回答編集履歴
2
XMLAgilityPackの例を追加しました．
answer
CHANGED
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@@ -86,4 +86,42 @@
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86
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</tempDataRoot>
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87
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```
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89
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入力はたまたまXHTMLでした．他のダーティーなのでも試した方が良いのでしょうけれども、私の家は冷房なしでこれ以上気力が持ちません... あと普段まずVisual Studioを立ち上げる機会はゼロです．おかしな点があるかもしれません、ご容赦ください．
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89
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入力はたまたまXHTMLでした．他のダーティーなのでも試した方が良いのでしょうけれども、私の家は冷房なしでこれ以上気力が持ちません... あと普段まずVisual Studioを立ち上げる機会はゼロです．おかしな点があるかもしれません、ご容赦ください．
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90
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+
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91
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［追記］
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92
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> HtmlAgilityPackを使ってみましたが結果は散々でした．
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93
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94
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HtmlAgilityPackでもいろいろやった末、以下のコードで動きました．エンコーディングの指定が要るようです．
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95
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96
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```vb
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Imports System.Text.Encoding
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98
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Imports System.Net
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99
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Imports HtmlAgilityPack
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100
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101
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...
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102
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103
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Sub Main()
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104
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Dim xw As XmlWriter = CreateXmlWriter("maxTemp.xml")
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xw.WriteStartElement("tempDataRoot", "")
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106
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Dim wc As WebClient = New WebClient()
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107
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wc.Encoding = UTF8
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108
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Dim htmlSource As String = wc.DownloadString("http://www.data.jma.go.jp/obd/stats/data/mdrr/synopday/data1s.html")
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109
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Dim doc As HtmlDocument = New HtmlDocument()
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110
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doc.LoadHtml(htmlSource)
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111
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Dim trs = doc.DocumentNode.SelectNodes("//table[@class = 'o1']//tr[@class != 'o1h']")
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112
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For Each tr In trs
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Dim tds As IEnumerable(Of HtmlNode) = tr.Elements("td")
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Dim tdArray As HtmlNode() = tds.ToArray
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Dim regionTd As HtmlNode = tdArray(0)
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Dim maxTempTd As HtmlNode = tdArray(6)
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xw.WriteStartElement("tempData")
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xw.WriteAttributeString("region", regionTd.InnerText)
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119
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xw.WriteAttributeString("maxTemp", maxTempTd.InnerText)
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120
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Debug.WriteLine("region={0} max-temp={1}", regionTd.InnerText, maxTempTd.InnerText)
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xw.WriteEndElement()
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Next
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xw.WriteEndElement()
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xw.Close()
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End Sub
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126
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127
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```
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1
サンプルプログラムを追加しました．
answer
CHANGED
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@@ -15,4 +15,75 @@
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15
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という訳でMSXMLは入力がXHTMLでない限りあきらめられた方が良いと思います．
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以上 少しでもお役にたてば．
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以上 少しでもお役にたてば．
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［追記］
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21
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コメントに書きましたプログラムです．
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22
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23
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```vb
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24
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Imports System.Xml
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25
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Imports System.Xml.XPath
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26
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Imports System.Text.Encoding
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27
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Imports Sgml
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28
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Module HtmlXPathModule
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29
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Sub Main()
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Dim xw As XmlWriter = CreateXmlWriter("maxTemp.xml")
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xw.WriteStartElement("tempDataRoot", "")
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Dim sgml As SgmlReader = New SgmlReader()
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sgml.DocType = "HTML"
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34
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sgml.Href = "http://www.data.jma.go.jp/obd/stats/data/mdrr/synopday/data1s.html"
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35
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sgml.IgnoreDtd = True
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Dim htmlDoc As XDocument = XDocument.Load(sgml)
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37
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Dim nsTable As NameTable = New NameTable
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Dim nsMgr As XmlNamespaceManager = New XmlNamespaceManager(nsTable)
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nsMgr.AddNamespace("xhtml", "http://www.w3.org/1999/xhtml")
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Dim targetTrs As IEnumerable(Of XElement) = htmlDoc.XPathSelectElements("//xhtml:table[@class = 'o1']//xhtml:tr[@class != 'o1h']", nsMgr)
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For Each tr As XElement In targetTrs
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42
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Dim targetTds As IEnumerable(Of XElement) = tr.Elements
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Dim tdArray As XElement() = targetTds.ToArray
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Dim region As XElement = tdArray(0)
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Dim maxTemp As XElement = tdArray(6)
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xw.WriteStartElement("tempData")
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xw.WriteAttributeString("region", "", region.Value)
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xw.WriteAttributeString("maxTemp", "", maxTemp.Value)
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xw.WriteEndElement()
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Next
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xw.WriteEndElement()
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xw.Close()
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End Sub
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54
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55
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Function CreateXmlWriter(outputPath As String) As XmlWriter
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Dim settings As XmlWriterSettings = New XmlWriterSettings()
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settings.CloseOutput = True
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settings.ConformanceLevel = ConformanceLevel.Document
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settings.Encoding = UTF8
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settings.Indent = False
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settings.NewLineChars = vbCrLf
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settings.NewLineHandling = NewLineHandling.None
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settings.OmitXmlDeclaration = False
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settings.WriteEndDocumentOnClose = False
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Dim xw As XmlWriter = XmlWriter.Create(outputPath, settings)
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Return xw
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End Function
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68
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69
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End Module
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70
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```
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71
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72
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こんなXMLが出ます．（maxTemp.xml）今日は日本列島暑いです．37℃越え（！）のところもあります．
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73
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74
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```XML
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75
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<?xml version="1.0" encoding="UTF-8"?>
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<tempDataRoot>
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<tempData maxTemp="27.1]" region="札幌"/>
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<tempData maxTemp="26.9]" region="稚内"/>
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<tempData maxTemp="26.0]" region="北見枝幸"/>
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...
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<tempData maxTemp="37.1]" region="鹿児島"/>
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...
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<tempData maxTemp="31.3]" region="西表島"/>
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<tempData maxTemp="33.1]" region="石垣島"/>
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<tempData maxTemp="" region="昭和"/>
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86
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</tempDataRoot>
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87
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```
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88
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+
|
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89
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+
入力はたまたまXHTMLでした．他のダーティーなのでも試した方が良いのでしょうけれども、私の家は冷房なしでこれ以上気力が持ちません... あと普段まずVisual Studioを立ち上げる機会はゼロです．おかしな点があるかもしれません、ご容赦ください．
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