf.OpenRead();
// 把上传的文件写入流
Stream strm = reqFTP.GetRequestStream();
// 每次读文件流的2kb
contentLen = fs.Read(buff, 0, buffLength);
// 流内容没有结束
while (contentLen != 0)
{
// 把内容从file stream 写入 upload stream
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
// 关闭两个流
strm.Close();
fs.Close();
}
catch (Exception e)
{
return e.Message;
}
return "";
}
//判断文件的目录是否存,不存则创建
public static void FtpCheckDirectoryExist(string destFilePath)
{
string fullDir = FtpParseDirectory(destFilePath);
string[] dirs = fullDir.Split('/');
string curDir = "/";
for (int i = 0; i < dirs.Length; i++)
{
string dir = dirs[i];
//如果是以/开始的路径,第一个为空
if (dir != null && dir.Length > 0)
{
try
{
curDir += dir + "/";
FtpMakeDir(curDir);
}
catch (Exception ex)
{
}
}
}
}
public static string FtpParseDirectory(string destFilePath)
{
return destFilePath.Substring(0, destFilePath.LastIndexOf("/"));
}
//创建目录
public static Boolean FtpMakeDir(string localFile)
{
string uri = string.Format("ftp://{0}{1}", ftpServerIP, localFile);
FtpWebRequest req = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
req.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
req.Method = WebRequestMethods.Ftp.MakeDirectory;
try
{
FtpWebResponse response = (FtpWebResponse)req.GetResponse();
response.Close();
}
catch (Exception)
{
req.Abort();
return false;
}
req.Abort();
return true;
}
}
<add key="FtpUniAppServerIP" value="127.0.0.1" />
<add key="FtpUniAppUserID" value="FtpUserttt" />
<add key="FtpUniAppPassword" value="Ftp1234567897" />
<add key="FtpUniAppPath" value="UniAppTest" />
云服务
（1）上传方法
/// <summary>
/// 上传文件（单个上传，可以执行修改成多个上传）
/// </summary>
/// <param name="name">模块名称</param>
/// <returns></returns>
[HttpPost]
[Route("UploadFile")]
public async Task<IHttpActionResult> UploadFile(string name)
{
HttpFileCollection files = HttpContext.Current.Request.Files;
FailResult f = new FailResult();
if (files.Count == 0)
{
f = ToolHelper.GetFailResult(Code.NoFile);
return Json(f);
}
string path = "";
List<FileModel> list = new List<FileModel>();
if (files.Count > 10)
{
f = ToolHelper.GetFailResult(Code.FileExcessNumber);
return Json(f);
}
for (int i = 0; i < files.Count; i++)
{
string yourMd5 = files.AllKeys[i].ToLower();
path = FileHelper.PostObject(files[i], name, yourMd5);
if (string.IsNullOrWhiteSpace(path))
{
f = ToolHelper.GetFailResult(Code.NoFile);
return Json(f);
}
list.Add(new FileModel() { Md5 = yourMd5, Path = path });
}
return Json(list);
}
public class FileModel
{
public string Md5 { get; set; }
public string Path { get; set; }
}
（2）查看图片
var Item6Img = data.SetRemarkImage == "" ? new List<string>() : data.SetRemarkImage.SplitNew(',').Select(u => StaticConstant.BaseHost + u).ToList();
（3）调到方法FileHelper
public class FileHelper
{
private static ILog Logger = LogManager.GetLogger(nameof(FileHelper));
private static string UploadFileUrlPath = ConfigurationManager.AppSettings["UploadFileUrlPath"].ToString();
/// <summary>
/// put 上传单个文件，返回临时密钥
/// </summary>
/// <returns></returns>
public static ObsKeyModel PutObject(string md5)
{
var resultWords = new ObsKeyModel();
try
{
var url = $"{UploadFileUrlPath}/Obs/" + md5;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "PUT";
request.ContentType = "application/json";
request.ContentLength = 0;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
var result = reader.ReadToEnd();
resultWords = JsonConvert.DeserializeObject<ObsKeyModel>(result);
return resultWords;
}
}
catch (Exception ex)
{
return resultWords;
}
}
/// <summary>
