When using Facebook Graph API to send some notification to my users, it delivers scrambled to them, like so:
Here is my code:
public void sendFBNotificationByUserID(Guid userID, string msg, string url)
{
try
{
// Facebook information from the user
FacebookUser fbUser = getFacebookUserByUserID(userID);
using (WebClient wc = new WebClient())
{
// Retrieve "App Access Token" from Facebook
string appAccessToken = wc.DownloadString("https://graph.facebook.com/oauth/access_token?client_id=" + Global.fbAppID + "&client_secret=" + Global.fbAppSecret + "&grant_type=client_credentials");
// Create POST parameters
string POSTparam = "template=" + msg + "&href=" + url + "&" + appAccessToken;
// POST to Facebook Graph API to send notification
wc.UploadString("https://graph.facebook.com/" + fbUser.facebookID + "/notifications/", POSTparam);
}
}
catch (Exception)
{
}
}
Any idea?
EDIT:
I did a little reading about URL Encoding and this code solved my problem:
msg = HttpUtility.UrlEncode(msg);
This could be because of the encoding of your page. Some characters get scrambled if they aren't encoded properly. Maybe try using UTF-8 or something else.
Best I could think of.
Related
My question is about a strange behavious I notice both on my iPhone device and the codenameone simulator (NetBeans).
I invoke the following code below which calls a google web service to provide a list of food places around a GPS coordinate:
The web service that is called is as follows (KEY OBSCURED):
https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=40.714353,-74.00597299999998&radius=200&types=food&key=XXXXXXXXXXXXXXXXXXXXXXX
Each result contains the next page token and thus, the second call (for the subsequent page) is as follows:
https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=40.714353,-74.00597299999998&radius=200&types=food&key=XXXXXXXXXXXXXXXXXXXXXXX&pagetoken=YYYYYYYYYYYYYYYYYY
public static byte[] getWSResponseData(String urlString, boolean usePost)
{
ConnectionRequest r = new ConnectionRequest();
r.setUrl(urlString);
r.setPost(usePost);
InfiniteProgress prog = new InfiniteProgress();
Dialog dlg = prog.showInifiniteBlocking();
r.setDisposeOnCompletion(dlg);
NetworkManager.getInstance().addToQueueAndWait(r);
try
{
Thread.sleep(2000);
}
catch (InterruptedException ex)
{
}
byte[] responseData = r.getResponseData();
return responseData;
}
public static void getLocationsList(double lat, double lng)
{
boolean done = false;
while (!done)
{
byte[] responseData = getWSResponseData(finalURL,false);
result = Result.fromContent(parser.parseJSON(new InputStreamReader(new ByteArrayInputStream(responseData))));
String venueNames[] = result.getAsStringArray("/results/name");
nextToken = result.getAsString("/next_page_token");
if ( nextToken == null || nextToken.equals(""))
done = true;
else
finalURL = completeURL + "&pagetoken=" + nextToken;
}
.....
}
This code works fine with the sleep timer, but when I remove the Thread.sleep, only the first page gets called.
Any help would be appreciated.
Using the debugger does not help as this is a timing issue and the issue does not occur when using the debugger.
Also when I put some print statements into the code
while (!done)
{
String nextToken = null;
**System.out.println(finalURL);**
...
}
System.out.println("Total Number of entries returned: " + itemCount);
I get the following output:
First Run (WITHOUT SLEEP):
https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=40.714353,-74.00597299999998&radius=200&types=food&key=XXXXXXXX
https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=40.714353,-74.00597299999998&radius=200&types=food&key=XXXXXXXX&pagetoken=CqQCF...
Total Number of entries returned: 20
Using the network monitor I see that the response to the second WS call returns:
{
"html_attributions" : [],
"results" : [],
"status" : "INVALID_REQUEST"
}
Which is strange as when I cut and paste the WS URL into my browser, it works fine...
Second Run (WITH SLEEP):
https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=40.714353,-74.00597299999998&radius=200&types=food&key=XXXXXXXXX
https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=40.714353,-74.00597299999998&radius=200&types=food&key=XXXXXXXXX&pagetoken=CqQCFQEAA...
https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=40.714353,-74.00597299999998&radius=200&types=food&key=XXXXXXXXX&pagetoken=CsQDtQEAA...
Total Number of entries returned: 60
Well it seems to be a google API issue as indicated here:
Paging on Google Places API returns status INVALID_REQUEST
I still could not get it to work by changing the WS URL with a random parameter as they suggested, but I will keep trying and post something here if I get it to work. For now I will just keep a 2 second delay between the calls which seems to work.
Well gave up on using the google WS for this and switched to Yelp, works very well:
https://api.yelp.com/v3/businesses/search?.....
I am calling a BPM web service that sends HTML email. I generated a web service proxy in JDeveloper 11.1.1.7. The type of the body of the email is xsd:string which should map to java String. I understand that certain characters, for example < > &, are reserved and converted during the xml document creation during the proxy operation.
Using SOAPUI to call the service, I can pass the body as <h1>My Heading</h1> and service responds correctly, sending the email with HTML as expected. When doing the same from a POJO that calls the proxy, <h1> is converted to <h1>My heading</h1>.
I have tried passing the body as a CDATA section but this makes no difference. I have tried converting the body to bytes then back to a UTF-8 string before the call but still no difference. I have access to the BPM service code. Is there a way I can send html to the service from a proxy, that retains the special characters?
I figured this out finally. While the JDeveloper web service proxy generator is useful most of the time, in this case it was not since I needed to send xml special characters to the service. Perhaps there is a way to manipulate the proxy code to do what you want but I couldn't figure it out.
Of particular help was this AMIS blog entry. And if you ever need to handle special characters during JAXB marshalling, this entry will help you too. A great summary of the steps to use the java URLConnection class is here and that answer points to a library that would probably make life even easier.
So here is the raw wrapper code below. The particular BPM email service we wrote also writes to a log and that explains the complex types in the raw xml input. Naturally I will populate the email values from a passed in POJO object in the main sendMail wrapper method.
package com.yourdomain.sendmail.methods;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import oracle.adf.model.connection.url.URLConnectionProxy;
import oracle.adf.share.ADFContext;
public class SendMailWrapper {
public SendMailWrapper() {
super();
}
public static void main(String[] args) throws MalformedURLException, IOException {
SendMailWrapper w = new SendMailWrapper();
w.sendMail();
}
public void sendMail() throws MalformedURLException, IOException {
String xmlInput =
"<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" " +
"xmlns:sen=\"http://xmlns.oracle.com/bpmn/bpmnProcess/SendEmailProcess\" " +
"xmlns:ema=\"http://www.wft.com/BPM/SendEmail/Email\">\n" +
"<soapenv:Header/>" +
"<soapenv:Body>\n" +
"<sen:start>\n" +
"<ema:emailInput>\n" +
"<ema:emailContent>\n" +
"<ema:toAddr>your.name#yourdomain.com</ema:toAddr>\n" +
"<ema:fromAddr></ema:fromAddr>\n" +
"<ema:ccAddr></ema:ccAddr>\n" +
"<ema:bccAddr></ema:bccAddr>\n" +
"<ema:subject>SendMail HTML</ema:subject>\n" +
"<ema:body><h1>My Heading</h1><p>Text</p></ema:body>\n" +
"<ema:contentType>text/html</ema:contentType>\n" +
"</ema:emailContent>\n" +
"<ema:emailHistory>\n" +
"<ema:projectName>Soap Test</ema:projectName>\n" +
"<ema:reqID></ema:reqID>\n" +
"<ema:compositeID></ema:compositeID>\n" +
"<ema:processID></ema:processID>\n" +
"<ema:processName></ema:processName>\n" +
"<ema:activityName></ema:activityName>\n" +
"<ema:insertDate></ema:insertDate>\n" +
"<ema:insertByID></ema:insertByID>\n" +
"<ema:insertByName></ema:insertByName>\n" +
"<ema:commentType></ema:commentType>\n" +
"<ema:commentInfo></ema:commentInfo>\n" +
"</ema:emailHistory>\n" +
"</ema:emailInput>\n" +
"</sen:start>\n" +
"</soapenv:Body>\n" +
"</soapenv:Envelope>\n";
System.out.println(xmlInput);
String wsURL = getWsdlUrl();
URL url = new URL(wsURL);
URLConnection connection = url.openConnection();
HttpURLConnection httpConn = (HttpURLConnection)connection;
ByteArrayOutputStream bout = new ByteArrayOutputStream();
byte[] buffer = new byte[xmlInput.length()];
buffer = xmlInput.getBytes();
bout.write(buffer);
byte[] b = bout.toByteArray();
String SOAPAction = "start"; //this is the method in the service
httpConn.setRequestProperty("Content-Length", String.valueOf(b.length));
httpConn.setRequestProperty("Content-Type", "text/xml;charset=UTF-8");
//some other props available but don't need to be set...
//httpConn.setRequestProperty("Accept-Encoding", "gzip,deflate");
//httpConn.setRequestProperty("Host", "your.host.com:80");
//httpConn.setRequestProperty("Connection", "Keep-Alive");
//httpConn.setRequestProperty("User-Agent", "Apache-HttpClient/4.1.1 (java 1.5)");
httpConn.setRequestProperty("SOAPAction", SOAPAction);
httpConn.setRequestMethod("POST");
httpConn.setDoOutput(true);
httpConn.setDoInput(true);
OutputStream out = httpConn.getOutputStream();
out.write(b);
out.close();
//check response code...
int status = httpConn.getResponseCode();
String respMessage = httpConn.getResponseMessage();
System.out.println("RESPONSE CODE: " + status + " RESPONSE MESSAGE: " + respMessage);
//check response headers...
for (Map.Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) {
System.out.println(header.getKey() + "=" + header.getValue());
}
//check error stream - this helps alot when debugging...
InputStream errorStream = ((HttpURLConnection)connection).getErrorStream();
if (errorStream != null) {
System.out.println("Error Stream: " + convertStreamToString(errorStream));
}
//if there was an expected response, you need to parse it...
/* String responseString = "";
String outputString = "";
InputStreamReader isr = new InputStreamReader(httpConn.getInputStream());
BufferedReader in = new BufferedReader(isr);
while ((responseString = in.readLine()) != null) {
outputString = outputString + responseString;
}
isr.close();
System.out.println("OUT: " + outputString); */
}
static String convertStreamToString(InputStream is) {
Scanner s = new Scanner(is).useDelimiter("\\A");
return s.hasNext() ? s.next() : "";
}
private static String getWsdlUrl() {
String result = null;
try {
URLConnectionProxy wsConnection = (URLConnectionProxy)ADFContext.getCurrent().getConnectionsContext().lookup("SendMailProxyConnection");
result = wsConnection.getURL().toExternalForm();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
}
Happy coding.
8.15,
I can connect my microsoft web service and I can insert record with this service easily.
I get a confirmation code as a response for record insert. But I have a problem with encoding. The response message must like this 1Exa9GwOIO6pP35l4TJ1Bw== but instead of this I get a response like this 4�� u #
When I try this service on a browser I get the expected response as
in 1Exa9GwOIO6pP35l4TJ1Bw==
But when I try it on an android device with gsoap I get a response such as this one 4�� u #
How can I solve this encoding problem?
TheGameSoapProxy service;
_ns1__PlayerRegisterResponse* response = new _ns1__PlayerRegisterResponse();
std::string telNO =m_pEditTel->getText();
std::string telefonIME = "111";
std::string simCardID = "222";
std::string Username = m_pEditName->getText();
std::string takim = Takim.c_str();
_ns1__PlayerRegister* ps = new _ns1__PlayerRegister();
ps->telefonNumarasi = &telNO;
ps->telefonIME = &telefonIME;
ps->simCardID = &simCardID;
ps->Username = &Username;
ps->takim = &takim;
if (service.PlayerRegister(ps, response) == SOAP_OK)
{
string *ptrSonuc = response->PlayerRegisterResult;
CCLog( (char*)ptrSonuc );
}
As per other question here on SO:
add the line below to your typemap.dat file:
xsd__string = | wchar_t* | wchar_t*
And then use wstrings instead of strings.
I've been trying to download some file through a web service and its perfectly downloaded, but now I'm trying to add a feature if the file wasn't downloaded completely, the app should download only the remaining byte array and append to the existing one, using
connection = (HttpConnection) cf.getConnection(_url).getConnection();
int alreadyDownloaded = 0;
if(connection.getResponseCode() == HttpConnection.HTTP_OK) {
inputStream = new DataInputStream(connection.openInputStream());
final int len = (int) connection.getLength();
if (len > 0) {
String filename = _url.substring(_url.lastIndexOf('/') + 1);
FileConnection outputFile = (FileConnection) Connector.open(path + filename, Connector.READ_WRITE, true);
if (!outputFile.exists()) {
outputFile.create();
} else {
alreadyDownloaded = (int) outputFile.fileSize();
connection.setRequestProperty("Range", "bytes=" + alreadyDownloaded + "-");
}
And at this line
connection.setRequestProperty("Range", "bytes=" + alreadyDownloaded + "-");
I get an exception that says
Stream not in setup state
How can I get rid of this error?
The problem is that you are calling this line
connection.setRequestProperty("Range", "bytes=" + alreadyDownloaded + "-");
after you have already opened the connection, and sent the request parameters. So, it's too late to now change the Range property.
From BlackBerry API docs:
After an output stream has been opened by the openOutputStream or
openDataOutputStream methods, attempts to change the request
parameters via setRequestMethod or the setRequestProperty are ignored.
Once the request parameters have been sent, these methods will throw
an IOException.
If you look further down in that document, they show an example, which explains a little more:
// Getting the response code will open the connection,
// send the request, and read the HTTP response headers.
// The headers are stored until requested.
rc = c.getResponseCode();
So, you just need to call setRequestProperty() before this line:
if(connection.getResponseCode() == HttpConnection.HTTP_OK) {
When loading the Facebook feeds from one page, if a picture exist in the feed, I want to display the large picture.
How can I get with the graph API ? The picture link in the feed is not the large one.
Thanks.
The Graph API photo object has a picture connection (similar to that the user object has):
“The album-sized view of the photo. […] Returns: HTTP 302 redirect to the URL of the picture.”
So requesting https://graph.facebook.com/{object-id-from-feed}/picture will redirect you to the album-sized version of the photo immediately. (Usefull not only for displaying it in a browser, but also if f.e. you want to download the image to your server, using cURL with follow_redirect option set.)
Edit:
Beginning with API v2.3, the /picture edge for feed posts is deprecated.
However, as a field the picture can still be requested – but it will be a small one.
But full_picture is available as well.
So /{object-id-from-feed}?fields=picture,full_picture can be used to request those, or they can be requested directly with the rest of feed data, like this /page-id/feed?fields=picture,full_picture,… (additional fields, such as message etc., must be specified the same way.)
What worked for me :
getting the picture link from the feed and replacing "_s.jpg" with "_n.jpg"
OK, I found a better way. When you retrieve a feed with the graph API, any feed item with a type of photo will have a field called object_id, which is not there for plain status type items. Query the Graph API with that ID, e.g. https://graph.facebook.com/1234567890. Note that the object ID isn't an underscore-separated value like the main ID of that feed item is.
The result of the object_id query will be a new JSON dictionary, where you will have a source attribute containing a URL for an image that has so far been big enough for my needs.
There is additionally an images array that contains more image URLs for different sizes of the image, but the sizes there don't seem to be predictable, and don't all actually correspond to the physical dimensions of the image behind that URL.
I still wish there was a way to do this with a single Graph API call, but it doesn't look like there is one.
For high res image links from:
Link posts
Video posts
Photo posts
I use the following:
Note: The reason I give the _s -> _o hack precedence over the object_id/picture approach is because the object_id approach was not returning results for all images.
var picture = result.picture;
if (picture) {
if (result.type === 'photo') {
if (picture.indexOf('_s') !== -1) {
console.log('CONVERTING');
picture = picture.replace(/_s/, '_o');
} else if (result.object_id) {
picture = 'https://graph.facebook.com/' + result.object_id + '/picture?width=9999&height=9999';
}
} else {
var qps = result.picture.split('&');
for (var i = 0; i < qps.length; i++) {
var qp = qps[i];
var matches = qp.match(/(url=|src=)/gi);
if (matches && matches.length > 0) picture = decodeURIComponent(qp.split(matches[0])[1]);
}
}
}
This is a new method to get a big image. it was born after the previews method doesn't works
/**
* return a big url of facebook
* works onky for type PHOTO
* #param picture
* #param is a post type link
* #return url of image
*/
#Transactional
public String getBigImageByFacebookPicture(String pictrue,Boolean link){
if(link && pictrue.contains("url=http")){
String url = pictrue.substring(pictrue.indexOf("url=") + 4);
try {
url = java.net.URLDecoder.decode(url, "UTF-8");
} catch (UnsupportedEncodingException e) {
StringBuffer sb = new StringBuffer("Big image for Facebook link not found: ");
sb.append(link);
loggerTakePost.error(sb.toString());
return null;
}
return url;
}else{
try {
Document doc = Jsoup.connect(pictrue).get();
return doc.select("#fbPhotoImage").get(0).attr("src");
} catch (Exception e) {
StringBuffer sb = new StringBuffer("Big image for Facebook link not found: ");
sb.append(link);
loggerTakePost.error(sb.toString());
return null;
}
}
}
Enjoy your large image :)
Actually, you need two different solutions to fully fix this.
