我正在使用acrobat.tlb库解析.pdf
在连续删除连字符的新行中,连字符被分开.
例如
ABC-123-XXX-987
解析为：
ABC
123
XXX
987
如果我使用iTextSharp解析文本,它会解析文件中显示的整个字符串,这是我想要的行为.但是,我需要在.pdf和iTextSharp中突出显示这些字符串(序列号),而不是将突出显示放在正确的位置…因此acrobat.tlb
我正在使用此代码,从这里：http://www.vbforums.com/showthread.php?561501-RESOLVED-2003-How-to-highlight-text-in-pdf
' filey = "*your full file name including directory here*"
AcroExchApp = CreateObject("AcroExch.App")
AcroExchAVDoc = CreateObject("AcroExch.AVDoc")
' Open the [strfiley] pdf file
AcroExchAVDoc.Open(filey,"")
' Get the PDDoc associated with the open AVDoc
AcroExchPDDoc = AcroExchAVDoc.GetPDDoc
sustext = "accessorizes"
suktext = "accessorises"
' get JavaScript Object
' note jso is related to PDDoc of a PDF,jso = AcroExchPDDoc.GetJSObject
' count
nCount = 0
nCount1 = 0
gbStop = False
bUSCnt = False
bUKCnt = False
' search for the text
If Not jso Is Nothing Then
' total number of pages
nPages = jso.numpages
' Go through pages
For i = 0 To nPages - 1
' check each word in a page
nWords = jso.getPageNumWords(i)
For j = 0 To nWords - 1
' get a word
word = Trim(CStr(jso.getPageNthWord(i,j)))
'If VarType(word) = VariantType.String Then
If word <> "" Then
' compare the word with what the user wants
If Trim(sustext) <> "" Then
result = StrComp(word,sustext,vbTextCompare)
' if same
If result = 0 Then
nCount = nCount + 1
If bUSCnt = False Then
iUSCnt = iUSCnt + 1
bUSCnt = True
End If
End If
End If
If suktext<> "" Then
result1 = StrComp(word,suktext,vbTextCompare)
' if same
If result1 = 0 Then
nCount1 = nCount1 + 1
If bUKCnt = False Then
iUKCnt = iUKCnt + 1
bUKCnt = True
End If
End If
End If
End If
Next j
Next i
jso = Nothing
End If
代码执行突出显示文本的工作,但带有’word’变量的FOR循环将带连字符的字符串拆分为组件部分.
For i = 0 To nPages - 1
' check each word in a page
nWords = jso.getPageNumWords(i)
For j = 0 To nWords - 1
' get a word
word = Trim(CStr(jso.getPageNthWord(i,j)))
有谁知道如何使用acrobat.tlb维护整个字符串？我的相当广泛的搜索空白.
我可以理解iTextSharp在突出显示文本时很麻烦,因为你必须绘制一个矩形并变得复杂,但acrobat.tlb的解决方案也有它的缺点.它不是免费的,很少有人会使用它.对我们其他人来说更好的解决方案是免费且易于使用的Spire.Pdf.你可以从NuGet包中获得它.代码执行以下操作：
- Opens .pdf
- Read each text page
- using regular expression find matches
- save them to a list of strings eliminating duplicates
- for each string in this list search page and highlight the word
码：
Dim pdf As PdfDocument = New PdfDocument("Path")
Dim pattern As String = "([A-Z,0-9]{3}[-][A-Z,0-9]{3})"
Dim matches As MatchCollection
Dim result As PdfTextFind() = Nothing
Dim content As New StringBuilder()
Dim matchList As New List(Of String)
For Each page As PdfPageBase In pdf.Pages
'get text from current page
content.Append(page.ExtractText())
'find matches
matches = Regex.Matches(content.ToString,pattern,RegexOptions.None)
matchList.Clear()
'Assign each match to a string list.
For Each match As Match In matches
matchList.Add(match.Value)
Next
'Eliminate duplicates.
matchList = matchList.Distinct.ToList
'for each string in list
For i = 0 To matchList.Count - 1
'find all occurances of matchList(i) string in page and highlight it
result = page.FindText(matchList(i)).Finds
For Each find As PdfTextFind In result
find.ApplyHighLight(Color.BlueViolet) 'you can set your color preference
Next
Next 'matchList
Next 'page
pdf.SaveToFile("New Path")
pdf.Close()
pdf.Dispose()
我在正则表达方面不太好,所以你可以实现你的.无论如何,那是我的方法.