java - RequestParams params.put 方法未接收整数

Question

我正在使用 Rest 服务从数据库获取国家/地区的州列表 (countryid)。该服务在 Tomcat 中运行良好，但在 Android 中无法运行。以下是调用 Rest 服务的代码。 params.put("countryid",countryID) 方法不接收整数。您能帮我解决这个问题吗？

public void getDataForStateSpinner(){
    //new StateSpinnerAsync().execute();
    System.out.println("getDataForStateSpinner(), spnCountry adapter: " + spnCountry);
    System.out.println("spnCountry.getSelectedItem(): " + spnCountry.getSelectedItem());
    if (spnCountry.getSelectedItem()!=null){
        System.out.println("getDataForStateSpinner(), spnCountry adapter isn't empty");
        final Country country = (Country) spnCountry.getSelectedItem();
        int countryID = country.getCountryID();
        RequestParams params = new RequestParams();
        if (countryID>=0){
            params.put("countryid", countryID);
            invokeWS_State(params);
        } else{
            Toast.makeText(mParent.get(), "Can not get CountryID", Toast.LENGTH_LONG).show();
        }
    } 
}

    public void invokeWS_State(RequestParams params){
    System.out.println("Inside invokeWS_State");
    AsyncHttpClient client = new AsyncHttpClient();
    System.out.println("Inside invokeWS_State, client: " + client);
    System.out.println("Inside invokeWS_State onSuccess, params: " + params);
    client.get(stateURL, params, new AsyncHttpResponseHandler(){
        @Override
        public void onSuccess(String respond){
            try{
                System.out.println("Inside invokeWS_State onSuccess, stateURL: " + stateURL);

                System.out.println("Inside invokeWS_State onSuccess, respond:" + respond);
                JSONArray jsonArr = new JSONArray(respond);
                //JSONObject jsonObject = jsonArr.getJSONObject(0);
                System.out.println("Inside invokeWS_State onSuccess jsonArr:" + jsonArr);
                String stateList = jsonArr.toString();
                System.out.println("Inside invokeWS_State onSuccess stateList:" + stateList);
                states = (ArrayList<State>) fromJasonToJava_State(stateList);
                for (State state : states) {
                    System.out.println("State id: " + state.getStateID() + " name: " + state.getStateName());
                }

                spnStateAdapter = new ArrayAdapter<State>(mParent.get(), android.R.layout.simple_spinner_dropdown_item, states);
                spnStateAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
                spnState.setAdapter(spnStateAdapter);

            } catch (JSONException e){
                e.printStackTrace();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        @Override
        public void onFailure(int statusCode, Throwable error, String content){
            String resultString = null;
            if (statusCode == 404){
                resultString = "Requested resource not found";
                Toast.makeText(mParent.get(), resultString, Toast.LENGTH_LONG).show();
            } else if (statusCode == 500) {
                resultString = "Something went wrong at server end!";
                Toast.makeText(mParent.get(), resultString, Toast.LENGTH_LONG).show();
            } else {
                resultString = "Unexpected Error occcured! [Most common Error: Device might not be connected to Internet or remote server is not up and running]";
                Toast.makeText(mParent.get(), resultString, Toast.LENGTH_LONG).show();
            }

        }
    });
}

下面是在 Tomcat 中运行良好的 Rest 服务:

@Path("/State")
public class StatesResource {
@GET
@Path("/GetStates")
@Produces(MediaType.APPLICATION_JSON)
//http://localhost:8080/com.fms.FMSRestfulWS/State/GetStates?countryid=1
public String getStates(@DefaultValue("1") @QueryParam("countryid") int countryID){
    String states = null;
    try{
        ArrayList<State> feedData = null;
        StateLoading stateLoading = new StateLoading();
        feedData = stateLoading.getAllStatesForCountry(countryID);
        Gson gson = new Gson();
        states = gson.toJson(feedData);
    }catch (Exception e){
        System.out.println("System Error " + e);
    }

    return states;
}

}

Answer 1

只做一项改变，它就会完美地工作。

 params.put("countryid", ""+countryID);