Question

我不是XML专家，并且已经有好几年没有编码了。我的任务是将以下XML文件读入C＃程序进行处理。我能够读取大约2个级别-直到 data index =“ 1” counter =“ 0” 行。但是，我无法读取 bit index =“ 1” value =“ false” 行。我的课有什么问题吗？

此外，如何更改类以为索引行添加name属性？

我尝试了把源XML复制到一个空C＃类中并用它创建的类运行它的技巧。但是，那仍然行不通。

这是我要阅读的内容：

                  time  value event
0  2018-01-01 00:00:00      5     A
1  2018-01-01 00:00:00      5     B
2  2018-01-01 00:10:00     15     A
3  2018-01-01 00:10:00     15     B
4  2018-01-01 00:20:00     16     A
5  2018-01-01 00:20:00     16     B
.....
17 2018-01-01 02:50:00      7     F

代码如下：

<?xml version="1.0"?>
-<mibscalar link="http://1.1.1.1/v1/mib/objs/inputPointGroupStatus?type=xml" type="readonly" name="inputPointGroupStatus">
    -<index name="index1">
        -<data index="1">
            -<index name="index2">
                -<data index="1" counter="0">
                    <bit index="1" value="false"/>
                    <bit index="2" value="false"/>
                    <bit index="3" value="false"/>
                    <bit index="4" value="false"/>
                    <bit index="5" value="false"/>
                    <bit index="6" value="false"/>
                    <bit index="7" value="false"/>
                    <bit index="8" value="false"/>
                </data>
                +<data index="2" counter="0">
                +<data index="3" counter="0">
                +<data index="4" counter="0">
                +<data index="5" counter="0">
                +<data index="6" counter="0">
                +<data index="7" counter="0">
                +<data index="8" counter="0">
                +<data index="9" counter="0">
                +<data index="10" counter="0">
                +<data index="11" counter="0">
                +<data index="12" counter="0">
                +<data index="13" counter="0">
                +<data index="14" counter="0">
                +<data index="15" counter="0">
                +<data index="16" counter="0">
            </index>
        </data>
        +<data index="2">
        +<data index="3">
        +<data index="4">
        +<data index="5">
        +<data index="6">
        +<data index="7">
        +<data index="8">
        +<data index="9">
        +<data index="10">
    </index>
</mibscalar>

这是课程：

    public static AtcLoopsStatusMibData ExecuteGetLoopsStatus(string ip, string command)
    {
        AtcLoopsStatusMibData mib;
        string uri = string.Format(API_FORMAT_STR, ip, command);
        string msg = $"Calling {uri}";
        Xlog.LogVerbose(msg);

        try
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
            request.Method = "GET";
            request.Timeout = 15 * 1000;
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            StreamReader reader = new StreamReader(response.GetResponseStream());

            XmlSerializer serializer = new XmlSerializer(typeof(AtcLoopsStatusMibData));
            mib = (AtcLoopsStatusMibData)serializer.Deserialize(reader);
        }
        catch (Exception ex)
        {
            msg = $"Call to {uri} failed: {ex.Message}";
            Xlog.LogError(msg);
            throw;
        }

        return mib;
    }

这是我在调试器中看到的，并创建为输出XML文件：

[XmlRootAttribute("mibscalar")]
public class AtcLoopsStatusMibData
{
    [XmlAttribute("name")]
    public string Name { get; set; }

    [XmlAttribute("link")]
    public string Link { get; set; }

    [XmlArray("index")]
    [XmlArrayItem("data", typeof(Data1MibElement))]
    public List<Data1MibElement> Data1List { get; set; }

    [XmlElement("data")]
    public Data1MibElement Data { get; set; }

    /// <summary>
    /// Default Constructor
    /// </summary>
    public AtcLoopsStatusMibData()
    {
        Data1List = new List<Data1MibElement>();
    }

    /// <summary>
    /// Sets the "Link" property that is required when sending Mib object
    /// to ATC.
    /// </summary>
    /// <param name="ip">IP Address of the ATC</param>
    /// <param name="commandName">Name of the API command call</param>
    public void SetLinkAndName(string ip, string commandName)
    {
        Link = string.Format(HttpHelper.API_FORMAT_STR, ip, commandName);
        Name = commandName;
    }
}

/// <summary>
/// Secondary object inside the MIB returned by the ATC
/// for detector loop status.
/// This object primary
/// holds the values of the request or command.
/// </summary>
[Serializable]
public class Data1MibElement
{
    [XmlAttribute("index")]
    public int Index { get; set; }

    [XmlArray("index")]
    [XmlArrayItem("data", typeof(Data2MibElement))]
    public List<Data2MibElement> Data2List { get; set; }

    [XmlElement("data")]
    public Data2MibElement Data { get; set; }

    /// <summary>
    /// Default Constructor
    /// </summary>
    public Data1MibElement()
    {
        Data2List = new List<Data2MibElement>();
    }

    /// <summary>
    /// Constructor used when building the LoopsStatus MIB object
    /// </summary>
    /// <param name="index">Loop # (1-6) </param>
    /// <param name="counter">Detector loop status value </param>
    public Data1MibElement(int index)
    {
        Index = index;
    }
}

/// <summary>
/// Secondary object inside the MIB returned by the ATC
/// for detector loop status.
/// This object primary
/// holds the values of the request or command.
/// </summary>
[Serializable]
public class Data2MibElement
{
    [XmlAttribute("index")]
    public int Index { get; set; }

    [XmlAttribute("counter")]
    public int Counter { get; set; }

    [XmlArray("bit")]
    public List<BitMibElement> BitList { get; set; }

    /// <summary>
    /// Default Constructor
    /// </summary>
    public Data2MibElement()
    {
        BitList = new List<BitMibElement>();
    }

    /// <summary>
    /// Constructor used when building the LoopsStatus MIB object
    /// </summary>
    /// <param name="index">Loop # (1-6) </param>
    /// <param name="counter">Detector loop status value </param>
    public Data2MibElement(int index, int counter)
    {
        Index = index;
        Counter = counter;
    }
}

/// <summary>
/// Secondary object inside the MIB returned by the ATC
/// for detector loop status.
/// This object primary
/// holds the values of the request or command.
/// </summary>
[Serializable]
public class BitMibElement
{
    [XmlAttribute("index")]
    public int Index { get; set; }

    [XmlAttribute("value")]
    public string Value { get; set; }

    /// <summary>
    /// Default Constructor
    /// </summary>
    public BitMibElement()
    {

    }

    /// <summary>
    /// Constructor used when building the BitMibElement MIB object
    /// </summary>
    /// <param name="index">Loop # (1-6) </param>
    /// <param name="value">Detector loop status value </param>
    public BitMibElement(int index, string value)
    {
        Index = index;
        Value = value;
    }
}

不带+和-字符-在每个数据部分下复制位部分以完全查看完整文件。如果此网页可以让我插入那么长的内容，我可以为您完成。

<?xml version="1.0" encoding="UTF-8"?>
-<mibscalar link="http://1.1.1.1/v1/mib/objs/inputPointGroupStatus?type=xml" name="inputPointGroupStatus" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-<index>
-<data index="1">
-<index>
-<data index="1" counter="0">
<bit/>
</data>
-<data index="2" counter="0">
<bit/>
</data>
-<data index="3" counter="0">
<bit/>
</data>
-<data index="4" counter="0">
<bit/>
</data>
-<data index="5" counter="0">
<bit/>
</data>
-<data index="6" counter="0">
<bit/>
</data>
-<data index="7" counter="0">
<bit/>
</data>
-<data index="8" counter="0">
<bit/>
</data>
-<data index="9" counter="0">
<bit/>
</data>
-<data index="10" counter="0">
<bit/>
</data>
-<data index="11" counter="0">
<bit/>
</data>
-<data index="12" counter="0">
<bit/>
</data>
-<data index="13" counter="0">
<bit/>
</data>
-<data index="14" counter="0">
<bit/>
</data>
-<data index="15" counter="0">
<bit/>
</data>
-<data index="16" counter="0">
<bit/>
</data>
</index>
</data>
+<data index="2">
+<data index="3">
+<data index="4">
+<data index="5">
+<data index="6">
+<data index="7">
+<data index="8">
+<data index="9">
+<data index="10">
</index>
</mibscalar>

Answer 1

从XML生成c＃类（例如xsd.exe和https://xmltocsharp.azurewebsites.net/）的工具在创建使用某些给定XML的类型时非常有用，但它们有局限性。可能遇到的一个限制是它们不能正确检测递归数据结构，即直接或间接包含自身其他实例的类型。这就是你在这里的东西。

您的XML元素展示的嵌套关系如下：

根元素<mibscalar>具有（多个）<index>（或<bit>？）。
<index>具有多个<data>。
<data>具有多个<index>或<bit>（或两者都有？）。

此结构可以建模如下：

[XmlRoot(ElementName = "mibscalar")]
public class Mibscalar
{
    [XmlAttribute(AttributeName = "link")]
    public string Link { get; set; }
    [XmlAttribute(AttributeName = "type")]
    public string Type { get; set; }
    [XmlAttribute(AttributeName = "name")]
    public string Name { get; set; }

    [XmlElement("bit", typeof(Bit))]
    [XmlElement("index", typeof(Index))]
    public List<DataItemBase> Items { get; set; }
}

public class Data
{
    [XmlAttribute(AttributeName = "index")]
    public string Index { get; set; }
    [XmlAttribute(AttributeName = "counter")]
    public string Counter { get; set; }

    [XmlElement("bit", typeof(Bit))]
    [XmlElement("index", typeof(Index))]
    public List<DataItemBase> Items { get; set; }
}

public abstract class DataItemBase
{
}

public class Index : DataItemBase
{
    [XmlAttribute(AttributeName = "name")]
    public string Name { get; set; }

    [XmlElement(ElementName = "data")]
    public List<Data> Data { get; set; }
}

public class Bit : DataItemBase
{
    [XmlAttribute(AttributeName = "index")]
    public string Index { get; set; }
    [XmlAttribute(AttributeName = "value")]
    public string Value { get; set; }
}

我使用https://xmltocsharp.azurewebsites.net/生成初始类，然后对其进行了修改以更正父/子层次结构。

工作示例.Net在这里拨弄：https://dotnetfiddle.net/9yQ7oN。

无法读取XML的第3级

1 个答案: