gson

问题 This is my json need to be converted to Java object. I have tried many method but not got sucess so if any one can provide suggession on this are most welcome! { "id":"100006077890894", "posts":{ "data":[ { "message":"this is my 4th post to test...((((((((((((((((", "from":{ "name":"Sagar Zope", "id":"100006077890894" }, "id":"100006077890894_1384558691756714", "created_time":"2013-06-12T07:02:52+0000", "comments":{ "data":[ { "from":{ "name":"Sagar Zope", "id":"100006077890894" }, "message":

问题 I have a problem to read json and convert it to Vector of objects, The weird part is this issue occurs only on Android 4.4.2 Device , and on emulator it's working. Here is my code: JsonReader reader = new JsonReader(new StringReader(string)); AllConversationsObject allConversationsObject = gson.fromJson(reader,AllConversationsObject.class); allConversationObject.conversations.get(0) Here is AllConversationsObject: public class AllConversationsObject { Vector<Conversation> conversations;

问题 In my java application i was using REST API that returned data in JSON format, and noticed that this particular API formatted it's dates in a peculiar way: "Nov 1, 2019" , But problem is that the actual date on the server is "2019-11-02".That means I am getiing date minimized to previous date.I have added gson serialization for both Date and Timestamp values using UTC timezone format, but what i noted is the Date values skip the serialization part on the code and only Timestamp values are

问题 I'm currently using Retrofit 2.3 in my Android project and recently the API we are using was updated so that it needs to have "version":number in JSON body in all POST requests. So let's say we need to pass UserCredentials object - previously body of the request was simply serialized using GSON converter and looked like this {"username":"myUsername", "password":"myPassword"} and now it has to have additional "version" field: {"username":"myUsername", "password":"myPassword", "version":1} I've

问题 I'm trying to use Gson to map JSON to POJO where the POJO contains a custom field that is not part of JSON. The field gets updated when the setters of other fields are invoked to add the names of the fields that are being updated to a list. The POJO class looks something like this: public class myPojo { private List<String> dirtyFields; private String id; private String subject; private String title; public myPojo() { dirtyFields = new ArrayList<String>(); } public getId() { return id; }

问题 I'm using GSON for parsing. I'm able to parse json using arrayName but I don't want to use arrayName as it is not static.arrayName can be change and more will be added from server. Please suggest. JSON: { "cityCode": "", "list": { "one": [ { "adults": 2 }, { "adults": 2 }, { "adults": 2 } ], "three": [ { "adults": 2 }, { "adults": 2 }, { "adults": 2 }, { "adults": 2 }, { "adults": 2 } ] } } 回答1: This works for your case. Remember that JSONObject has keys() method which list all its attributes

问题 I have a JSON object that looks like this { "foo":{ "bar":"bar", "echo":"echo" } } But then my Java object looks like this: class Foo { public String foo2; } I would like to serialize echo directly into foo . Is something like this possible: class Foo { @SerializedName("foo/echo") public String foo2; } Or how can I do this with a custom deserializer? 回答1: As an alternative approach you could also create your own type adapter in order to apply JSON expressions to the not existing fields. It

问题 My Retrofit should recieve a List of Bookmarks, and everything worked while I was using WAMP server. When I changed server to external (nothing else changed, just ip address of the server and retrieving of everything else works) I have an error: java.io.EOFException: End of input at line 1 column 1 at com.google.gson.stream.JsonReader.nextNonWhitespace(JsonReader.java:1407) at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:553) at com.google.gson.stream.JsonReader.peek(JsonReader

问题 I want to deserialize an array of complex objects for instance i have object MyTestObject public class MyTestObject{ String param1; String param2; int param3; } now i have an array of objects named MyTestObject and my json looks like this { [ "param1":"something1", "param2:"something2", "param3":3 ], [ "param1":"something1", "param2:"something2", "param3":3 ], [ "param1":"something1", "param2:"something2", "param3":3 ] } this is my code for desearilization public static <T> List<T> fromJSON

问题 When processing a Json string with XMLGregorianCalender using Gson I get the exception: java.lang.RuntimeException: Failed to invoke public javax.xml.datatype.XMLGregorianCalendar() with no args The object which is de-serialized by fromJson(..) with Gson has a XMLGregorianCalender object. What can be the possible solution for the above error? 回答1: Abstract class javax.xml.datatype.XMLGregorianCalendar can not be a instantiated by its default/no-args constructor which makes GSON to fail. If