How to login a page with httpclient API?

Mon, 26 May 2008 09:21:14 -0700 (PDT)
Hi Experts,

I am new the httpclient API. I am trying to access a webmail and grap
the email from the webmail. I found out that httpclient API can do
that, the web page login page is as follows:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">


<meta name="robots" content="noindex,nofollow">
<!-- =EF=BF=BD -->
<meta http-equiv="Content-type" content="text/html; charset=euc-jp" />=

<title>SquirrelMail - =E3=83=AD=E3=82=B0=E3=82=A4=E3=83=B3</title><script la=
  function squirrelmail_loginpage_onload() {
    document.forms[0].js_autodetect_results.value = '1';
    var textElements = 0;
    for (i = 0; i < document.forms[0].elements.length; i++) {
      if (document.forms[0].elements[i].type == "text" ||
document.forms[0].elements[i].type == "password") {
        if (textElements == 1) {
// -->

<!--[if IE 6]>
<style type="text/css">
/* avoid stupid IE6 bug with frames and scrollbars */
body {
    width: expression(document.documentElement.clientWidth - 30);


<body text="#000000" bgcolor="#ffffff" link="#0000cc" vlink="#0000cc=
alink="#0000cc" onLoad="squirrelmail_loginpage_onload();">
<form action="redirect.php" method="post">
<table bgcolor="#ffffff" border="0" cellspacing="0" cellpadding="0"
width="100%"><tr><td align="center"><center><img src="../images/
sm_logo.png" alt="SquirrelMail =E3=83=AD=E3=82=B4" width="308" height==
"111" /><br />
<small>SquirrelMail =E3=83=90=E3=83=BC=E3=82=B8=E3=83=A7=E3=83=B3 1.4.8<br /=

  SquirrelMail =E3=83=97=E3=83=AD=E3=82=B8=E3=82=A7=E3=82=AF=E3=83=88=E3=81=
=AE=E3=83=81=E3=83=BC=E3=83 =E3=81=AB=E3=82=88=E3=81=A3=E3=81=A6<br /></sm=
<table bgcolor="#ffffff" border="0" width="350"><tr><td
bgcolor="#dcdcdc" align="center"><b>SquirrelMail =E3=83=AD=E3=82=B0=E3=
<tr><td bgcolor="#ffffff" align="left">
<table bgcolor="#ffffff" align="center" border="0"
width="100%"><tr><td align="right" width="30%">=E3=83=AD=E3=82=B0=E3=
<td align="left" width="*"><input type="text" name="login_username"
value="" />


<tr><td align="right" width="30%">=E3=83=91=E3=82=B9=E3=83=AF=E3=83=BC=
<td align="left" width="*"><input type="password" name="secretkey" /=

<input type="hidden" name="js_autodetect_results" value="0" />
<input type="hidden" name="just_logged_in" value="1" />
<tr><td align="left"><center><input type="submit" value="=E3=83=AD=E3=
=82=B0=E3=82=A4=E3=83=B3" />


What I want to do is to put the username and password in the webpage
and click submit

My code is as follows:

public static void main(String[] args) throws Exception
        HttpClient client = new HttpClient();

        PostMethod authpost = new PostMethod(FRONT_PAGE);
        NameValuePair usr = new NameValuePair("login_username",
        NameValuePair psw = new NameValuePair("secretkey", password);

        authpost.setRequestBody(new NameValuePair[] {usr, psw,

        System.out.println("Login form post: " +




I know that this doesn't work because of the following question?
1) How to click the button with httpclient API?
2) I feel that the javascript will affect my login?

Can you please help me, I try to find in google for 2 days and try
many example and it doesn't work.

Thank you for reading this post.

best Regards
Ferdinand Ng

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