I am trying to connect my app to database on localhost server.I can connect to it ut the problem is how to pass the parameter from app to php script.for eg i want all names having age less than 10 so i will pass the parameter to php.below is my code for connecting to database.please provide good reference
/* */
enter code here
public class TestExternalDatabaseActivity extends Activity {
/** Called when the activity is first created. */
TextView resultView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
StrictMode.enableDefaults(); //STRICT MODE ENABLED
resultView = (TextView) findViewById(R.id.result);
getData();
}
public void getData(){
String result = "";
InputStream isr = null;
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://localhost/tahseen0amin/php/getAllCustomers.php"); //YOUR PHP SCRIPT ADDRESS
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
isr = entity.getContent();
}
catch(Exception e){
Log.e("log_tag", "Error in http connection "+e.toString());
resultView.setText("Couldnt connect to database");
}
//convert response to string
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(isr,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
isr.close();
result=sb.toString();
}
catch(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
}
//parse json data
try {
String s = "";
JSONArray jArray = new JSONArray(result);
for(int i=0; i<jArray.length();i++){
JSONObject json = jArray.getJSONObject(i);
s = s +
"Name : "+json.getString("FirstName")+" "+json.getString("LastName")+"\n"+
"Age : "+json.getInt("Age")+"\n"+
"Mobile Using : "+json.getString("Mobile")+"\n\n";
}
resultView.setText(s);
} catch (Exception e) {
// TODO: handle exception
Log.e("log_tag", "Error Parsing Data "+e.toString());
}
}
}
Hi i am trying to implement OAuth1.0 following this tutorial in this tutorial there is a heading OAuthGetRequestToken
in which for getting request token we have to send a post request to URL
www.google.com/accounts/OAuthGetRequestToken
i am sending a post request in my code in google app engine my code is:
public class HelloWorldServlet extends HttpServlet {
#SuppressWarnings({ "unchecked", "unchecked" })
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
resp.setContentType("text/html");
resp.getWriter().println("<html><head> <meta name=\"google-site-verification\" content=\"OBFeK6hFEbTkNdcYc-SQNH9tCTpcht-HkUdj6IgCaLg\" </head>");
resp.getWriter().println("<body>Hello, world");
//String post="key=AIzaSyBgmwbZaW3-1uaVOQ9UqlyHAUxvQtHe7X0&oauth_consumer_key=iriteshmehandiratta.appspot.com";
//String param= "&oauth_callback=\"https://www.iriteshmehandiratta.appspot.com\"&scope=\"http://www.google.com/calendar/feeds\"";
//URL url=new URL("https://www.googleapis.com/prediction/v1.5/trainedmodels/10/predict?");
TreeMap<String,String> tree=new TreeMap<String,String>();
tree.put("oauth_version","1.0");
tree.put("oauth_nonce", System.currentTimeMillis()+"");
tree.put("oauth_timestamp",System.currentTimeMillis()/1000+"");
tree.put("oauth_consumer_key", "imehandirattaritesh.appspot.com");
tree.put("oauth_signature_method", "RSA-SHA1");
ServletContext context = getServletContext();
PrivateKey privKey = getPrivateKey(context,"/myrsakey11.pk8");
tree.put("oauth_callback", "https://imehandirattaritesh.appspot.com/authsub");
tree.put("scope", "https://www.google.com/calendar/feeds");
Set set = tree.entrySet();
Iterator<Map.Entry<String, String>> i = set.iterator();
String datastring="";
Map.Entry me=(Map.Entry)i.next();
datastring=me.getKey()+"=";
datastring+=me.getValue();
while(i.hasNext()) {
me = (Map.Entry)i.next();
datastring+="&"+me.getKey()+"=";
datastring+=(me.getValue());
}
String data_string="GET&https://www.google.com/accounts/OAuthGetRequestToken&"+datastring;
byte[] xx11;
String str = null;
try {
xx11 = sign(privKey,data_string);
str=new String(xx11);
resp.getWriter().println(str);
} catch (GeneralSecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
URL url=new URL("https://www.google.com/accounts/OAuthGetRequestToken?"+str);
// resp.getWriter().println(""+datastring);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
urlConnection.setRequestProperty("Authorization", " OAuth");
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
resp.getWriter().println( urlConnection.getResponseCode());
String xx="";
String xx1="";
while((xx1=in.readLine()) != null)
{
xx+=xx1;
}
resp.getWriter().println("response");
resp.getWriter().println(xx);
resp.getWriter().println("</body></html>");
}
public static PrivateKey getPrivateKey(ServletContext context,String privKeyFileName) throws IOException {
InputStream resourceContent = context.getResourceAsStream("/WEB-INF/myrsakey11.pk8");
// FileInputStream fis = new FileInputStream(privKeyFile);
DataInputStream dis = new DataInputStream(resourceContent);
#SuppressWarnings("deprecation")
String str="";
String str1="";
while((str=dis.readLine())!=null)
{
str1+=str;
}
String BEGIN = "-----BEGIN PRIVATE KEY-----";
String END = "-----END PRIVATE KEY-----";
// String str = new String(privKeyBytes);
if (str1.contains(BEGIN) && str1.contains(END)) {
str1 = str1.substring(BEGIN.length(), str1.lastIndexOf(END));
}
KeyFactory fac;
try {
fac = KeyFactory.getInstance("RSA");
EncodedKeySpec privKeySpec= new PKCS8EncodedKeySpec(Base64.decode(str1));
return fac.generatePrivate(privKeySpec);
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Base64DecoderException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvalidKeySpecException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
byte[] sign(PrivateKey key, String data) throws GeneralSecurityException {
Signature signature = Signature.getInstance("SHA1withRSA");
signature.initSign(key);
signature.update(data.getBytes());
return signature.sign();
}
}
first i generate data_string then sign it using my private key i get an encrypted string like this
F????T???&??$????????l:v????x???}??U-'?"?????U?[?kr^?G?(? ???qT0??]??j???5??`??$??AD??T??#<t?,#:`V????????????
then i concatenate it with
url : https://www.google.com/accounts/OAuthGetRequestToken?
and i get 400 error obviously it is not a valid uri format so i get this error.i post a query on stackoverflow a person suggest me to use sign method and after signing data_string i will get oauth_signature embedded in the return string which is variable str but in place of oauth_signature included i am getting an encrypted string can any one please tell me how to sign this data_string and what mistake i am doing ??
I would suggest you use an existing Java library for doing the OAuth. It will be much easier in the long term and you won't have to worry about debugging the protocol.
In my action I stored the request token as follow:
//TwitterOath
public String execute(){
Twitter twitter = new TwitterFactory().getInstance();
twitter.setOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
try {
RequestToken requestToken = twitter.getOAuthRequestToken(REDIRECT_URI);
authUrl = requestToken.getAuthenticationURL();
//session
Map<String, Object> session = ActionContext.getContext().getSession();
session.put("requestToken", requestToken);
} catch (TwitterException e) {
e.printStackTrace();
}
return SUCCESS;
}
In REDIRECT_URI action:
RequestToken requestToken = (RequestToken)
ActionContext.getContext().getSession().get("requestToken");
The problem is that sometimes, requestToken is null.
I've been dying for about 6 hours trying to figure out how to make a regular POST request in WP7 , I tried the answers of similar questions posted here and on many other places, I also tried many different APIs POST request, they all lead to one certain problem,
The remote server returned an error: NotFound.
it seems like everytime there's something missing.
So, if you please someone show us how to properly get a POST request right in this WP7
I use this to post to facebook without any problem:
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(requestUrl);
request.Method = "POST";
request.BeginGetResponse((e) =>
{
try
{
WebResponse response = request.EndGetResponse(e);
// Do Stuff
}
catch (WebException ex)
{
// Handle
}
catch (Exception ex)
{
// Handle
}
}, null);
I assume you would have tried this already so it may be something to do with the post data (which isn't in the above example as facebook uses the query string). Can you give us any more info?
EDIT: This is an (untested) example for writing post data:
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(requestUrl);
request.Method = "POST";
request.BeginGetRequestStream((e) =>
{
using (Stream stream = request.EndGetRequestStream(e))
{
// Write data to the request stream
}
request.BeginGetResponse((callback) =>
{
try
{
WebResponse response = request.EndGetResponse(callback);
// Do Stuff
}
catch (WebException ex)
{
// Handle
}
catch (Exception ex)
{
// Handle
}
}, null);
}, null);
I use the following class for making POST requests with WP7:
public class PostMultiPartFormData
{
private Dictionary<string, object> Parameters;
private Encoding ENCODING = Encoding.UTF8;
private string BOUNDARY = "-----------------------------wp7postrequest";
public event EventHandler PostComplete;
public void Post(string postbackURL,
Dictionary<string, object> parameters)
{
Parameters = parameters;
Uri url = null;
url = new Uri(postbackURL);
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "POST";
request.ContentType = "multipart/form-data; boundary=" + BOUNDARY;
request.BeginGetRequestStream(new AsyncCallback(SendStatusUpdate), request);
}
private void SendStatusUpdate(IAsyncResult ar)
{
HttpWebRequest request = (HttpWebRequest)ar.AsyncState;
Stream stream = request.EndGetRequestStream(ar);
byte[] byteArray = GetMultipartFormData(Parameters, BOUNDARY);
stream.Write(byteArray, 0, byteArray.Length);
stream.Close();
stream.Dispose();
request.BeginGetResponse(new AsyncCallback(StatusUpdateCompleted), request);
}
private byte[] GetMultipartFormData(Dictionary<string, object> postParameters, string boundary)
{
Stream formDataStream = new System.IO.MemoryStream();
foreach (var param in postParameters)
{
if (param.Value is byte[])
{
byte[] fileData = param.Value as byte[];
string header = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"; filename=\"{2}.jpg\";\r\nContent-Type: application/octet-stream\r\n\r\n", boundary, param.Key, param.Key);
formDataStream.Write(ENCODING.GetBytes(header), 0, header.Length);
formDataStream.Write(fileData, 0, fileData.Length);
}
else
{
string postData = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"\r\n\r\n{2}\r\n", boundary, param.Key, param.Value);
byte[] b = ENCODING.GetBytes(postData);
foreach (var item in b)
{
formDataStream.WriteByte(item);
}
}
}
string footer = "\r\n--" + boundary + "--\r\n";
byte[] footerbytes = ENCODING.GetBytes(footer);
formDataStream.Write(footerbytes, 0, footerbytes.Length);
formDataStream.Position = 0;
byte[] formData = new byte[formDataStream.Length];
formDataStream.Read(formData, 0, formData.Length);
formDataStream.Flush();
formDataStream.Close();
return formData;
}
private void StatusUpdateCompleted(IAsyncResult ar)
{
if (PostComplete != null)
{
PostComplete(ar, null);
}
}
}
Example:
PostMultiPartFormData postRequest = new PostMultiPartFormData();
postRequest.PostComplete += new EventHandler( (sender, e) =>
{
IAsyncResult ar = ((IAsyncResult)sender);
using (WebResponse resp = ((HttpWebRequest)ar.AsyncState).EndGetResponse(ar))
{
using (StreamReader sr = new StreamReader(resp.GetResponseStream()))
{
string responseString = sr.ReadToEnd();
this.Dispatcher.BeginInvoke(() =>
{
textBlock.Text = responseString;
});
}
}
});
postRequest.Post("http://localhost:50624/SSLProxy.ashx",
new Dictionary<string, object>() { { "param1", "value1" } });
This should work...
