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Download webpage in Java
We can download a web page using its URL in Java. Following are the steps needed.
Create URL object using url string.
Download webpage in Java
Create a BufferReader object using url.openStream() method.
BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
Create a BufferWriter object to write to a file.
BufferedWriter writer = new BufferedWriter(new FileWriter("page.html"));
Read each line using BufferReader and write using BufferWriter.
String line; while ((line = reader.readLine()) != null) { writer.write(line); }
Following is the complete program to download a given URL page at current location.
import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import java.net.URL; public class Tester { public static void main(String args[]) throws IOException { download("http://www.google.com"); } public static void download(String urlString) throws IOException { URL url = new URL(urlString); try( BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream())); BufferedWriter writer = new BufferedWriter(new FileWriter("page.html")); ) { String line; while ((line = reader.readLine()) != null) { writer.write(line); } System.out.println("Page downloaded."); } } }
Output
Page downloaded.
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