Getting an remote servlet image (Please help, very urgent)
Hi,
I have a remote servlet called chartservlet whose url is
http://203.120.153.16/SDS/Chart?Pane1=50;(Study,CBI.N|TRDPRC_1,SMA,200,GREEN,OHLC)&ChartType=HISTORICAL&FillColor=PINK&GridColor=YELLOW&TextColor=YELLOW&DataRepresentation=Charts
this servlet creates an chart image dynamically and displays to the requester(client).
Now in a local servlet that is running in tomcat(locally in my system) i am trying to connect to the remote servlet through HTTP url connection to retrive the resulting image into an byte array. the code snippet is as below:
public byte[] getByteContents(URL url) throws Exception
{
int responseCode;
HttpURLConnection connection;
InputStream input;
BufferedReader dataInput;
connection = (HttpURLConnection)url.openConnection();
responseCode = connection.getResponseCode();
if (responseCode != HttpURLConnection.HTTP_OK) {
throw new Exception("HTTP response code: " +
String.valueOf(responseCode));
}
byte [] b=null;
try {
input = connection.getInputStream();
int avail=input.available();
b=new byte[avail];
input.read(b);
input.close();
} catch (Exception ex) {
ex.printStackTrace(System.err);
return null;
}
return b;
}
}
where the url passed to the getByteContents() method is the same as the above one i.e
http://203.120.153.16/SDS/Chart?Pane1=50;(Study,CBI.N|TRDPRC_1,SMA,200,GREEN,OHLC)&ChartType=HISTORICAL&FillColor=PINK&GridColor=YELLOW&TextColor=YELLOW&DataRepresentation=Charts
then i am writing the resulting byte array into the output stream
private static final String CONTENT_TYPE = "image/png";
ServletOutputStream out=response.getOutputStream();
byte[] imgBytes = getByteContents(url);
out.write(imgBytes);
But the image is not getting displayed, but when i used to run the same url through my browser the image gets displayed properly.
Can somebody please help me to resolve this problem. It is very urgent, if anybody give a small hint also it will be very greatfull for me.
Hoping to get good responses.
Thanks & Regards
-Sandeep
