使用Itext从PDF读取符号和文本

Question

我一直在使用以下C＃代码从PDF文件中读取文本：

PdfReader reader = new PdfReader(openFileDialog1.FileName);
            int n = reader.NumberOfPages;               
            // file properties
            Dictionary<string, string> infodict = reader.Info;
            string strText = string.Empty;
            PdfReader reader2 = new PdfReader(openFileDialog1.FileName);
            for (int page = 1; page <= n; page++)
            {
                ITextExtractionStrategy its = new iTextSharp.text.pdf.parser.SimpleTextExtractionStrategy();    
                String s = PdfTextExtractor.GetTextFromPage(reader, page, its);                   
                s = Encoding.UTF8.GetString(ASCIIEncoding.Convert(Encoding.Default, Encoding.UTF8, Encoding.Default.GetBytes(s)));
                strText = strText + s;
                reader.Close();
            }
            MessageBox.Show(strText);

此代码无法读取pdf文件中的符号。有什么办法我还可以从PDF文件中读取符号吗？

Answer 1

试试这个，使用LocationTextExtractionStrategy而不是SimpleTextExtractionStrategy