json-deserialization

问题 Is it possible to deserialize a json with dynamic key but structured values into Map in flutter dart. I am having a json like { "data" : { "apple":{"qty":5, "price":100}, "orange":{"qty":2, "price":40}, } } And I want this to deserialize in flutter/dart to a model class below class Data { Map<String, Item> itemMap; factory Data.fromJson(Map<String,dynamic> json) { itemMap : json["data"]; //How to parse. } } class Item { int qty; int price; } I have read through a medium blog and even this

问题 Is it possible to deserialize a json with dynamic key but structured values into Map in flutter dart. I am having a json like { "data" : { "apple":{"qty":5, "price":100}, "orange":{"qty":2, "price":40}, } } And I want this to deserialize in flutter/dart to a model class below class Data { Map<String, Item> itemMap; factory Data.fromJson(Map<String,dynamic> json) { itemMap : json["data"]; //How to parse. } } class Item { int qty; int price; } I have read through a medium blog and even this

问题 In the models of a project I am using a JsonConverter attribute to help with the (de)serialization of those models. The converter currently looks like this: public class CustomJsonConverter : Newtonsoft.Json.JsonConverter { bool _canWrite = true; public override bool CanWrite { get { return _canWrite; } } public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) { serializer.PreserveReferencesHandling = PreserveReferencesHandling.Objects; serializer

问题 I have this API public ActionResult AddDocument([FromBody]AddDocumentRequestModel documentRequestModel) { AddDocumentStatus documentState = _documentService.AddDocument(documentRequestModel, DocumentType.OutgoingPosShipment); if (documentState.IsSuccess) return Ok(); return BadRequest(); } And this is my request model public class AddDocumentRequestModel { public AddDocumentRequestModel(int partnerId, List<ProductRequestModel> products) { PartnerId = partnerId; Products = products; } [Range(1

问题 I have this API public ActionResult AddDocument([FromBody]AddDocumentRequestModel documentRequestModel) { AddDocumentStatus documentState = _documentService.AddDocument(documentRequestModel, DocumentType.OutgoingPosShipment); if (documentState.IsSuccess) return Ok(); return BadRequest(); } And this is my request model public class AddDocumentRequestModel { public AddDocumentRequestModel(int partnerId, List<ProductRequestModel> products) { PartnerId = partnerId; Products = products; } [Range(1

问题 This is probably one of those questions where the title says it all. I am quite fascinated by the ObjectMapper's readValue(file, class) method, found within the Jackson library which reads a JSON string from a file and assigns it to an object. I'm curious if this is possible to do by simply getting JSON from a string and applying it to an object. Some sort of alternative readValue() method, which takes a String , instead of a file, and assigns it to an object? For instance, while the default

问题 This is probably one of those questions where the title says it all. I am quite fascinated by the ObjectMapper's readValue(file, class) method, found within the Jackson library which reads a JSON string from a file and assigns it to an object. I'm curious if this is possible to do by simply getting JSON from a string and applying it to an object. Some sort of alternative readValue() method, which takes a String , instead of a file, and assigns it to an object? For instance, while the default

问题 I have two services that should communicate via Kafka . Let's call the first service WriteService and the second service QueryService . On the WriteService side, I have the following configuration for producers. @Configuration public class KafkaProducerConfiguration { @Value("${spring.kafka.bootstrap-servers}") private String bootstrapServers; @Bean public Map<String, Object> producerConfigs() { Map<String, Object> props = new HashMap<>(); // list of host:port pairs used for establishing the

问题 I created a HTTPWebRequest to check if the username and password of the user is correct. If the username and password of the user is correct it will return a JSON Array with the ContactID of the user. I tried to deserialize the JSON but I failed to get the actual data. I want to get the Contact id and send the data to a variable of the next page. The output of the JSON when the username and password is correct: [{"ContactID":"1"}] My code: using Newtonsoft.Json; using System; using System

问题 I created a HTTPWebRequest to check if the username and password of the user is correct. If the username and password of the user is correct it will return a JSON Array with the ContactID of the user. I tried to deserialize the JSON but I failed to get the actual data. I want to get the Contact id and send the data to a variable of the next page. The output of the JSON when the username and password is correct: [{"ContactID":"1"}] My code: using Newtonsoft.Json; using System; using System