json-deserialization

问题 I have an entity with attributes of type MultiPolygon and Point; so I'm making a get request but this is returning a SerializationException. I researched it and saw that I have to put some notes, create a configuration class and put the corresponding dependency in pom.xml. Follow as I did below: Entity: package com.zxventures.model; @Entity @Table(name = "pdv") public class PDV implements Serializable { private static final long serialVersionUID = 1L; @Column(name="coverage_area")

问题 I'm using RestSharp 106.6.10. I expect the response to return a simple object with four string properties. I've defined the object's class in C# with the correct property types, spelling, and capitalization. I'm posting a request and getting a response with no errors. The response's Content appears to be clean JSON, with a Data object that includes good values for my "TransactionAcknowledgement" object. But here's my problem: the Data object returned by RestSharp has null values for the

问题 Dear folks I need you advice. I'm, trying to implement custom Jackson deserializer for maps but having difficulties with it. As an input data I have the following json: { "someMap": { "one_value": "1", "another_value: "2" }, "anotherMap": "{\"100000000\": 360000,\"100000048\": 172800,\"100000036\": 129600,\"100000024\": 86400,\"100000012\": 43200}" } As you can see in the second case it has json map inside node value(I'm doing it in that way by intention. Because I want to replace the value

问题 I have a JSON string coming from a file with multiple JSON objects that I need to deserialise into one merged C# object. File1.json { "manage_employees_section_title": { "value": "Manage employees", "description": "The mange employees section title" } } { "manage_operations_section_title": { "value": "Manage operations", "description": "The mange operations section title" } } Even though there are multiple JSON objects in the file, I would really like to have back from deserialisation (or

问题 I have a value object serialized and deserialized using Jackson. The VO has two fields: x and y. But invoking setY makes sense only when x is set. Is there any way I can make sure that setX is invoked earlier than setY during de-serialization? 回答1: You can do it only by implementing custom deserializer for your POJO (VO) class. Let assume that you POJO class looks like this: class Point { private int x; private int y; //getters, setters, toString } Now, you can implement deserializer. You can

问题 I am using .Net Core 3.0 and have the following string which I need to deserialize with Newtonsoft.Json: { "userId": null, "accessToken": null, "refreshToken": null, "sessionId": null, "cookieExpireTimeSpan": { "ticks": 0, "days": 0, "hours": 0, "milliseconds": 0, "minutes": 0, "seconds": 0, "totalDays": 0, "totalHours": 0, "totalMilliseconds": 0, "totalMinutes": 0, "totalSeconds": 0 }, "claims": null, "success": false, "errors": [ { "code": "Forbidden", "description": "Invalid username

问题 I have the following json: { "data": [ { "timestamp": "2019-11-07T00:23:52.095Z", "symbol": "XBTUSD", "side": "Buy", "size": 1, "price": 9356.5, "tickDirection": "PlusTick", "trdMatchID": "01476235-ad89-1777-9067-8ce6d0e29992", "grossValue": 10688, "homeNotional": 0.00010688, "foreignNotional": 1 } ] } The last 3 fields are optional. When I deserialize it in C#, I do the following: public class Trade { public DateTime Timestamp; public string Symbol; public string Side; public long Size;

问题 I have the following json: { "data": [ { "timestamp": "2019-11-07T00:23:52.095Z", "symbol": "XBTUSD", "side": "Buy", "size": 1, "price": 9356.5, "tickDirection": "PlusTick", "trdMatchID": "01476235-ad89-1777-9067-8ce6d0e29992", "grossValue": 10688, "homeNotional": 0.00010688, "foreignNotional": 1 } ] } The last 3 fields are optional. When I deserialize it in C#, I do the following: public class Trade { public DateTime Timestamp; public string Symbol; public string Side; public long Size;

问题 I have this Object public class ConversationAPI { [JsonProperty(PropertyName = "lU")] public DateTime LastUpdated { get; set; } [JsonProperty(PropertyName = "m", TypeNameHandling = TypeNameHandling.All)] public List<Message> Messages { get; set; } } Which I send from the API as a json and I deserialize in my Client Application. The List<Message> Messages property contains either [Serializable] public class Message { [JsonProperty(PropertyName = "t")] public string Text { get; set; }

问题 I want to parse a JSON file (size ~300Mb). I use Jackson library and ObjectMapper . Is it normal if i get memory problems? The first time, i use BufferedReader , it crash application. Next, i use this library. How many time to parse and save into SQLite database, it's very long? 回答1: Jackson You can mix Streaming API with regular ObjectMapper . Using these we can implement nice Iterator class. Using URL we can build stream and pass to our implementation. Example code could look like below: