I’m trying to have a custom date format in Gson output, but .setDateFormat(DateFormat.FULL) doesn’t seem to work and it the same with .registerTypeAdapter(Date.class, new DateSerializer()). It’s like Gson doesn’t care about the object “Date” and print it in its way. How can I change that? Thanks EDIT: @Entity public class AdviceSheet { public Date lastModif; … Read more
Using the Gson library, how do I convert a JSON string to an ArrayList of a custom class JsonLog? Basically, JsonLog is an interface implemented by different kinds of logs made by my Android app–SMS logs, call logs, data logs–and this ArrayList is a collection of all of them. I keep getting an error in … Read more
I want to be able to access properties from a JSON string within my Java action method. The string is available by simply saying myJsonString = object.getJson(). Below is an example of what the string can look like: { ‘title’: ‘ComputingandInformationsystems’, ‘id’: 1, ‘children’: ‘true’, ‘groups’: [{ ‘title’: ‘LeveloneCIS’, ‘id’: 2, ‘children’: ‘true’, ‘groups’: [{ … Read more
I’m requesting data from a server which returns data in the JSON format. Casting a HashMap into JSON when making the request wasn’t hard at all but the other way seems to be a little tricky. The JSON response looks like this: { “header” : { “alerts” : [ { “AlertID” : “2”, “TSExpires” : … Read more
Can’t seem to figure this out. I’m attempting JSON tree manipulation in GSON, but I have a case where I do not know or have a POJO to convert a string into, prior to converting to JsonObject. Is there a way to go directly from a String to JsonObject? I’ve tried the following (Scala syntax): … Read more
I’m trying to parse a JSON string like this one [ { “updated_at”:”2012-03-02 21:06:01″, “fetched_at”:”2012-03-02 21:28:37.728840″, “description”:null, “language”:null, “title”:”JOHN”, “url”:”http://rus.JOHN.JOHN/rss.php”, “icon_url”:null, “logo_url”:null, “id”:”4f4791da203d0c2d76000035″, “modified”:”2012-03-02 23:28:58.840076″ }, { “updated_at”:”2012-03-02 14:07:44″, “fetched_at”:”2012-03-02 21:28:37.033108″, “description”:null, “language”:null, “title”:”PETER”, “url”:”http://PETER.PETER.lv/rss.php”, “icon_url”:null, “logo_url”:null, “id”:”4f476f61203d0c2d89000253″, “modified”:”2012-03-02 23:28:57.928001″ } ] into a list of objects. List<ChannelSearchEnum> lcs = (List<ChannelSearchEnum>) new Gson().fromJson( jstring , … Read more
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 7 years ago. Improve this question After searching through some existing libraries for JSON, I have finally ended up with these … Read more
I’m trying to learn Gson and I’m struggling with field exclusion. Here are my classes public class Student { private Long id; private String firstName = “Philip”; private String middleName = “J.”; private String initials = “P.F”; private String lastName = “Fry”; private Country country; private Country countryOfBirth; } public class Country { private Long … Read more
I want to transfer a list object via Google Gson, but I don’t know how to deserialize generic types. What I tried after looking at this (BalusC’s answer): MyClass mc = new Gson().fromJson(result, new List<MyClass>() {}.getClass()); but then I get an error in Eclipse saying “The type new List<MyClass>() {} must implement the inherited abstract … Read more
What is the preferred method for returning null values in JSON? Is there a different preference for primitives? For example, if my object on the server has an Integer called “myCount” with no value, the most correct JSON for that value would be: {} or { “myCount”: null } or { “myCount”: 0 } Same … Read more
