下載比較簡單，只要有個網頁路徑就行 網頁路徑示例：http://192.168.1.21:8013/Data/LocationSystem.exe
但是上傳不行，客戶端上傳之後，服務端需要設置接收方法。把接收數據保存到服務端
在IIS上掛載一個網站，裏面鏈接到我們上傳下載的文件夾
URI:http://192.168.1.21:8013/Data 本地路徑：C:\Users\Administrator\Desktop\網頁所在文件夾\Data
1.客戶端
項目內使用了BestHttpPro插件，所以默認用了這個插件，去實現上傳和下載的功能
A.使用BestHttp下載文件：
[ContextMenu("Download")]
public void StartDownload()
{
var request = new HTTPRequest(new System.Uri("http://192.168.1.21:8013/Data/LocationSystem.exe"), (req, resp) => {
//下載完成之後執行
List<byte[]> fragments = resp.GetStreamedFragments();
// 把下載的文件保存到E盤根目錄
using (FileStream fs = new FileStream(@"E:\LocationSystem1.exe", FileMode.Append))
foreach (byte[] data in fragments) fs.Write(data, 0, data.Length);
if (resp.IsStreamingFinished) Debug.Log("Download finished!");
});
request.UseStreaming = true;
request.StreamFragmentSize = 1 * 1024 * 1024;// 1 megabyte
request.DisableCache = true;// already saving to a file, so turn off caching
request.OnProgress = OnLoadProgress;
request.Send();
}
//下載進度
void OnLoadProgress(HTTPRequest request, int download, int length)
{
float progressPercent = (download / (float)length) * 100.0f;
Debug.Log("Download: " + progressPercent.ToString("F2") + "%");
}
B:使用BestHttp上傳文件：
[ContextMenu("UploadRawData")]
public void UploadSecond()
{
StartCoroutine(UploadFiles());
}
public IEnumerator UploadFiles()
{
string serverUrl = "http://localhost:8733/api/fileTransfer/uploadFiles";
var request = new HTTPRequest(new System.Uri(serverUrl), HTTPMethods.Post, OnFinished);
string fileName = @"E:\xxx.txt";
byte[] data = FileContent(fileName);
string fileName2 = @"E:\LocationSystem1.exe";
byte[] data2 = FileContent(fileName2);
request.AddBinaryData("BigFile", data, "xxxttttt1.txt");
request.AddBinaryData("BigFile", data2, "xxxeeeeee2.exe");
request.SetHeader("Content-Type", "application/octet-stream");
request.OnUploadProgress = OnUploadProgress;
request.DisableCache = true;
request.Send();
yield return null;
}
void OnFinished(HTTPRequest originalRequest, HTTPResponse response)
{
Debug.Log("finished...");
Debug.Log("Response:"+response.DataAsText);
}
void OnUploadProgress(HTTPRequest request, long uploaded, long length)
{
float progressPercent = (uploaded / (float)length) * 100.0f;
Debug.Log("Uploaded: " + progressPercent.ToString("F2") + "%");
}
C:使用UnityWebRequest上傳文件（對應的，也可以使用這個下載文件）
[ContextMenu("PostWebapi")]
public void StartPost()
{
StartCoroutine(PostObject("http://localhost:8733/api/fileTransfer/uploadFiles", null, null));
}
public IEnumerator PostObject(string url, Action callback, Action<string> errorCallback)
{
string[] path = new string[2];
path[0] = @"E:\ZTest\xxx.txt";
path[1] = @"E:\ZTest\xxxeee.txt";
WWWForm form = new WWWForm();
for (int i = 0; i < path.Length; i++)
{
byte[] uploadData = FileContent(path[i]);
form.AddBinaryData("files[]", uploadData, Path.GetFileName(path[i]));
}
using (UnityWebRequest www = UnityWebRequest.Post(url, form))
{
yield return www.SendWebRequest();
if (www.isNetworkError || www.isHttpError)
{
Debug.Log("錯誤:www.error =>" + www.error);
if (errorCallback != null)
{
errorCallback(www.error);
}
}
else
{
// Show results as text
string results = www.downloadHandler.text;
Debug.Log("Result:" + results);
if (callback != null) callback();
}
}
}
上面兩種上傳的方式，都用下面的方法，把文件讀取成byte[]
private byte[] FileContent(string fileName)
{
using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
try
{
byte[] buffur = new byte[fs.Length];
fs.Read(buffur, 0, (int)fs.Length);
return buffur;
}
catch (Exception ex)
{
throw ex;
}
}
}
2.服務端
服務端接收客戶端上傳的文件，需要設置一下最大接收Size。否則在傳輸大文件時，WeApi接收方法不會觸發
設置如下：
找到啓動WebApi的代碼，設置MaxBufferSize和MaxRecievedMessageSize(這兩個默認只有幾十兆)
如果是.net 做的網頁，去web.Config裏設置，這一類能搜到很多資料。想反，我們在wpf中使用webapi傳輸數據的，資料還少點。
上面的設置完成後，新建一個FileTransferController用於接收客戶端傳輸的文件
[RoutePrefix("api/fileTransfer")]
public class FileTransferController : ApiController
{
private string saveDirectoryPath = "";
[Route("uploadFiles")]
[HttpPost]
public IHttpActionResult GetUploadFile()
{
//把文件保存路徑放在了App.config文件中了。打包後也可以動態修改。
//如果只是測試，給個默認路徑saveDirectoryPath =@"E:\yourSaveDirectory"
if(string.IsNullOrEmpty(saveDirectoryPath))
{
//去除路徑前後空格
saveDirectoryPath = AppSetting.FileTransferSaveDirctory.Trim();
//去除文件夾最後的\ 例如：E:\SaveTest\==》 E:\SaveTest
if (!string.IsNullOrEmpty(saveDirectoryPath) && saveDirectoryPath.EndsWith(@"\"))
{
