我面临将api响应转换为实体对象的问题。
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
return Response.success(gson.fromJson(jsonString, clazz), HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
}
}
响应进入jsonString但return Response.success(gson.fromJson(jsonString, clazz), HttpHeaderParser.parseCacheHeaders(response));
以上行无法将空洞响应转换为嵌套实体类。 如果需要更多信息，请告诉我。 JSON响应
{
"tripId": 81204,
"tripMapDetails": {
"category": "Successful Trips",
"categoryImage": "/Icons/HDPIURL/places.png",
"sourceLattitude": -25.969816207885742,
"sourceLongitude": 28.129779815673828,
"destLattitude": -26.1075663,
"destLongitude": 28.0567007
},
"tripDriverDetails": {
"category": "Driver summary",
"categoryImage": "/Icons/HDPIURL/ic_car_tab.png",
"driverName": "Winjit-Test-Driver1",
"carName": "Corolla Toyota",
"rating": 0,
"driverPhoto": "~/Images/Drivers/7_Zebra-no-fin.jpg",
"avgRating": 4.6,
"carRegistrationnumber": "FB86HDGP",
"driverId": 289
},
"tripRideDetails": {
"distance": "0 km",
"distanceCharge": "0",
"durationCharge": "50",
"category": "Ride summary",
"categoryImage": "/Icons/HDPIURL/ride_summary.png",
"tripDate": "27 May 2016",
"tripStartTime": "10:17",
"tripEndTime": "10:17",
"duration": "0.13 min",
"fare": "50",
"isCancelled": false,
"sourceAddress": "Pretoria Main Rd, Midrand, South Africa",
"destinationAddress": "Sandton, Gauteng, South Africa",
"promoCode": "",
"discountAmt": "0",
"isPaywithCash": true,
"finalAmount": "50",
"currency": "R",
"jobId": 81204,
"paymentMethod": "Cash",
"carType": ""
}
}
类，
public class GetTripDetails {
@SerializedName("tripId")
@Expose
private Integer tripId;
@SerializedName("tripMapDetails")
@Expose
private TripMapDetails tripMapDetails;
@SerializedName("tripDriverDetails")
@Expose
private TripDriverDetails tripDriverDetails;
@SerializedName("tripRideDetails")
@Expose
private TripRideDetails tripRideDetails;
/**
*
* @return
* The tripId
*/
public Integer getTripId() {
return tripId;
}
/**
*
* @param tripId
* The tripId
*/
public void setTripId(Integer tripId) {
this.tripId = tripId;
}
/**
*
* @return
* The tripMapDetails
*/
public TripMapDetails getTripMapDetails() {
return tripMapDetails;
}
/**
*
* @param tripMapDetails
* The tripMapDetails
*/
public void setTripMapDetails(TripMapDetails tripMapDetails) {
this.tripMapDetails = tripMapDetails;
}
/**
*
* @return
* The tripDriverDetails
*/
public TripDriverDetails getTripDriverDetails() {
return tripDriverDetails;
}
/**
*
* @param tripDriverDetails
* The tripDriverDetails
*/
public void setTripDriverDetails(TripDriverDetails tripDriverDetails) {
this.tripDriverDetails = tripDriverDetails;
}
/**
*
* @return
* The tripRideDetails
*/
public TripRideDetails getTripRideDetails() {
return tripRideDetails;
}
/**
*
* @param tripRideDetails
* The tripRideDetails
*/
public void setTripRideDetails(TripRideDetails tripRideDetails) {
this.tripRideDetails = tripRideDetails;
}
}
内部课程，
public class TripMapDetails {
@SerializedName("category")
@Expose
private String category;
@SerializedName("categoryImage")
@Expose
private String categoryImage;
@SerializedName("sourceLattitude")
@Expose
private float sourceLattitude;
@SerializedName("sourceLongitude")
@Expose
private float sourceLongitude;
@SerializedName("destLattitude")
@Expose
private float destLattitude;
@SerializedName("destLongitude")
@Expose
private float destLongitude;
/**
*
* @return
* The category
*/
public String getCategory() {
return category;
}
/**
*
* @param category
* The category
*/
public void setCategory(String category) {
this.category = category;
}
/**
*
* @return
* The categoryImage
*/
public String getCategoryImage() {
return categoryImage;
}
/**
*
* @param categoryImage
* The categoryImage
*/
public void setCategoryImage(String categoryImage) {
this.categoryImage = categoryImage;
}
/**
*
* @return
* The sourceLattitude
*/
public float getSourceLattitude() {
return sourceLattitude;
}
/**
*
* @param sourceLattitude
* The sourceLattitude
*/
public void setSourceLattitude(float sourceLattitude) {
this.sourceLattitude = sourceLattitude;
}
/**
*
* @return
* The sourceLongitude
*/
public float getSourceLongitude() {
return sourceLongitude;
}
/**
*
* @param sourceLongitude
* The sourceLongitude
*/
public void setSourceLongitude(float sourceLongitude) {
this.sourceLongitude = sourceLongitude;
}
/**
*
* @return
* The destLattitude
*/
public float getDestLattitude() {
return destLattitude;
}
/**
*
* @param destLattitude
* The destLattitude
*/
public void setDestLattitude(float destLattitude) {
this.destLattitude = destLattitude;
}
/**
*
* @return
* The destLongitude
*/
public float getDestLongitude() {
return destLongitude;
}
/**
*
* @param destLongitude
* The destLongitude
*/
public void setDestLongitude(float destLongitude) {
this.destLongitude = destLongitude;
}
}
答案 0 :(得分：1)
分享你的json和对象类。您的json和类中可能存在数据类型不匹配。在json到gson转换周围放置一个try catch块，看看在解析时是否有任何异常，如果你得到任何异常则发布堆栈跟踪。
修改 - 1
尝试放置此块
try{ gson.fromJson(jsonString, clazz) }catch(Exception e){ e.printStacktrace}
之前
return Response.success(gson.fromJson(jsonString, clazz), HttpHeaderParser.parseCacheHeaders(response));
检查您的日志，看看您是否收到任何例外情况。您的任何类中的数据类型可能不匹配。如果你得到任何记录，请在此发布，以便我可以帮助你。
编辑2 它为我工作。我已经写了下面的课程。
public class MyClass {
private int tripId;
private TripMapDetails tripMapDetails;
private TripDriverDetails tripDriverDetails;
private TripRideDetails tripRideDetails;`
}
public class TripMapDetails {
private String category;
private String categoryImage;
private float sourceLattitude;
private float sourceLongitude;
private float destLattitude;
private float destLongitude;
}
public class TripDriverDetails {
private String category;
private String categoryImage;
private String driverName;
private String carName;
private int rating;
private String driverPhoto;
private float avgRating;
private String carRegistrationnumber;
private int driverId;
}
public class TripRideDetails {
private String distanceCharge;
private String durationCharge;
private String category;
private String categoryImage;
private String tripDate;
private String tripStartTime;
private String tripEndTime;
private String duration;
private String fare;
private boolean isCancelled;
private String sourceAddress;
private String destinationAddress;
private String promoCode;
private String discountAmt;
private boolean isPayWithCash;
private String finalAmount;
private String currency;
private int jobId;
private String paymentMethod;
private String carType;
}
执行以下代码并能够获取所有数据。
try{
MyClass myclass = gson.fromJson(json,MyClass.class);
Log.e("-trip id-",""+myclass.getTripId());
Log.e("-car name-",""+myclass.getTripDriverDetails().getCarName());
Log.e("-reg name-",""+myclass.getTripDriverDetails().getCarRegistrationnumber());
Log.e("-category-",""+myclass.getTripDriverDetails().getCategory());
Log.e("-cat img-",""+myclass.getTripDriverDetails().getCategoryImage());
Log.e("-driver name-",""+myclass.getTripDriverDetails().getDriverName());
Log.e("-dr photo-",""+myclass.getTripDriverDetails().getDriverPhoto());
Log.e("-avg rating-",""+myclass.getTripDriverDetails().getAvgRating());
Log.e("-dri id-",""+myclass.getTripDriverDetails().getDriverId());
Log.e("-rating-",""+myclass.getTripDriverDetails().getRating());
Log.e("------------","------------------------------------------------------------");
Log.e("-map det cat img-",""+myclass.getTripMapDetails().getCategoryImage());
Log.e("- map det category-",""+myclass.getTripMapDetails().getCategory());
Log.e("-dest lat-",""+myclass.getTripMapDetails().getDestLattitude());
Log.e("-dest long-",""+myclass.getTripMapDetails().getDestLongitude());
Log.e("-src lat-",""+myclass.getTripMapDetails().getSourceLattitude());
Log.e("-src long-",""+myclass.getTripMapDetails().getSourceLongitude());
Log.e("------------","------------------------------------------------------------");
Log.e("-ride category-",""+myclass.getTripRideDetails().getCategory());
Log.e("-ride cat img-",""+myclass.getTripRideDetails().getCategoryImage());
Log.e("-car type-",""+myclass.getTripRideDetails().getCarType());
Log.e("-currency-",""+myclass.getTripRideDetails().getCurrency());
Log.e("-dest addr-",""+myclass.getTripRideDetails().getDestinationAddress());
Log.e("-disc amt-",""+myclass.getTripRideDetails().getDiscountAmt());
Log.e("-dist charge-",""+myclass.getTripRideDetails().getDistanceCharge());
Log.e("-duration-",""+myclass.getTripRideDetails().getDuration());
Log.e("-duration charge-",""+myclass.getTripRideDetails().getDurationCharge());
Log.e("-fare-",""+myclass.getTripRideDetails().getFare());
Log.e("-final amt-",""+myclass.getTripRideDetails().getFinalAmount());
Log.e("-payment method-",""+myclass.getTripRideDetails().getPaymentMethod());
Log.e("-promo code-",""+myclass.getTripRideDetails().getPromoCode());
Log.e("-src addr-",""+myclass.getTripRideDetails().getSourceAddress());
Log.e("-trip date-",""+myclass.getTripRideDetails().getTripDate());
Log.e("-trip end time-",""+myclass.getTripRideDetails().getTripEndTime());
Log.e("-trip start time-",""+myclass.getTripRideDetails().getTripStartTime());
Log.e("-trip details job id-",""+myclass.getTripRideDetails().getJobId());
Log.e("-trip details cartype-",""+myclass.getTripRideDetails().getCarType());
Log.e("- cancelled-",""+myclass.getTripRideDetails().isCancelled());
Log.e("- pay with cash-",""+myclass.getTripRideDetails().isPayWithCash());
}catch (Exception e){
e.printStackTrace();
}