解析第三方XML

Question

解析一个没有模式的大XML文件（2MB-20MB或更多）将采取什么样的路径（由于文件结构很奇怪，我不能推断出一个使用XSD.exe，检查下面的代码段）？

选项

1）XML反序列化（但正如所说，我没有一个模式和XSD工具抱怨文件内容）， 2）的LINQ to XML， 3）加载到XmlDocument的， 4）用XmlReader手动解析&东西。

这是XML文件片段：

<?xml version="1.0" encoding="utf-8"?> 
<xmlData date="29.04.2010 12:09:13"> 
<Table> 
    <ident>079186</ident> 
    <stock>0</stock> 
    <pricewotax>33.94000000</pricewotax> 
    <discountpercent>0.00000000</discountpercent> 
</Table> 
<Table> 
    <ident>079190</ident> 
    <stock>1</stock> 
    <pricewotax>10.50000000</pricewotax> 
    <discountpercent>0.00000000</discountpercent> 
    <pricebyquantity> 
    <Table> 
    <quantity>5</quantity> 
    <pricewotax>10.00000000</pricewotax> 
    <discountpercent>0.00000000</discountpercent> 
    </Table> 
    <Table> 
    <quantity>8</quantity> 
    <pricewotax>9.00000000</pricewotax> 
    <discountpercent>0.00000000</discountpercent> 
    </Table> 
    </pricebyquantity> 
</Table> 
</xmlData> 

Answer 1

这里的XSD：

<?xml version="1.0" encoding="utf-8"?> 
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"> 
    <xs:element name="xmlData"> 
    <xs:complexType> 
     <xs:sequence> 
     <xs:element maxOccurs="unbounded" name="Table"> 
      <xs:complexType> 
      <xs:sequence> 
       <xs:element name="ident" type="xs:int" /> 
       <xs:element name="stock" type="xs:int" /> 
       <xs:element name="pricewotax" type="xs:double" /> 
       <xs:element name="discountpercent" type="xs:double" /> 
       <xs:element minOccurs="0" name="pricebyquantity"> 
       <xs:complexType> 
        <xs:sequence> 
        <xs:element maxOccurs="unbounded" name="Table"> 
         <xs:complexType> 
         <xs:sequence> 
          <xs:element name="quantity" type="xs:int" /> 
          <xs:element name="pricewotax" type="xs:double" /> 
          <xs:element name="discountpercent" type="xs:double" /> 
         </xs:sequence> 
         </xs:complexType> 
        </xs:element> 
        </xs:sequence> 
       </xs:complexType> 
       </xs:element> 
      </xs:sequence> 
      </xs:complexType> 
     </xs:element> 
     </xs:sequence> 
     <xs:attribute name="date" type="xs:string" use="required" /> 
    </xs:complexType> 
    </xs:element> 
</xs:schema> 

这里的序列化的类：

//------------------------------------------------------------------------------ 
// <auto-generated> 
//  This code was generated by a tool. 
//  Runtime Version:2.0.50727.3603 
// 
//  Changes to this file may cause incorrect behavior and will be lost if 
//  the code is regenerated. 
// </auto-generated> 
//------------------------------------------------------------------------------ 

// 
// This source code was auto-generated by xsd, Version=2.0.50727.1432. 
// 
namespace StockInfo { 
    using System.Xml.Serialization; 


    /// <remarks/> 
    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.1432")] 
    [System.SerializableAttribute()] 
    [System.Diagnostics.DebuggerStepThroughAttribute()] 
    [System.ComponentModel.DesignerCategoryAttribute("code")] 
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true)] 
    [System.Xml.Serialization.XmlRootAttribute(Namespace="", IsNullable=false)] 
    public partial class xmlData { 

     private xmlDataTable[] tableField; 

     private string dateField; 

     /// <remarks/> 
     [System.Xml.Serialization.XmlElementAttribute("Table")] 
     public xmlDataTable[] Table { 
      get { 
       return this.tableField; 
      } 
      set { 
       this.tableField = value; 
      } 
     } 

     /// <remarks/> 
     [System.Xml.Serialization.XmlAttributeAttribute()] 
     public string date { 
      get { 
       return this.dateField; 
      } 
      set { 
       this.dateField = value; 
      } 
     } 
    } 

    /// <remarks/> 
    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.1432")] 
    [System.SerializableAttribute()] 
    [System.Diagnostics.DebuggerStepThroughAttribute()] 
    [System.ComponentModel.DesignerCategoryAttribute("code")] 
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true)] 
    public partial class xmlDataTable { 

     private int identField; 

     private int stockField; 

     private double pricewotaxField; 

     private double discountpercentField; 

     private xmlDataTableTable[] pricebyquantityField; 

     /// <remarks/> 
     public int ident { 
      get { 
       return this.identField; 
      } 
      set { 
       this.identField = value; 
      } 
     } 

     /// <remarks/> 
     public int stock { 
      get { 
       return this.stockField; 
      } 
      set { 
       this.stockField = value; 
      } 
     } 

     /// <remarks/> 
     public double pricewotax { 
      get { 
       return this.pricewotaxField; 
      } 
      set { 
       this.pricewotaxField = value; 
      } 
     } 

     /// <remarks/> 
     public double discountpercent { 
      get { 
       return this.discountpercentField; 
      } 
      set { 
       this.discountpercentField = value; 
      } 
     } 

     /// <remarks/> 
     [System.Xml.Serialization.XmlArrayItemAttribute("Table", IsNullable=false)] 
     public xmlDataTableTable[] pricebyquantity { 
      get { 
       return this.pricebyquantityField; 
      } 
      set { 
       this.pricebyquantityField = value; 
      } 
     } 
    } 

    /// <remarks/> 
    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.1432")] 
    [System.SerializableAttribute()] 
    [System.Diagnostics.DebuggerStepThroughAttribute()] 
    [System.ComponentModel.DesignerCategoryAttribute("code")] 
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true)] 
    public partial class xmlDataTableTable { 

     private int quantityField; 

     private double pricewotaxField; 

     private double discountpercentField; 

     /// <remarks/> 
     public int quantity { 
      get { 
       return this.quantityField; 
      } 
      set { 
       this.quantityField = value; 
      } 
     } 

     /// <remarks/> 
     public double pricewotax { 
      get { 
       return this.pricewotaxField; 
      } 
      set { 
       this.pricewotaxField = value; 
      } 
     } 

     /// <remarks/> 
     public double discountpercent { 
      get { 
       return this.discountpercentField; 
      } 
      set { 
       this.discountpercentField = value; 
      } 
     } 
    } 
} 

警告：反序列化可能不是解析一个20MB的文件最高效的方式。 XmlReader可能是最快的方法，但这意味着要手动完成任务。

Answer 2

我将其加载到XmlDocument，然后使用XPath来进行相应的处理。在这里，LINQ可能是最好的选择，但我不是很熟悉，所以我不能说。