Created
December 29, 2011 22:00
-
-
Save Dr-Emann/1536403 to your computer and use it in GitHub Desktop.
How can I download the contents of a URL using Java?
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| //------------------------------------------------------------// | |
| // JavaGetUrl.java: // | |
| //------------------------------------------------------------// | |
| // A Java program that demonstrates a procedure that can be // | |
| // used to download the contents of a specified URL. // | |
| //------------------------------------------------------------// | |
| // Code created by Developer's Daily // | |
| // http://www.DevDaily.com // | |
| //------------------------------------------------------------// | |
| import java.io.*; | |
| import java.net.*; | |
| public class JavaGetUrl { | |
| public static void main (String[] args) { | |
| //-----------------------------------------------------// | |
| // Step 1: Start creating a few objects we'll need. | |
| //-----------------------------------------------------// | |
| URL u; | |
| InputStream is = null; | |
| DataInputStream dis; | |
| String s; | |
| try { | |
| //------------------------------------------------------------// | |
| // Step 2: Create the URL. // | |
| //------------------------------------------------------------// | |
| // Note: Put your real URL here, or better yet, read it as a // | |
| // command-line arg, or read it from a file. // | |
| //------------------------------------------------------------// | |
| u = new URL("http://200.210.220.1:8080/index.shtml"); | |
| //----------------------------------------------// | |
| // Step 3: Open an input stream from the url. // | |
| //----------------------------------------------// | |
| is = u.openStream(); // throws an IOException | |
| //-------------------------------------------------------------// | |
| // Step 4: // | |
| //-------------------------------------------------------------// | |
| // Convert the InputStream to a buffered DataInputStream. // | |
| // Buffering the stream makes the reading faster; the // | |
| // readLine() method of the DataInputStream makes the reading // | |
| // easier. // | |
| //-------------------------------------------------------------// | |
| dis = new DataInputStream(new BufferedInputStream(is)); | |
| //------------------------------------------------------------// | |
| // Step 5: // | |
| //------------------------------------------------------------// | |
| // Now just read each record of the input stream, and print // | |
| // it out. Note that it's assumed that this problem is run // | |
| // from a command-line, not from an application or applet. // | |
| //------------------------------------------------------------// | |
| while ((s = dis.readLine()) != null) { | |
| System.out.println(s); | |
| } | |
| } catch (MalformedURLException mue) { | |
| System.out.println("Ouch - a MalformedURLException happened."); | |
| mue.printStackTrace(); | |
| System.exit(1); | |
| } catch (IOException ioe) { | |
| System.out.println("Oops- an IOException happened."); | |
| ioe.printStackTrace(); | |
| System.exit(1); | |
| } finally { | |
| //---------------------------------// | |
| // Step 6: Close the InputStream // | |
| //---------------------------------// | |
| try { | |
| is.close(); | |
| } catch (IOException ioe) { | |
| // just going to ignore this one | |
| } | |
| } // end of 'finally' clause | |
| } // end of main | |
| } // end of class definition |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment