deserialization

问题 public class TestJacksonColor { public static void main(String [] args) throws IOException { ObjectMapper objectMapper = new ObjectMapper(); Color black = new Color(0, 0, 0); String json = objectMapper.writeValueAsString(black); Color backToObject = objectMapper.readValue(json, Color.class); } } The code attempts to take an java.awt.color class serialize it using jackson objectmapper. Take the resulting json string and deserialize it back to an java.awt.color class. However when doing the

问题 public class TestJacksonColor { public static void main(String [] args) throws IOException { ObjectMapper objectMapper = new ObjectMapper(); Color black = new Color(0, 0, 0); String json = objectMapper.writeValueAsString(black); Color backToObject = objectMapper.readValue(json, Color.class); } } The code attempts to take an java.awt.color class serialize it using jackson objectmapper. Take the resulting json string and deserialize it back to an java.awt.color class. However when doing the

问题 I have the following declaration in my object: @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSX") private ZonedDateTime start; And when I parse timestamps like 2016-12-08T12:16:07.124Z (using Jackson Json De-serilaizer) it works fine, but once I receive timestamps without milliseconds (such as "2016-12-08T12:16:07Z"), it throws exception. How I can possibly make milliseconds optional in format specification? 回答1: If you are using Java 8 Try specifying .SSS

问题 I have a bit of an issue trying to deserialize some XML into a class that I have created. The error I get is: There is an error in XML document (1, 2). at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events) at System.Xml.Serialization.XmlSerializer.Deserialize(TextReader textReader) at CommonLayer.InvuManager.FindDocuments(String policy, String year) in C:\GIT\novus\CommonLayer\InvuManager.vb:line 194 at Novus

问题 I have a bit of an issue trying to deserialize some XML into a class that I have created. The error I get is: There is an error in XML document (1, 2). at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events) at System.Xml.Serialization.XmlSerializer.Deserialize(TextReader textReader) at CommonLayer.InvuManager.FindDocuments(String policy, String year) in C:\GIT\novus\CommonLayer\InvuManager.vb:line 194 at Novus

问题 I'm creating a C# application (Client & Server). They're seperate projects and both reference a DLL that can serialize and deserialize any object that is inputed into them. Everything is working fine, until I start working with live desktop monitoring (Video-ish). The DLL contains a custom "Screenshot" class that takes in a bitmap & writes it to the public memorystream for that class. Here is how it is all done: Client button takes screenshot of whole screen (as a bitmap) Client constructs a

问题 I would like to serialize/deserialize objects that have readonly private fields with public getter-only properties, whose readonly fields are set in the objects' constructor. However, the following code fails in unit testing: using System.ComponentModel; using FluentAssertions; using Xunit; using YamlDotNet.Serialization; namespace Utilities.ComputerInventory { public class CPU { readonly CPUMaker cPUMaker; public CPU() : this(CPUMaker.Generic) { } public CPU(CPUMaker cPUMaker) { this

问题 I am trying to deserialize a complex bean using jackson and Lombok builder. I have solved already many errors related to serialization of other custom types but I am stuck with deserializing a Level object. The serialization works somehow but not the deserialization as shown below. Since the Level class is protected, I cannot for instance create an auxiliary variable to serialize the Level object attributes in a different way (e.g. an array of strings) and then call the constructor of Level

问题 I'm trying to deserialize some data with Gson (Java) and the API I'm pulling data from sometimes has data of the wrong type in a field. I.e. if I'm expecting an array of String types, it might encounter a Boolean . Now I realize these are my current options: Always ignore the field from deserialization Create a custom TypeAdapter to do the deserialization and the catch the error and do something (like set the field to null ) However I'm asking if there's another way to easily make it so if

问题 When I run the following Python program from pyspark.ml.classification import LinearSVC from pyspark.sql import SparkSession spark = SparkSession.builder.appName("Sparkmodel").getOrCreate() data = spark.read.format("libsvm").load("/usr/local/spark/data/mllib/sample_libsvm_data.txt") model = LinearSVC().fit(data) model.save("mymodel") LinearSVC.load("mymodel") the load fails with a "java.lang.NoSuchMethodException". /anaconda3/envs/scratch/bin/python /Users/billmcn/src/toy/sparkmodel