c# - pdf 到 xml 转换使用 .NET

1 using System; 2 using System.IO; 3 using iTextSharp.text.pdf; 4 5 namespace PdfToText 6 { 7 /// 8 /// Parses a PDF file and extracts the text from it. 9 /// 10 public class PDFParser 11 { 12 /// BT = Beginning of a text object operator 13 /// ET = End of a text object operator 14 /// Td move to the start of next line 15 /// 5 Ts = superscript 16 /// -5 Ts = subscript 17 18 #region Fields 19 20 #region _numberOfCharsToKeep 21 /// 22 /// The number of characters to keep, when extracting text. 23 /// 24 private static int _numberOfCharsToKeep = 15; 25 #endregion 26 27 #endregion 28 29 #region ExtractText 30 /// 31 /// Extracts a text from a PDF file. 32 /// 33 /// the full path to the pdf file. 34 /// the output file name. 35 /// the extracted text 36 public bool ExtractText(string inFileName, string outFileName) 37 { 38 StreamWriter outFile = null; 39 try 40 { 41 // Create a reader for the given PDF file 42 PdfReader reader = new PdfReader(inFileName); 43 //outFile = File.CreateText(outFileName); 44 outFile = new StreamWriter(outFileName, false, System.Text.Encoding.UTF8); 45 46 Console.Write("Processing: "); 47 48 int totalLen = 68; 49 float charUnit = ((float)totalLen) / (float)reader.NumberOfPages; 50 int totalWritten= 0; 51 float curUnit = 0; 52 53 for (int page = 1; page = 1.0f) 59 { 60 for (int i = 0; i = 1.0f) 70 { 71 for (int i = 0; i 104 /// This method processes an uncompressed Adobe (text) object 105 /// and extracts text. 106 /// 107 /// uncompressed 108 /// 109 private string ExtractTextFromPDFBytes(byte[] input) 110 { 111 if (input == null || input.Length == 0) return ""; 112 113 try 114 { 115 string resultString = ""; 116 117 // Flag showing if we are we currently inside a text object 118 bool inTextObject = false; 119 120 // Flag showing if the next character is literal 121 // e.g. '\\' to get a '\' character or '\(' to get '(' 122 bool nextLiteral = false; 123 124 // () Bracket nesting level. Text appears inside () 125 int bracketDepth = 0; 126 127 // Keep previous chars to get extract numbers etc.: 128 char[] previousCharacters = new char[_numberOfCharsToKeep]; 129 for (int j = 0; j = ' ') && (c = 128) && (c 235 /// Check if a certain 2 character token just came along (e.g. BT) 236 /// 237 /// the searched token 238 /// the recent character array 239 /// 240 private bool CheckToken(string[] tokens, char[] recent) 241 { 242 foreach(string token in tokens) 243 { 244 if ((recent[_numberOfCharsToKeep - 3] == token[0]) && 245 (recent[_numberOfCharsToKeep - 2] == token[1]) && 246 ((recent[_numberOfCharsToKeep - 1] == ' ') || 247 (recent[_numberOfCharsToKeep - 1] == 0x0d) || 248 (recent[_numberOfCharsToKeep - 1] == 0x0a)) && 249 ((recent[_numberOfCharsToKeep - 4] == ' ') || 250 (recent[_numberOfCharsToKeep - 4] == 0x0d) || 251 (recent[_numberOfCharsToKeep - 4] == 0x0a)) 252 ) 253 { 254 return true; 255 } 256 } 257 return false; 258 } 259 #endregion 260 } 261 }

try { //XmlDataDocument sourceXML = new XmlDataDocument(); string xmlFile = Server.MapPath(“DVDlist.xml”); //create a XML file is not exist System.Xml.XmlTextWriter writer = new System.Xml.XmlTextWriter(xmlFile, null); //starts a new document writer.WriteStartDocument(); //write comments writer.WriteComment(“Commentss: XmlWriter Test Program”); writer.Formatting = Formatting.Indented; writer.WriteStartElement(“DVDlist”); writer.WriteStartElement(“DVD”); writer.WriteAttributeString(“ID”, “1″); //write some simple elements writer.WriteElementString(“Title”, “Tere Naam”); writer.WriteStartElement(“Starring”); writer.WriteElementString(“Actor”, “Salman Khan”); writer.WriteEndElement(); writer.WriteEndElement(); writer.WriteEndElement(); writer.Close(); } catch (Exception e1) { Page.Response.Write(e1); }