CODEWITHSUNDEEP
javaurl
StijnOnline
StijnOnline

Reputation: 45

Reading directly from url - not working

In some code i use similar code to Oracle's tutorial: Reading directly from a URL. Oracle's code also here below:

import java.net.*;
import java.io.*;

public class URLReader {
    public static void main(String[] args) throws Exception {

        URL oracle = new URL("http://www.oracle.com/");
        BufferedReader in = new BufferedReader(
        new InputStreamReader(oracle.openStream()));

        String inputLine;
        while ((inputLine = in.readLine()) != null)
            System.out.println(inputLine);
        in.close();
    }
}

This code worked before but it doesnt anymore. Even if i try the exact same code, inputLine never has any value. I dont know if it has something to do with java versions or something elso but i would like to know why this happens, and what is a good alternative.

Upvotes: 1

Views: 164

Answers (3)

StijnOnline
StijnOnline

Reputation: 45

As loris securo commented i needed to use https instead of http. And that fixed my problems.

Upvotes: 0

Ortomala Lokni
Ortomala Lokni

Reputation: 62743

If you replace http://www.oracle.com/ by http://www.google.com/ it works.

It's because a GET http://www.oracle.com/ gives

HTTP/1.1 301 Moved Permanently

If you run

curl www.oracle.com

You obtain the same effect. You have to follow the redirect with

curl -L www.oracle.com

to obtain the html content. In Java, you also have to follow the redirect, such as in this article :

https://www.mkyong.com/java/java-httpurlconnection-follow-redirect-example/

Upvotes: 1

Ousmane D.
Ousmane D.

Reputation: 56489

Oracle -

When you run the program, you should see, scrolling by in your command window, the HTML commands and textual content from the HTML file located at http://www.oracle.com/. Alternatively, the program might hang or you might see an exception stack trace. If either of the latter two events occurs, you may have to set the proxy host so that the program can find the Oracle server.

  • You can set the proxy host through the command line. Depending on your network configuration, you might also need to set the proxy port. If necessary, ask your system administrator for the name of the proxy host on your network.

UNIX

java -Dhttp.proxyHost=proxyhost [-Dhttp.proxyPort=portNumber] URLReader

DOS shell (Windows 95/NT)

java -Dhttp.proxyHost=proxyhost [-Dhttp.proxyPort=portNumber] URLReader

Also, I have actually ran it on my IDE but it only works with HTTPS

Upvotes: 0

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