i have created one application which parsed the data and it will displyed in ListRow,for that i have created http connection as below.
enter code here
public void run() {
System.out.println("Run Method called");
HttpConnection Conn = null;
InputStream is = null;
try {
System.out.println("Before Connection");
Conn = (HttpConnection) Connector.open("MYURL;deviceside=true" );
System.out.println("HTTP connection called");
//conn = (StreamConnection) Connector.open("http://xyz.com/Verandah/RSS/RSSContent.aspx?CatId=4;deviceside=true");
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
documentBuilderFactory.setCoalescing(true);
DocumentBuilder docBuilder = documentBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse(is);
when i am running my application i am getting IllegalArgumentException.i have compiled my application and i found i am getting the above exception in this line Document doc = docBuilder.parse(is); am i doing wrong anything wrong while creating a connection? need your suggestion why i am getting exception at this line.
thanks.
You forgot to open inputstream over httpconnection before passing it to parse() method.
In your code is == null at this line.
Add this line
is = Conn.getInputStream();
before passing is to parse() method.
Related
In my application i have to integrate API. I am not getting code for how to check whether internet is available or not. How to send JSON Data to server. Please help me out. As in android we call API in AsyncTask class. In blackberry i did not found like this.
Suggest me some link or ideas so that i can integrate code. I am googling. But did not getting result .
What I have tried is here:
JSONObject postData = new JSONObject();
postData.put("userId", "24");
postData.put("messageTime","06:00:00");
postData.put("language", language[lang_Ocf.getSelectedIndex()]);
System.out.println("********json********"+postData);
ConnectionFactory conFactory = new ConnectionFactory();
ConnectionDescriptor conDesc = null;
try
{
conDesc = conFactory.getConnection(url+";deviceside=true");
}
catch(Exception e)
{
System.out.println(e.toString()+":"+e.getMessage());
}
String response = ""; // this variable used for the server response
// if we can get the connection descriptor from ConnectionFactory
if(null != conDesc)
{
try
{
HttpConnection connection = (HttpConnection)conDesc.getConnection();
//set the header property
connection.setRequestMethod(HttpConnection.POST);
connection.setRequestProperty("Content-Length", Integer.toString(postData.length()));
connection.setRequestProperty("Content-Type","application/json");
OutputStream out = connection.openOutputStream();
out.write(postData.get);
out.flush();
out.close();
int responseCode = connection.getResponseCode();
if(responseCode == HttpConnection.HTTP_OK){
InputStream in = connection.openInputStream();
StringBuffer buf = new StringBuffer();
int read = -1;
while((read = in.read())!= -1)
buf.append((char)read);
response = buf.toString();
}
Dialog.inform(response);
connection.close();
} catch(Exception e) {
}
}
return response;
Thanks
I solved this problem
Error:
Error: Cannot run program "jar": CreateProcess error=2, The system cannot find the file specified Packaging project HelaBibleWhereUR failed (took 10.715 seconds)
I simply put jar.exe that is under java bin folder in the jre bin folder.
I am developing an application in BlackBerry 5.0 and want to display an image from a url. While reading the image from the url using the httpconnection I get the exception "local connection timed out after 120000 "
The exception occurs on the line "httpConnection.getResponseCode()".
My code is as follows :
private byte[] getimagefromurl(String PhotoUrl)
{
String url = "http://www.mywebsite.com/images/Folder/xyz.jpg";
try
{
httpConnection = (HttpConnection) Connector.open(url, Connector.READ_WRITE);
System.out.println("url>>>>>>>> "+url);
httpConnection.setRequestMethod(HttpConnection.GET);
System.out.println("Response>>>>>>>> "+String.valueOf(httpConnection.getResponseCode()));
if(httpConnection.getResponseCode() == HttpConnection.HTTP_OK)
{
InputStream input = httpConnection.openInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int j = 0;
while((j=input.read()) != -1)
{
baos.write(j);
}
byteArray = baos.toByteArray();
baos.close();
}
}
catch(Exception e)
{
System.out.println("in catch>>>>"+e.toString());
}
return byteArray;
}
append url extension like following example is work when you r working with WIFI
httpConnection = (HttpConnection) Connector.open(url+";interface=wifi", Connector.READ_WRITE);
extensions just check this url
connection extensions
Yes the answer is exactly that. The connection timed out. check that your webservice works. if you are testing from device or emulator ,make sure you can hit the URL from the default blackberry browser.
If you are testing in the emulator, make sure you have MDS-CS simulator started.
have a look at this bit of code which works
import java.io.InputStream;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
public class HTTPClient {
public static String getPage(String url) {
String response = "";
try {
StreamConnection s = (StreamConnection)Connector.open(url);
InputStream input = s.openInputStream();
byte[] data = new byte[256];
int len = 0;
StringBuffer raw = new StringBuffer();
while( -1 != (len = input.read(data))) {
raw.append(new String(data, 0, len));
}
response = raw.toString();
input.close();
s.close();
} catch(Exception e) { }
return response;
}
}
This is my code where the connection problem occuring.
HttpConnection is not getting a response from an connection obj in a input stream. The occuring error is:
Datagram(ConnectionBase).receive (Datagram) line 538
HttpConnection httpCon = null;
InputStream iStream = null;
String url = null;
String result = "";
public GetXmlHttp(String str)
{
url=str;
}
public String RESULT()
{
try
{
httpCon = (HttpConnection)Connector.open(url);
httpCon.setRequestMethod(HttpConnection.GET);
iStream = httpCon.openInputStream();//error is here
int httpResponse = httpCon.getResponseCode();
System.out.println("httpResponse code"+httpResponse);
System.out.println(httpResponse);
if(httpResponse != 200)
return null;
InputStreamReader in = new InputStreamReader(iStream);
StringBuffer sb=new StringBuffer();
char[] ch=new char[1020];
while(in.read(ch)!=-1)
{
sb.append(ch);
}
}
}
Posting the exception would help, but allso have a look at the API documentation for HttpConnection. There is sample code posted there for getting via an HttpConnection which has at least one significant difference from yours. getResponseCode is called before openInputStream:
void getViaHttpConnection(String url) throws IOException {
HttpConnection c = null;
InputStream is = null;
int rc;
try {
c = (HttpConnection)Connector.open(url);
// 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();
if (rc != HttpConnection.HTTP_OK) {
throw new IOException("HTTP response code: " + rc);
}
is = c.openInputStream();
I have link of XML file, how I want to download it in my local directory as application starts,,,,
I am working on blackberry application
How can I do it ?
Try this:
HttpConnection httpConnector = (HttpConnection) Connector.open(urlStr + ";interface=wifi");
httpConnector.setRequestMethod(HttpConnection.GET);
InputStream in = httpConnector.openInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));
StringBuffer content = new StringBuffer();
String line;
while ((line = bufferedReader.readLine()) != null) {
content.append(line + "\n");
}
This code will work if device has wifi connection. Of course, you should use try-catch block and you can use String instead of StringBuffer, it is up to you.
i am developing and app for blackberry and i need to send a Http Post Request to my server. I'm using the simulator in order to test my app and i found this code in order to send request:
http://vasudevkamath.techfiz.com/general/posting-data-via-http-from-blackberry/
But i can't get it work, because it fails in this line:
int rc = _httpConnection.getResponseCode();
Any idea?
thanks
Here is a sample code on how to send a POST request:
HttpConnection c = (HttpConnection) Connector.open(url, Connector.READ_WRITE);
c.setRequestMethod(HttpConnection.POST);
OutputStream os = c.openOutputStream();
os.write(request.getBytes("UTF-8"));
os.flush();
os.close();
InputStream is = c.openInputStream();
Just make sure you use this code in a separate thread.
