Java下载文本文件将生成html代码而不是文本。

Question

当我使用apache下载这个文本文件asdf.txt时：

URL fileURL = new URL(urlMatcher.group(1)); FileUtils.copyURLToFile(fileURL, new File(fileName));

它将生成网页的html代码，而不是

我就是那个文本文件！

它应该会回来。

将url打印为字符串的结果如下：

https://alm.automic.com/jama/attachment/542/asdf.txt

请帮我找出登录所需的POST请求的Java代码

Host=alm.automic.com 用户代理=Mozilla/5.0(WindowsNT6.1；WOW64；rv:39.0) 接受=text/html，application/xhtml+xml，application/xml;q=0.9，/;q=0.8 接受-语言=en-US，en;q=0.5 接受-编码=gzip，放气 Referer=https://alm.automic.com/jama/login.req Cookie=JSESSIONID=CA14239217D0E54E913D17083F71724F；DWRSESSIONID=8nCO$BHWFA2282XF4fVYnmwl7Wk；jamaContourServerTime=1436778397165；jamaContourSessionExpiry=1436778397165 连接=保持活力 Content-Type=application/x-www-form-urlencoded 内容长度=53 POSTDATA=j_username=user&j_password=pass&submit=Login

请帮忙，谢谢提前！

Answer 1

了解如何进行http连接，如果有人需要的话:使用下面的类和类似脾气数据(Firefox addon)之类的东西来查找GET/POST请求头/数据，并以如下方式将其添加到下面的类中。

ArrayList<String> cookies = new ArrayList<String>(1);
        HttpClient httpclient = HttpClients.createDefault();
        HttpGet httpGet = new HttpGet(link);

        // Request parameters and other properties.
        List<NameValuePair> params = new ArrayList<NameValuePair>(2);
        httpGet.addHeader("Host", "alm.automic.com");
        httpGet.addHeader("User-Agent",
                "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:39.0) Gecko/20100101 Firefox/39.0");
        httpGet.addHeader("Accept",
                "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
        httpGet.addHeader("Accept-Language", "en-US,en;q=0.5");
        httpGet.addHeader("Accept-Encoding", "gzip, deflate");
        if (cookies.size() > 1)
            httpGet.addHeader("Cookie",
                    cookies.get(cookies.size() - 1).split(";")[0]);
        httpGet.addHeader("Connection", "keep-alive");

        // Execute and get the response.
        HttpResponse response = httpclient.execute(httpGet);
        Header[] responseHeaders = response.getAllHeaders();
        String location = "https://alm.automic.com/jama/login.req;";

        for (int i = 0; i < responseHeaders.length; i++)
        {
            if (responseHeaders[i].getName().equals("Set-Cookie"))
            {
                if (responseHeaders[i].getValue().split(";")[0].split("=")[0]
                        .equals("JSESSIONID"))
                    cookies.add(responseHeaders[i].getValue());
            }
            if (responseHeaders[i].getName().equals("Location"))
            {
                location = responseHeaders[i].getValue();
            }
        }