1] https://graph.facebook.com/{object_id}/picture
This solution works fine for images and videos posted to Facebook, but sadly, it returns small images in case the original image file was not uploaded to Facebook directly. (When posting a link to another site on your page for example).
2] The Facebook Graph API provides a way to get the full images in the feed itself for those external links. If you add 'full_picture' to the fields like in this example below when calling the API, you will be provided a link to the higher resolution version.
https://graph.facebook.com/your_facebook_id/posts?fields=id,link,full_picture,description,name&access_token=123456
Combining these two solutions I ended up filtering the input in PHP as follows:
if ( isset( $post['object_id'] ) ){
$image_url = 'https://graph.facebook.com/'.$post['object_id'].'/picture';
}else if ( isset( $post['full_picture'] ) ) {
$image_url = $post['full_picture'];
}else{
$image_url = '';
}
See: http://api-portal.anypoint.mulesoft.com/facebook/api/facebook-graph-api/docs/reference/pictures
Just put "?type=large" after the URL to get the big picture.
Thanks to #mattdlockyer for the JS solution. Here is a similar thing in PHP:
$posts = $facebook->api('/[page]/posts/', 'get');
foreach($posts['data'] as $post)
{
if(stristr(#$post['picture'], '_s.'))
{
$post['picture'] = str_replace('_s.', '_n.', #$post['picture']);
}
if(stristr(#$post['picture'], 'url='))
{
parse_str($post['picture'], $picturearr);
if($picturearr['url'])
$post['picture'] = $picturearr['url'];
}
//do more stuff with $post and $post['picture'] ...
}
After positive comment from #Lachezar Todorov I decided to post my current approach (including paging and using Json.NET ;):
try
{
FacebookClient fbClient = new FacebookClient(HttpContext.Current.Session[SessionFacebookAccessToken].ToString());
JObject posts = JObject.Parse(fbClient.Get(String.Format("/{0}/posts?fields=message,picture,link,attachments", FacebookPageId)).ToString());
JArray newsItems = (JArray)posts["data"];
List<NewsItem> result = new List<NewsItem>();
while (newsItems.Count > 0)
{
result.AddRange(GetItemsFromJsonData(newsItems));
if (result.Count > MaxNewsItems)
{
result.RemoveRange(MaxNewsItems, result.Count - MaxNewsItems);
break;
}
JToken paging = posts["paging"];
if (paging != null)
{
if (paging["next"] != null)
{
posts = JObject.Parse(fbClient.Get(paging.Value<String>("next")).ToString());
newsItems = (JArray)posts["data"];
}
}
}
return result;
}
And the helper method to retieve individual items:
private static IEnumerable<NewsItem> GetItemsFromJsonData(IEnumerable<JToken> items)
{
List<NewsItem> newsItems = new List<NewsItem>();
foreach (JToken item in items.Where(item => item["message"] != null))
{
NewsItem ni = new NewsItem
{
Message = item.Value<String>("message"),
DateTimeCreation = item.Value<DateTime?>("created_time"),
Link = item.Value<String>("link"),
Thumbnail = item.Value<String>("picture"),
// http://stackoverflow.com/questions/28319242/simplify-looking-up-nested-json-values-with-json-net/28359155#28359155
Image = (String)item.SelectToken("attachments.data[0].media.image.src") ?? (String)item.SelectToken("attachments.data[0].subattachments.data[0].media.image.src")
};
newsItems.Add(ni);
}
return newsItems;
}
NewsItem class I use:
public class NewsItem
{
public String Message { get; set; }
public DateTime? DateTimeCreation { get; set; }
public String Link { get; set; }
public String Thumbnail { get; set; }
public String Image { get; set; }
}