Jak dodać parametry do HttpURLConnection za pomocą POST używając NameValuePair
Próbuję zrobić POST z HttpURLConnection
(muszę użyć tego sposobu, nie mogę użyć HttpPost
) i chciałbym dodać parametry do tego połączenia, takie jak
post.setEntity(new UrlEncodedFormEntity(nvp));
Gdzie
nvp = new ArrayList<NameValuePair>();
Posiadanie niektórych danych przechowywanych w Nie mogę znaleźć sposobu, jak dodać to ArrayList
do mojego HttpURLConnection
, który jest tutaj:
HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
https.setHostnameVerifier(DO_NOT_VERIFY);
http = https;
http.setRequestMethod("POST");
http.setDoInput(true);
http.setDoOutput(true);
Powodem tej niewygodnej kombinacji https i http jest potrzeba nie weryfikowania certyfikatu. Nie jest to jednak problem, dobrze publikuje serwer. Ale potrzebuję to pisać z argumentami.
Jakieś pomysły?Duplicate Disclaimer:
W 2012 roku, nie miałem pojęcia, jak parametry zostały wstawione do HTTP POST request. Trzymałem się NameValuePair
, ponieważ było to w samouczku. To pytanie może wydawać się duplikatem, jednak mój 2012 sam przeczytałem, że inne pytanie i to było a nie za pomocą NameValuePair
. To nie rozwiązało mojego problemu.
15 answers
Można uzyskać strumień wyjściowy dla połączenia i zapisać do niego łańcuch zapytania parametru.
URL url = new URL("http://yoururl.com");
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("firstParam", paramValue1));
params.add(new BasicNameValuePair("secondParam", paramValue2));
params.add(new BasicNameValuePair("thirdParam", paramValue3));
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getQuery(params));
writer.flush();
writer.close();
os.close();
conn.connect();
...
private String getQuery(List<NameValuePair> params) throws UnsupportedEncodingException
{
StringBuilder result = new StringBuilder();
boolean first = true;
for (NameValuePair pair : params)
{
if (first)
first = false;
else
result.append("&");
result.append(URLEncoder.encode(pair.getName(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(pair.getValue(), "UTF-8"));
}
return result.toString();
}
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2014-02-24 12:25:13
Ponieważ NameValuePair jest przestarzały. Myślałem o udostępnieniu mojego kodu
public String performPostCall(String requestURL,
HashMap<String, String> postDataParams) {
URL url;
String response = "";
try {
url = new URL(requestURL);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(15000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getPostDataString(postDataParams));
writer.flush();
writer.close();
os.close();
int responseCode=conn.getResponseCode();
if (responseCode == HttpsURLConnection.HTTP_OK) {
String line;
BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
while ((line=br.readLine()) != null) {
response+=line;
}
}
else {
response="";
}
} catch (Exception e) {
e.printStackTrace();
}
return response;
}
....
private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException{
StringBuilder result = new StringBuilder();
boolean first = true;
for(Map.Entry<String, String> entry : params.entrySet()){
if (first)
first = false;
else
result.append("&");
result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
}
return result.toString();
}
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2015-10-02 02:38:47
Jeśli nie potrzebujesz ArrayList<NameValuePair>
dla parametrów, jest to krótsze rozwiązanie, które buduje łańcuch zapytania za pomocą klasy Uri.Builder
:
URL url = new URL("http://yoururl.com");
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
Uri.Builder builder = new Uri.Builder()
.appendQueryParameter("firstParam", paramValue1)
.appendQueryParameter("secondParam", paramValue2)
.appendQueryParameter("thirdParam", paramValue3);
String query = builder.build().getEncodedQuery();
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(query);
writer.flush();
writer.close();
os.close();
conn.connect();
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2015-06-19 07:49:27
Jednym z rozwiązań jest stworzenie własnego ciągu params.
To jest właściwa metoda, której używam w moim najnowszym projekcie. Musisz zmienić args z hashtable na namevaluepair ' s:
private static String getPostParamString(Hashtable<String, String> params) {
if(params.size() == 0)
return "";
StringBuffer buf = new StringBuffer();
Enumeration<String> keys = params.keys();
while(keys.hasMoreElements()) {
buf.append(buf.length() == 0 ? "" : "&");
String key = keys.nextElement();
buf.append(key).append("=").append(params.get(key));
}
return buf.toString();
}
Wstawianie paramów:
OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
writer.write(getPostParamString(req.getPostParams()));
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2018-03-15 03:29:05
Myślę, że znalazłem dokładnie to, czego potrzebujesz. Może pomóc innym.
Możesz użyć metody UrlEncodedFormEntity.writeTo (OutputStream) .
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nvp);
http.connect();
OutputStream output = null;
try {
output = http.getOutputStream();
formEntity.writeTo(output);
} finally {
if (output != null) try { output.close(); } catch (IOException ioe) {}
}
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2012-08-16 14:40:59
Zaakceptowana odpowiedź rzuca na:
OutputStream os = conn.getOutputStream();
Ponieważ nie umożliwia wyjścia dla obiektu URLConnection. Rozwiązanie powinno zawierać:
conn.setDoOutput(true);
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2015-09-04 09:08:46
Jeśli nie jest za późno, chciałbym podzielić się moim kodem
Utils.java:
public static String buildPostParameters(Object content) {
String output = null;
if ((content instanceof String) ||
(content instanceof JSONObject) ||
(content instanceof JSONArray)) {
output = content.toString();
} else if (content instanceof Map) {
Uri.Builder builder = new Uri.Builder();
HashMap hashMap = (HashMap) content;
if (hashMap != null) {
Iterator entries = hashMap.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
builder.appendQueryParameter(entry.getKey().toString(), entry.getValue().toString());
entries.remove(); // avoids a ConcurrentModificationException
}
output = builder.build().getEncodedQuery();
}
}
return output;
}
public static URLConnection makeRequest(String method, String apiAddress, String accessToken, String mimeType, String requestBody) throws IOException {
URL url = new URL(apiAddress);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoInput(true);
urlConnection.setDoOutput(!method.equals("GET"));
urlConnection.setRequestMethod(method);
urlConnection.setRequestProperty("Authorization", "Bearer " + accessToken);
urlConnection.setRequestProperty("Content-Type", mimeType);
OutputStream outputStream = new BufferedOutputStream(urlConnection.getOutputStream());
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, "utf-8"));
writer.write(requestBody);
writer.flush();
writer.close();
outputStream.close();
urlConnection.connect();
return urlConnection;
}
Główna aktywność.java:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new APIRequest().execute();
}
private class APIRequest extends AsyncTask<Void, Void, String> {
@Override
protected Object doInBackground(Void... params) {
// Of course, you should comment the other CASES when testing one CASE
// CASE 1: For FromBody parameter
String url = "http://10.0.2.2/api/frombody";
String requestBody = Utils.buildPostParameters("'FromBody Value'"); // must have '' for FromBody parameter
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) Utils.makeRequest("POST", url, null, "application/json", requestBody);
InputStream inputStream;
// get stream
if (urlConnection.getResponseCode() < HttpURLConnection.HTTP_BAD_REQUEST) {
inputStream = urlConnection.getInputStream();
} else {
inputStream = urlConnection.getErrorStream();
}
// parse stream
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String temp, response = "";
while ((temp = bufferedReader.readLine()) != null) {
response += temp;
}
return response;
} catch (IOException e) {
e.printStackTrace();
return e.toString();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
// CASE 2: For JSONObject parameter
String url = "http://10.0.2.2/api/testjsonobject";
JSONObject jsonBody;
String requestBody;
HttpURLConnection urlConnection;
try {
jsonBody = new JSONObject();
jsonBody.put("Title", "BNK Title");
jsonBody.put("Author", "BNK");
jsonBody.put("Date", "2015/08/08");
requestBody = Utils.buildPostParameters(jsonBody);
urlConnection = (HttpURLConnection) Utils.makeRequest("POST", url, null, "application/json", requestBody);
...
// the same logic to case #1
...
return response;
} catch (JSONException | IOException e) {
e.printStackTrace();
return e.toString();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
// CASE 3: For form-urlencoded parameter
String url = "http://10.0.2.2/api/token";
HttpURLConnection urlConnection;
Map<String, String> stringMap = new HashMap<>();
stringMap.put("grant_type", "password");
stringMap.put("username", "username");
stringMap.put("password", "password");
String requestBody = Utils.buildPostParameters(stringMap);
try {
urlConnection = (HttpURLConnection) Utils.makeRequest("POST", url, null, "application/x-www-form-urlencoded", requestBody);
...
// the same logic to case #1
...
return response;
} catch (Exception e) {
e.printStackTrace();
return e.toString();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
}
@Override
protected void onPostExecute(String response) {
super.onPostExecute(response);
// do something...
}
}
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2015-12-08 01:22:40
Jest o wiele łatwiejsze podejście przy użyciu drukarki (zobacz Tutaj )
W zasadzie wszystko czego potrzebujesz to:
// set up URL connection
URL urlToRequest = new URL(urlStr);
HttpURLConnection urlConnection = (HttpURLConnection)urlToRequest.openConnection();
urlConnection.setDoOutput(true);
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
// write out form parameters
String postParamaters = "param1=value1¶m2=value2"
urlConnection.setFixedLengthStreamingMode(postParameters.getBytes().length);
PrintWriter out = new PrintWriter(urlConnection.getOutputStream());
out.print(postParameters);
out.close();
// connect
urlConnection.connect();
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2016-02-10 15:19:40
AsyncTask
wysyłanie danych jako JSONObect
metodą POST
public class PostMethodDemo extends AsyncTask<String , Void ,String> {
String server_response;
@Override
protected String doInBackground(String... strings) {
URL url;
HttpURLConnection urlConnection = null;
try {
url = new URL(strings[0]);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.setRequestMethod("POST");
DataOutputStream wr = new DataOutputStream(urlConnection.getOutputStream ());
try {
JSONObject obj = new JSONObject();
obj.put("key1" , "value1");
obj.put("key2" , "value2");
wr.writeBytes(obj.toString());
Log.e("JSON Input", obj.toString());
wr.flush();
wr.close();
} catch (JSONException ex) {
ex.printStackTrace();
}
urlConnection.connect();
int responseCode = urlConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
server_response = readStream(urlConnection.getInputStream());
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
Log.e("Response", "" + server_response);
}
}
public static String readStream(InputStream in) {
BufferedReader reader = null;
StringBuffer response = new StringBuffer();
try {
reader = new BufferedReader(new InputStreamReader(in));
String line = "";
while ((line = reader.readLine()) != null) {
response.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return response.toString();
}
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2016-07-11 18:28:09
Spróbuj tego:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("your url");
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("user_name", "Name"));
nameValuePairs.add(new BasicNameValuePair("pass","Password" ));
nameValuePairs.add(new BasicNameValuePair("user_email","email" ));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
String ret = EntityUtils.toString(response.getEntity());
Log.v("Util response", ret);
Możesz dodać tyle nameValuePairs
Ile potrzebujesz. I nie zapomnij wspomnieć o liczbie na liście.
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2012-12-09 07:15:47
Za pomocą org.Apacz.http.klient.HttpClient można również łatwo zrobić to w bardziej czytelny sposób, jak poniżej.
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
Wewnątrz try catch możesz wstawić
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
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2012-03-19 10:01:52
Aby wywołać metody POST/PUT/DELETE/GET Restful z niestandardowym nagłówkiem lub danymi json, można użyć następującej klasy Async
public class HttpUrlConnectionUtlity extends AsyncTask<Integer, Void, String> {
private static final String TAG = "HttpUrlConnectionUtlity";
Context mContext;
public static final int GET_METHOD = 0,
POST_METHOD = 1,
PUT_METHOD = 2,
HEAD_METHOD = 3,
DELETE_METHOD = 4,
TRACE_METHOD = 5,
OPTIONS_METHOD = 6;
HashMap<String, String> headerMap;
String entityString;
String url;
int requestType = -1;
final String timeOut = "TIMED_OUT";
int TIME_OUT = 60 * 1000;
public HttpUrlConnectionUtlity (Context mContext) {
this.mContext = mContext;
this.callback = callback;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected String doInBackground(Integer... params) {
int requestType = getRequestType();
String response = "";
try {
URL url = getUrl();
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection = setRequestMethod(urlConnection, requestType);
urlConnection.setConnectTimeout(TIME_OUT);
urlConnection.setReadTimeout(TIME_OUT);
urlConnection.setDoOutput(true);
urlConnection = setHeaderData(urlConnection);
urlConnection = setEntity(urlConnection);
if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
response = readResponseStream(urlConnection.getInputStream());
Logger.v(TAG, response);
}
urlConnection.disconnect();
return response;
} catch (ProtocolException e) {
e.printStackTrace();
} catch (SocketTimeoutException e) {
return timeOut;
} catch (IOException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
Logger.e(TAG, "ALREADY CONNECTED");
}
return response;
}
@Override
protected void onPostExecute(String response) {
super.onPostExecute(response);
if (TextUtils.isEmpty(response)) {
//empty response
} else if (response != null && response.equals(timeOut)) {
//request timed out
} else {
//process your response
}
}
private String getEntityString() {
return entityString;
}
public void setEntityString(String s) {
