我如何反序列化这个XML文档:
<?xml version="1.0" encoding="utf-8"?>
<Cars>
<Car>
<StockNumber>1020</StockNumber>
<Make>Nissan</Make>
<Model>Sentra</Model>
</Car>
<Car>
<StockNumber>1010</StockNumber>
<Make>Toyota</Make>
<Model>Corolla</Model>
</Car>
<Car>
<StockNumber>1111</StockNumber>
<Make>Honda</Make>
<Model>Accord</Model>
</Car>
</Cars>
我有这个:
[Serializable()]
public class Car
{
[System.Xml.Serialization.XmlElementAttribute("StockNumber")]
public string StockNumber{ get; set; }
[System.Xml.Serialization.XmlElementAttribute("Make")]
public string Make{ get; set; }
[System.Xml.Serialization.XmlElementAttribute("Model")]
public string Model{ get; set; }
}
.
[System.Xml.Serialization.XmlRootAttribute("Cars", Namespace = "", IsNullable = false)]
public class Cars
{
[XmlArrayItem(typeof(Car))]
public Car[] Car { get; set; }
}
.
public class CarSerializer
{
public Cars Deserialize()
{
Cars[] cars = null;
string path = HttpContext.Current.ApplicationInstance.Server.MapPath("~/App_Data/") + "cars.xml";
XmlSerializer serializer = new XmlSerializer(typeof(Cars[]));
StreamReader reader = new StreamReader(path);
reader.ReadToEnd();
cars = (Cars[])serializer.Deserialize(reader);
reader.Close();
return cars;
}
}
这似乎并不奏效:-(
看看这是否有帮助:
[Serializable()]
[System.Xml.Serialization.XmlRootAttribute("Cars", Namespace = "", IsNullable = false)]
public class Cars
{
[XmlArrayItem(typeof(Car))]
public Car[] Car { get; set; }
}
.
[Serializable()]
public class Car
{
[System.Xml.Serialization.XmlElement()]
public string StockNumber{ get; set; }
[System.Xml.Serialization.XmlElement()]
public string Make{ get; set; }
[System.Xml.Serialization.XmlElement()]
public string Model{ get; set; }
}
如果做不到这一点,请使用visual studio附带的xsd.exe程序来基于该xml文件创建一个模式文档,然后再次使用它来基于该模式文档创建一个类。
这是一个工作版本。我将XmlElementAttribute标签更改为XmlElement,因为在xml中,StockNumber、Make和Model值是元素,而不是属性。我还删除了reader.ReadToEnd();(该函数读取整个流并返回一个字符串,因此Deserialize()函数不能再使用阅读器了…位置在小溪的尽头)。我在命名上也做了一些改动:)。
下面是这些类:
[Serializable()]
public class Car
{
[System.Xml.Serialization.XmlElement("StockNumber")]
public string StockNumber { get; set; }
[System.Xml.Serialization.XmlElement("Make")]
public string Make { get; set; }
[System.Xml.Serialization.XmlElement("Model")]
public string Model { get; set; }
}
[Serializable()]
[System.Xml.Serialization.XmlRoot("CarCollection")]
public class CarCollection
{
[XmlArray("Cars")]
[XmlArrayItem("Car", typeof(Car))]
public Car[] Car { get; set; }
}
反序列化函数:
CarCollection cars = null;
string path = "cars.xml";
XmlSerializer serializer = new XmlSerializer(typeof(CarCollection));
StreamReader reader = new StreamReader(path);
cars = (CarCollection)serializer.Deserialize(reader);
reader.Close();
和稍微调整的xml(我需要添加一个新元素来包装<Cars>…Net对反序列化数组很挑剔):
<?xml version="1.0" encoding="utf-8"?>
<CarCollection>
<Cars>
<Car>
<StockNumber>1020</StockNumber>
<Make>Nissan</Make>
<Model>Sentra</Model>
</Car>
<Car>
<StockNumber>1010</StockNumber>
<Make>Toyota</Make>
<Model>Corolla</Model>
</Car>
<Car>
<StockNumber>1111</StockNumber>
<Make>Honda</Make>
<Model>Accord</Model>
</Car>
</Cars>
</CarCollection>
有两种可能。
方法1。XSD的工具
假设XML文件位于C:\path\to\ XML \file. XML
打开开发人员命令提示符
你可以在开始菜单>程序> Microsoft Visual Studio 2012 > Visual Studio工具中找到它
或者如果你有Windows 8,可以在开始屏幕中输入开发人员命令提示符
输入cd /D "C:\path\to\ XML "
通过输入XSD file.xml从xml文件创建XSD文件
通过输入xsd / C file.xsd创建c#类
就是这样!您已经从C:\path\到\xml\file.cs中的xml文件生成了c#类
方法2 -粘贴特殊
要求Visual Studio 2012+
将XML文件的内容复制到剪贴板
向您的解决方案添加新的空类文件(Shift+Alt+C)
打开该文件,在菜单中单击编辑>粘贴特殊>粘贴XML作为类
就是这样!
