public static String sendMessage(String xml, String urlpath) {

    String msg = "";
    OutputStreamWriter wr = null;
    BufferedReader rd = null;
    HttpURLConnection conn = null;
    try {
        URL url = new URL(urlpath);
        conn = (HttpURLConnection) url.openConnection();
        conn.setConnectTimeout(10000);
        conn.setReadTimeout(10000);
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setUseCaches(false);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("Accept-Charset", "utf-8");

        wr = new OutputStreamWriter(conn.getOutputStream(), "utf-8");
        wr.write(xml);
        wr.flush();
        rd = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
        String line;
        while ((line = rd.readLine()) != null) {
            msg = msg + line;
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            if (wr != null)
                wr.close();
            if (rd != null)
                rd.close();
            if (conn != null)
                conn.disconnect();
        } catch (Exception e) {

        }
    }
    return msg;
}

用上面的代码可以了，我之前遇到这个问题，

我也遇到了这种问题，从来没有推送成功过。

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