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我需要有关 XML 结构的帮助，因为我完全是 XML 新手，所以我可能会错误地设计结构以供以后在 VB.NET 中阅读。

（这就像我对此做的第四个问题......但不是重复的，请全面了解这一点，我正在认真对待这件事，以我自己的优点来做这件事，我厌倦了写同样的事情这个话题。）

在一个应用程序中，我希望能够管理我的音乐收藏，现在我有很多文本文件（239 个文件），标题如下：

90's Dance
2006 Electro
2007 Hardstyle
2013 Pop (English)
2013 Rock (English)
2013 UK Hardcore

如您所见，由Year Musicstyle.txt

好吧，每个文件都包含这样的数据：

Ab - Stay With Me;320;05:53;13,54
Above & Beyond Feat. Richard Bedford - Sun & Moon (Reaktor Hardcore Remix);320;06:03;13,87
Adrenalin - No Need To Run;320;06:07;14,04
Afrojack & Steve Aoki Feat. Miss Palmer - No Beef (Nobody Bootleg);320;05:45;13,19
Andy Wilson - Forever Loved;192;05:45;7,89

如您所见，由Filename;Bitrate;Duration;SizeInMegabytes

SO的很多人说我最好用SQL或XML创建数据库，这就是我尝试的方法，因为SQL似乎很难开始学习，我对XML或SQL一无所知。

嗯，你可以看到我的 XML 文件需要的结构，xml 文件需要用 and 分隔Year，然后MusicStyle我会放歌曲信息。

我已经阅读了在 VB.NET 中编写 xml 文件的教程，但我得到的最终结构如下所示：

<?xml version="1.0" encoding="utf-8"?>
<!--XML Songs Database.-->
<Songs>
  <_2013>
    <Rock>
      <FileName>My Song 1.mp3</FileName>
      <Bitrate>320</Bitrate>
      <Duration>04:55</Duration>
      <Filesize>4,80</Filesize>
      <FileName>My Song 2.mp3</FileName>
      <Bitrate>192</Bitrate>
      <Duration>06:44</Duration>
      <Filesize>8,43</Filesize>
      <FileName>My Song 3.mp3</FileName>
      <Bitrate>128</Bitrate>
      <Duration>05:12</Duration>
      <Filesize>4,20</Filesize>
      <FileName>My Song 4.mp3</FileName>
      <Bitrate>256</Bitrate>
      <Duration>07:32</Duration>
      <Filesize>9,51</Filesize>
    </Rock>
  </_2013>
</Songs>

但我认为这种结构是不正确的，我不知道，但阅读这样的结构不会更好更容易吗？：

<?xml version="1.0" encoding="utf-8"?>
<!--XML Songs Database.-->
<Songs>
  <_2013>
    <Rock>
      <FileName>My Song 1.mp3</FileName><Bitrate>320</Bitrate><Duration>04:55</Duration><Filesize>4,80</Filesize>
      <FileName>My Song 2.mp3</FileName><Bitrate>192</Bitrate><Duration>06:44</Duration><Filesize>8,43</Filesize>
      <FileName>My Song 3.mp3</FileName><Bitrate>128</Bitrate><Duration>05:12</Duration><Filesize>4,20</Filesize>
      <FileName>My Song 4.mp3</FileName><Bitrate>256</Bitrate><Duration>07:32</Duration><Filesize>9,51</Filesize>
    </Rock>
  </_2013>
</Songs>

问题是：

  1. 我不确定哪个是我的数据库要求的最佳结构设计。

  2. 我不确切知道如何设计它，所以我需要帮助来修复代码和设计。

  3. 我试过了，但我不能写第二种结构（我说它似乎更容易阅读）

这是我用来编写第一种结构类型的代码：

Imports System
Imports System.Xml

Public Class Form1

    ' lets create the MyXML.xml document,
    Dim xmlfile As String = "c:\MyXML.xml"

    ' declare our xmlwriter object
    Dim Xml As XmlWriter = XmlWriter.Create(xmlfile, _
                              New XmlWriterSettings() With {.Indent = True})

    Private Sub Form1_Shown(sender As Object, e As EventArgs) Handles MyBase.Shown

        ' Write the Xml declaration.
        Write_Start(Xml)

        ' Write a comment.
        Write_Comment(Xml, "XML Songs Database.")

        ' Write the root element.
        Write_Element(Xml, "Songs")

        ' Start our first year element.
        Write_Element(Xml, "_2013")

        ' Start our first music style.
        Xml.WriteStartElement("Rock")

        ' The music style song nodes:
        Write_SongInfo_Node(Xml, "My Song 1.mp3", "320", "04:55", "4,80")
        Write_SongInfo_Node(Xml, "My Song 2.mp3", "192", "06:44", "8,43")
        Write_SongInfo_Node(Xml, "My Song 3.mp3", "128", "05:12", "4,20")
        Write_SongInfo_Node(Xml, "My Song 4.mp3", "256", "07:32", "9,51")

        ' Write the xml end
        Write_End(Xml)

        ' Start the file and exit
        Process.Start(xmlfile) : Application.Exit()

    End Sub


    Private Sub Write_Start(ByVal xml As XmlWriter)
        Xml.WriteStartDocument()
    End Sub

    Private Sub Write_Comment(ByVal xml As XmlWriter, ByVal Comment As String)
        xml.WriteComment(Comment)
    End Sub

    Private Sub Write_Element(ByVal xml As XmlWriter, ByVal element As String)
        xml.WriteStartElement(element)
    End Sub

    Private Sub Write_SongInfo_Node(ByVal xml As XmlWriter,
                      ByVal Filename As String, _
                      ByVal Bitrate As String, _
                      ByVal Duration As String, _
                      ByVal Filesize As String)

        xml.WriteStartElement("FileName")
        xml.WriteString(Filename)
        xml.WriteEndElement()

        xml.WriteStartElement("Bitrate")
        xml.WriteString(Bitrate)
        xml.WriteEndElement()

        xml.WriteStartElement("Duration")
        xml.WriteString(Duration)
        xml.WriteEndElement()

        xml.WriteStartElement("Filesize")
        xml.WriteString(Filesize)
        xml.WriteEndElement()

    End Sub

    Private Sub Write_End(ByVal xml As XmlWriter)
        xml.WriteEndDocument()
        xml.Close()
    End Sub

End Class

更新：

我得到这个缩进格式：

<?xml version="1.0" encoding="utf-8"?>
<!--XML Songs Database.-->
<Songs>
  <Song>
    <FileName>My Song 1.mp3</FileName>
    <Year>2007</Year>
    <Genre>Dance</Genre>
    <Bitrate>320</Bitrate>
    <Duration>04:55</Duration>
    <Filesize>4,80</Filesize>
  </Song>
  <Song>
    <FileName>My Song 2.mp3</FileName>
    <Year>2009</Year>
    <Genre>Electro</Genre>
    <Bitrate>192</Bitrate>
    <Duration>06:44</Duration>
    <Filesize>8,43</Filesize>
  </Song>
  <Song>
    <FileName>My Song 3.mp3</FileName>
    <Year>2008</Year>
    <Genre>UK Hardcore</Genre>
    <Bitrate>128</Bitrate>
    <Duration>05:12</Duration>
    <Filesize>4,20</Filesize>
  </Song>
  <Song>
    <FileName>My Song 4.mp3</FileName>
    <Year>2013</Year>
    <Genre>Techno</Genre>
    <Bitrate>256</Bitrate>
    <Duration>07:32</Duration>
    <Filesize>9,51</Filesize>
  </Song>
</Songs>

但我希望这种格式可以节省“空格”字符的数量，然后节省文件大小：

<?xml version="1.0" encoding="utf-8"?>
<!--XML Songs Database.-->
<Songs>
  <Song><FileName>My Song 1.mp3</FileName><Year>2007</Year><Genre>Dance</Genre><Bitrate>320</Bitrate><Duration>04:55</Duration><Filesize>4,80</Filesize></Song>
  <Song><FileName>My Song 2.mp3</FileName><Year>2009</Year><Genre>Electro</Genre><Bitrate>192</Bitrate><Duration>06:44</Duration><Filesize>8,43</Filesize></Song>
  <Song><FileName>My Song 3.mp3</FileName><Year>2008</Year><Genre>UK Hardcore</Genre><Bitrate>128</Bitrate><Duration>05:12</Duration><Filesize>4,20</Filesize></Song>
  <Song><FileName>My Song 4.mp3</FileName><Year>2013</Year><Genre>Techno</Genre><Bitrate>256</Bitrate><Duration>07:32</Duration><Filesize>9,51</Filesize></Song>
</Songs>

这就是我正在尝试的：

Private Sub Write_SongInfo_Node(ByVal xml As XmlWriter,
                  ByVal Filename As String, _
                  ByVal Year As String, _
                  ByVal Genre As String, _
                  ByVal Bitrate As String, _
                  ByVal Duration As String, _
                  ByVal Filesize As String)

    xml.WriteStartElement("Song")

    ' xml.Settings.Indent = False

    xml.WriteStartElement("FileName")
    xml.WriteString(Filename)
    xml.WriteEndElement()

    xml.WriteStartElement("Year")
    xml.WriteString(Year)
    xml.WriteEndElement()

    xml.WriteStartElement("Genre")
    xml.WriteString(Genre)
    xml.WriteEndElement()

    xml.WriteStartElement("Bitrate")
    xml.WriteString(Bitrate)
    xml.WriteEndElement()

    xml.WriteStartElement("Duration")
    xml.WriteString(Duration)
    xml.WriteEndElement()

    xml.WriteStartElement("Filesize")
    xml.WriteString(Filesize)
    xml.WriteEndElement()

    '  xml.Settings.Indent = True

    xml.WriteEndElement()

End Sub
4

1 回答 1

3

除了一些换行符之外，您的 XML 示例没有任何区别。您需要将每首歌曲粘贴在一个Song元素中，因此您的 XML 变为：

<Rock>
    <Song>
        <FileName> [..]</Filesize>
    </Song>
    <Song>
        <FileName> [..]</Filesize>
    </Song>
    [..]
<Rock>

话虽如此，我不会按年份或类别对您的文件进行分组。这些又是这首歌的属性。

于 2013-10-23T09:03:47.787 回答