this.entityString = s;
}
private String readResponseStream(InputStream in) {
BufferedReader reader = null;
StringBuffer response = new StringBuffer();
try {
reader = new BufferedReader(new InputStreamReader(in));
String line = "";
while ((line = reader.readLine()) != null) {
response.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return response.toString();
}
private HttpURLConnection setEntity(HttpURLConnection urlConnection) throws IOException {
if (getEntityString() != null) {
OutputStream outputStream = urlConnection.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
writer.write(getEntityString());
writer.flush();
writer.close();
outputStream.close();
} else {
Logger.w(TAG, "NO ENTITY DATA TO APPEND ||NO ENTITY DATA TO APPEND ||NO ENTITY DATA TO APPEND");
}
return urlConnection;
}
private HttpURLConnection setHeaderData(HttpURLConnection urlConnection) throws UnsupportedEncodingException {
urlConnection.setRequestProperty("Content-Type", "application/json");
urlConnection.setRequestProperty("Accept", "application/json");
if (getHeaderMap() != null) {
for (Map.Entry<String, String> entry : getHeaderMap().entrySet()) {
urlConnection.setRequestProperty(entry.getKey(), entry.getValue());
}
} else {
Logger.w(TAG, "NO HEADER DATA TO APPEND ||NO HEADER DATA TO APPEND ||NO HEADER DATA TO APPEND");
}
return urlConnection;
}
private HttpURLConnection setRequestMethod(HttpURLConnection urlConnection, int requestMethod) {
try {
switch (requestMethod) {
case GET_METHOD:
urlConnection.setRequestMethod("GET");
break;
case POST_METHOD:
urlConnection.setRequestMethod("POST");
break;
case PUT_METHOD:
urlConnection.setRequestMethod("PUT");
break;
case DELETE_METHOD:
urlConnection.setRequestMethod("DELETE");
break;
case OPTIONS_METHOD:
urlConnection.setRequestMethod("OPTIONS");
break;
case HEAD_METHOD:
urlConnection.setRequestMethod("HEAD");
break;
case TRACE_METHOD:
urlConnection.setRequestMethod("TRACE");
break;
}
} catch (ProtocolException e) {
e.printStackTrace();
}
return urlConnection;
}
public int getRequestType() {
return requestType;
}
public void setRequestType(int requestType) {
this.requestType = requestType;
}
public URL getUrl() throws MalformedURLException {
return new URL(url);
}
public void setUrl(String url) {
this.url = url;
}
public HashMap<String, String> getHeaderMap() {
return headerMap;
}
public void setHeaderMap(HashMap<String, String> headerMap) {
this.headerMap = headerMap;
} }
A użycie to
HttpUrlConnectionUtlity httpMethod = new HttpUrlConnectionUtlity (mContext);
JSONObject jsonEntity = new JSONObject();
try {
jsonEntity.put("key1", value1);
jsonEntity.put("key2", value2);
} catch (JSONException e) {
e.printStackTrace();
}
httpMethod.setUrl(YOUR_URL_STRING);
HashMap<String, String> headerMap = new HashMap<>();
headerMap.put("key",value);
headerMap.put("key1",value1);
httpMethod.setHeaderMap(headerMap);
httpMethod.setRequestType(WiseConnectHttpMethod.POST_METHOD); //specify POST/GET/DELETE/PUT
httpMethod.setEntityString(jsonEntity.toString());
httpMethod.execute();
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2016-01-19 16:54:47
Używam czegoś takiego:
....
SchemeRegistry sR = new SchemeRegistry();
sR.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443));
HttpParams params = new BasicHttpParams();
SingleClientConnManager mgr = new SingleClientConnManager(params, sR);
HttpClient httpclient = new DefaultHttpClient(mgr, params);
HttpPost httppost = new HttpPost(url);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
......
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2012-03-19 10:00:12
W moim przypadku stworzyłem taką funkcję, aby wysłać żądanie Post, które pobiera ciąg url i hashmap parametrów
public String postRequest( String mainUrl,HashMap<String,String> parameterList)
{
String response="";
try {
URL url = new URL(mainUrl);
StringBuilder postData = new StringBuilder();
for (Map.Entry<String, String> param : parameterList.entrySet())
{
if (postData.length() != 0) postData.append('&');
postData.append(URLEncoder.encode(param.getKey(), "UTF-8"));
postData.append('=');
postData.append(URLEncoder.encode(String.valueOf(param.getValue()), "UTF-8"));
}
byte[] postDataBytes = postData.toString().getBytes("UTF-8");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", String.valueOf(postDataBytes.length));
conn.setDoOutput(true);
conn.getOutputStream().write(postDataBytes);
Reader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
StringBuilder sb = new StringBuilder();
for (int c; (c = in.read()) >= 0; )
sb.append((char) c);
response = sb.toString();
return response;
}catch (Exception excep){
excep.printStackTrace();}
return response;
}
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2016-05-22 06:02:19
JSONObject params = new JSONObject();
try {
params.put(key, val);
}catch (JSONException e){
e.printStackTrace();
}
Tak przechodzę "params" (JSONObject) przez POST
connection.getOutputStream().write(params.toString().getBytes("UTF-8"));
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2016-07-13 09:08:15