OkHttpClient client = new OkHttpClient().newBuilder()
.build();
MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "");
Request request = new Request.Builder()
.url("https://xxx.xxx.xxx")
.method("POST", body)
.addHeader("env", "")
.addHeader("Key", "123456")
.addHeader("Authorization", "Bearer ")
.addHeader("Id", "")
.addHeader("Content-Type", "application/json")
.build();
Response response = client.newCall(request).execute();