Java http connection

Question

I want setup a http connection to send request and get the response in an stand alone java application, can any one help me how can i proceed with this????

By the way, feel free to "accept" an answer if it has been most helpful to you. (though you might be an unregistered user, and I'm not sure if that's possible?) — Mike G, Sep 03 '10 at 13:20

Mike G · Accepted Answer · 2010-09-01T15:11:10.520

16

HttpURLConnection connection = null;
    try {
        URL url = new URL("www.google.com");
        connection = (HttpURLConnection) url.openConnection();
        connection.connect();
        connection.getInputStream();
                    // do something with the input stream here

    } catch (MalformedURLException e1) {
        e1.printStackTrace();
    } catch (IOException e1) {
        e1.printStackTrace();
    } finally {
        if(null != connection) { connection.disconnect(); }
    }

edited Sep 01 '10 at 15:11

answered Sep 01 '10 at 14:33

Mike G

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For safety, you should check for null on your connection reference in the finally block – Jeroen Rosenberg Sep 01 '10 at 15:04
@jeroen / mike if the response is html how can i get it?? – user323101 Sep 02 '10 at 08:23
@user323101 - you can wrap the InputStream returned from the connection in a BufferedReader, and use a StringBuilder to append each line returned from bufferedReader.readLine(). – Mike G Sep 02 '10 at 15:18

score 2 · Answer 2 · answered Sep 01 '10 at 14:28

2

You can use URLConnection class bundled with standard Java (since JDK 1.0!), or a higher level HTTP client such as Apache's HTTPCLIENT which will provide, in addition to plain HTTP, higher level components like cookies, standard headers and more.

answered Sep 01 '10 at 14:28

Pablo Santa Cruz

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score 0 · Answer 3 · answered Sep 01 '10 at 14:41

A couple of answers have already pointed out Apache HTTP Client, but they link to version 3.x, which is no longer maintained. You should use version 4, which has a slightly different API, if you want to use this library: http://hc.apache.org/httpcomponents-client-4.0.1/index.html

Java http connection

3 Answers3