json-deserialization

问题 I have a DataTable having two columns. ShipmentDate(DateTime) and Count(Int). after I deserialize the string I noticed the type of ShipmentDate becomes string if the first itemarray value is null. Check the below example. both the json string have same data except the first array item. string jsonTable1 = "[{\"ShipmentDate\":null,\"Count\":3},{\"ShipmentDate\":\"2015-05-13T00:00:00\",\"Count\":13},{\"ShipmentDate\":\"2015-05-19T00:00:00\",\"Count\":1},{\"ShipmentDate\":\"2015-05-26T00:00:00\"

问题 I'm a little stumped on this one. Everything I do to check this out says it is a valid Json array, but JsonConvert.Deserialize says it is an object. Can someone point out what I'm doing wrong? Code to replicate: var data = "[{\"User\": {\"Identifier\": \"24233\",\"DisplayName\": \"Commerce Test Student\",\"EmailAddress\": \"email@email.ca\",\"OrgDefinedId\": \"UniqueId1\",\"ProfileBadgeUrl\": null,\"ProfileIdentifier\": \"zzz123\"},\"Role\": {\"Id\": 153,\"Code\": null,\"Name\": \"Commerce

问题 I'm a little stumped on this one. Everything I do to check this out says it is a valid Json array, but JsonConvert.Deserialize says it is an object. Can someone point out what I'm doing wrong? Code to replicate: var data = "[{\"User\": {\"Identifier\": \"24233\",\"DisplayName\": \"Commerce Test Student\",\"EmailAddress\": \"email@email.ca\",\"OrgDefinedId\": \"UniqueId1\",\"ProfileBadgeUrl\": null,\"ProfileIdentifier\": \"zzz123\"},\"Role\": {\"Id\": 153,\"Code\": null,\"Name\": \"Commerce

问题 I have added a BooleanProperty into a DAO class which is to be serialized into JSON and sent across to a server to be saved in a MySQL database. The reason I am using the BooleanProperty is because I want to use data binding for the 'isActive' field in my JavaFX desktop application. The class to be serialized: package com.example.myapplication import lombok.Data; import javafx.beans.property.BooleanProperty; import javafx.beans.property.SimpleBooleanProperty; @Data public class MyDAO {

问题 I have the following JSON data I get from an API: {"datatable": {"data" : [ ["John", "Doe", "1990-01-01", "Chicago"], ["Jane", "Doe", "2000-01-01", "San Diego"] ], "columns": [ { "name": "First", "type": "String" }, { "name": "Last", "type": "String" }, { "name": "Birthday", "type": "Date" }, { "name": "City", "type": "String" } ]} } A later query could result the following: {"datatable": {"data" : [ ["Chicago", "Doe", "John", "1990-01-01"], ["San Diego", "Doe", "Jane", "2000-01-01"] ],

问题 I am trying to deserialise the Color class from JSON with Jackson but it throws exception: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "colorSpace" (class java.awt.Color), not marked as ignorable. What i'm doing wrong? This is my code: File act = new File(new File().getAbsolutePath()); ObjectMapper om = new ObjectMapper(); File f = new File(act, "123.JSON"); om.writeValue(f, new person()); person per = om.readValue(f, person.class); System.out.println

问题 This question already has answers here : JsonConvert.Deserializer indexing issues (4 answers) Closed 4 years ago . Using the NewtonSoft JSO serializer and a stack data structure. The order is reversed when I deserialize the structure. Comparing numbers and ss. Am I doing something wrong here or is there any workaround the issue. using Newtonsoft.Json; using System; using System.Collections.Generic; class Example { public static void Main() { Stack<string> numbers = new Stack<string>();

问题 This question already has answers here : JsonConvert.Deserializer indexing issues (4 answers) Closed 4 years ago . Using the NewtonSoft JSO serializer and a stack data structure. The order is reversed when I deserialize the structure. Comparing numbers and ss. Am I doing something wrong here or is there any workaround the issue. using Newtonsoft.Json; using System; using System.Collections.Generic; class Example { public static void Main() { Stack<string> numbers = new Stack<string>();

问题 So I have a JSON string where I just want to read a specific value. How do I just pick " Read me please! " from string below? var readString = /*Read me please!*/ JSON string: "{\"aString\":\"Read me please!\"}" For better understanding, how do I do the same here? (just " Read me please! "): "{\"Result\": { \"aString\":\"Read me please!\", \"anotherString\":\"Dont read me!\" } }" If both alternative have different solution I would like to know both. PS: I do not wish to save the value into

问题 So I have a JSON string where I just want to read a specific value. How do I just pick " Read me please! " from string below? var readString = /*Read me please!*/ JSON string: "{\"aString\":\"Read me please!\"}" For better understanding, how do I do the same here? (just " Read me please! "): "{\"Result\": { \"aString\":\"Read me please!\", \"anotherString\":\"Dont read me!\" } }" If both alternative have different solution I would like to know both. PS: I do not wish to save the value into