code: package utils;
  import java.io.BufferedReader;
  import java.io.DataOutputStream;
  import java.io.InputStreamReader;
  import java.net.HttpURLConnection;
  import java.net.URL;
  
  public class sendRequest {
  	
  	/*
  	 * This class sends post and get request to the desired url with url parameters 
  	 * and retruns the response in string format.
  	 * 
  	 * 
  	 * */
  	private final String USER_AGENT = "Mozilla/5.0";
  	
  	
  	public String sendPostRequest(String microservice_url,String microservice_url_Parameters) throws Exception{
  		String url = microservice_url;
  		URL obj = new URL(url);
  		HttpURLConnection con = (HttpURLConnection) obj.openConnection();
  		con.setConnectTimeout(5000);		//timeout in 5 seconds
  		con.setReadTimeout(5000); // Read timeout set to 5 seconds
  		//add request header
  		con.setRequestMethod("POST");
  		con.setRequestProperty("User-Agent", USER_AGENT);
  		con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
  		con.setRequestProperty("content-type","application/json");
  
  		//		String urlParameters = "sn=C02G8416DRJM&cn=&locale=&caller=&num=12345";//this is where data is passed. 	
  		String urlParameters = microservice_url_Parameters;
  		// Send post request
  		con.setDoOutput(true);
  		DataOutputStream wr = new DataOutputStream(con.getOutputStream());
  		wr.writeBytes(urlParameters);
  		wr.flush();
  		wr.close();
  
  //		int responseCode = con.getResponseCode();
  //		System.out.println("response code is " + responseCode);
  		BufferedReader in = new BufferedReader(
  				new InputStreamReader(con.getInputStream()));
  		String inputLine;
  		StringBuffer response = new StringBuffer();
  
  		while ((inputLine = in.readLine()) != null) {
  			response.append(inputLine);
  		}
  		in.close();
  		return response.toString();
  	}
  }
  