public static ResponseBean sendRequestAndReceiveResponse(String method, String absoluteURL, String bodyData, boolean readResponseBody)
throws IOException
{
ResponseBean responseBean = new ResponseBean();
HttpConnection httpConnection = null;
try
{
String formattedURL = absoluteURL + "deviceside=true;interface=wifi"; // If you are using WiFi
//String formattedURL = absoluteURL + "deviceside=false"; // If you are using BES
//String formattedURL = absoluteURL + "deviceside=true"; // If you are using TCP
if(DeviceInfo.isSimulator()) // if you are using simulator
formattedURL = absoluteURL;
httpConnection = (HttpConnection) Connector.open(formattedURL);
httpConnection.setRequestMethod(method);
if (bodyData != null && bodyData.length() > 0)
{
OutputStream os = httpConnection.openOutputStream();
os.write(bodyData.getBytes("UTF-8"));
}
int responseCode = httpConnection.getResponseCode();
responseBean.setResponseCode(responseCode);
if (readResponseBody)
{
responseBean.setBodyData(readBodyData(httpConnection));
}
}
catch (IOException ex)
{
System.out.println("!!!!!!!!!!!!!!! IOException in NetworkUtil::sendRequestAndReceiveResponse(): " + ex);
throw ex;
}
catch(Exception ex)
{
System.out.println("!!!!!!!!!!!!!!! Exception in NetworkUtil::sendRequestAndReceiveResponse(): " + ex);
throw new IOException(ex.toString());
}
finally
{
if (httpConnection != null)
httpConnection.close();
}
return responseBean;
}
public static StringBuffer readBodyData(HttpConnection httpConnection) throws UnsupportedEncodingException, IOException
{
if(httpConnection == null)
return null;
StringBuffer bodyData = new StringBuffer(256);
InputStream inputStream = httpConnection.openDataInputStream();
byte[] data = new byte[256];
int len = 0;
int size = 0;
while ( -1 != (len = inputStream.read(data)) )
{
bodyData.append(new String(data, 0, len,"UTF-8"));
size += len;
}
if (inputStream != null)
{
inputStream.close();
}
return bodyData;
}
I know this question is pretty old and OP probably solved it by now, but I've just run into the same problem and managed to fix it!
You need to append ;deviceside=true to your URL.
So for example, your URL will change from "http://example.com/directory/submitpost.php" to "http://example.com/directory/submitpost.php;deviceside=true".
I found this here: http://supportforums.blackberry.com/t5/Java-Development/Different-ways-to-make-an-HTTP-or-socket-connection/ta-p/445879
My POST request was timing out after 3 minutes when I did not have this (See My Comment), but it works fine with this appended to the url.
I would also recommend using ConnectionFactory. Here's some of my code:
Network.httpPost("http://example.com/directory/submitpost.php;deviceside=true", paramNamesArray, paramValsArray)
public static void httpPost(String urlStr, String[] paramName, String[] paramVal) throws Exception {
ConnectionFactory conFactory = new ConnectionFactory();
conFactory.setTimeLimit(1000);
HttpConnection conn = (HttpConnection) conFactory.getConnection(urlStr).getConnection();
conn.setRequestMethod(HttpConnection.POST);
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
StringBuffer sb = new StringBuffer();
for (int i = 0; i < paramName.length; i++) {
sb.append(paramName[i]);
sb.append("=");
sb.append(paramVal[i]);
sb.append("&");
}
byte[] postData = sb.toString().getBytes("UTF-8");
conn.setRequestProperty("Content-Length",new Integer(postData.length).toString());
OutputStream out = conn.openOutputStream();
out.write(postData);
//out.flush(); //Throws an Exception for some reason/Doesn't do anything anyways
out.close();
//This writes to our connection and waits for a response
if (conn.getResponseCode() != 200) {
throw new Exception(conn.getResponseMessage());
}
}
Not sure about the site you posted, but I've successfully used the sample ConnectionFactory code provided on the blackberry site.
http://supportforums.blackberry.com/t5/Java-Development/Sample-Code-Using-the-ConnectionFactory-class-in-a-BrowserField/ta-p/532860
Just make sure not to invoke the connection on the EventThread.
That's how you add parameters, Full answer is here:
StringBuffer postData = new StringBuffer();
httpConn = (HttpConnection) Connector.open("https://surveys2.kenexa.com/feedbacksurveyapi/login?");
httpConn.setRequestMethod(HttpConnection.POST);
postData.append("username="+username);
postData.append("&password="+pass);
postData.append("&projectcode="+projectid);
String encodedData = postData.toString();
httpConn.setRequestProperty("Content-Language", "en-US");
httpConn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
httpConn.setRequestProperty("Content-Length",(new Integer(encodedData.length())).toString());
byte[] postDataByte = postData.toString().getBytes("UTF-8");
OutputStream out = httpConn.openOutputStream();
out.write(postDataByte);
out.close();
httpConn.getResponseCode();