Question

Web请求发送到url，然后响应返回如下：

- <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
 - <soap:Body>
  - <ns2:operationResponse xmlns:ns2="">
    <return>
    <response> 
    <header> 
      <uname></uname> 
      <pass></pass> 
      <sp></sp> 
      <ss></ss> 
      <trx></trx> 
     <headerdtl></headerdtl> 
   </header> 
     <respcd>8913|9|8915|1;Record already existed!!|</respcd> 
     <rcdcnt>0</rcdcnt> 
     </response>
     </return> 
    </ns2:operationResponse>
  </soap:Body>
</soap:Envelope>

我想要的是阅读|number|

中的<respcd>8913|number|8915|1;Record already existed!!|</respcd>

此值不保持不变，返回0或9.如何使用c＃

读取该值

Update

我有这段代码：

   int index = xmlString.IndexOf("<response>");
        xmlString = xmlString.Substring(index, xmlString.Length - index);
        index = xmlString.IndexOf("</return>");
        xmlString = xmlString.Substring(0, index);

但错误说：StartIndex cannot be less than zero 在这一行xmlString = xmlString.Substring(index, xmlString.Length - index);

我知道索引现在是-1，但它是..任何想法的实际索引？

Answer 1

一种方法是加载XML，从节点获取文本，并解析出您想要的值。但是，如果您想要的值足够独特，您可以从一开始就使用RegEx并忘记加载XML。以下是两种方法：

加载XML

string soapmessage = @"
    <soap:Envelope xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'>
        <soap:Body>
            <ns2:operationResponse xmlns:ns2='http://someurl.com'>
                <return>
                    <response> 
                        <header> 
                            <uname></uname> 
                            <pass></pass> 
                            <sp></sp> 
                            <ss></ss> 
                            <trx></trx> 
                            <headerdtl></headerdtl> 
                        </header> 
                        <respcd>8913|9|8915|1;Record already existed!!|</respcd> 
                        <rcdcnt>0</rcdcnt> 
                    </response>
                </return> 
            </ns2:operationResponse>
        </soap:Body>
    </soap:Envelope>
";

XmlDocument document = new XmlDocument();
document.LoadXml(soapmessage);
XmlNodeList xnList = document.SelectNodes("//respcd");
XmlNode node = xnList.Cast<XmlNode>().FirstOrDefault();

string value = Regex.Match(node.InnerText, "(?<=|)[09](?=|)").Value;
Console.WriteLine(value); //<== writes out 9.

仅使用RegEx

string value2 = Regex.Match(soapmessage, "(?<=|)[09](?=|)").Value;
Console.WriteLine(value2); //<== writes out 9.

注意我将xmlns:ns2=""部分更改为xmlns:ns2="http://someurl.com"，因为加载XML方法因为没有正确定义名称空间而引发错误。

Answer 2

试试这个

 XmlNode nListAuthor = doc.SelectNodes("//respcd")[0];
        string Output = string.Empty;
        if (nListAuthor != null) 
        {
            if (Regex.IsMatch(nListAuthor.InnerText, @"^(?:[0-9]+\|([0-9])\|[0-9]+\|(.*)\|)$", RegexOptions.IgnoreCase)) 
            {
                Output = Regex.Match(nListAuthor.InnerText, @"^(?:[0-9]+\|([0-9])\|[0-9]+\|(.*)\|)$", RegexOptions.IgnoreCase).Groups[1].Value;
            } 
        }

从SOAP XML读取数据

2 个答案: