[android-beginners] Re: Unable to Connect to FTP server
I have been banging my head against the very same problem until I
remembered the permission need to be set in the manifest:
That should get you past the error you are having.
On Jun 15, 4:43 pm, Andy Wolpert wrote:
> Hello All -
>
> I am trying to upload a file from the Android (Emulator or I/O phone)
> and get a cannot connect to server error. I saw a variety of posts,
> but never a solution. The same accounts, URLs and passwords work from
> the shell.
>
> The following code is "Hello Android" extended to call my FTP code.
> (accounts, passwords changed).
> Does FTP upload work?
> Is there a sample to work from?
> Any other ideas?
> (P.S. I would gladly use HTTP instead but found that more confusing
> and got a different error. So a sample there would be great as well).
> - Andy
>
> -- the code follows -
>
> package com.example.helloandroid;
>
> import java.io.FileInputStream;
> import java.io.OutputStream;
> import java.net.URL;
> import java.net.URLConnection;
> import android.app.Activity;
> import android.os.Bundle;
> import android.util.Log;
>
> public class HelloAndroid extends Activity {
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.main);
>
> try {
> testFTP();
> }
>
> catch (Exception e) {
> Log.println(1, "FTP", e.getMessage());
> e.printStackTrace();
> }
> }
>
> protected void testFTP() throws Exception {
> final String localfile =
> "/data/data/com.technomusicology.upload/
> test.mp3";
> final String targetfile = "test.mp3";
> final String host = "ftp.myhost_here.com";
> final String user = "user_here";
> final String password = "password_here";
> URL url = new URL("ftp://"+ user+ ":"+ password+ "@"+ host +
> "/"+
> targetfile+ ";type=i");
> URLConnection urlc = url.openConnection();
> urlc.setDoOutput(true);
> // the following line throws "unable to connect to host {0}"
> OutputStream os = urlc.getOutputStream();
> FileInputStream is= new FileInputStream(localfile);
>
> byte[] buf= new byte[16384];
> int c;
> while (true) {
> c= is.read(buf);
> if (c<= 0) break;
> os.write(buf, 0, c);
> }
> os.close();
> is.close();
> urlc = null; // close
> }
>
> }
>
> // here is more information on the exception
> this HelloAndroid (id=830058643256)
> savedInstanceState null
> e IOException (id=830058667280)
> cause IOException (id=830058667280)
> detailMessage "Unable to connect to server: {0}" (id=830058746592)
> stackState int[] (id=830058792560)
> stackTrace null
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[android-beginners] Re: Unable to Connect to FTP server
I don't think you want URLConnection. I believe you'd actually want to set
up a Socket (http://developer.android.com/reference/java/net/Socket.html)
instead.
I implemented a simple one in C# a while back, and used the code from
http://www.codeproject.com/KB/IP/ftplib.aspx as a guide.
On Mon, Jun 15, 2009 at 4:43 PM, Andy Wolpert wrote:
>
> Hello All -
>
> I am trying to upload a file from the Android (Emulator or I/O phone)
> and get a cannot connect to server error. I saw a variety of posts,
> but never a solution. The same accounts, URLs and passwords work from
> the shell.
>
> The following code is "Hello Android" extended to call my FTP code.
> (accounts, passwords changed).
> Does FTP upload work?
> Is there a sample to work from?
> Any other ideas?
> (P.S. I would gladly use HTTP instead but found that more confusing
> and got a different error. So a sample there would be great as well).
> - Andy
>
> -- the code follows -
>
> package com.example.helloandroid;
>
> import java.io.FileInputStream;
> import java.io.OutputStream;
> import java.net.URL;
> import java.net.URLConnection;
> import android.app.Activity;
> import android.os.Bundle;
> import android.util.Log;
>
> public class HelloAndroid extends Activity {
>/** Called when the activity is first created. */
>@Override
>public void onCreate(Bundle savedInstanceState) {
>super.onCreate(savedInstanceState);
>setContentView(R.layout.main);
>
>try {
>testFTP();
>}
>
>catch (Exception e) {
>Log.println(1, "FTP", e.getMessage());
>e.printStackTrace();
>}
>}
>
>protected void testFTP() throws Exception {
>final String localfile =
> "/data/data/com.technomusicology.upload/
> test.mp3";
>final String targetfile = "test.mp3";
>final String host = "ftp.myhost_here.com";
>final String user = "user_here";
>final String password = "password_here";
>URL url = new URL("ftp://"+ user+ ":"+ password+ "@"+ host
> + "/"+
> targetfile+ ";type=i");
>URLConnection urlc = url.openConnection();
>urlc.setDoOutput(true);
>// the following line throws "unable to connect to host {0}"
>OutputStream os = urlc.getOutputStream();
>FileInputStream is= new FileInputStream(localfile);
>
> byte[] buf= new byte[16384];
> int c;
> while (true) {
> c= is.read(buf);
> if (c<= 0) break;
> os.write(buf, 0, c);
> }
> os.close();
> is.close();
> urlc = null; // close
>}
> }
>
> // here is more information on the exception
> thisHelloAndroid (id=830058643256)
> savedInstanceState null
> e IOException (id=830058667280)
>cause IOException (id=830058667280)
>detailMessage "Unable to connect to server: {0}" (id=830058746592)
>stackState int[] (id=830058792560)
>stackTrace null
>
> >
>
--
Andrew Burgess
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[android-beginners] Re: Unable to Connect to FTP server
I have olsa this error.Did you find solution??
On 1 Temmuz, 18:36, Andrew Burgess wrote:
> I don't think you want URLConnection. I believe you'd actually want to set
> up a Socket (http://developer.android.com/reference/java/net/Socket.html)
> instead.
>
> I implemented a simple one in C# a while back, and used the code
> fromhttp://www.codeproject.com/KB/IP/ftplib.aspxas a guide.
>
> On Mon, Jun 15, 2009 at 4:43 PM, Andy Wolpert
> wrote:
>
>
>
>
>
>
>
> > Hello All -
>
> > I am trying to upload a file from the Android (Emulator or I/O phone)
> > and get a cannot connect to server error. I saw a variety of posts,
> > but never a solution. The same accounts, URLs and passwords work from
> > the shell.
>
> > The following code is "Hello Android" extended to call my FTP code.
> > (accounts, passwords changed).
> > Does FTP upload work?
> > Is there a sample to work from?
> > Any other ideas?
> > (P.S. I would gladly use HTTP instead but found that more confusing
> > and got a different error. So a sample there would be great as well).
> > - Andy
>
> > -- the code follows -
>
> > package com.example.helloandroid;
>
> > import java.io.FileInputStream;
> > import java.io.OutputStream;
> > import java.net.URL;
> > import java.net.URLConnection;
> > import android.app.Activity;
> > import android.os.Bundle;
> > import android.util.Log;
>
> > public class HelloAndroid extends Activity {
> > /** Called when the activity is first created. */
> > �...@override
> > public void onCreate(Bundle savedInstanceState) {
> > super.onCreate(savedInstanceState);
> > setContentView(R.layout.main);
>
> > try {
> > testFTP();
> > }
>
> > catch (Exception e) {
> > Log.println(1, "FTP", e.getMessage());
> > e.printStackTrace();
> > }
> > }
>
> > protected void testFTP() throws Exception {
> > final String localfile =
> > "/data/data/com.technomusicology.upload/
> > test.mp3";
> > final String targetfile = "test.mp3";
> > final String host = "ftp.myhost_here.com";
> > final String user = "user_here";
> > final String password = "password_here";
> > URL url = new URL("ftp://"+ user+ ":"+ password+ "@"+ host
> > + "/"+
> > targetfile+ ";type=i");
> > URLConnection urlc = url.openConnection();
> > urlc.setDoOutput(true);
> > // the following line throws "unable to connect to host {0}"
> > OutputStream os = urlc.getOutputStream();
> > FileInputStream is= new FileInputStream(localfile);
>
> > byte[] buf= new byte[16384];
> > int c;
> > while (true) {
> > c= is.read(buf);
> > if (c<= 0) break;
> > os.write(buf, 0, c);
> > }
> > os.close();
> > is.close();
> > urlc = null; // close
> > }
> > }
>
> > // here is more information on the exception
> > this HelloAndroid (id=830058643256)
> > savedInstanceState null
> > e IOException (id=830058667280)
> > cause IOException (id=830058667280)
> > detailMessage "Unable to connect to server: {0}" (id=830058746592)
> > stackState int[] (id=830058792560)
> > stackTrace null
>
> --
> Andrew Burgess- Alıntıyı gizle -
>
> - Alıntıyı göster -
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