If it doesn't let me know! :-)
For easier access to advanced http features check out these http classes:
http://mytoolkit.codeplex.com/wikipage?title=Http
It encapsulates GET, POST, FILES (using path or Stream objects) and GZIP (not directly supported by WP7) requests.
To add post data just call BeginGetRequestStream method (also, BeginGetResponse move to GetRequestStreamCallback)
request.BeginGetRequestStream(new AsyncCallback(GetRequestStreamCallback), request);
void GetRequestStreamCallback(IAsyncResult asynchronousResult)
{
HttpWebRequest webRequest = (HttpWebRequest)asynchronousResult.AsyncState;
// End the stream request operation
Stream postStream = webRequest.EndGetRequestStream(asynchronousResult);
// Create the post data
string postData = "post data";
byte[] byteArray = Encoding.Unicode.GetBytes(postData);
// Add the post data to the web request
postStream.Write(byteArray, 0, byteArray.Length);
postStream.Close();
// Start the web request
webRequest.BeginGetResponse(new AsyncCallback(GetResponseCallback), webRequest);
}
I recommend you to use the postclient. It is pretty simple. You just need to add reference to dll file into your project, and then write something like:
public void authorize(string login, string password)
{
Dictionary<string, object> parameters = new Dictionary<string, object>();
parameters.Add("command", "login");
parameters.Add("username", login);
parameters.Add("password", password);
PostClient proxy = new PostClient(parameters);
proxy.DownloadStringCompleted += (sender, e) =>
{
if (e.Error == null)
{
MessageBox.Show(e.Result);
}
};
proxy.DownloadStringAsync(new Uri("http://address.com/service", UriKind.Absolute));
}
Experts,
I'm new to OAuth,
I'm writing an small App in windows Phone 7, I'm using OAuth2 for google contacts, I need to get the initial URL API (1) to get the Token
1) https://accounts.google.com/o/oauth2/auth?response_type=code&scope=https://www.google.com/m8/feeds/&redirect_uri=REDIRECT_URI&client_id=CLIENT_ID&hl=en-US&from_login=1&as=NEW_AS&pli=1
I got the success code, and when I'm trying to use this
https://www.google.com/m8/feeds/contacts/default/full?access_token=TOKEN_CODE
but I'm getting 401 error back,
Can you please advice, what mistake i'm going.
I've taken Twitter OAuth example as base, and doing modifications.
CODE
var uri = new Uri(url);
var request = BuildOAuthWebRequest(url, null);
MakeGetRequest(callback, request);
private static HttpWebRequest BuildOAuthWebRequest( string url, string realm)
{
var header = new StringBuilder();
var request = (HttpWebRequest)WebRequest.Create(url);
return request;
}
private static void MakeGetRequest(EventHandler<OAuthEventArgs> callback, HttpWebRequest request)
{
var asyncState = request.BeginGetResponse(new AsyncCallback((asyncRes) =>
{
HttpWebResponse response = null;
try
{
//request has returned
response = (HttpWebResponse)request.EndGetResponse(asyncRes);
if (response.StatusCode == HttpStatusCode.OK)
{
using (StreamReader sr = new StreamReader(response.GetResponseStream()))
{
var token = sr.ReadToEnd();
callback(null, new OAuthEventArgs() { Response = token });
}
}
}
catch (WebException we)
{
string t = new StreamReader(we.Response.GetResponseStream()).ReadToEnd();
callback(null, new OAuthEventArgs() { Error = we, ErrorMessage = t, IsError = true });
}
catch (Exception e)
{
callback(null, new OAuthEventArgs() { Error = e, ErrorMessage = e.Message, IsError = true });
}
finally
{
if (response != null)
response.Close();
}
}), null);
}