Hi all,
I'm facing problem when trying to use JSON object to access the .net project
database.
please let me know, where i'm doing mistake, i given more than 4 days to
rectify.
logcat details -
05-16 17:32:26.132: INFO/System.out(1656): response.getProtocolVersion()
=HTTP/1.0
05-16 17:32:26.132: INFO/System.out(1656):
response.getStatusLine().getStatusCode() =404
05-16 17:32:26.132: INFO/System.out(1656):
response.getStatusLine().getReasonPhrase() = Not Found
05-16 17:32:26.141: INFO/System.out(1656):
response.getStatusLine().toString() =HTTP/1.0 404 Not Found
05-16 17:32:26.141: INFO/System.out(1656): inside try 3
05-16 17:32:26.151: INFO/System.out(1656): connection entity.toString()=
org.apache.http.conn.BasicManagedEntity@43ea4288
05-16 17:32:26.161: INFO/global(1656): Default buffer size used in
BufferedReader constructor. It would be better to be explicit if an 8k-char
buffer is required.
05-16 17:32:26.161: INFO/System.out(1656): result =
05-16 17:32:26.171: WARN/System.err(1656): org.json.JSONException: End of
input at character 0 of
05-16 17:32:26.182: WARN/System.err(1656): at
org.json.JSONTokener.syntaxError(JSONTokener.java:446)
05-16 17:32:26.182: WARN/System.err(1656): at
org.json.JSONTokener.nextValue(JSONTokener.java:93)
05-16 17:32:26.182: WARN/System.err(1656): at
org.json.JSONObject.<init>(JSONObject.java:154)
05-16 17:32:26.182: WARN/System.err(1656): at
org.json.JSONObject.<init>(JSONObject.java:171)
05-16 17:32:26.182: WARN/System.err(1656): at
com.sst.restaurant.RestJsonClient.connect(RestJsonClient.java:75)
05-16 17:32:26.192: WARN/System.err(1656): at
com.sst.restaurant.LoginDetails.onClick(LoginDetails.java:141)
05-16 17:32:26.192: WARN/System.err(1656): at
android.view.View.performClick(View.java:2408)
05-16 17:32:26.192: WARN/System.err(1656): at
android.view.View$PerformClick.run(View.java:8816)
05-16 17:32:26.192: WARN/System.err(1656): at
android.os.Handler.handleCallback(Handler.java:587)
05-16 17:32:26.192: WARN/System.err(1656): at
android.os.Handler.dispatchMessage(Handler.java:92)
05-16 17:32:26.212: WARN/System.err(1656): at
android.os.Looper.loop(Looper.java:123)
05-16 17:32:26.306: DEBUG/dalvikvm(1656): GC_FOR_MALLOC freed 2764 objects /
179392 bytes in 92ms
05-16 17:32:26.306: WARN/System.err(1656): at
android.app.ActivityThread.main(ActivityThread.java:4627)
05-16 17:32:26.306: WARN/System.err(1656): at
java.lang.reflect.Method.invokeNative(Native Method)
05-16 17:32:26.311: WARN/System.err(1656): at
java.lang.reflect.Method.invoke(Method.java:521)
05-16 17:32:26.311: WARN/System.err(1656): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-16 17:32:26.311: WARN/System.err(1656): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-16 17:32:26.311: WARN/System.err(1656): at
dalvik.system.NativeStart.main(Native Method)
05-16 17:32:26.321: WARN/System.err(1656): org.json.JSONException: No value
for Login
05-16 17:32:26.321: WARN/System.err(1656): at
org.json.JSONObject.get(JSONObject.java:354)
05-16 17:32:26.321: WARN/System.err(1656): at
org.json.JSONObject.getString(JSONObject.java:510)
05-16 17:32:26.341: WARN/System.err(1656): at
com.sst.restaurant.LoginDetails.onClick(LoginDetails.java:142)
05-16 17:32:26.341: WARN/System.err(1656): at
android.view.View.performClick(View.java:2408)
05-16 17:32:26.341: WARN/System.err(1656): at
android.view.View$PerformClick.run(View.java:8816)
05-16 17:32:26.341: WARN/System.err(1656): at
android.os.Handler.handleCallback(Handler.java:587)
05-16 17:32:26.341: WARN/System.err(1656): at
android.os.Handler.dispatchMessage(Handler.java:92)
05-16 17:32:26.341: WARN/System.err(1656): at
android.os.Looper.loop(Looper.java:123)
05-16 17:32:26.341: WARN/System.err(1656): at
android.app.ActivityThread.main(ActivityThread.java:4627)
05-16 17:32:26.341: WARN/System.err(1656): at
java.lang.reflect.Method.invokeNative(Native Method)
05-16 17:32:26.341: WARN/System.err(1656): at
java.lang.reflect.Method.invoke(Method.java:521)
05-16 17:32:26.352: WARN/System.err(1656): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-16 17:32:26.352: WARN/System.err(1656): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-16 17:32:26.372: WARN/System.err(1656): at
dalvik.system.NativeStart.main(Native Method)
my source code - jsno client code -
public class RestJsonClient {
public static JSONObject connect(String url) {
String result = null;
System.out.println("result = " + result);
HttpClient httpclient = new DefaultHttpClient();
// Prepare a request object
HttpGet httpget = new HttpGet("http://10.91.28.203";);
// Execute the request
HttpResponse response;
JSONObject json = new JSONObject();
System.out.println("result = " + result);
System.out.println("json object " + json.toString());
try {
System.out.println("inside try 1");
response = httpclient.execute(httpget);
System.out.println("inside try 2");
System.out.println("response.getProtocolVersion() ="
+ response.getProtocolVersion());
System.out.println("response.getStatusLine().getStatusCode() ="
+ response.getStatusLine().getStatusCode());
System.out.println("response.getStatusLine().getReasonPhrase()
= "
+ response.getStatusLine().getReasonPhrase());
System.out.println("response.getStatusLine().toString() ="
+ response.getStatusLine().toString());
HttpEntity entity = response.getEntity();
System.out.println("inside try 3");
System.out.println("connection entity.toString()= "
+ entity.toString());
if (entity != null) {
// A Simple JSON Response Read
InputStream instream = entity.getContent();
result = convertStreamToString(instream);
System.out.println("result = " + result);
json = new JSONObject(result);
instream.close();
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return json;
}
/**
*
* @param is
* @return String
*/
public static String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new
InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
}
LoginDetails page -
public class LoginDetails extends Activity implements OnClickListener {
private static final int SERVER_PORT = 1311;
private static final String DEB_TAG = "Json_Android";
private String SERVER_HOST = "http://localhost:1311/";;
public static final String PREFS_NAME = "HelloAndroidPREFS";
private SharedPreferences settings;
private ProgressDialog progress;
JSONObject json;
/*
* protected LoginScreen(Context paramContext) { super(paramContext);
* AppInstance.getInstance().LoadPreferences(paramContext); }
*/
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
super.onCreate(icicle);
// Restore preferences
settings = getSharedPreferences(PREFS_NAME, 0);
// load up the layout
setContentView(R.layout.main3);
// get the button resource in the xml file and assign it to a local
// variable of type Button
Button login = (Button) findViewById(R.id.login_button);
Log.i(DEB_TAG, "onCreate");
login.setOnClickListener(this);
setUserNameText(settings.getString("Login", ""));
setPasswordText(settings.getString("Password", ""));
}
public void setUserNameText(String $username) {
EditText usernameEditText = (EditText)
findViewById(R.id.txt_username);
usernameEditText.setText($username);
}
public void setPasswordText(String username) {
EditText passwordEditText = (EditText)
findViewById(R.id.txt_password);
passwordEditText.setText(username);
}
/*
*
* (non-Javadoc)
*
* @see android.view.View.OnClickListener#onClick(android.view.View)
*/
public void onClick(View v) {
// Handle based on which view was clicked.
Log.i(DEB_TAG + " onClick ", "onClick");
// this gets the resources in the xml file
// and assigns it to a local variable of type EditText
EditText usernameEditText = (EditText)
findViewById(R.id.txt_username);
EditText passwordEditText = (EditText)
findViewById(R.id.txt_password);
// the getText() gets the current value of the text box
// the toString() converts the value to String data type
// then assigns it to a variable of type String
String sUserName = usernameEditText.getText().toString();
String sPassword = passwordEditText.getText().toString();
// call the backend using Get parameters (discouraged but works good
for
// this exampl <img
// src="
http://www.instropy.com/wp-includes/images/smilies/icon_wink.gif";
// alt=";)" class="wp-smiley"> )
String address = "http://"; + SERVER_HOST + ":" + SERVER_PORT
+ "/Login.aspx?action=login&Login=" + sUserName +
"&Password="
+ sPassword + "";
if ((usernameEditText == null) || (passwordEditText == null)) {
System.out.println("User Name does not exit");
Toast.makeText(this.getBaseContext(),
"Invalid Username or password", 0).show();
} else {
// display the username and the password in string format
// Toast.makeText(getBaseContext(), "valid Username or
password",
// 0).show();
try {
showBusyCursor(true);
progress = ProgressDialog.show(this,
"Please wait...", "Login in process", true);
Log.i(DEB_TAG, "Username: " + sUserName + " Password: "
+ sPassword);
Log.i(DEB_TAG, "Requesting to " + address);
json = RestJsonClient.connect(address);
System.out.println("json =" + json.getString("Login"));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
showBusyCursor(false);
}// end try
progress.dismiss();
SharedPreferences.Editor editor = settings.edit();
editor.putString("Login", sUserName);
editor.putString("Password", sPassword);
editor.commit();
showBusyCursor(false);
next();
}// end else
}// end OnClick
/*
*
*/
private void showBusyCursor(Boolean $show) {
setProgressBarIndeterminateVisibility($show);
}
private void next() {
// you can call another activity by uncommenting the above lines
Intent myIntent = new Intent(this.getBaseContext(),
RestaurantHome.class);
startActivityForResult(myIntent, 0);
}
/*
* protected String doInBackground(String[] paramArrayOfString) {
WebService
* localWebService = new WebService(); WebService.WebServiceCall
* localWebServiceCall = WebService.WebServiceCall.LOGIN; Object[]
* arrayOfObject = new Object[2]; String str1 = paramArrayOfString[0];
* arrayOfObject[0] = str1; String str2 = paramArrayOfString[1];
* arrayOfObject[1] = str2; return
* localWebService.execute(localWebServiceCall, true, arrayOfObject); }
*/
}
--
Thanks & Regards
Rakesh Kumar Jha
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