C# 如何反序列化类的特定项子集
我有这个类来反序列化我的类:C# 如何反序列化类的特定项子集,c#,xml,serialization,C#,Xml,Serialization,我有这个类来反序列化我的类: public class Serializer <T> { public T SerializeAppPath(string xmlpath) { T apppath; using (TextReader txtReader = new StreamReader(xmlpath)) { XmlSerializer xmlSerializer = new XmlSeri
public class Serializer <T> {
public T SerializeAppPath(string xmlpath) {
T apppath;
using (TextReader txtReader = new StreamReader(xmlpath)) {
XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
apppath = (T)xmlSerializer.Deserialize(txtReader);
return apppath;
}
}
}
一些XML示例:
<?xml version="1.0" encoding="utf-8"?>
<KPIPATHS>
<KPIS>
<KPI>
<Name>AXD</Name>
<RequestTemplateFullPath>D:\something</RequestTemplateFullPath>
<RequestFullPath>D:\something</RequestFullPath>
<ResultFullPath>D:\something</ResultFullPath>
</KPI>
<KPI>
<Name>DRE</Name>
<RequestTemplateFullPath>D:\something</RequestTemplateFullPath>
<RequestFullPath>D:\something</RequestFullPath>
<ResultFullPath>D:\something</ResultFullPath>
</KPI>
</KPIS>
AXD
D:\什么
D:\什么
D:\什么
直肠指诊
D:\什么
D:\什么
D:\什么
使用XmlSerializer
将始终对给定类型上的所有内容进行反序列化/序列化。您正在尝试有条件地查询另一个函数的XML文档。XmlSerialization不应用作XML查询,而应获取给定类型的全部内容并将其完全序列化为XML,或从XML反序列化给定类型的新实例。此外,在给定的序列化链中只能定义一个XmlRoot属性
从MSDN:
有两个属性可以应用于类(并且只有
类):XmlRootAttribute和XmlTypeAttribute。这些属性是
非常相似。XmlRootAttribute只能应用于一个类:
序列化时表示XML文档的开头的类
和结束元素,换句话说,根元素。这个
另一方面,XmlTypeAttribute可以应用于任何类,
包括根类
有关更多信息,请参见此处:
简言之,您希望在序列化过程中使用另一个节点作为XML根,这是不受支持的
在您的情况下,我会在
KpiPath
类中添加一个函数,以便在类型实例中的数据完全反序列化后(因为函数和方法不可序列化)查询该数据,如下所示:
void Main() {
XmlSerializer ser = new XmlSerializer(typeof(KpiPath));
KpiPath newPath = new KpiPath();
newPath.Kpis.Add(new KPI() {Name = "test", RequestTemplateFullPath = @"C:\test", RequestFullPath = @"C:\test"});
newPath.Kpis.Add(new KPI() {Name = "test", RequestTemplateFullPath = @"C:\newTest", RequestFullPath = @"C:\newTest"});
newPath.Kpis.Add(new KPI() {Name = "anotherTest", RequestTemplateFullPath = @"C:\funTest", RequestFullPath = @"C:\funTest"});
StringBuilder sb = new StringBuilder();
using(StringWriter writer = new StringWriter(sb)) {
ser.Serialize(writer, newPath);
} // end using
Debug.WriteLine(sb.ToString());
List<KPI> matches = newPath.KPIFromName("test");
//For debugging, make sure we get two results (matching the two named test above), print a failure message if not.
Debug.Assert(matches.Count == 2, "Invalid Count");
}
[XmlRoot("KPIPATHS"), Serializable()]
public sealed class KpiPath {
[XmlArray("KPIS")]
public List<KPI> Kpis { get; set; }
public KpiPath() {
Kpis = new List<KPI>();
} // end default constructor
public List<KPI> KPIFromName(string kpiName) {
if(String.IsNullOrWhiteSpace(kpiName)) {
throw new ArgumentNullException("kpiName", "No name provided.");
} // end if
List<KPI> matches = new List<KPI>();
if(this.Kpis.Any()) {
for(int i = 0; i < this.Kpis.Count; i++) {
if(this.Kpis[i].Name.ToUpperInvariant() == kpiName.ToUpperInvariant()) {
matches.Add(this.Kpis[i]);
} // end if
} // end for loop
} // end if
return matches;
} // end function GetFromName
} // end class KpiPath
[Serializable()]
public sealed class KPI {
[XmlElement("Name")]
public string Name { get; set; }
[XmlElement("RequestTemplateFullPath")]
public string RequestTemplateFullPath { get; set; }
[XmlElement("RequestFullPath")]
public string RequestFullPath { get; set; }
public KPI() {
} // end default constructor
} // end class KPI
void Main(){
XmlSerializer ser=新的XmlSerializer(typeof(KpiPath));
KpiPath newPath=新KpiPath();
添加(新KPI(){Name=“test”,RequestTemplateFullPath=@“C:\test”,RequestFullPath=@“C:\test”});
添加(新KPI(){Name=“test”,RequestTemplateFullPath=@“C:\newTest”,RequestFullPath=@“C:\newTest”});
添加(新的KPI(){Name=“anotherTest”,RequestTemplateFullPath=@“C:\funTest”,RequestFullPath=@“C:\funTest”});
StringBuilder sb=新的StringBuilder();
使用(StringWriter=新StringWriter(sb)){
serial.Serialize(writer,newPath);
}//结束使用
Debug.WriteLine(sb.ToString());
列表匹配项=newPath.KPIFromName(“测试”);
//对于调试,请确保得到两个结果(匹配上面两个命名的测试),如果没有,请打印一条失败消息。
Assert(matches.Count==2,“无效计数”);
}
[XmlRoot(“KPIPATHS”),可序列化()
公共密封类KpiPath{
[XmlArray(“KPI”)]
公共列表KPI{get;set;}
公共KpiPath(){
KPI=新列表();
}//结束默认构造函数
公共列表KPIFromName(字符串kpiName){
if(String.IsNullOrWhiteSpace(kpiName)){
抛出新的ArgumentNullException(“kpiName”,“未提供名称”);
}//如果结束,则结束
列表匹配项=新列表();
if(this.Kpis.Any()){
对于(int i=0;i
这样,您就有了一种简单的方法来检索具有您感兴趣的名称的项,并且不必有任何复杂/难以遵循的反序列化逻辑
如果这不是一个好的解决方案,我建议您使用XmlReader
/XmlDocument
组合,根据XPath()语法从文档中读取特定项
以下是解决此问题的一些相关主题:
- 您可以包含一些示例XML吗?您可以手动解析
(错误),也可以反序列化所有内容(整个XML
),然后执行条件筛选。不,我不想使用XML阅读器或类似的东西。序列化方式就是我选择的方式。您好xDaevax,我将您的方法放在KpiPath类中,并尝试从其他类调用它,如下所示:List ff=KpiPath.KPIFromName(kpiname.ToString());但是它不起作用,因为找不到类型或命名空间KPI?@Bob这可能是因为您在KPIPATHS
类中声明了KpiPath
类(您不必这样做,并且可能不需要,因为您已将该类声明为public)。尝试将KPI
类移到KPI
类之外。我不能,因为这样我的反序列化程序将停止工作then@Bob,KPI类不需要嵌套在KpiPath类中,就可以工作,它可以在代码中的任何位置,只要您在KpiPath中具有KPI属性并且KPI类是公共的。所以您建议拆分这些类,我的意思是将KPI类带到其他文件,然后使用代码?KpiPath
<?xml version="1.0" encoding="utf-8"?> <KPIPATHS> <KPIS> <KPI> <Name>AXD</Name> <RequestTemplateFullPath>D:\something</RequestTemplateFullPath> <RequestFullPath>D:\something</RequestFullPath> <ResultFullPath>D:\something</ResultFullPath> </KPI> <KPI> <Name>DRE</Name> <RequestTemplateFullPath>D:\something</RequestTemplateFullPath> <RequestFullPath>D:\something</RequestFullPath> <ResultFullPath>D:\something</ResultFullPath> </KPI> </KPIS>
void Main() { XmlSerializer ser = new XmlSerializer(typeof(KpiPath)); KpiPath newPath = new KpiPath(); newPath.Kpis.Add(new KPI() {Name = "test", RequestTemplateFullPath = @"C:\test", RequestFullPath = @"C:\test"}); newPath.Kpis.Add(new KPI() {Name = "test", RequestTemplateFullPath = @"C:\newTest", RequestFullPath = @"C:\newTest"}); newPath.Kpis.Add(new KPI() {Name = "anotherTest", RequestTemplateFullPath = @"C:\funTest", RequestFullPath = @"C:\funTest"}); StringBuilder sb = new StringBuilder(); using(StringWriter writer = new StringWriter(sb)) { ser.Serialize(writer, newPath); } // end using Debug.WriteLine(sb.ToString()); List<KPI> matches = newPath.KPIFromName("test"); //For debugging, make sure we get two results (matching the two named test above), print a failure message if not. Debug.Assert(matches.Count == 2, "Invalid Count"); } [XmlRoot("KPIPATHS"), Serializable()] public sealed class KpiPath { [XmlArray("KPIS")] public List<KPI> Kpis { get; set; } public KpiPath() { Kpis = new List<KPI>(); } // end default constructor public List<KPI> KPIFromName(string kpiName) { if(String.IsNullOrWhiteSpace(kpiName)) { throw new ArgumentNullException("kpiName", "No name provided."); } // end if List<KPI> matches = new List<KPI>(); if(this.Kpis.Any()) { for(int i = 0; i < this.Kpis.Count; i++) { if(this.Kpis[i].Name.ToUpperInvariant() == kpiName.ToUpperInvariant()) { matches.Add(this.Kpis[i]); } // end if } // end for loop } // end if return matches; } // end function GetFromName } // end class KpiPath [Serializable()] public sealed class KPI { [XmlElement("Name")] public string Name { get; set; } [XmlElement("RequestTemplateFullPath")] public string RequestTemplateFullPath { get; set; } [XmlElement("RequestFullPath")] public string RequestFullPath { get; set; } public KPI() { } // end default constructor } // end class KPI