Re: : how to supply login/password to a web site

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <>
Fri, 17 Feb 2012 16:58:19 -0500
On 2/17/2012 7:35 AM, zigzagdna wrote:

On Feb 16, 9:47 pm, zigzagdna<> wrote:

On Feb 16, 9:16 pm, Arne Vajh?j<> wrote:

On 2/16/2012 8:53 PM, zigzagdna wrote:

I have a web site which I want to access from a java program.
Problem is web site requires a login and password. However web site
Does not provide in URL a way to specify login and password.
Is there any way in my java progam I can supply various key strokes
which I will
Type when I logon manually.

Typical the web site will use form based login.

In which case you will need to first send a POST to the
action URL of the login page and then request the stuff you
need using the session cookie you got back from the login.

I will strongly recommend Apache HttpClient over raw

I do have some examples on the shelf if you are interested.

  Can you post your examples in this thread, else please send them to
me at

import java.util.ArrayList;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

public class Login {
     private HttpClient client;
     public Login() {
         client = new DefaultHttpClient();
     public void login(String url, String userField, String userValue,
String passField, String passValue) throws Exception {
         List<NameValuePair> nvp = new ArrayList<NameValuePair>();
         nvp.add(new BasicNameValuePair(userField, userValue));
         nvp.add(new BasicNameValuePair(passField, passValue));
         post(url, nvp);
     public String get(String url) throws Exception {
         HttpGet met = new HttpGet(url);
         return EntityUtils.toString(client.execute(met).getEntity());
     public String post(String url, List<NameValuePair> nvp) throws
Exception {
         HttpPost met = new HttpPost(url);
         if (nvp != null) {
             met.setEntity(new UrlEncodedFormEntity(nvp, HTTP.UTF_8));
         return EntityUtils.toString(client.execute(met).getEntity());
     public static void main(String[] args) throws Exception {
         Login lgi = new Login();
"j_username", "userarne", "j_password", "xxxxxx");


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