使用JAVA APACHE HTTPClient下载HTTP帖子生成的文件

Question

I have a need to log into a webpage, download a file (that appears after a post) and then log out again. 我需要登录到网页，下载文件（帖子后显示），然后再次注销。

Logging in and out is fine, but I am having some troubles when I try to get to the file. 登录和注销都可以，但是在尝试访问文件时遇到了一些麻烦。

In a web browser I fill in the form once I press OK it does to a webpage saying 'Successful' and a file download box appears. 在Web浏览器中，我按OK后填写表格，它对显示“成功”的网页进行显示，并出现文件下载框。

When I do the same thing via HTTP client (copying the parameters used in FF by firebug) all I get the the response.entity is the webpage, but I cannot see the file anywhere. 当我通过HTTP客户端（通过firebug复制FF中在FF中使用的参数）执行相同的操作时，都得到了response.entity是网页，但是我在任何地方都看不到该文件。 Can someone please shed some light on my problem? 有人可以说明我的问题吗？

Here is my code (I realize it will not at the moment save the response, but if it was working, I would expect some long binary response) 这是我的代码（我意识到它暂时不会保存响应，但是如果它能正常工作，我会期望一些长时间的二进制响应）

// get data
httpost = new HttpPost("https://webpage.com.au/folder/getfile.asp?param=2");
List <NameValuePair> nvps = new ArrayList <NameValuePair>();
nvps.add(new BasicNameValuePair("p1", "0"));
nvps.add(new BasicNameValuePair("p2", "03"));
nvps.add(new BasicNameValuePair("p3", "1"));
nvps.add(new BasicNameValuePair("p4", "6"));
nvps.add(new BasicNameValuePair("p5", "1"));
nvps.add(new BasicNameValuePair("p6", "2"));
nvps.add(new BasicNameValuePair("p7", "1"));
nvps.add(new BasicNameValuePair("p8", "0"));
nvps.add(new BasicNameValuePair("p9", "G"));

httpost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8));   
response = httpclient.execute(httpost);
entity = response.getEntity();
printResponse(entity);

System.out.println("Get file post: " + response.getStatusLine());
EntityUtils.consume(entity);

System.out.println("Post file get cookies:");
printCookies(httpclient);

and the response: 和响应：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta name="language" content="en-us"/>
<meta name="robots" content="noindex, nofollow"/>
<meta http-equiv="Pragma" content="no-cache"/>
<meta http-equiv="Expires" content="-1"/>
<link rel="stylesheet" href="/css/style.css" type="text/css"/>
<script language="javascript">
    var wasSubmitted = false;

    function SingleSubmit () 
    { 
        var OK = !wasSubmitted; 
        wasSubmitted = true; 
        return OK;
    }
</script>
</head>
<body bgcolor="#FFFFFF" text="black" topmargin="0" leftmargin="0" marginwidth="0" marginheight="0">
<br>
<center><br><p class="center"></p><p class="center"></p><p class="center">getting file<br>
  <script language=Javascript>
      document.location = "TransSumExcel.asp";
  </script>
</center>
</body>
</html>

Answer 1

From the response text it appears that the browser is directed to load 'TransSumExcel.asp' by the javascript call 从响应文本来看，似乎通过javascript调用将浏览器定向为加载“ TransSumExcel.asp”

 document.location = "TransSumExcel.asp";

So right after the POST request you need to make a GET request for https://webpage.com.au/folder/TransSumExcel.asp 因此，在POST请求之后，您需要对https://webpage.com.au/folder/TransSumExcel.asp进行GET请求

使用JAVA APACHE HTTPClient下载HTTP帖子生成的文件

问题描述

1 个解决方案

解决方案1
0 已采纳 2013-05-16 14:29:38

使用JAVA APACHE HTTPClient下载HTTP帖子生成的文件

问题描述

1 个解决方案

解决方案1 0 已采纳 2013-05-16 14:29:38

解决方案1
0 已采纳 2013-05-16 14:29:38