I want to pass JSON objects to web services like this
firstname=jhon&lastname=mic&mail=jhon#gmail.com&sex=M&hometown=blablabla
how can I pass,any one please help me.Am trying like this
JSONObject json = new JSONObject();
json.put("firstname", firstname);
json.put("lastname", laststname);
json.put("mail", mail);
json.put("sex", sex);
json.put("hometown", hometown)
HttpClient client=new DefaultHttpClient();
HttpPost post=new HttpPost(url);
post.setEntity(new ByteArrayEntity(json1.toString().getBytes("UTF8")));
HttpResponse response = client.execute(post);
HttpEntity entity = response.getEntity();
if(entity!=null)
{
InputStream instream=entity.getContent();
String result=convertStreamToString(instream);
}
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();
}
But this code not posted the right value to webservice,Is there any wrong please help me ,
Thank you:)
StringBuilder bu = new StringBuilder();
for(int i = 0; i<json.names().length(); i++){
bu.append("&");
try {
bu.append(json.names().getString(i)+"="+json.get(json.names().getString(i)));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
bu.toString();//give you parameters
Related
In my CountryActivity.java I have a HttpRequest to retrieve json information of the wikipedia.
This is the code I use AsyncTask:
private class DownloadFilesTask extends AsyncTask<URL, Integer, String> {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&titles=Portugal");
protected String doInBackground(URL... urls) {
HttpResponse httpResponse = null;
try {
httpResponse = httpClient.execute(httpPost);
} catch (IOException e) {
e.printStackTrace();
}
HttpEntity httpEntity = httpResponse.getEntity();
try {
is = httpEntity.getContent();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
System.out.println(line);
}
is.close();
return sb.toString();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String result) {
showDialog(Integer.parseInt("Downloaded "));
}
}
And, to call the class in my activity I use new DownloadFilesTask();.
The problem is, when I debug my private class, the debugger stops in the line HttpPost httpPost = new HttpPost("https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&titles=Portugal"); and it can't even retrieve the json. Do you know what may be happening? My app doesn't crash or nothing...
This is my logcat: https://pastebin.com/EgVrjfVx
Open connection to url with HttpURLConnection and set setRequestMethod() to GET
URL obj = new URL("https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&titles=Portugal");
HttpURLConnection http = (HttpURLConnection) obj.openConnection();
http.setRequestMethod("GET");
then gets its input stream and read via BufferedReader to your build.
BufferedReader reader = new BufferedReader(new InputStreamReader(http.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
reader.close();
String json_string = sb.toString(); // your json data
Check here full example to understand batter.
I'm having trouble with function(s) I'm writing. I'm trying to convert an inputstream to a string value. I've written two functions and I'm attempting to extract the String value but my Log.e response is returning NULL. Below is my syntax. What am I doing wrong? Thanks
public JSONArray GetCityDetails(String StateID) {
#SuppressWarnings("deprecation")
String url = "http://mywebsite.com/getCity.php?StateID="+URLEncoder.encode(StateID);
HttpEntity httpEntity = null;
try{
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
httpEntity = httpResponse.getEntity();
} catch(ClientProtocolException e){
e.printStackTrace();
} catch(IOException e){
e.printStackTrace();
}
JSONArray jsonArray = null;
if(httpEntity !=null){
try{
InputStream entityResponse = httpEntity.getContent();
// not working
String entityResponseAfterFunctionCall2 = readFully(entityResponse);
// not working
String entityResponseAfterFunctionCall3 = letsDoThisAgain(entityResponse);
Log.e("Entity Response Dude: ", entityResponseAfterFunctionCall3);
jsonArray = new JSONArray(entityResponseAfterFunctionCall3);
} catch(JSONException e){
e.printStackTrace();
} catch(IOException e){
e.printStackTrace();
}
}
return jsonArray;
}
public String readFully(InputStream entityResponse) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int length = 0;
while ((length = entityResponse.read(buffer)) != -1) {
baos.write(buffer, 0, length);
}
return baos.toString();
}
public String letsDoThisAgain(InputStream entityResponse){
InputStreamReader is = new InputStreamReader(entityResponse);
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader(is);
try {
String read = br.readLine();
while(read !=null){
sb.append(read);
read = br.readLine();
}
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
}
if(inputStream != null)
{
BufferedReader br = null;
StringBuilder sb = new StringBuilder();
String line;
try {
br = new BufferedReader(new InputStreamReader(inputStream));
while ((line = br.readLine()) != null) {
sb.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (br != null) {
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return sb.toString();
}
else
{
return "";
}
Your readFully call will use your system's default character encoding to transform byte buffer into String. This is NOT what you want to happen.
You should use explicit character set in toString call. The encoding is usually specified in the HTTP request header.
Here is an example of how to convert a UTF-8 encoded string
return baos.toString( "UTF-8" );
Your second problem, is once you've consumed the InputString in readFully call, the letsDoThisAgain will not have anything to read, because the InputStream will be at the EOF.
#Override
protected Integer doInBackground(Void... params)
{
String readMyJSON = readMyJSON();
try {
JSONArray jsonArray = new JSONArray(readMyJSON);
} catch (Exception e) {
e.printStackTrace();
}
return 0;
}
This is not working, during JSONArray jsonArray = new JSONArray(readMyJSON);, JSONException occurs. Could somebody tell me where is the problem? Thanks in advance.
P.S.: Method I use:
public String readMyJSON()
{
StringBuilder builder = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet("http://search.twitter.com/search.json?q=android");
try {
HttpResponse response = client.execute(httpGet);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) {
builder.append(line);
}
} else {
Log.e(ParseJSON.class.toString(), "Failed to download file");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return builder.toString();
}
This method seems to be allright.
In short, the response from twitter is not an JSON array, so you get an exception. If you want the array of results, do the following:
JSONObject object = (JSONObject) new JSONTokener(json).nextValue();
JSONArray results = object.getJSONArray("results");
I suggest you read the Twitter API docs. Specifically, https://dev.twitter.com/docs/api/1/get/search.
Can you try this:
JSONArray jsonArray = new JSONArray("["+readMyJSON+"]");
I hope it should work.
I am creating an HttpPost object in Android to communicate with a server operated by a client. Unfortunately the server isn't providing either of us with very useful error messages; I would like to see the content of the HttpPost object as a string so I can send it to our client and he can compare it with what he's expecting.
How can I convert an HttpPost object into a string that reflects how it would look as it arrived at the server?
Should use it after execute
public static String httpPostToString(HttpPost httppost) {
StringBuilder sb = new StringBuilder();
sb.append("\nRequestLine:");
sb.append(httppost.getRequestLine().toString());
int i = 0;
for(Header header : httppost.getAllHeaders()){
if(i == 0){
sb.append("\nHeader:");
}
i++;
for(HeaderElement element : header.getElements()){
for(NameValuePair nvp :element.getParameters()){
sb.append(nvp.getName());
sb.append("=");
sb.append(nvp.getValue());
sb.append(";");
}
}
}
HttpEntity entity = httppost.getEntity();
String content = "";
if(entity != null){
try {
content = IOUtils.toString(entity.getContent());
} catch (Exception e) {
e.printStackTrace();
}
}
sb.append("\nContent:");
sb.append(content);
return sb.toString();
}
snippet
I usually do post in this way (The server answer is a JSON object) :
try {
postJSON.put("param1", param1);
postJSON.put("param2",param2);
} catch (JSONException e) {
e.printStackTrace();
}
String result = JSONGetHTTP.postData(url);
if (result != null) {
try {
JSONObject jObjec = new JSONObject(result);
}
} catch (JSONException e) {
Log.e(TAG, "Error setting data " + e.toString());
}
}
And postData is:
public static String postData(String url, JSONObject obj) {
// Create a new HttpClient and Post Header
HttpClient httpclient = null;
try {
HttpParams myParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(myParams, 30000);
HttpConnectionParams.setSoTimeout(myParams, 30000);
httpclient = new DefaultHttpClient(myParams);
} catch (Exception e) {
Log.e("POST_DATA", "error in httpConnection");
e.printStackTrace();
}
InputStream is = null;
try {
HttpPost httppost = new HttpPost(url.toString());
//Header here httppost.setHeader();
StringEntity se = new StringEntity(obj.toString());
httppost.setEntity(se);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
// // Do something with response...
is = entity.getContent();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// convert response to string
BufferedReader reader = null;
String result = null;
try {
reader = new BufferedReader(new InputStreamReader(is, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
Log.e("log_tag", "Error converting result " + e.toString());
} finally {
try {
if (reader != null)
reader.close();
if (is != null)
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (result != null) {
try {
#SuppressWarnings("unused")
JSONObject jObjec = new JSONObject(result);
} catch (JSONException e) {
Log.e("log_tag", "Error parsing data " + e.toString());
}
}
return result;
}
Hope it helps
Well i actually did HTTP-Post using NameValuePair...... I am showing the code which i use to do an HTTP-Post and then converting the Response into a String
See the below Method code:
public String postData(String url, String xmlQuery) {
final String urlStr = url;
final String xmlStr = xmlQuery;
final StringBuilder sb = new StringBuilder();
Thread t1 = new Thread(new Runnable() {
public void run() {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(urlStr);
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
nameValuePairs.add(new BasicNameValuePair("xml", xmlStr));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
Log.d("Vivek", response.toString());
HttpEntity entity = response.getEntity();
InputStream i = entity.getContent();
Log.d("Vivek", i.toString());
InputStreamReader isr = new InputStreamReader(i);
BufferedReader br = new BufferedReader(isr);
String s = null;
while ((s = br.readLine()) != null) {
Log.d("YumZing", s);
sb.append(s);
}
Log.d("Check Now",sb+"");
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
t1.start();
try {
t1.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("Getting from Post Data Method "+sb.toString());
return sb.toString();
}
I am not able to retrieve the data from the server. I am not sure where i have gone wrong in the code..When i run the application, the data from the server is not displayed on the emulator.. The code is given below
private void postData1(){
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(
"http://www.xxxxx.co.uk/NottTest/post.php");
JSONObject json = new JSONObject();
try {
// JSON data:
try {
json.put("name", "Fahmi Rahman");
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
json.put("position", "sysdev");
JSONArray postjson = new JSONArray();
postjson.put(json);
// Post the data:
httppost.setHeader("json", json.toString());
httppost.getParams().setParameter("jsonpost", postjson);
// Execute HTTP Post Request
System.out.print(json);
HttpResponse response = httpclient.execute(httppost);
tv.setText("Hiii");
// for JSON:
if (response != null)
{
Log.i("Json","respose");
System.out.print("loooooooooool");
InputStream is = response.getEntity().getContent();
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();
}
}
text = sb.toString();
}
else{
tv.setText("no respose");
Log.i("Noting","happended");
}
//tv.setText(text);
} catch (ClientProtocolException e) {
Log.i("Error","Prtocol");
} catch (IOException e) {
Log.i("Error","IO");
} catch (JSONException e) {
Log.i("Error","JOSON");
}
}
i think the error is in
try {
json.put("name", "Fahmi Rahman");
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
json.put("position", "sysdev");
JSONArray postjson = new JSONArray();