saveDirectoryPath = saveDirectoryPath.Remove(saveDirectoryPath.Length - 1);
}
}
//判斷文件夾是否存在
if (Directory.Exists(saveDirectoryPath) == false)
{
//創建用於存圖片的文件夾
Directory.CreateDirectory(saveDirectoryPath);
}
//準備接收文件
var provider = new MultipartMemoryStreamProvider();
IEnumerable<HttpContent> parts = null;
//異步
Task.Factory.StartNew(() => parts = Request.Content.ReadAsMultipartAsync().Result.Contents, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default).Wait();
foreach (var item in parts)
{
//判斷是否有文件
if (item.Headers.ContentDisposition.FileName == null)
continue;
var ms = item.ReadAsStreamAsync().Result;
using (var br = new BinaryReader(ms))
{
if (ms.Length <= 0)
break;
var data = br.ReadBytes((int)ms.Length);
//FileName對應客戶端AddBinaryData中的FileName
string fileName = item.Headers.ContentDisposition.FileName.Replace("\"", "");
string newPath = saveDirectoryPath+@"\"+ fileName;
if (File.Exists(newPath)) newPath = GetFileSavePath(1,newPath);
File.WriteAllBytes(newPath, data);
}
}
return Json<dynamic>(new { Result = "Data upload success!" });
}
/// <summary>
/// 如有重複文件，則後綴+(1) locaiton.sql->location(1).sql
/// </summary>
/// <param name="currentIndex"></param>
/// <param name="filePath"></param>
/// <param name="suffixName"></param>
/// <returns></returns>
private static string GetFileSavePath(int currentIndex, string filePath)
{
try
{
string infoName = string.Format("{0}({1})",Path.GetFileNameWithoutExtension(filePath),currentIndex);
string fileName = string.Format(@"{0}\{1}{2}", Path.GetDirectoryName(filePath), infoName ,Path.GetExtension(filePath));
if (File.Exists(fileName))
{
currentIndex++;
return GetFileSavePath(currentIndex, filePath);
}
else
{
return fileName;
}
}catch(Exception e)
{
Log.Info("FileTransferController.Exception:"+e.ToString());
return filePath;
}
}
}
下載時碰到的問題：
像後綴名爲 .unitypackage 這樣的文件，下載時會報404 not found 錯誤。原因是這種類型的後綴，沒在網頁mimeType中添加。
解決方案：
1.在ＩＩＳ中，找到對應網站，點擊新增mimeType. 擴展名設置 *（*號代表支持任何文件） ，mimeType設置成 application/octet-stream；
2.如果不想讓網頁支持所有後綴，可以使用代碼，去單獨註冊後綴
之前找資料，給的網站Index 都默認爲1 .後面找到根據網站名稱，獲取對應index的方法。
下面代碼，需要在nguget管理中，添加 System.DirectoryServices.dll
IISOle，需要右鍵引用-添加服務引用，找到Com類庫，添加 ActiveDSIISNamespaceProvider
private void Button_Click(object sender, RoutedEventArgs e)
{
//zs是我網站的名稱
string iisSite = string.Format("IIS://localhost/W3SVC/{0}/Root",GetWebIndex("zs"));
SetMimeTypeProperty(iisSite, ".json", "application/octet-stream");
}
/// <summary>
/// 根據網站名，獲取Index
/// </summary>
/// <param name="websiteName"></param>
/// <returns></returns>
private string GetWebIndex(string websiteName)
{
DirectoryEntry root = new DirectoryEntry("IIS://localhost/W3SVC");
foreach (DirectoryEntry dir in root.Children)
{
if (dir.SchemaClassName == "IIsWebServer")
{
string ww = dir.Properties["ServerComment"].Value.ToString();
if(ww==websiteName)
{
return dir.Name;
}
}
}
return "1";
}
/// <summary>
/// 設置IIS的MIME類型，SetMimeTypeProperty("IIS://localhost/W3SVC/1/Root", ".hlp", "application/winhlp");
/// </summary>
/// <param name="metabasePath"></param>
/// <param name="newExtension"></param>
/// <param name="newMimeType"></param>
static void SetMimeTypeProperty(string metabasePath, string newExtension, string newMimeType)
{
try
{
DirectoryEntry path = new DirectoryEntry(metabasePath);
PropertyValueCollection propValues = path.Properties["MimeMap"];
Console.WriteLine(" Old value of MimeMap has {0} elements", propValues.Count);
object exists = null;
foreach (object value in propValues)
{
// IISOle requires a reference to the Active DS IIS Namespace Provider in Visual Studio .NET
IISOle.IISMimeType mimetypeObj = (IISOle.IISMimeType)value;
Console.WriteLine(" {0}->{1}", mimetypeObj.Extension, mimetypeObj.MimeType);
if (newExtension == mimetypeObj.Extension)
exists = value;
}
if (null != exists)
{
propValues.Remove(exists);
Console.WriteLine(" Found an entry for {0}; removing it before adding the new one.", newExtension);
}
IISOle.MimeMapClass newObj = new IISOle.MimeMapClass();
newObj.Extension = newExtension;
newObj.MimeType = newMimeType;
propValues.Add(newObj);
path.CommitChanges();
Console.WriteLine(" Done.");
}
catch (Exception ex)
{
if ("HRESULT 0x80005006" == ex.Message)
Console.WriteLine(" Property MimeMap does not exist at {0}", metabasePath);
else
Console.WriteLine("Failed in SetMimeTypeProperty with the following exception: \n{0}", ex.Message);
}
}