c# - iTextSharp 索引超出范围

Question

不断收到 IndexOutOfRangeException 是未处理的异常。

var sb = new StringBuilder();
var bdn = String.Format("{0}\\bdn.pdf", Application.StartupPath);
var reader = new PdfReader("bdn.pdf");
var numberOfPages = reader.NumberOfPages;
for (var currentPageIndex = 1; currentPageIndex <= numberOfPages; currentPageIndex++)
{
        sb.Append(PdfTextExtractor.GetTextFromPage(reader, currentPageIndex));
}

Answer 1

确保您运行的 iTextSharp 版本大于 5.1，该版本有一个与您的问题完全匹配的错误:

• iTextSharp v5 GetTextFromPage() throws IndexOutOfRangeException
• Index was outside the bounds of the array while reading a .Pdf using iTextSharp

刚刚使用 5.5.4.0(最新版本)测试，使用此代码，有效:

    StringBuilder sb = new StringBuilder();
// substitute 'pdfPath' with path to YOUR PDF
    PdfReader reader = new PdfReader(pdfPath);
    int pageNumber = 1;
    while (pageNumber <= reader.NumberOfPages) {
      sb.Append(PdfTextExtractor.GetTextFromPage(reader, pageNumber));
      ++pageNumber;
    }