我已經看到這個問題幾次在stackoverflow問。但這些答案不解決我的問題,我是新的retrofit.i'm使用改造我的登錄interface.i'm發送用戶名,密碼,然後響應將是一個array.when我試圖登錄裏面兩個記號,登錄貓表示java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT
java.lang.IllegalStateException:預計BEGIN_ARRAY,但是BEGIN_OBJECT --ANDROID RETROFIT2
請求
POST:形狀urlencorded
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(AllConstants.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
public void getUser(String username,String password){
WebserviceAPI apiService =retrofit.create(WebserviceAPI.class);
Call<UserResponse> call = apiService.getUsers("signin",username,password);
call.enqueue(new Callback<UserResponse>() {
@Override
public void onResponse(Call<UserResponse> call, Response<UserResponse> response) {
UserResponse result = response.body();
Log.d("res",""+result.getData());
}
@Override
public void onFailure(Call<UserResponse> call, Throwable t) {
Log.d("res",""+t.getMessage());
}
});
}
Model類
public class User {
String id;
String username;
String email;
String access_token;
String refresh_token;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getAccess_token() {
return access_token;
}
public void setAccess_token(String access_token) {
this.access_token = access_token;
}
public String getRefresh_token() {
return refresh_token;
}
public void setRefresh_token(String refresh_token) {
this.refresh_token = refresh_token;
}
}
UserResponse.java
public class UserResponse {
List<User> data;
public List<User> getData() {
return data;
}
public void setData(List<User> data) {
this.data = data;
}
}
接口
public interface WebserviceAPI {
@FormUrlEncoded
@POST("auth")
Call<UserResponse> getUsers(@Field("module_action") String signin ,@Field("username") String username,@Field("password") String password);
}
從服務器側響應:PHP
$response = ['status' => true,
'message' => "Successfully logged in",
'data' => [
'access_token' => $accessToken,
'refresh_token' => $refreshToken
],
];
$this->returnJson($response, 200);
當我在郵差運行,響應是象下面
--------更新-----------
某些響應僅包含status
和message
。
響應例如:
{
"status": false,
"message": "Inactive User"
}
的話,我想message
。
我已經如下編輯UserResponse
並試圖獲得message
。然後表示java.lang.NullPointerException at com.android.app.myapp.Login$3.onResponse(Login.java:92)
public class UserResponse {
@SerializedName("status")
@Expose
private String status;
@SerializedName("message")
@Expose
private String message;
User data;
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public User getData() {
return data;
}
public void setData(User data) {
this.data = data;
}
}
public void getUser(String username,String password){
WebserviceAPI apiService =retrofit.create(WebserviceAPI.class);
Call<UserResponse> call = apiService.getUsers("signin",username,password);
call.enqueue(new Callback<UserResponse>() {
@Override
public void onResponse(Call<UserResponse> call, Response<UserResponse> response) {
UserResponse result = response.body();
//User data = result.getData();
Log.d("userresponse",""+result.getMessage());
}
@Override
public void onFailure(Call<UserResponse> call, Throwable t) {
Log.d("res",""+t.getMessage());
}
});
}
請提供堆棧跟蹤信息或錯誤日誌 – silverFoxA
在您的JSON「數據」不一個列表是一個對象。因此請嘗試刪除列表數據並使用用戶數據。 –