Http请求Body中携带raw XML形式

public static void httpPost(String url, String xml) throws Exception {
    HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
    connection.setRequestMethod("POST");
    connection.setRequestProperty("Content-Type", "application/xml");
    connection.setRequestProperty("Content-Length", String.valueOf(xml.length()));
    connection.setDoOutput(true);
    OutputStream outputStream = connection.getOutputStream();
    outputStream.write(xml.getBytes());
    outputStream.flush();
    if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
        InputStream inputStream = connection.getInputStream();
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
        String line;
        StringBuilder response = new StringBuilder();
        while ((line = bufferedReader.readLine()) != null) {
            response.append(line);
        }
        bufferedReader.close();
        System.out.println("请求成功： " + response.toString());
    } else {
        System.out.println("请求失败，响应头：" + connection.getHeaderFields());
        System.out.println("请求失败，响应码：" + connection.getResponseCode());
    }
}