409从服务器返回状态

Question

当我打电话给网络请求时，我得到'409状态'。是否因为我的代码错误或是Web服务错误而发生？

以下是我的代码。我试图做的是从有效负载请求中获取响应。

Random random = new Random();
    URL url = new URL("https://biz.mobizz.lk/apicall/prepaidloan/afc");
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestMethod("POST");
    connection.setDoOutput(true);
    connection.setRequestProperty("Content-Type", "application/json");
    connection.setRequestProperty("Accept", "application/json");
    connection.setRequestProperty("Authorization", "Bearer f74e85137735aa937492hdasd1");
    OutputStreamWriter osw = new OutputStreamWriter(connection.getOutputStream());
    osw.write(String.format("{\"mobile\":\"72131185\",\"method\":\"SMS\",\"loanAmount\":\"200000\"}"));
    osw.flush();
    osw.close();
    System.err.println(connection.getResponseMessage());