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String params="uid="+user+"&pwd="+pass+"&path="+path;

URL evsURL = new URL("https://<server address>/evs/getFolderDetails");

HttpURLConnection con = (HttpURLConnection)evsURL.openConnection();

con.setRequestMethod("POST");

con.setRequestProperty("Content-Type","application/x-www-form-urlencoded;  charset=UTF-8");

con.setDoOutput(true);

con.setDoInput(true);

con.setUseCaches(false);

DataOutputStream dout =  new DataOutputStream (con.getOutputStream ());

dout.writeBytes(params);

dout.flush();

dout.close();

BufferedReader in  = new BufferedReader(new InputStreamReader(con.getInputStream()));

while((str = in.readLine()) != null){

result += str; 

}