根据要求发布有关身体变化的数据

Question

我有一个发帖请求。在请求的正文中，有如下数据：

"username=michel&password=abc+defg"

当我发布发送请求时，我使用Packet Capture进行嗅探，当我查看数据时，看到的是“”（空格）而不是“ +”（加号），在我的情况下看起来像这样：

"username=michel&password=abc defg"

以UTF-8编码的数据。

这是我的代码（在添加之前以UTF-8编码的dataToSend）

public static HttpWebResponse getHttpWebResponse(String url, String cookie, StringBuffer dataToSend, String referer) {
    HttpWebResponse response = new HttpWebResponse();

    try {
        http_connect = (HttpURLConnection) new URL(url).openConnection();//, Connector.READ_WRITE, true);

        if (!isNullOrEmpty(dataToSend)) {
            http_connect.setRequestMethod("POST");
            http_connect.setDoInput(true);
            http_connect.setDoOutput(true);
        } else {
            http_connect.setRequestMethod("GET");
        }

        http_connect.setInstanceFollowRedirects(false);
        if (!isNullOrEmpty(cookie)) {
            COOKIES.append(cookie);
        }


        http_connect.setRequestProperty("cookie", COOKIES.toString());

        http_connect.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.2; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)");
        http_connect.setRequestProperty("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
        http_connect.setRequestProperty("Http-version", "HTTP/1.1");
        http_connect.setRequestProperty("Cache-Control", "no-cache");
        http_connect.setRequestProperty("connection", "Keep-Alive");

        if (!isNullOrEmpty(dataToSend))
            http_connect.setRequestProperty("Content-Length", String.valueOf(dataToSend.toString().getBytes("UTF-8").length));//
        if (!isNullOrEmpty(referer))
            http_connect.setRequestProperty("Referer", referer);
        http_connect.setConnectTimeout(App.DEFAULT_TIMEOUT);
        if (!isNullOrEmpty(dataToSend)) {
            http_os = http_connect.getOutputStream();
            http_os.write(dataToSend.toString().getBytes("UTF-8"));
            http_os.flush();
        }

        response.result = http_connect.getResponseCode();
        response.location = http_connect.getHeaderField("location");
        response.cookies = getAllCookiesFromHeader(http_connect);
        if (response.result == HttpURLConnection.HTTP_OK) {
            http_is = http_connect.getInputStream();
            int ch = 0;
            byte[] buff = new byte[512];
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            while (((ch = http_is.read(buff)) != -1)) {
                if (ch < 512)
                    baos.write(buff, 0, ch);
                else
                    baos.write(buff);

                buff = new byte[512];
            }

            if (baos.size() > 0) {
                response.body = new String(baos.toByteArray(), "UTF-8");
            }
        }
        Logger.log("urlTest2 =  " + url.toString() + ", response = " + http_connect.getResponseCode());
    } catch (Exception e) {
    } finally {
    }
    return response;
}