我有几种格式的xmls:
<InterConnectResponse>
<SchemaVersion>2.0</SchemaVersion>
<ConsumerSubjects>
<ConsumerSubject subjectIdentifier="Primary">
<DataSourceResponses>
<RiskViewProducts>
<RiskViewAttribResponse>
<Attributes>
<Attribute>
<Name>CurrAddrTaxValue</Name>
<Value>3</Value>
</Attribute>
<Attribute>
<Name>CurrAddrTaxMarketValue</Name>
<Value>2</Value>
</Attribute>
<Attribute>
<Name>CurrAddrBlockIndex</Name>
<Value>0.61</Value>
</Attribute>
------ Many More Attributes ---------
</Attributes>
</RiskViewAttribResponse>
</RiskViewProducts>
</DataSourceResponses>
</ConsumerSubject>
</ConsumerSubjects>
</InterConnectResponse>
我想只解析上面xml中的特定属性。所以我用下面的logi。但是如何将值的结果(仅值而不是名称)保存为csv文件?
var document = XDocument.Parse(str3); // or `= XDocument.Parse(xml);`
var attributesToRead = new[] { "CurrAddrTaxValue", "CurrAddrTaxMarketValue", "PrevAddrTaxValue", "PrevAddrAVMValue", "AddrChangeCount60", "DerogSeverityIndex", "LienFiledCount03", "LienSmallClaimsFiledTotal", "EvictionCount12", "NonDerogCount", "NonDerogCount12", "InquiryPersonalFinanceRecent", "HighRiskCreditActivity", "SubPrimeOfferRequestCount", "SubPrimeOfferRequestCount60" };
var productsElements = document.XPathSelectElements("InterConnectResponse/ConsumerSubjects/ConsumerSubject/DataSourceResponses/RiskViewProducts");
var products = productsElements.Select(product => new
{
Attributes = product.XPathSelectElements("RiskViewAttribResponse/Result/Attributes/Attribute").Select(attribute => new
{
Name = attribute.XPathSelectElement("Name").Value,
Value = attribute.XPathSelectElement("Value").Value
}).Where(attribute => attributesToRead.Contains(attribute.Name))
});
但是如何将结果写入csv,当我解析下一个xml时它会附加? Aso我只想将值写入csv而不是属性的名称..
所以我的预期输出是:
3, 2, 0.61, ............
答案 0 :(得分:0)
您的products
变量是匿名类型的IEnumerable
,其中包含名为Attributes
的属性。 Attributes
属性和IEnumerable
匿名类型再次包含2个属性:Name
和Value
。
您希望将所有Value
属性的内容写入(准确地说是附加到)文件中,然后执行以下操作:
var values = products.SelectMany(x => x.Attributes).Select(x => x.Value);
File.AppendAllText("someFileName.csv", string.Join(",", values));
当然,我假设您的代码在此之前有效,并且您只是难以附加到csv文件。
答案 1 :(得分:0)
您是否考虑过使用库。使用Cinchoo ETL - 一个开源ETL库,您可以用几行代码生成预期的输出。它是基于流的,可以解析任何大小的xml。
using (var parser = new ChoXmlReader("sample.xml").WithXPath("Attributes/Attribute")
.WithField("Name", xPath: "Name")
.WithField("Value", xPath: "value")
)
{
using (var writer = new ChoCSVWriter("sample.csv"))
writer.Write(parser.Select(kvp => kvp.Value).ToExpandoObject());
}
输出结果为:
3,2,0.61
披露:我是这个图书馆的作者。