我正在使用 Retrofit，但在从内部类的响应中获取数据时遇到一些问题。
依赖性:
//// retrofit, gson
implementation 'com.google.code.gson:gson:2.6.2'
implementation 'com.squareup.retrofit2:retrofit:2.4.0'
implementation 'com.squareup.retrofit2:converter-gson:2.0.2'
implementation 'com.squareup.okhttp3:logging-interceptor:3.9.1'
implementation 'com.android.support:recyclerview-v7:26.1.0'
implementation 'com.github.bumptech.glide:glide:3.7.0'
implementation 'com.squareup.okhttp3:logging-interceptor:3.9.1'
<强>1。改造客户端:
public class RetrofitClient {
private static Retrofit retrofit = null;
public static Retrofit getRetofitClient(String BaseUrl) {
retrofit=null;
if (retrofit == null) {
retrofit = new Retrofit.Builder()
.baseUrl(BaseUrl)
.addConverterFactory(GsonConverterFactory.create())
.client(new OkHttpClient.Builder()
.addInterceptor(new LoggingInterceptor()).build())
.build();
}
return retrofit;
}
<强>2。 RetrofitListener : - 我的界面
public interface RetrofitListener<T> {
void handleSuccessResponse(T response,int type);
void handleError(T error);}
<强>3。 RequestParameters - 我的请求参数的类
public class RequestParameters {
public static Map<String,String> login(String username,String password,String device_token,String device_type){
Map<String,String> requestBody=new HashMap<>();
requestBody.put("username",username);
requestBody.put("password",password);
requestBody.put("device_token",device_token);
requestBody.put("device_type",device_type);
return requestBody;
}}
<强>4。 ApiPresenter -我的api演示者类
public class ApiPresenter {
private RetrofitListener mListener;
private ApiInterface mInterface;
private Activity mActivity;
public ProgressDialog p;
public ApiPresenter(Activity activity,RetrofitListener listener,ApiInterface serviceInterface){
this.mListener=listener;
this.mInterface=serviceInterface;
this.mActivity=activity;
}
public void showProgressDialog(){
p=new ProgressDialog(mActivity);
p.setMessage(mActivity.getResources().getString(R.string.strLoading));
p.requestWindowFeature(Window.FEATURE_NO_TITLE);
p.setCancelable(false);
if(p!=null && !p.isShowing()){
p.show();
}
}
public void dismissDialog(){
if(p!=null && p.isShowing()){
p.dismiss();
}
}
public Call<User> login(Map<String,String> params, final int requestCode, boolean isShowDialog){
Log.e("PARAMS >> USERNAME : ",params.get("username"));
Log.e("PARAMS >> PASSWORD :",params.get("password"));
if(isShowDialog)
showProgressDialog();
Call<User> call = mInterface.login(params);
call.enqueue(new Callback<User>() {
@Override
public void onResponse(Call<User> call, Response<User> response) {
dismissDialog();
if(mListener!=null){
mListener.handleSuccessResponse(response.body(),requestCode);
}
}
@Override
public void onFailure(Call<User> call, Throwable t) {
dismissDialog();
mListener.handleError(t.getMessage());
}
});
return null;
}
public Call<User> signup(Activity activity, Map<String, String> params, final int requestCode, boolean isShowDialog) {
if (isShowDialog) {
showProgressDialog(activity);
}
Call<SignUpModel> userCall = apiService.signup(params);
userCall.enqueue(new Callback<SignUpModel>() {
@Override
public void onResponse(Call<SignUpModel> call, Response<SignUpModel> response) {
dismisProgressDialog();
listener.handleSuccessResponse(response.body(), requestCode);
}
@Override
public void onFailure(Call<SignUpModel> call, Throwable t) {
Log.e("Failure", "==" + t.getMessage());
dismisProgressDialog();
listener.handleErrorResponse(t.getMessage());
}
});
return null;
}
public Call<ResultData> getResults(Activity activity, String input,String format, final int requestCode, boolean isShowDialog) {
if (isShowDialog) {
showProgressDialog(activity);
}
Call<ResultData> userCall = apiService.getVin(input,format);
userCall.enqueue(new Callback<ResultData>() {
@Override
public void onResponse(Call<ResultData> call, Response<ResultData> response) {
dismisProgressDialog();
listener.handleSuccessResponse(response.body(), requestCode);
}
@Override
public void onFailure(Call<ResultData> call, Throwable t) {
Log.e("Failure", "==" + t.getMessage());
dismisProgressDialog();
listener.handleErrorResponse(t.getMessage());
}
});
return null;
}
}}
5.User.java -我的模型类
public class User {
private Integer status;
private Data data;
private String message;
public Integer getStatus() {
return status;
}
public void setStatus(Integer status) {
this.status = status;
}
public Data getData() {
return data;
}
public void setData(Data data) {
this.data = data;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
class Data {
@SuppressLint("id")
private String id;
@SuppressLint("first_name")
private String firstName;
@SuppressLint("last_name")
private String lastName;
@SuppressLint("email")
private String email;
@SuppressLint("username")
private String username;
@SuppressLint("password")
private String password;
@SuppressLint("photo")
private String photo;
@SuppressLint("birthdate")
private String birthdate;
@SuppressLint("gender")
private String gender;
@SuppressLint("token")
private String token;
@SuppressLint("device_type")
private String deviceType;
private Map<String, Object> additionalProperties = new HashMap<String, Object>();
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPhoto() {
return photo;
}
public void setPhoto(String photo) {
this.photo = photo;
}
public String getBirthdate() {
return birthdate;
}
public void setBirthdate(String birthdate) {
this.birthdate = birthdate;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getToken() {
return token;
}
public void setToken(String token) {
this.token = token;
}
public String getDeviceType() {
return deviceType;
}
public void setDeviceType(String deviceType) {
this.deviceType = deviceType;
}
}}
<强>6。调用——单击按钮时调用登录服务
public void login(View view) {
if(isNetworkConnected(MainActivity.this)){
new ApiPresenter(MainActivity.this,this,apiService)
.login( RequestParameters.login("jaimin","123456","devicetoken","0"),CODE_LOGIN,true);
}else{
Toast.makeText(this, ""+getResources().getString(R.string.toast_check_internet), Toast.LENGTH_SHORT).show();
}
}
7.我的HandleResponse方法——重写接口(interface)方法
@Override
public void handleSuccessResponse(Object response, int type) {
switch(type){
case CODE_REGISTER_USER:
if (response instanceof UserModel)
handleResponseCatAssignProductList((UserModel) response);
break;
case CODE_LOGIN:
if(response instanceof User){
handleLoginREsponse((User)response);
}
break;
case CODE_SIGNUP:
if(response instanceof SignUpModel){
handleSignupREsponse((SignUpModel)response);
}
break;
}
}
<强>8。 API服务
public interface ApiService {
@FormUrlEncoded
@POST("webservice/login")
Call<User> login(@FieldMap Map<String, String> params);
@FormUrlEncoded
@POST("webservice/signup")
Call<UserModel> register(@FieldMap Map<String, String> params);
@Headers("Authorization:U2FsdGVkX1+2uAhde5/Z1w/k=")
@POST("customerRegistration.php")
Call<SignUpModel> signup(@Body Map<String,String> params);
@GET("/api/vehicles/DecodeVinValues/{input}")
Call<ResultData> getVin(@Path("input") String input, @Query("format") String format);
@GET("FlowersList.php")
Call<JsonArray> getFlower();}
问题:我正在收到回复。但是，数据正在变空。我收到的回复是，请提供用户名和密码。
在 logcat 中，我得到:
10-12 14:42:42.436 3387-3387/com.example.jaimin.retrofitcommondemo E/PARAMS >> USERNAME :: jaimin
10-12 14:42:42.436 3387-3387/com.example.jaimin.retrofitcommondemo E/PARAMS >> PASSWORD :: 123456
10-12 14:47:06.788 3387-3387/com.example.jaimin.retrofitcommondemo E/<<<<<<< response: >>User and password could not be null
可能是什么问题？
编辑
我的 JSON 字符串:
{
"status":1,
"data":{
"id":"591",
"first_name":"jaimin",
"last_name":"modi",
"email":"<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f98d9c8a8dc8cbb99e94989095d79a9694" rel="noreferrer noopener nofollow">[email protected]</a>",
"username":"jaimin",
"password":"e1ba59abbe56e057f20f883e",
"photo":"http:temp.jpg",
"birthdate":"1992-12-24",
"gender":"",
"token":"dsfsf",
"device_type":"0"
},
"message":"Successful Login"
}
<强>9。日志拦截器
public class LoggingInterceptor implements Interceptor {
@Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request request = chain.request();
Response response = chain.proceed(request);
final String responseString = new String(response.body().bytes());
Log.e("REsponse", "Response: " + responseString);
return response.newBuilder()
.body(ResponseBody.create(response.body().contentType(), responseString))
.build();
}}
最佳答案
将数据类的可见性更改为公开。
而不是
class Data {
}
使用
public class Data {
}
关于android - 使用 Retrofit 获取 json 响应数据时出现问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52776284/