How can I get the data this method is forwarding to a PHP webpage ?
URL url;
HttpURLConnection connect = null;
BufferedReader rd;
StringBuilder sb;
OutputStreamWriter wr;
// Change this url to the url of your receiveJsonSms.php.
String urlString = "http://www.paintedostrich.com/receiveJsonSms.php";
try {
System.setProperty("http.keepAlive", "false");
url = new URL(urlString);
connect = (HttpURLConnection) url.openConnection();
connect.setRequestMethod("POST");
connect.setDoOutput(true);
connect.setDoInput(true);
connect.setReadTimeout(10000);
connect.connect();
// write to the stream
String data = URLEncoder.encode("texts", "UTF-8") + "="
+ URLEncoder.encode(jsonTexts.toString(), "UTF-8");
wr = new OutputStreamWriter(connect.getOutputStream());
wr.write(data);
wr.flush();
// read the result from the server
rd = new BufferedReader(new InputStreamReader(connect.getInputStream()));
sb = new StringBuilder();
String line = null;
while ((line = rd.readLine()) != null) {
sb.append(line);
}`
To decode json in PHP use json_decode().
<?php
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';
var_dump(json_decode($json));
var_dump(json_decode($json, true));
?>
I think the answer is
sb.ToString();
thats the data you get from the server if you want to read the JSON use this
http://www.codeproject.com/Tips/397574/Use-Csharp-to-get-JSON-data-from-the-web-and-map-i
Related
I want to fetch the content of $_POST variable from a PHP hosted file into Android app. I have tried using Jsoup and Volley libraries to do this but they were not producing the expected result. Later, found out that echo ("anyString"); is being fetched to android but echo($_POST["orderId"]); is not being fetched even though it gets printed in web page. Is there any way of solving this issue?
This is the PHP code:
<?php
$secretkey = "7457645673urgjnjkf784jyj66545y";
$orderId = $_POST["orderId"];
$orderAmount = $_POST["orderAmount"];
$referenceId = $_POST["referenceId"];
$txStatus = $_POST["txStatus"];
$paymentMode = $_POST["paymentMode"];
$txMsg = $_POST["txMsg"];
$txTime = $_POST["txTime"];
$signature = $_POST["signature"];
$data = $orderId.$orderAmount.$referenceId.$txStatus.$paymentMode.$txMsg.$txTime;
$hash_hmac = hash_hmac('sha256', $data, $secretkey, true) ;
$computedSignature = base64_encode($hash_hmac);
if ($signature == $computedSignature) {
echo json_encode($_POST);
}
?>
The java code in Android:
URL link = new URL("https://sample.php");
HttpURLConnection conn;
conn = (HttpURLConnection) link.openConnection();
conn.setReadTimeout(READ_TIMEOUT);
conn.setConnectTimeout(CONNECTION_TIMEOUT);
conn.setRequestMethod("POST");
conn.setDoOutput(true);
int response_code = conn.getResponseCode();
// Check if successful connection made
if (response_code == HttpURLConnection.HTTP_OK) {
// Read data sent from server
InputStream input = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(input));
StringBuilder result = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
result.append(line);
}
Log.d("result", result.toString());
}
}catch (Exception e){
Log.d("result", e.toString());
}
I have a method in Java where I try to get one integer (user id) through a POST json request, this is the method:
public static Integer getUserIdOwnerOfMsg(Message msg) {
Integer idUser = null;
try {
JSONObject jsonObject = new JSONObject();
jsonObject.put("textMsg", msg.getTextMsg());
jsonObject.put("hourMsg", msg.getHourMsg());
List list = new LinkedList();
list.addAll(Arrays.asList(jsonObject));
String jsonString = list.toString();
String urlStr = SERVER_PATH + "getUserIdOwnerOfMsgJSON.php";
URL url = new URL(urlStr);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("User-Agent", "your user agent");
con.setRequestProperty("Accept-Language", "sp,SP;q=0.5");
//con.setRequestProperty("Content-Type", "text/html; charset=UTF-8");
String urlParameters = "json=" + jsonString;
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
InputStream instream;
int status = con.getResponseCode();
if (status != HttpURLConnection.HTTP_OK)
instream = con.getErrorStream();
else
instream = con.getInputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(instream, "UTF-8")); // ISO-8859-1
in.mark(1);
if(in.read() != 0xFEFF)
in.reset();
String inputLine;
StringBuilder response = new StringBuilder();
while((inputLine = in.readLine()) != null)
response.append(inputLine);
in.close();
JSONObject object = new JSONObject(response.toString());
Boolean correct = object.getBoolean("correct");
if (correct) {
idUser = object.getInt("id");
}
} catch (Exception e) {
e.printStackTrace();
}
return idUser;
}
The problem is that the response contains a UTF-8 BOM character, on postman the result it's ok and I can see the id: ({"id":"7","correct":true})
But debugging on android studio I got the value "" or null for idUser, I don't know why, I've tried so many ways to resolve this problem without succeed.
Also on the php server side I've executed echo mb_detect_encoding($idUsuario); and I got ASCII encoding in case that could help to find the solution.
Any help will be apreciated, thank you!
So finally I got the solution, I post it here in case someone have the same issue as me, the problem was with the parameters of the JSON, because they included UTF-8 characters like €, so instead of reading the parameters like this:
wr.writeBytes (urlParameters);
I have to do this:
byte[] buf = urlParameters.getBytes("UTF-8");
wr.write(buf, 0, buf.length);
I post also the complete function in case someone needs it:
public static Integer getUserIdOwnerOfMsg(Message msg) {
Integer idUser = null;
try {
JSONObject jsonObject = new JSONObject();
jsonObject.put("textMsg", msg.getTextMsg());
jsonObject.put("hourMsg", msg.getHourMsg());
List list = new LinkedList();
list.addAll(Arrays.asList(jsonObject));
String jsonString = list.toString();
String urlStr = SERVER_PATH + "getUserIdOwnerOfMsgJSON.php";
URL url = new URL(urlStr);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("User-Agent", "your user agent");
con.setRequestProperty("Accept-Language", "sp,SP;q=0.5");
String urlParameters = "json=" + jsonString;
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream (con.getOutputStream());
byte[] buf = urlParameters.getBytes("UTF-8");
wr.write(buf, 0, buf.length);
wr.flush();
wr.close();
InputStream instream;
int status = con.getResponseCode();
if (status != HttpURLConnection.HTTP_OK)
instream = con.getErrorStream();
else
instream = con.getInputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(instream, Charset.forName("UTF-8")),8192);
String inputLine;
StringBuilder response = new StringBuilder();
while((inputLine = in.readLine()) != null)
response.append(inputLine);
JSONObject object = new JSONObject(response.toString());
Boolean correct = object.getBoolean("correct");
if (correct) {
try {
String idUserText = object.getString("id");
idUser = Integer.valueOf(idUserText);
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
in.close();
} catch (Exception e) {
e.printStackTrace();
}
return idUser;
}
That's all, happy coding!
In my project, I'm sending data from an android device and it is inserted into a database using a php script. But the same data is inserted twice. (please see here)
What is wrong with my code?
Android:
try {
String data=URLEncoder.encode("name", "UTF-8")+"="+URLEncoder.encode(Name, "UTF-8");
data+="&"+URLEncoder.encode("family", "UTF-8")+"="+URLEncoder.encode(Family, "UTF-8");
data+="&"+URLEncoder.encode("city", "UTF-8")+"="+URLEncoder.encode(City, "UTF-8");
data+="&"+URLEncoder.encode("ostan", "UTF-8")+"="+URLEncoder.encode(Ostan, "UTF-8");
data+="&"+URLEncoder.encode("tel", "UTF-8")+"="+URLEncoder.encode(Tel, "UTF-8");
data+="&"+URLEncoder.encode("sef", "UTF-8")+"="+URLEncoder.encode(sef1, "UTF-8");
data+="&"+URLEncoder.encode("bod", "UTF-8")+"="+URLEncoder.encode(bodjeh1, "UTF-8");
data+="&"+URLEncoder.encode("tab", "UTF-8")+"="+URLEncoder.encode(tabgh, "UTF-8");
data+="&"+URLEncoder.encode("img", "UTF-8")+"="+URLEncoder.encode(imgs, "UTF-8");
data+="&"+URLEncoder.encode("imgf", "UTF-8")+"="+URLEncoder.encode(fimage, "UTF-8");
URL link=new URL(MainActivity.url+"/app/order.php");
URLConnection con=link.openConnection();
con.setDoOutput(true);
OutputStreamWriter wrw=new OutputStreamWriter(con.getOutputStream());
wrw.write(data);
wrw.flush();
BufferedReader br=new BufferedReader(new InputStreamReader(con.getInputStream()));
StringBuilder sb=new StringBuilder();
String l="";
while((l=br.readLine())!=null){
sb.append(l);
}
r=sb.toString();
br.close();
Code for insertion - php
$name=$_POST['name'];
$family_name=$_POST['family'];
$city=$_POST['city'];
$ostan=$_POST['ostan'];
$tel=$_POST['tel'];
$comment=$_POST['sef'];
$bod=$_POST['bod'];
$tab=$_POST['tab'];
$img=$_POST['img'];
$imgf=$_POST['imgf'];
$sql="INSERT INTO `customer_table`(`id`, `name`, `family_name`, `city`, `ostan`, `tel`, `comment`,`bodjeh`,`tabagheh`,`imag_f`,`image`)
VALUES ('','$name','$family_name','$city','$ostan','$tel','$comment','$bod','$tab','$imgf','$img')";
Please use below method to send data to server
First convert your request json into simple map like
Map<String, String> map = new HashMap<>();
map.put("name", Name);.....so on
Then use below method to call the Webservice.
private JSONObject sendRequest(String urlString, Map<String, String> map, String fileKey, File file) {
StringBuilder strData= null;
JSONObject resObj = null;
try {
Log.i("Send request", urlString+"="+map);
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(50000);
conn.setConnectTimeout(50000);
conn.setRequestMethod("POST");
conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);
if(map == null)
{
map = new HashMap<>();
}
MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
for (HashMap.Entry<String, String> entry : map.entrySet()) {
String k = entry.getKey();
String v = entry.getValue();
reqEntity.addPart(k, new StringBody(v));
}
if(file != null && !TextUtils.isEmpty(fileKey))
{
FileBody filebody = new FileBody(file, "image/*");
reqEntity.addPart(fileKey, filebody);
}
conn.setRequestProperty("Connection", "Keep-Alive");
conn.addRequestProperty("Content-length", reqEntity.getContentLength() + "");
conn.addRequestProperty(reqEntity.getContentType().getName(), reqEntity.getContentType().getValue());
OutputStream os = conn.getOutputStream();
reqEntity.writeTo(os);
os.close();
conn.connect();
if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String sResponse;
strData = new StringBuilder();
while ((sResponse = reader.readLine()) != null) {
strData = strData.append(sResponse);
}
}
if(strData != null)
resObj = new JSONObject(strData.toString());
} catch (Exception e) {
e.printStackTrace();
}
return resObj;
}
As your php code you need to do :
$result = mysql_query($sql);
if(count($result) > 0)
{
echo "1";
}else
{
echo "0";
}
I'm wondering what the format of a json is suppose to be since it seems php and android has two different types.
When encode the php, it looks like this:
{"id":8435,"name":"Sears"}
{"id":8436,"name":"Sears Appliance Services"}
But when I try to decode in android. It comes out as one big string in android (because it's just viewing the source code of the php page).
This is the code:
Php:
echo json_encode($results[$i]);
Android:
url = new URL("site");
String param = "arg1=" + URLEncoder.encode("value1", "UTF-8");
conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setFixedLengthStreamingMode(param.getBytes().length);
conn.setRequestProperty("Content-Type","application/x-www-form- urlencoded");
PrintWriter out = new PrintWriter(conn.getOutputStream());
out.print(param);
out.close();
InputStream is = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String s;
while ((s = reader.readLine()) != null) {
result += s;
}
JSONObject jObject = new JSONObject(result);
I am returning a JSON string from PHP:
<?php
$results = array(
"result" => "success",
"username" => "some username",
"projects" => "some other value"
);
echo json_encode($results);
?>
I found a java example online that works. It uses StringBuilder and outputs the response using Toast. I want to actually parse it as a JSON object so I can reference each key=>value, but not sure how to do it. This is the example I am using:
private void tryLogin(String usernameInput, String passwordInput)
{
HttpURLConnection connection;
OutputStreamWriter request = null;
URL url = null;
String response = null;
String parameters = "username=" + usernameInput + "&password=" + passwordInput;
try
{
url = new URL(getString(R.string.loginLocation));
connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestMethod("POST");
request = new OutputStreamWriter(connection.getOutputStream());
request.write(parameters);
request.flush();
request.close();
String line = "";
InputStreamReader isr = new InputStreamReader(connection.getInputStream());
BufferedReader reader = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
response = sb.toString();
Toast.makeText(this, "Message from server: \n" + response, 0).show();
isr.close();
reader.close();
}
catch(IOException e)
{
Log.i("NetworkTest","Network Error: " + e);
}
}
This is what the code currently returns:
05-04 19:19:54.724: INFO/NetworkTest(1061): {"result":"success","username":"rondog","projects":"1,2"}
Just to be clear, I am pretty sure I know how to parse the string. What I am confused on is getting the response back from the server and pushing that to the JSONObject (or is 'response' the object that I pass?). Any help is appreciated, thanks!
(or is 'response' the object that I pass?)
Yes, it is. It expects a string object in it's constructor to parse it.