Question

我用C#编写了一个Web服务，我想要他的一个方法来返回XML。我已设法这样做，但所有数据都被标记为CDATA而未被解析。它不是我想要的。

这是我的代码：

 [WebMethod(EnableSession = true, Description = "Returns the safe activities for the required days period in XML")]
    public string GetSafeActivitiesXML(string safename, int days, string FileName)
    {
        string returnErrorCode = "001";
        try
        {
            XmlWriterSettings settings = new XmlWriterSettings
            {
                Indent = true
                //IndentChars = "  ",
                //NewLineChars = "\n",
                //NewLineHandling = NewLineHandling.None,
                //Encoding = System.Text.Encoding.UTF8
            };

            StringWriter sb = new StringWriter();
            XmlWriter writer = XmlWriter.Create(sb,settings);

            writer.WriteStartDocument();
            writer.WriteStartElement("GetSafeActivitiesResult", "");

            int lineCouner = 0;

            if (safeActivities.Count > 0)
            {
                writer.WriteStartElement("ListOfStrings", "");
                foreach (ActivityLogRecord activity in safeActivities)
                {
                        writer.WriteStartElement("string");
                        writer.WriteElementString("outFileName", (activity.Info1.Substring(activity.Info1.LastIndexOf("\\")+1)));
                        writer.WriteElementString("activityTmStamp", activity.Time.ToString());
                        writer.WriteElementString("userName", activity.UserName);
                        writer.WriteElementString("ActionID", activityCode);
                        writer.WriteElementString("direction", direction);
                        writer.WriteElementString("path", activity.Info1);
                        writer.WriteEndElement();
                        lineCouner++;
                    }
                 }
                writer.WriteEndElement();
            }

            writer.WriteStartElement("retunCode");
            writer.WriteString((lineCouner > 0) ? "0" : "2");
            writer.WriteEndElement();
            writer.WriteStartElement("retunMessage");
            writer.WriteString((lineCouner > 0) ? "תקין" : "אין נתונים");
            writer.WriteEndElement();

            writer.WriteEndElement();
            writer.WriteEndDocument();
            writer.Flush();

            XmlDocument xmlOut = new XmlDocument();

            xmlOut.LoadXml(sb.ToString());
            writer.Close();
            //xmlOut.Save(xxx);
            string finalOutput = sb.ToString();
            finalOutput.Replace("![CDATA[", "").Replace("]]", "");
            return sb.ToString();

        }
        catch (Exception ex)
        {
            this.LogWrite("GetSafeActivities", string.Format("Operation has failed: {0}, internal errorcode: {1}", ex.Message,returnErrorCode), Session.SessionID, true);
            return string.Format("<ReturnCode>{0}</ReturnCode><ReturnMSG>{1}</ReturnMSG>", "שגוי", ex.Message) ;             
        }

    }

这是当前输出的示例：

 <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
  <GetSafeActivitiesXMLResponse xmlns="http://www.securenet.co.il">
     <GetSafeActivitiesXMLResult><![CDATA[<?xml version="1.0" encoding="utf-16"?>
  <GetSafeActivitiesResult>
   <ListOfStrings>
<string>
  <outFileName>code-xmp-tmp.txt</outFileName>
  <activityTmStamp>21/06/2015 10:58:38</activityTmStamp>
  <userName>naaman</userName>
  <ActionID>קובץ אוחסן בכספת</ActionID>
  <direction>Unknown</direction>
  <path>Root\fgdf\code-xmp-tmp.txt</path>
</string>
</ListOfStrings>
<retunCode>0</retunCode>
<retunMessage>תקין</retunMessage>
 </GetSafeActivitiesResult>]]></GetSafeActivitiesXMLResult>
   </GetSafeActivitiesXMLResponse>
</soap:Body>

这就是我想要实现的目标：

 <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
  <GetSafeActivitiesXMLResponse xmlns="http://www.securenet.co.il">
     <GetSafeActivitiesXMLResult><?xml version="1.0" encoding="utf-16"?>
  <GetSafeActivitiesResult>
   <ListOfStrings>
<string>
  <outFileName>code-xmp-tmp.txt</outFileName>
  <activityTmStamp>21/06/2015 10:58:38</activityTmStamp>
  <userName>naaman</userName>
  <ActionID>קובץ אוחסן בכספת</ActionID>
  <direction>Unknown</direction>
  <path>Root\fgdf\code-xmp-tmp.txt</path>
</string>
</ListOfStrings>
<retunCode>0</retunCode>
<retunMessage>תקין</retunMessage>
 </GetSafeActivitiesResult></GetSafeActivitiesXMLResult>
   </GetSafeActivitiesXMLResponse>
</soap:Body>

所以我的问题是，如何摆脱CDATA标签，为什么它首先出现在那里。

我是xml的新手，所以请耐心等待。

Answer 1

您要实现的输出XML不是well-formed：您实际上是在尝试嵌套XML文档，并使用XML declaration（即{{1} （），作为XML文档（或片段）中的文字字符数据 - 这不是一个合法的构造。

在另一个XML文档（元素）中包含XML文档或任何可被识别为markup的文本的正确方法是使用CDATA section基本上使其脱离，以便它是不解析为标记。这正是Web服务/ SOAP基础架构为您所做的事情。

如果它没有这样做并且您的XML文本成为您想要的解析数据（<?xml version="1.0" encoding="utf-16"?>），那么消费解析器会抛出异常或返回错误，因为您的Web服务响应XML不会良好的。

Answer 2

该方法返回String类型，这就是问题所在。我将返回类型更改为XmlDocument，现在它的所有蜂蜜和坚果。

xml数据始终创建为CDATA而不是PCDATA

2 个答案: