content: package com.example.app_login.dbconnection;
  
  
  
  import java.io.BufferedReader;
  import java.io.BufferedWriter;
  import java.io.InputStreamReader;
  import java.io.OutputStream;
  import java.io.OutputStreamWriter;
  import java.io.UnsupportedEncodingException;
  import java.net.HttpURLConnection;
  import java.net.URL;
  import java.net.URLEncoder;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.net.ssl.HttpsURLConnection;
  
  
  
  public class RequestHandler {
  
      //Method to send httpPostRequest
      //This method is taking two arguments
      //First argument is the URL of the script to which we will send the request
      //Other is an HashMap with name value pairs containing the data to be send with the request
      public String sendPostRequest(String requestURL,
                                    HashMap<String, String> postDataParams) {
          //Creating a URL
          URL url;
  
          //StringBuilder object to store the message retrieved from the server
          StringBuilder sb = new StringBuilder();
          try {
              //Initializing Url
              url = new URL(requestURL);
  
              //Creating an httmlurl connection
              HttpURLConnection conn = (HttpURLConnection) url.openConnection();
  
              //Configuring connection properties
              conn.setReadTimeout(15000);
              conn.setConnectTimeout(15000);
              conn.setRequestMethod("POST");
              conn.setDoInput(true);
              conn.setDoOutput(true);
  
              //Creating an output stream
              OutputStream os = conn.getOutputStream();
  
              //Writing parameters to the request
              //We are using a method getPostDataString which is defined below
              BufferedWriter writer = new BufferedWriter(
                      new OutputStreamWriter(os, "UTF-8"));
              writer.write(getPostDataString(postDataParams));
  
              writer.flush();
              writer.close();
              os.close();
              int responseCode = conn.getResponseCode();
              System.out.println("responseCode  :         "+responseCode);
  
              if (responseCode == HttpsURLConnection.HTTP_OK) {
  
                  BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                  sb = new StringBuilder();
                  String response;
                  //Reading server response
                  while ((response = br.readLine()) != null){
                      sb.append(response);
                  }
                  System.out.println("response     :   "+response);
              }
  
          } catch (Exception e) {
              e.printStackTrace();
              System.out.println("Exception    :    "+e);
          }
          return sb.toString();
      }
  
      public String sendGetRequest(String requestURL){
          StringBuilder sb =new StringBuilder();
          try {
              URL url = new URL(requestURL);
              HttpURLConnection con = (HttpURLConnection) url.openConnection();
              BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));
  
              String s;
              while((s=bufferedReader.readLine())!=null){
                  sb.append(s+"\n");
              }
          }catch(Exception e){
          }
          return sb.toString();
      }
  
      public String sendGetRequestParam(String requestURL, String id){
          System.out.println("sendGetRequestParamse --------> ");
          StringBuilder sb =new StringBuilder();
          try {
              URL url = new URL(requestURL+id);
              System.out.println("URL+ID --------> "+url);
              HttpURLConnection con = (HttpURLConnection) url.openConnection();
              System.out.println("connection --------> "+con.toString());
              BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));
              System.out.println("bufferedReader --------> "+bufferedReader.toString());
  
              String s;
              while((s=bufferedReader.readLine())!=null){
                  sb.append(s+"\n");
              }
  
          }catch(Exception e){
          }
          return sb.toString();
      }
  
      private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException {
          StringBuilder result = new StringBuilder();
          boolean first = true;
          for (Map.Entry<String, String> entry : params.entrySet()) {
              if (first)
                  first = false;
              else
                  result.append("&");
  
              result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
              result.append("=");
              result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
          }
  
          return result.toString();
      }
  
      public String sendGetRequestParam(String requestURL){
          System.out.println("sendGetRequestParamse --------> ");
          StringBuilder sb =new StringBuilder();
          try {
              URL url = new URL(requestURL);
              System.out.println("URL+ID --------> "+url);
              HttpURLConnection con = (HttpURLConnection) url.openConnection();
              System.out.println("connection --------> "+con.toString());
              BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));
              System.out.println("bufferedReader --------> "+bufferedReader.toString());
  
              String s;
              while((s=bufferedReader.readLine())!=null){
                  sb.append(s+"\n");
              }
  
          }catch(Exception e){
          }
          return sb.toString();
      }
  }
  