/// Post 上传对象
/// </summary>
/// <param name="fileName"></param>
/// <param name="catalog">文件路径例如 /1/</param>
/// <param name="file"></param>
/// <returns></returns>
public static string PostObject(HttpPostedFile file, string catalog, string fileName)
{
if (file.ContentLength != 0)
{
if (!catalog.EndsWith("/"))
catalog = catalog + "/";
catalog = catalog + DateTime.Now.ToString("yyyy-MM-dd") + "/";
string fileExten = Path.GetExtension(file.FileName);
if (string.IsNullOrWhiteSpace(fileExten))
{
fileName += ".jpg";
}
fileName += fileExten;
fileName = catalog + fileName;
var url = $"{UploadFileUrlPath}/Obs/{HttpUtility.UrlEncode(fileName)}";
try
{
using (var ms = new MemoryStream())
{
var client = new HttpClient();
var content = new MultipartFormDataContent();
byte[] bytes = GetbyteByHttpPostedFile(file);
content.Add(new ByteArrayContent(bytes), "file", fileName);
ms.Close();
var result = client.PostAsync(url, content).Result.Content.ReadAsStringAsync().Result;//post请求
var resultWords = JsonConvert.DeserializeObject<SuccessResult>(result);
if (resultWords.Code == 0)
{
return null;
}
return fileName;
}
}
catch (Exception ex)
{
return null;
}
}
return null;
}
/// <summary>
/// 下载多个文件，返回临时地址
/// </summary>
/// <returns></returns>
public static ImgDataModel GetImgObject(string keys, string query = "?x-image-process=image/resize,w_400,limit_0", int minutes = 240)
{
var resultWords = new ImgDataModel();
try
{
var url = $"{UploadFileUrlPath}/Obs";
var client = new HttpClient();
var keyslist = keys.Split(',').ToList();
keyslist.Remove("");
var param = new
{
keys = keyslist,
query = query,
minutes = minutes
};
var jStr = JsonConvert.SerializeObject(param);
StringContent stringContent = new StringContent(jStr);
stringContent.Headers.ContentType = new MediaTypeHeaderValue("application/json") { CharSet = "utf-8" };
var result = client.PostAsync(url, stringContent).Result;//post请求
var result2 = result.Content.ReadAsStringAsync().Result;
resultWords = JsonConvert.DeserializeObject<ImgDataModel>(result2);
return resultWords;
}
catch (Exception ex)
{
return resultWords;
}
}
/// <summary>
/// 根据文件返回二进制
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
public static byte[] GetbyteByHttpPostedFile(HttpPostedFile file)
{
var stream = file.InputStream;
var readBuffer = new byte[stream.Length];
stream.Read(readBuffer, 0, readBuffer.Length);
stream.Seek(0, SeekOrigin.Begin);
return readBuffer;
}
public static string getFileBase64(string fileName)
{
FileStream filestream = new FileStream(fileName, FileMode.Open);
byte[] arr = new byte[filestream.Length];
filestream.Read(arr, 0, (int)filestream.Length);
string baser64 = Convert.ToBase64String(arr);
filestream.Close();
return baser64;
}
}
public class ImgDataModel
{
public int code { get; set; }
public string message { get; set; }
public List<ImgUrlModel> data { get; set; }
}
public class ImgUrlModel
{
/// <summary>
/// 全图
/// </summary>
public string url { get; set; }
/// <summary>
/// 缩略图
/// </summary>
public string urlWithQuery { get; set; }
public string time { get; set; }
}
public class ObsKeyModel
{
public int code { get; set; }
public string message { get; set; }
public DataModel data { get; set; }
}
public class DataModel
{
public HeadersModel headers { get; set; }
public string url { get; set; }
}
public class HeadersModel
{
public string Authorization { get; set; }
public string date { get; set; }
public string Host { get; set; }
}
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