Question

我的情况我不太明白。阅读以下XML时：

<?xml version="1.0" encoding="utf-8" ?>
<Root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <Countries>
      <Country>
        <CountryCode>CN</CountryCode>
        <CurrentStatus>Active</CurrentStatus>
      </Country>
    </Countries>

    <Countries>
      <Country>
        <CountryCode>AU</CountryCode>
        <CurrentStatus>Cancelled</CurrentStatus>
      </Country>
      <Country>
        <CountryCode>CN</CountryCode>
        <CurrentStatus>Cancelled</CurrentStatus>
      </Country>
      <Country>
        <CountryCode>US</CountryCode>
        <CurrentStatus>Active</CurrentStatus>
      </Country>
    </Countries>

    <Countries xsi:nil="true" />
</Root>

使用以下代码：

//No whitespace
string xml = File.ReadAllText(fileInfo.FullName);
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xml);
string json1 = JsonConvert.SerializeXmlNode(xmlDoc);

//With whitespace
XmlDocument doc = new XmlDocument();
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;

using (XmlReader reader = XmlReader.Create(fileInfo.FullName, settings))
{
    while (reader.Read())
    {
        if (reader.NodeType == XmlNodeType.Element)
        {
            XmlNode node = doc.ReadNode(reader);
            string json2 = JsonConvert.SerializeXmlNode(node);
        }
    }
}

我得到json，如下所示：

json1：

{＆＃34; XML＆＃34;：{＆＃34; @版本＆＃34;：＆＃34; 1.0＆＃34;＆＃34; @编码＆＃34;：＆＃34; UTF -8＆＃34;}＆＃34;根＆＃34; {＆＃34; @xmlns：的xsi＆＃34;：＆＃34; http://www.w3.org/2001/XMLSchema-instance＆＃34;＆＃34;国家和＃34 ;：[{＆＃34;国家＆＃34; {＆＃34; COUNTRYCODE＆＃34;：＆＃34; CN＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;主动＆＃34;} }，{＆＃34;国家＆＃34;：[{＆＃34; COUNTRYCODE＆＃34;：＆＃34; AU＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;取消＆＃34;} ，{＆＃34; COUNTRYCODE＆＃34;：＆＃34; CN＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;取消＆＃34;}，{＆＃34; COUNTRYCODE＆＃34;：＆＃34; JP＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;取消＆＃34;}，{＆＃34; COUNTRYCODE＆＃34;：＆＃34; SG＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;取消＆＃34;}，{＆＃34; COUNTRYCODE＆＃34;：＆＃34; US＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;主动＆＃34 ;}]}，{＆＃34; @xsi：无＆＃34;：＆＃34;真＆＃34;}]}}

json2：

{＆＃34;根＆＃34; {＆＃34; @xmlns：的xsi＆＃34;：＆＃34; http://www.w3.org/2001/XMLSchema-instance＆＃34;＆＃34;＃空白＆＃34 ;: [＆＃34; \ n   ＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n＆＃34;]，＆＃34;国家＆＃34;：[{＆＃34; #whitespace＆＃34;：[＆＃34; \ n＆＃34;，＆＃34; \ n   ＆＃34;]，＆＃34;国家＆＃34;：{＆＃34; #whitespace＆＃34;：[＆＃34; \ n＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n
  ＆＃34]，＆＃34; COUNTRYCODE＆＃34;：＆＃34; CN＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;主动＆＃34;}}，{＆＃34;＃空白＆＃34;：[＆＃34; \ n
  ＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n   ＆＃34;]，＆＃34;国家＆＃34;：[{＆＃34; #whitespace＆＃34;：[＆＃34; \ n＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n
  ＆＃34]，＆＃34; COUNTRYCODE＆＃34;：＆＃34; AU＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;取消＆＃34;}，{＆＃34;＃空白＆＃34;：[＆＃34; \ n   ＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n
  ＆＃34]，＆＃34; COUNTRYCODE＆＃34;：＆＃34; CN＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;取消＆＃34;}，{＆＃34;＃空白＆＃34;：[＆＃34; \ n   ＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n
  ＆＃34]，＆＃34; COUNTRYCODE＆＃34;：＆＃34; JP＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;取消＆＃34;}，{＆＃34;＃空白＆＃34;：[＆＃34; \ n   ＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n
  ＆＃34]，＆＃34; COUNTRYCODE＆＃34;：＆＃34; SG＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;取消＆＃34;}，{＆＃34;＃空白＆＃34;：[＆＃34; \ n   ＆＃34;，＆＃34; \ n＆＃34;，＆＃34; \ n
  ＆＃34]，＆＃34; COUNTRYCODE＆＃34;：＆＃34; US＆＃34;＆＃34; CurrentStatus＆＃34;：＆＃34;主动＆＃34;}]}，{＆＃34; @xsi：无＆＃34;：＆＃34;真＆＃34;}]}}

为什么XmlReader会生成空格但XmlDocument却没有？考虑到XML值，我认为他们不应该在那里。

Answer 1

解决它：

settings.IgnoreWhitespace = true;

感谢@HenkHolterman和@finrod。

Answer 2

 XmlDocument doc = new XmlDocument();
        doc.PreserveWhitespace = false;
        XmlReaderSettings settings = new XmlReaderSettings();
        settings.ConformanceLevel = ConformanceLevel.Document;
        settings.IgnoreWhitespace = true;
        XmlReader reader = XmlReader.Create("XMLFile1.xml", settings);
        {

            while (reader.Read())
            {
                if (reader.NodeType == XmlNodeType.Element )
                {
                    XmlNode node = doc.ReadNode(reader);
                    string json2 = JsonConvert.SerializeXmlNode(node);
                    Console.WriteLine(json2.Trim());
                }
            }
        }

C＃使用XmlReader获取额外的空格值，但不能使用XmlDocument获取额外的空格值

2 个答案: