Java 响应编码HTTPconnection获取HTML文本

我试着阅读回复（不仅是这个回复，还有很多来自这个网站的回复），下面是我的函数代码：

    // HTTP POST request
    private void sendFirstPost() throws Exception {

        String url = "http://g1.botva.ru/login.php";
        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

        con.setInstanceFollowRedirects(false);

        //add reuqest header
        con.setRequestMethod("POST");
        con.setRequestProperty("Accept", "*/*");
        con.setRequestProperty("Accept-Encoding", "gzip, deflate");
        //con.setRequestProperty("Content-Length", "86");
        con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        con.setRequestProperty("User-Agent", "runscope/0.1");

        String urlParameters = "do_cmd=login&remember=1&password=avmalyutin1234&server=1&email=avmalyutin%40mail.ru";

        // Send post request
        con.setDoOutput(true);
        DataOutputStream wr = new DataOutputStream(con.getOutputStream());
        wr.writeBytes(urlParameters);
        wr.flush();
        wr.close();

        int responseCode = con.getResponseCode();
        System.out.println("\nSending 'POST' request to URL : " + url);
        System.out.println("Post parameters : " + urlParameters);
        System.out.println("Response Code : " + responseCode);
        System.out.println("Content Type : " + con.getContentType());

        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream(), "cp1251"));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        //print result
        System.out.println(response.toString());

        byte [] array = response.toString().getBytes("cp1251");

        String buffff = new String(array);
        System.out.println(buffff);
    }

---

作为一种内容类型，我得到text/html；charset=cp1251。我尝试使用编码cp1251，windows-1251——没有好的结果。有一次我设法得到一个HTML文本，但在那之后，future将在不更改任何源代码的情况下启动，输出的只是不可读的符号。那么，如何才能正确地从Response获取类似HTML的文本呢？

虽然标题说编码是

Cp1251

，但事实并非如此。服务器正在发送与

Cp1252

对应的字节

检查的一种方法是首先知道您将接收哪些字节：

String text = "Áîòâà Îíëàéí | Áèòâà çà ðåàëüíóþ êàïóñòó!";

for (byte n : text.getBytes("Cp1251")) {
    System.out.printf("%d ", n);
}
System.out.println();

for (byte n : text.getBytes("Cp1252")) {
    System.out.printf("%d ", n);
}
System.out.println();

然后在收到的字节中查找它们：

for(int n; (n = inputStream.read()) > 0; ) {
    System.out.printf("%d ", (byte) n);
}