问题解串行化XML到对象 - 有一个在XML文档的错误（0，0） [英] Issue de-serializing XML to Object - There is an error in XML document (0, 0)

问题描述

我想从一个简单的XML文档读取元素值，并绑定到这些物体但是我遇到问题，我的XML文档。我已经验证它，可以确认有与文档但是本身扩大就行了，结果没有问题：

I'm trying to read in element values from a simple XML doc and bind these to an object however I'm running into problems with my XML document. I have validated it and can confirm there are no issues with the document itself however expanding the results on the line:

var nodes = from xDoc in xml.Descendants("RewriteRule")
                select xmlSerializer.Deserialize(xml.CreateReader()) as Url;

显示的有在XML文档的错误（0，0）的

的内部异常读＆LT;规则集的xmlns =''＆GT;是没有预料到。

我不知道我在做什么错在这里？

I'm not sure what I'm doing wrong here?

我的XML是如下：

<?xml version="1.0" encoding="utf-8" ?>
<RewriteRules>
    <RewriteRule>
        <From>fromurl</From>
        <To>tourl</To>
        <Type>301</Type>
    </RewriteRule>
</RewriteRules>

在code加载XML文件，并试图反序列化： -

The code that loads the XML file and attempts to de-serialize it: -

public static UrlCollection GetRewriteXML(string fileName)
{
    XDocument xml = XDocument.Load(HttpContext.Current.Server.MapPath(fileName));
    var xmlSerializer = new XmlSerializer(typeof(Url));

    var nodes = from xDoc in xml.Descendants("RewriteRule")
                select xmlSerializer.Deserialize(xml.CreateReader()) as Url;

    return nodes as UrlCollection;
}

我的网址对象类： -

My Url object class: -

[Serializable]
[XmlRoot("RewriteRule")]
public class Url
{
    [XmlElement("From")]
    public string From { get; set; }
    [XmlElement("To")]
    public string To { get; set; }
    [XmlElement("Type")]
    public string StatusCode { get; set; }

    public Url()
    {
    }

    public Url(Url url)
    {
        url.From = this.From;
        url.To = this.To;
        url.StatusCode = this.StatusCode;
    }
}

有人能看到我在做什么错在这里？

Can anyone see what I'm doing wrong here?

感谢

推荐答案

我不是太熟悉的从选择语句，但似乎你只是传递 XML 这是整个的XDocument ，而不是的XElement 的是你的重写规则。这就是为什么你得到错误信息的规则集是未知的 - 在的XmlSerializer 只需要一个重写规则。

I'm not too familiar with the from select statement, but it seems you just pass in xml which is the whole XDocument, instead of the XElement that is your RewriteRule. That is why you get the error message that RewriteRules is unknown - the XmlSerializer expects a single RewriteRule.

我设法用重写你的code LINQ 来代替（但如果你知道如何从选择获取单个元素从 语句，应该同样有效）。

I managed to rewrite your code using LINQ instead (but if you know how to get the single element from the from select statement, that should work equally well).

这应该给你正确的结果 - RR 是的XElement 从返回的后人：

This should give you the correct result - rr is the XElement that is returned from Descendants:

public static IEnumerable<Url> GetRewriteXML()
{
    XDocument xml = XDocument.Load(HttpContext.Current.Server.MapPath(fileName));

    var xmlSerializer = new XmlSerializer(typeof(Url));

    var nodes = xml.Descendants("RewriteRule")
                .Select(rr => xmlSerializer.Deserialize(rr.CreateReader()) as Url);

    return nodes;
}

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