java - 如何修复 POST 请求 Retrofit 上的错误 400

Question

无法发送post request ，我试了一下生成的JSON与 postman map 中带有适当的头.它工作正常，但我得到 error 400与 retrofit .这里是 API class

Error : E/onResponse: Response{protocol=http/1.1, code=400, message=Bad Request, url}

public interface SMS {
    @POST("sendsms?country=91")
    Call<ResponseBody> send (
        @HeaderMap Map<String, String> headers,
        @Body String obj
        );
}

   JSONObject object = new JSONObject();
    JSONArray num = new JSONArray();
    JSONArray ar = new JSONArray();
    JSONObject sms = new JSONObject();
    try {
        num.put("9876543210");

        sms.put("message", "Hi How are you?");
        sms.put("to", num);

        ar.put(sms);

        object.put("sender", "BILLWT");
        object.put("route", "4");
        object.put("country", "91");
        object.put("sms", ar);

    } catch (JSONException e) {
        e.printStackTrace();
    }

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(BASE_URL)
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    SMS sms1 = retrofit.create(SMS.class);

    HashMap<String, String> headers = new HashMap<>();
    headers.put("Content-Type", "application/json");
    headers.put("authkey", "29gsdg2AJsddfgddfP25fdgb5");

    Call<ResponseBody> call = sms1.send(headers, object.toString());

    call.enqueue(new Callback<ResponseBody>() {
        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
            Log.e("onResponse ", " " + response.toString());
        }

        @Override
        public void onFailure(Call<ResponseBody> call, Throwable t) {
            Log.e("onFailure ", " " + t.getMessage());
        }
    });

Answer 1

只需添加您的 country至@Query范围。

像这样:

public interface SMS {
    @POST("sendsms")
    Call<ResponseBody> send (
        @HeaderMap Map<String, String> headers,
        @Body String obj,
        @Query("country") int country
        );
}

它将根据您的需要自动添加。

您的代码更改如下:

JSONObject object = new JSONObject();
    JSONArray num = new JSONArray();
    JSONArray ar = new JSONArray();
    JSONObject sms = new JSONObject();
    try {
        num.put("9876543210");

        sms.put("message", "Hi How are you?");
        sms.put("to", num);

        ar.put(sms);

        object.put("sender", "BILLWT");
        object.put("route", "4");
        object.put("country", "91");
        object.put("sms", ar);

    } catch (JSONException e) {
        e.printStackTrace();
    }

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(BASE_URL)
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    SMS sms1 = retrofit.create(SMS.class);

    HashMap<String, String> headers = new HashMap<>();
    headers.put("Content-Type", "application/json");
    headers.put("authkey", "29gsdg2AJsddfgddfP25fdgb5");

    Call<ResponseBody> call = sms1.send(headers, object.toString(),91);

    call.enqueue(new Callback<ResponseBody>() {
        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
            Log.e("onResponse ", " " + response.toString());
        }

        @Override
        public void onFailure(Call<ResponseBody> call, Throwable t) {
            Log.e("onFailure ", " " + t.getMessage());
        }
    });