文件上傳到.net c＃服務器拋出IOException

Question

*大家好， 我試過使用c＃將文件上傳到.net服務器。我只是使用c：/ inetpub/wwwroot作爲服務器位置。

我的Java代碼，

public class MainActivity extends Activity { 
    InputStream inputStream; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.two); 
     ByteArrayOutputStream stream = new ByteArrayOutputStream(); 

     bitmap.compress(Bitmap.CompressFormat.PNG,90, stream); 
     byte[] byte_arr = stream.toByteArray(); 
     String image_str = Base64.encodeBytes(byte_arr); 
     ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); 
     nameValuePairs.add(new BasicNameValuePair("image",image_str)); 

     try { 
      HttpClient httpClient = new DefaultHttpClient(); 
      HttpPost httpPost = new HttpPost("http://127.0.0.1/AndroidUpload/uploadImage.cs"); 
      httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 

      HttpResponse response = httpClient.execute(httpPost); 
      String the_response_string = convertResponseToString(response); 


      Toast.makeText(this, "Response"+the_response_string, Toast.LENGTH_SHORT).show(); 
     } catch (UnsupportedEncodingException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      Toast.makeText(this,"Error1", Toast.LENGTH_SHORT).show(); 
     } catch (ClientProtocolException e) { 
      //TODO Auto-generated catch block 
      e.printStackTrace(); 
      Toast.makeText(this,"Error2", Toast.LENGTH_SHORT).show();} 
     catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      Toast.makeText(this,"Error3", Toast.LENGTH_SHORT).show(); 
     } 

    } 
    public String convertResponseToString(HttpResponse response)throws IllegalStateException,IOException { 
     // TODO Auto-generated method stub 

     String res = ""; 
     StringBuffer buffer = new StringBuffer(); 
     inputStream = response.getEntity().getContent(); 
     int contentLength = (int) response.getEntity().getContentLength(); 
     Toast.makeText(this, "ContentLength"+contentLength, Toast.LENGTH_SHORT).show(); 

     if(contentLength<0){ 
        } 
     else{ 
      byte[] data = new byte[512]; 
      int len = 0; 

      try { 
       while(-1 != (len=inputStream.read(data))){ 
        buffer.append(new String(data,0,len)); 
       } 

       inputStream.close(); 
      } catch (Exception e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 

      res = buffer.toString(); 

      Toast.makeText(this, "Result"+res, Toast.LENGTH_SHORT).show(); 
     } 

     return res; 
    } 
    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 
} 

而且我對上傳的C＃代碼，

protected void Page_Init(object sender, EventArgs e) 
{ 
    string vTitle = ""; 
    string vDesc = ""; 
    string FilePath = Server.MapPath("/files/two.png");   
    if (!string.IsNullOrEmpty(Request.Form["title"])) 
    { 
    vTitle = Request.Form["title"]; 
    } 
    if (!string.IsNullOrEmpty(Request.Form["description"])) 
    { 
    vDesc = Request.Form["description"]; 
    } 

    HttpFileCollection MyFileCollection = Request.Files; 
    if (MyFileCollection.Count > 0) 
    { 
    // Save the File 
    MyFileCollection[0].SaveAs(FilePath); 
    } 
} 

運行時，它拋出IOException異常。該文件不上傳到該文件夾​​。同樣的結果也嘗試了PHP代碼。 問題在哪裏？

Answer 1

要從仿真器連接到PC的Web服務器，您需要按照目前使用的由Android的addressing convention。更具體地說，10.0.2.2是你想要使用的地址。

另外請確保您的AndroidManifest.xml包含Internet使用權限。歡呼聲

Answer 2

這是一個常見問題。事實上，你應該在iis網絡服務器（在你的計算機）上託管你的asp.net web應用程序並獲得你的計算機ip地址（通過ipconfig命令在cmd中），然後把你的ip地址代替"http://127.0.0.1/AndroidUpload/..."。它可以像"http://192.168.1.2/AndroidUpload/..."

Android模擬器無法理解127.0.0.1（將localAddress）

編輯：

我不如何​​upoad用asp.net web表單文件，但如果我是你，我會寫一個簡單的asp.net MVC應用程序，並在控制器中，我宣佈一個動作是這樣的：

[HttpPost] 
     public ActionResult UploadItem() 
     { 
      var httpPostedFileBase = Request.Files[0]; 
      if (httpPostedFileBase != null && httpPostedFileBase.ContentLength != 0) 
      { 
       //save file in server and return a string 
     return Content("Ok"); 
      } 
      else 
      { 
       return Content("Failed") 
      } 
    }