Read URL Contents using HttpURLConnection

Follow below steps to read the contents from an url.

Step 1: Create a connection to the url.

                 URL url = new URL(urlToConnect);

                 HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection();

                

Step 2: Create input stream from the url connection.

                 int responseCode = httpUrlConnection.getResponseCode();

                 InputStream inputStream = null;

                 if (responseCode >= 200 && responseCode < 400) {

                          inputStream = httpUrlConnection.getInputStream();

                 } else {

                          inputStream = httpUrlConnection.getErrorStream();

                 }

Step 3: Read the content from input stream and print them to console.

                 BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));

                 String line = null;

                 while ((line = br.readLine()) != null) {

                          System.out.println(line);

                 }

Find below working application.

Test.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class Test {

 private static HttpURLConnection getURLConnection(String urlToConnect) throws IOException {
  URL url = new URL(urlToConnect);
  HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection();
  return httpUrlConnection;
 }

 private static InputStream getContent(HttpURLConnection httpUrlConnection) throws IOException {
  int responseCode = httpUrlConnection.getResponseCode();
  InputStream inputStream = null;

  if (responseCode >= 200 && responseCode < 400) {
   inputStream = httpUrlConnection.getInputStream();
  } else {
   inputStream = httpUrlConnection.getErrorStream();
  }

  return inputStream;
 }

 private static void printInputStream(InputStream inputStream) throws IOException {
  BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));

  String line = null;

  while ((line = br.readLine()) != null) {
   System.out.println(line);
  }
 }

 public static void main(String[] args) throws IOException {
  String url = "https://self-learning-java-tutorial.blogspot.com/2016/05/java-home-page.html";
  HttpURLConnection httpUrlConnection = getURLConnection(url);
  InputStream inputStream = getContent(httpUrlConnection);
  printInputStream(inputStream);

 }

}

Previous                                                 Next                                                 Home