gson

Gson - putting and getting ArrayList of composite objects

由 十年热恋 提交于 2019-12-11 11:32:26
问题 I have class NameAndPostion in which I am going to store name and position of users. And I have created ArrayList of objects of NameAndPosition . ArrayList<NameAndPosition> LocSenders = new ArrayList<NameAndPosition>(); Now I have converted LocSenders into JSON string by using Gson library Gson gson = new Gson(); String json = gson.toJson(LocSenders); I did this conversion to save LocSenders in Shared Pref. Now I want to retrieve all objects in 'LocSenders' which I have stored using Gson JSON

Gson.toJson() misordering items

由 谁都会走 提交于 2019-12-11 11:12:09
问题 I have this output JSON: { "id": 42950262095, "name": "lol", "players": [ { "avatar": { "userId": 25771876384, "userName": "yhht", "role": "Leader", "level": 40, "league": 0, "trophies": 1011, "donatedTroops": 0, "receivedTroops": 0 } }, { "avatar": { "userId": 146035414262, "userName": "ari", "role": "New Member", "level": 8, "league": 0, "trophies": 428, "donatedTroops": 0, "receivedTroops": 0 } }, { "avatar": { "userId": 300659467521, "userName": "cp 221", "role": "New Member", "level": 6,

Java parse JSON String to array or objectlist

由 一曲冷凌霜 提交于 2019-12-11 11:00:52
问题 I'm not very familiar with Java, but got the job to reverse the following JSON-Output to a JAVA object-structure: Sample: {"MS":["FRA",56.12,11.67,"BUY"],"DELL":["MUC",54.76,9.07,"SELL"]} Does someone know, how to build the Arrays / Objetcs and the code to read the strings with Java? JSON or GSON codesamples are welcome. Thanks! 回答1: You could try something like: Gson gson = new Gson(); Type type = new TypeToken<HashMap<String, String>>(){}.getType(); HashMap<String, String> map = new HashMap

How to Create JSON Array for Key Value Pair in java and use it in JQuery Autocomplete to to Separate KEY VALUE

由 狂风中的少年 提交于 2019-12-11 10:42:49
问题 I have been trying very hard and have searched everywhere for this solution but no. I have a JSP Page which has a Jquery autocomplete feature. <body> <% String ValueRec = request.getParameter("Category"); String autosuggest = request.getParameter("autosuggest"); out.println(ValueRec); out.println(autosuggest); %> <form> <input type="hidden" id="autosuggest" name="autosuggest" value="N"/> <input type="text" name="Category" id="Category" value="" id="CategoryID"> <script> $("#Category")

Access resource folder within jar

由 故事扮演 提交于 2019-12-11 10:18:52
问题 I am trying to read the contents of a resource folder once my JAR is built. The resource folder is marked as a source in the IDE settings (IntelliJ). I have tried the following methods: InputStream input = getClass().getResourceAsStream("../objectLocation.json"); JsonReader jsonReader = new JsonReader(new InputStreamReader(input)); I have also tried: JsonReader jsonReader = new JsonReader(new FileReader("../resources/objectLocation.json")); Both of these methods results in : Which results in:

Java GSON Custom Deserializer versioning support

由 和自甴很熟 提交于 2019-12-11 09:53:39
问题 I created a custom deserializer for my Person class. This is just for demonstration purpose. My actual class is more complicated. The json file contains the version of the format and after that an array of persons. On version 1.0 i have a name and age for every person. On version 2.0 i have a name , age and additionally the gender . My problem here is that i do not have access to the version in the custom deserializer, or at least didn't figure out how to get it yet. Is there any other way to

Converting ExecutionResult object to json

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-11 09:15:15
问题 I need to expose a public API, and i need to convert the result of a cypher query into json. I have begun the process, but i am having problems serializing an object of type scala.collection.convert.Wrappers$SeqWrapper that gets returned when using collect() in cypher. Here is the cypher query: MATCH (orders:Orders {id:'locationrestaurant'}), (order:Order), (orders)-[:hasOrder]-(order),(order)-[:orderedProduct]->(product),(client)-[:ordered]->(order) return (order),(client), collect(product)

How do I create JSON data structure when element can be different types in for use by

由 落花浮王杯 提交于 2019-12-11 08:09:54
问题 In this question we see that children element can either be an array of additional data items or a boolean I am using Java to create the data, store in a Data class and then convert to Json using Google Gson. But because children can be two different things I have represented this by having a variable kids in my Data that I use when I need to store as boolean. Then do a String replace on the resulting json to turn it into a children element. But this hack is not very satisfactory and

How do I parse json string that contains list with gson?

由 ε祈祈猫儿з 提交于 2019-12-11 07:32:28
问题 How do I parse this particular json string with Gson in Java? {"orders":[{"oid":"347","status":"1"},{"oid":"348","status":"1"}],"a":14.15,"b":0} What is problematic is the orders list. I suppose one has to use a "type token" parameter to Gson.parse(json,type-toke), but it is not clear to me how this can be done. 回答1: You have to create java types that it can be mapped to. So, you would have something like this. public class Result { private List<Order> orders; private Number a; private Number

In JSON serialization howto ignore some of Class1 field(s) in case Class1 is a field of Class2?

由 ぃ、小莉子 提交于 2019-12-11 07:26:17
问题 I searched for this question on stackoverflow and google and I couldn't find any proper answer. How do I ignore fields from an object within an object? I think it will be much easier to understand with an example: (Editors note, in title: Class1 = Engine a field for Class2 = Car ) class Car { Integer id; Integer numberOfWheels; Engine engine; } class Engine { Integer id; String name; String producer; Integer horsePower; Integer weight; } The Car JSON should consist of all fields, but the
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