Question

我有一个java代码，在我需要注册的网站上提交多部分表单。我已经在各种脚本上测试了我的脚本，当网站上的cookie看起来像user = username或uid = username等等时，它可以工作，但是当我有像PHPSESSID = xxxxxxxxxxxxxxxxxxxxxxx这样的东西时，id不起作用，我连改变它的价值。请帮帮我！

connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);
if(is_cookie){
connection.setRequestProperty("Cookie", cookie);
            }
            connection.setRequestProperty("USER-AGENT", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2");
            connection.setRequestProperty("Connection", "Keep-Alive");
            connection.setRequestProperty("Accept-Charset","iso-8859-1,*,utf-8");
            DataOutputStream httpStreamWriter = new DataOutputStream(connection.getOutputStream ());

Answer 1

PHPSESSIONID是PHP在服务器端生成的ID。如果您没有该ID，则可能无法向该PHP脚本发送任何数据，因为服务器会通过该ID“识别”该用户。

要回答您的问题：您无法更改该ID。

Answer 2

是。你可以！

*但这取决于服务器配置

在我的情况下（这是用于教育目的的最小代码）：

我通过使用该ID

然后我做了一个多部分的帖子

try {

    String charset = "UTF-8";
    String cookie = "PHPSESSID=aohgsqanei5v2n6su95e0f4vq1";  //custom id

    URLConnection connection;
    InputStream response;

    // Construct the POST data for login change to desired param/value
    String data = "login=" + URLEncoder.encode(".....", charset) +   
            "&password=" + URLEncoder.encode(".....", charset);

    byte[] dataBytes = data.getBytes(charset);

    String _url_login_post = "http://www.domain.com/index.php?action=login";
    connection = new URL(_url_login_post).openConnection();
    connection.setDoOutput(true);
    connection.addRequestProperty("Cookie", cookie);

    OutputStream outputStream =
            new BufferedOutputStream(connection.getOutputStream());
    outputStream.write(dataBytes);
    outputStream.flush();

    response = connection.getInputStream();
    response.read();

    //Find the directory for the SD Card using the API
    //*Don't* hardcode "/sdcard"
    File sdcard = Environment.getExternalStorageDirectory();
    File binaryFile = new File(sdcard, "404.jpg"); //must exist on sdcard

    String param = "content"; //form data param name 
    String _message = "Message here..."; //form data value
    String delimeter = "------WebKitFormBoundary";
    String delimeter_end = "--";
    String boundary = Long.toHexString(System.currentTimeMillis()); //random
    String CRLF = "\r\n"; // Line separator required by multipart/form-data.

    String _url_mpart_post = "http://www.domain.com/index.php?action=user&mode=";
    connection = new URL(_url_mpart_post).openConnection();

    connection.setDoOutput(true);
    connection.setDoInput(true);
    connection.setRequestProperty("Content-Type", 
        "multipart/form-data; boundary=----WebKitFormBoundary" + boundary);
    connection.addRequestProperty("Cookie", cookie);

    OutputStream output = connection.getOutputStream();
    PrintWriter writer = 
            new PrintWriter(new OutputStreamWriter(output, charset), true);

    // Send normal param.
    writer.append(delimeter + boundary).append(CRLF);
    writer.append("Content-Disposition: form-data; name=\"" + 
            param + "\"").append(CRLF);
    writer.append(CRLF).append(_message).append(CRLF).flush();

    // Send binary file.
    writer.append(delimeter + boundary).append(CRLF);
    writer.append("Content-Disposition: 
            form-data; name=\"datafile\"; filename=\"" +
            binaryFile.getName() + "\"").append(CRLF);
    writer.append("Content-Type: " 
            URLConnection.guessContentTypeFromName(binaryFile.getName()))
    .append(CRLF);
    writer.append(CRLF).flush();
    file.copy(binaryFile, output);

    output.flush(); // Important before continuing with writer!
    writer.append(CRLF).flush(); // CRLF indicates end of boundary.

    // End of multipart/form-data.
    writer.append(delimeter + boundary + delimeter_end).append(CRLF).flush();
    writer.close();

    response = connection.getInputStream();
    response.read();

} catch (Exception e) { }

如何在java中更改phpsessid？

2 个答案:

是。你可以！