java调用外部的API

 HttpURLConnection conn = null;
                try {
                    URL url = new URL("http://192.168.10.30:8082/XXX/aaa");
                    conn = (HttpURLConnection) url.openConnection();

                    conn.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
                    conn.setRequestProperty("Connection", "close");
                    conn.setRequestMethod("POST");
                    conn.setDoOutput(true);
                    conn.setRequestProperty("Authorization", token);

                    DataOutputStream wr = new DataOutputStream(conn.getOutputStream());

                    JSONObject json = new JSONObject();
                    json.put("storeId", "002");


                    wr.writeBytes(json.toString());
                    wr.flush();
                    wr.close();

                    int statusCode = conn.getResponseCode();
                    BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                    String printInfo = reader.readLine();


                } catch (Exception ex) {
                    String aa = ex.getMessage();
                } finally {
                    if (conn != null) {
                        conn.disconnect();
                    }
                }