使用
这个helper类的用法非常简单:
using System;
using System.IO;
using System.Web.Script.Serialization; // Add reference: System.Web.Extensions
using System.Xml;
using System.Xml.Serialization;
namespace Helpers
{
internal static class ParseHelpers
{
private static JavaScriptSerializer json;
private static JavaScriptSerializer JSON { get { return json ?? (json = new JavaScriptSerializer()); } }
public static Stream ToStream(this string @this)
{
var stream = new MemoryStream();
var writer = new StreamWriter(stream);
writer.Write(@this);
writer.Flush();
stream.Position = 0;
return stream;
}
public static T ParseXML<T>(this string @this) where T : class
{
var reader = XmlReader.Create(@this.Trim().ToStream(), new XmlReaderSettings() { ConformanceLevel = ConformanceLevel.Document });
return new XmlSerializer(typeof(T)).Deserialize(reader) as T;
}
public static T ParseJSON<T>(this string @this) where T : class
{
return JSON.Deserialize<T>(@this.Trim());
}
}
}
你现在要做的就是:
public class JSONRoot
{
public catalog catalog { get; set; }
}
// ...
string xml = File.ReadAllText(@"D:\file.xml");
var catalog1 = xml.ParseXML<catalog>();
string json = File.ReadAllText(@"D:\file.json");
var catalog2 = json.ParseJSON<JSONRoot>();
您只需将Cars汽车属性的一个属性从XmlArrayItem更改为xmlelement。也就是说,从
[System.Xml.Serialization.XmlRootAttribute("Cars", Namespace = "", IsNullable = false)]
public class Cars
{
[XmlArrayItem(typeof(Car))]
public Car[] Car { get; set; }
}
to
[System.Xml.Serialization.XmlRootAttribute("Cars", Namespace = "", IsNullable = false)]
public class Cars
{
[XmlElement("Car")]
public Car[] Car { get; set; }
}
其思想是将所有级别都处理为反序列化
请参阅解决我类似问题的示例解决方案
<?xml version="1.0" ?>
<TRANSACTION_RESPONSE>
<TRANSACTION>
<TRANSACTION_ID>25429</TRANSACTION_ID>
<MERCHANT_ACC_NO>02700701354375000964</MERCHANT_ACC_NO>
<TXN_STATUS>F</TXN_STATUS>
<TXN_SIGNATURE>a16af68d4c3e2280e44bd7c2c23f2af6cb1f0e5a28c266ea741608e72b1a5e4224da5b975909cc43c53b6c0f7f1bbf0820269caa3e350dd1812484edc499b279</TXN_SIGNATURE>
<TXN_SIGNATURE2>B1684258EA112C8B5BA51F73CDA9864D1BB98E04F5A78B67A3E539BEF96CCF4D16CFF6B9E04818B50E855E0783BB075309D112CA596BDC49F9738C4BF3AA1FB4</TXN_SIGNATURE2>
<TRAN_DATE>29-09-2015 07:36:59</TRAN_DATE>
<MERCHANT_TRANID>150929093703RUDZMX4</MERCHANT_TRANID>
<RESPONSE_CODE>9967</RESPONSE_CODE>
<RESPONSE_DESC>Bank rejected transaction!</RESPONSE_DESC>
<CUSTOMER_ID>RUDZMX</CUSTOMER_ID>
<AUTH_ID />
<AUTH_DATE />
<CAPTURE_DATE />
<SALES_DATE />
<VOID_REV_DATE />
<REFUND_DATE />
<REFUND_AMOUNT>0.00</REFUND_AMOUNT>
</TRANSACTION>
</TRANSACTION_RESPONSE>
上面的XML分两层处理
[XmlType("TRANSACTION_RESPONSE")]
public class TransactionResponse
{
[XmlElement("TRANSACTION")]
public BankQueryResponse Response { get; set; }
}
内在层面
public class BankQueryResponse
{
[XmlElement("TRANSACTION_ID")]
public string TransactionId { get; set; }
[XmlElement("MERCHANT_ACC_NO")]
public string MerchantAccNo { get; set; }
[XmlElement("TXN_SIGNATURE")]
public string TxnSignature { get; set; }
[XmlElement("TRAN_DATE")]
public DateTime TranDate { get; set; }
[XmlElement("TXN_STATUS")]
public string TxnStatus { get; set; }
[XmlElement("REFUND_DATE")]
public DateTime RefundDate { get; set; }
[XmlElement("RESPONSE_CODE")]
public string ResponseCode { get; set; }
[XmlElement("RESPONSE_DESC")]
public string ResponseDesc { get; set; }
[XmlAttribute("MERCHANT_TRANID")]
public string MerchantTranId { get; set; }
}
同样地,你需要多个级别的汽车作为数组
检查这个例子的多级反序列化
对于初学者来说
我发现这里的答案非常有用,也就是说我仍然挣扎(只是一点点)让它工作。所以,为了帮助别人,我将详细说明工作解决方案:
来自原始问题的XML。该xml位于Class1.xml文件中,代码中使用该文件的路径来定位该xml文件。
我使用@erymski的答案来让它工作,所以创建了一个名为Car.cs的文件,并添加以下内容:
使用System.Xml.Serialization;/ /添加
公务车
{
公开字符串StockNumber {get;设置;}
Make {get;设置;}
模型{get;设置;}
}
[XmlRootAttribute(“汽车”)]
公共类CarCollection
{
[XmlElement(“汽车”)]
公共汽车[]汽车{得到;设置;}
}
@erymski提供的另一段代码…
使用(TextReader reader =新的StreamReader(路径))
{
XmlSerializer serializer = new XmlSerializer(typeof(CarCollection));
serializer.Deserialize(reader);
}
... 进入你的主程序(program .cs),在静态CarCollection XCar()中,像这样:
using System;
using System.IO;
using System.Xml.Serialization;
namespace ConsoleApp2
{
class Program
{
public static void Main()
{
var c = new CarCollection();
c = XCar();
foreach (var k in c.Cars)
{
Console.WriteLine(k.Make + " " + k.Model + " " + k.StockNumber);
}
c = null;
Console.ReadLine();
}
static CarCollection XCar()
{
using (TextReader reader = new StreamReader(@"C:\Users\SlowLearner\source\repos\ConsoleApp2\ConsoleApp2\Class1.xml"))
{
XmlSerializer serializer = new XmlSerializer(typeof(CarCollection));
return (CarCollection)serializer.Deserialize(reader);
}
}
}
}
希望能有所帮助:-)