从Java发送OWA登录表单 [英] Sending an OWA logon form from Java

问题描述

我有兴趣以编程方式从Java代码登录到OWA（Microsoft Outlook Web Access - 基于Web的电子邮件客户端），并且只检索收件箱未读数 - 我可以从收件箱网页中读取此号码页面的HTML源代码，但问题是到达那里 - 登录。

本质上，从查看OWA登录页面的HTML源代码可以看出， HTML表单元素：

 < form action =owaauth.dllmethod =POSTname =logonFormautocomplete = 关 > 
  

由该按钮元素提交：

 < input type =submitclass =btnvalue =Log Ononclick =clkLgn（）> 
  

从调查clkLgn（）脚本，我发现它向文档发送一个cookie，以便它可以不是至关重要的：

  function clkLgn（）
 {
 if（gbid（rdoPrvt）。检查）
 {
 var oD = new Date（）; 
 oD.setTime（oD.getTime（）+ 2 * 7 * 24 * 60 * 60 * 1000）; 
 var sA =acc =+（gbid（chkBsc）。checked？1：0）; 
 var sL =lgn =+ gbid（username）。 
 document.cookie =logondata =+ sA +&+ sL +; expires =+ oD.toUTCString（）; 
} 
} 
  

基本上如何发送此表单？
以下代码是我尝试的问题，我可以使HTTP连接 - 但我似乎无法POST正确的HTTP请求。

  URL urlObject = new URL（url）; 
 
 HttpURLConnection hConnection =（HttpURLConnection）urlObject.openConnection（）; 
 HttpURLConnection.setFollowRedirects（true）; 
 hConnection.setDoOutput（true）; 
 hConnection.setRequestMethod（POST）; 
 
 PrintStream ps = new PrintStream（hConnection.getOutputStream（））; 
 
 ps.print（username =+ username +& amp; amp; password =+ password）; 
 ps.close（）; 
 
 
 hConnection.connect（）; 
 
 if（HttpURLConnection.HTTP_OK == hConnection.getResponseCode（））
 {
 InputStream is = hConnection.getInputStream（）; 
 OutputStream os = new FileOutputStream（output.html）; 
 int数据; 
 while（（data = is.read（））！= -1）
 {
 os.write（data）; 
} 
 is.close（）; 
 os.close（）; 
 hConnection.disconnect（）; 
} 
  

它只是继续返回相同的登录HTML页面。

解决方案

JavaScript确实是一件重要的事情：它向文档添加了一个cookie。需要一个合适的HTTP客户端，以在每个HTTP请求上的标头上发送所有有效的cookie。你应该以编程方式做同样的事情。您可以使用 URLConnection＃setRequestProperty（） 。

此外，在编程方式提交表单时，还需要考虑几件事情：您不应该跳过任何隐藏的输入字段（ input type =hidden），那些可能是相关的。您还应该发送要按程序方式按提交按钮的提交按钮的 name = value 对。最后，您不应该使用& amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp;请注意，我不保证最终可以工作，OWA的事情可能还有一些其他的预防机器人，但是它应该能够解决这个问题。

另请参见：

• 如何使用URLConnection？

---

顺便说一句，你是否考虑过使用SMTP / IMAP API连接它，如 JavaMail ？

I am interested in a way to programmatically log into OWA (Microsoft Outlook Web Access - a web-based email client) from Java code and retrieve nothing more than the inbox unread count -- I can read this number from the inbox web page's HTML source - but the problem is getting there - logging in.

Essentially, from looking at the HTML source of the OWA logon page, I can see that there is an HTML form element:

<form action="owaauth.dll" method="POST" name="logonForm" autocomplete="off"> 

that gets submitted by a button element within it:

<input type="submit" class="btn" value="Log On" onclick="clkLgn()"> 

From investigating the clkLgn() script, I find that it sends a cookie to the document so it may not be crucial:

function clkLgn()
{
    if(gbid("rdoPrvt").checked)
    {
        var oD=new Date();
        oD.setTime(oD.getTime()+2*7*24*60*60*1000);
        var sA="acc="+(gbid("chkBsc").checked?1:0);
        var sL="lgn="+gbid("username").value;
        document.cookie="logondata="+sA+"&"+sL+";expires="+oD.toUTCString();
    }
}

Basically, how can I send this form? The following code is my attempt at the problem, I can make the HTTP connection - but I can't seem to be able to POST the correct HTTP request.

                URL urlObject = new URL(url);

                HttpURLConnection hConnection = (HttpURLConnection)urlObject.openConnection();
                HttpURLConnection.setFollowRedirects(true);
                hConnection.setDoOutput(true);
                hConnection.setRequestMethod("POST");

                PrintStream ps = new PrintStream(hConnection.getOutputStream());

                ps.print("username="+username+"&password="+password);
                ps.close();


                hConnection.connect();

                if( HttpURLConnection.HTTP_OK == hConnection.getResponseCode() )
                {
                    InputStream is = hConnection.getInputStream();
                    OutputStream os = new FileOutputStream("output.html");
                    int data;
                    while((data=is.read()) != -1)
                    {
                      os.write(data);
                    }
                    is.close();
                    os.close();
                    hConnection.disconnect();
                }

It just keeps returning the same logon HTML page.

解决方案

That JavaScript does certainly an important thing: it adds a cookie to the document. A decent HTTP client is required to send all valid cookies along the headers on every HTTP request. You should do the same programmatically. You can add headers using URLConnection#setRequestProperty().

Further, there are several things to take into account as well when submitting forms programmatically: you should not skip any hidden input fields (input type="hidden"), those might be of relevance. You should also send the name=value pair of the submit button you'd like to press programmatically along as request parameter. Finally, you should not be using & to concatenate parameter pairs, but &.

Note that I don't guarantee that it will finally work, that OWA thing might have some other prevention against bots, but it should solve the as far spotted problems.

See also:

• How to use URLConnection?

---

By the way, have you considered just connecting it using a SMTP/IMAP API like JavaMail?

这篇关于从Java发送OWA登录表单的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！