c# XML模式验证

本文关键字：验证 模式 XML | 更新日期: 2023-09-27 18:06:42

我有一个很好的XML文件，像这样:

    <?xml version="1.0" encoding="utf-8" ?>
    <Assets Path="C:'Users'r3plica'Google Drive">
        <Assetd>
            <FileName>Boomerang - Error codes.xlsx</FileName>
            <DisplayName>Boomerang - Error codes</DisplayName>
            <Description>This is the Boomerang error codes file</Description>
            <Tags>
                <Tag>Excel</Tag>
                <Tag>Boomerang</Tag>
            </Tags>
            <Categories>
                <Category>1</Category>
                <Category>4</Category>
            </Categories>
        </Assetd>
        <Asset>
            <FileName>Issue Tracker v5.xlsx</FileName>
            <Description>This is the issue tracker for Skipstone</Description>
            <Tags>
                <Tag>Excel</Tag>
                <Tag>Skipstone</Tag>
            </Tags>
            <Categories>
                <Category>1</Category>
                <Category>4</Category>
            </Categories>
        </Asset>
    </Assets>

然后是我创建的模式，像这样:

    <?xml version="1.0" encoding="utf-8"?>
    <xs:schema id="data"
        targetNamespace="http://tempuri.org/data.xsd"
        elementFormDefault="qualified"
        xmlns="http://tempuri.org/data.xsd"
        xmlns:mstns="http://tempuri.org/data.xsd"
        xmlns:xs="http://www.w3.org/2001/XMLSchema"
    >
      <xs:element name="Assets">
        <xs:complexType>
          <xs:sequence>
            <xs:element name="Asset" type="Asset" minOccurs="1" />
          </xs:sequence>
        </xs:complexType>
      </xs:element>
      <xs:complexType name="Asset">
        <xs:sequence>
          <xs:element name="FileName" type="xs:string" minOccurs="1" maxOccurs="1" />
          <xs:element name="DisplayName" type="xs:string" minOccurs="0" maxOccurs="1" />
          <xs:element name="Description" type="xs:string" minOccurs="0" maxOccurs="1" />
          <xs:element name="Tags" type="Tags" minOccurs="0" maxOccurs="1" />
          <xs:element name="Categories" type="Categories" minOccurs="1" maxOccurs="1" />
        </xs:sequence>
      </xs:complexType>
      <xs:complexType name="Tags">
        <xs:sequence>
          <xs:element name="Tag" type="xs:string" minOccurs="1" maxOccurs="unbounded" />
        </xs:sequence>
      </xs:complexType>
      <xs:complexType name="Categories">
        <xs:sequence>
          <xs:element name="Category" type="xs:int" minOccurs="1" maxOccurs="unbounded" />
        </xs:sequence>
      </xs:complexType>
    </xs:schema>

就我所能看到的来看，xml文件是无效的，因为第一个元素是Asset而不是Asset，但是如果我运行我的c#代码:

XmlSchemaSet schemas = new XmlSchemaSet();
schemas.Add("http://tempuri.org/data.xsd", "data.xsd");
XDocument doc = XDocument.Load(openFileDialog1.FileName);
string msg = "";
doc.Validate(schemas, (o, err) =>
{
    msg = err.Message;
});
Console.WriteLine(msg == "" ? "Document is valid" : "Document invalid: " + msg);

它告诉我XML是有效的…如果我使用以下代码:

// Set the validation settings.
XmlReaderSettings settings = new XmlReaderSettings();
settings.ValidationType = ValidationType.Schema;
settings.Schemas.Add("http://tempuri.org/data.xsd", "data.xsd");
settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessInlineSchema;
settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessSchemaLocation;
settings.ValidationFlags |= XmlSchemaValidationFlags.ReportValidationWarnings;
settings.ValidationEventHandler += new ValidationEventHandler(ValidationCallBack);
// Create the XmlReader object.
XmlReader reader = XmlReader.Create(openFileDialog1.FileName, settings);
// Parse the file. 
while (reader.Read()) ;

我在控制台中得到这样的输出:

Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Assets'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the attribute 'Path'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Assetd'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'FileName'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'DisplayName'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Description'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Tags'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Tag'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Tag'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Categories'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Category'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Category'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Asset'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'FileName'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Description'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Tags'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Tag'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Tag'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Categories'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Category'.
Warning: Matching schema not found.  No validation occurred. Could not find schema information for the element 'Category'.
谁能告诉我我做错了什么?它要了我的命

欢呼,/r3plica

c# XML模式验证

您需要在xml中设置默认名称空间，如下所示:

<?xml version="1.0" encoding="utf-8"  ?>
    <Assets xmlns="http://tempuri.org/data.xsd">
        <Asset>
            <FileName>Boomerang - Error codes.xlsx</FileName>
            <DisplayName>Boomerang - Error codes</DisplayName>
            <Description>This is the Boomerang error codes file</Description>
            <Tags>
                <Tag>Excel</Tag>
                <Tag>Boomerang</Tag>
            </Tags>
            <Categories>
                <Category>1</Category>
                <Category>4</Category>
            </Categories>
        </Asset>
        <Asset>
            <FileName>Issue Tracker v5.xlsx</FileName>
            <Description>This is the issue tracker for Skipstone</Description>
            <Tags>
                <Tag>Excel</Tag>
                <Tag>Skipstone</Tag>
            </Tags>
            <Categories>
                <Category>1</Category>
                <Category>4</Category>
            </Categories>
        </Asset>
    </Assets>

还有其他一些问题:

路径属性没有在模式中定义，' asset '元素没有定义。maxOccurs="unbounded"需要在schema中为xs设置:element name="Asset"

如果不能修改xml，则需要从xsd中删除目标模式:

<xs:schema id="data"
    xmlns:mstns="http://tempuri.org/data.xsd"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
>

并像这样注册schema:

settings.Schemas.Add(null, "data.xsd");
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