HarmonyOS 鸿蒙Next SDK api6连接网络接口报错

这是我的写法 你可以参考下 

            if (NetworkUtil.isNetworkConnectedInternet(MyApplication.application)) {
                InputStream stream;
                HttpURLConnection conn = null;
                try {
                    URL url = new URL(Const.BASE_URI + zsonObject.getString(PATH_KEY));
                    conn = (HttpURLConnection) url.openConnection();
                    conn.setReadTimeout(6000);
                    String contentType = zsonObject.getString(CONTENT_TYPE);
                    String requestType = zsonObject.getString(REQUEST_METHOD_KEY);
                    conn.setRequestMethod(requestType);
                    boolean isPost = requestType.equals("POST");
                    conn.setDoOutput(isPost);
                    if (contentType.equals("multipart/form-data")) {
                        conn.addRequestProperty(CONTENT_TYPE, contentType + ";boundary=" + UUID.randomUUID());
                    } else {
                        conn.addRequestProperty(CONTENT_TYPE, contentType);
                    }
                    conn.addRequestProperty("token", zsonObject.getString(Const.LOGIN_TOKEN));
                    conn.setDoInput(true);
                    conn.setUseCaches(false);
                    conn.connect();
                    if (isPost) {
                        String body = zsonObject.getString("body");
                        OutputStream out = conn.getOutputStream();
                        out.write(body.getBytes());
                        out.flush();
                        out.close();
                    }
                    int responseCode = conn.getResponseCode();
                    String data;
                    ResultBean resultBean = null;
                    if (responseCode == 200) {
                        stream = conn.getInputStream();
                        data = StreamUtil.readInputStreams(stream);
                        resultBean = ZSONObject.stringToClass(data, ResultBean.class);
                    } else {
                        resultBean = new ResultBean();
                        resultBean.setCode(responseCode);
                        stream = conn.getErrorStream();
                        data = StreamUtil.readInputStreams(stream);
                        resultBean.setMsg(data);
                    }
                    return resultBean;
                } catch (Exception e) {
                    CrashHandler.saveErrorLog(e);
                    return null;
                } finally {
                    if (conn != null) {
                        conn.disconnect();
                    }
                }
            }