文件上传到.net c#服务器引发IOException
本文关键字:服务器 IOException net 文件 | 更新日期: 2023-09-27 18:22:13
*大家好,我已经尝试使用c#将文件上传到.net服务器。我只是使用c:''inetpub/wwwroot作为服务器位置。
我的java代码是
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;
}
}
我上传的c#代码是,
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);
}
}
当Run时,它抛出IOException。并且该文件不会上载到该文件夹中。也尝试了php代码,结果相同。问题出在哪里?
要从模拟器连接到PC web服务器,您需要遵循Android当前使用的寻址约定。更具体地说,10.0.2.2
是您想要使用的地址。
还要确保您的AndroidManifest.xml
包含使用Internet的权限。干杯
这是一个常见的问题。事实上,你应该将你的asp.net网络应用程序托管在iis网络服务器上(在你的计算机上),并获得你的计算机ip地址(通过cmd中的ipconfig命令),然后输入你的ip地址而不是"http://127.0.0.1/AndroidUpload/..."
。它可能像"http://192.168.1.2/AndroidUpload/..."
Android模拟器无法理解127.0.0.1(本地地址)
编辑:
我不知道如何用asp.net web表单加载文件,但如果我是你,我会写一个简单的asp.net mvc应用程序,在控制器中,我声明一个这样的操作:
[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")
}
}