gson

问题 I use this class to store data public class Item(var name:String, var description:String?=null){ } And use it in ArrayList public var itemList = ArrayList<Item>() Use this code to serialize the object val gs=Gson() val itemListJsonString = gs.toJson(itemList) And deserialize itemList = gs.fromJson<ArrayList<Item>>(itemListJsonString, ArrayList::class.java) But this method will give me LinkedTreeMap , not Item , I cannot cast LinkedTreeMap to Item What is correct way to deserialize to json in

问题 I am parsing json data from URl but it starts with "/". I have a data class which is a POJO class in the app. Here is my json file. /{ "data": [ { "id": "1", "text": "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua." }, { "id": "2", "text": "Felis donec et odio pellentesque diam volutpat commodo sed. Non arcu risus quis varius quam quisque. Nibh nisl condimentum id venenatis a condimentum vitae. Vel pharetra vel turpis

问题 i am trying to write my list to jtable in abstract model and then its return to me this error. In my opinion it could be cause by list format? name and amount are in wrong place. This is my full error message: Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: class com.google.gson.internal.LinkedTreeMap cannot be cast to class Model.Medicine (com.google.gson.internal.LinkedTreeMap and Model.Medicine are in unnamed module of loader 'app') There is a code: This is mine

问题 This question already has answers here : Using GSON to parse a JSON array (4 answers) Closed 2 years ago . How to extract the value of "text" by using GSON/Retrofit? { code: 200, lang: "en-ms", text: [ "Burung" ] } 回答1: 1 Create your model class public class ResponseItem { /** * code : 200 * lang : en-ms * text : ["Burung"] */ private int code; private String lang; private List<String> text; public int getCode() { return code; } public void setCode(int code) { this.code = code; } public

问题 This question already has answers here : Using GSON to parse a JSON array (4 answers) Closed 2 years ago . How to extract the value of "text" by using GSON/Retrofit? { code: 200, lang: "en-ms", text: [ "Burung" ] } 回答1: 1 Create your model class public class ResponseItem { /** * code : 200 * lang : en-ms * text : ["Burung"] */ private int code; private String lang; private List<String> text; public int getCode() { return code; } public void setCode(int code) { this.code = code; } public

问题 This question already has answers here : Using GSON to parse a JSON array (4 answers) Closed 2 years ago . How to extract the value of "text" by using GSON/Retrofit? { code: 200, lang: "en-ms", text: [ "Burung" ] } 回答1: 1 Create your model class public class ResponseItem { /** * code : 200 * lang : en-ms * text : ["Burung"] */ private int code; private String lang; private List<String> text; public int getCode() { return code; } public void setCode(int code) { this.code = code; } public

问题 Ok, I know that many of questions like that have been asked, but I have a specific question, which none of the others has. I want to know how I'd go on to parse following JSON file with GSON. { "BUYER": { "IGN": "MGlolenstine", "ProductID": "51" }, "BUYER": { "IGN": "MGlolenstine", "ProductID": "55" }, "BUYER": { "IGN": "MGlolenstine", "ProductID": "0" }, "BUYER": { "IGN": "MGlolenstine", "ProductID": "51" }, "BUYER": { "IGN": "MGlolenstine", "ProductID": "56" } } because when I use this code

问题 I am working with a JSON response that is improperly formatted. All fields are being returned as Strings . Unfortunately, I have no control over the return data . I am using Gson and attempting to parse a JSON object that includes a field like this: { [...] "cost": "9.25" } It should obviously be printed as a Number . When I try to parse this as a String , Number or double I get a NumberFormatException: com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: [...] at com.myapp

问题 I have an ArrayList which contains ArrayLists , each ArrayList in the Root list contains one ArrayList of Integers and one of Strings . I am converting it with Gson to a String to save it with SharedPreferences. But when I am reconverting it, Gson gives me 2.131558489E9 instead of the original int 2131558489 . How can I fix this Problem? Best Regards. Here is how I convert the ArrayList: levelPattern is the ArrayList String levelPatternGson = new Gson().toJson(levelPattern); And this is how I

问题 I have an ArrayList which contains ArrayLists , each ArrayList in the Root list contains one ArrayList of Integers and one of Strings . I am converting it with Gson to a String to save it with SharedPreferences. But when I am reconverting it, Gson gives me 2.131558489E9 instead of the original int 2131558489 . How can I fix this Problem? Best Regards. Here is how I convert the ArrayList: levelPattern is the ArrayList String levelPatternGson = new Gson().toJson(levelPattern); And this is how I