C#编程读取文档Doc、Docx及Pdf内容的方法

/*
 作者：GhostBear
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;
using org.pdfbox.pdmodel;
using org.pdfbox.util;
using Microsoft.Office.Interop.Word;
namespace TestPdfReader
{
 class Program
 {
 static void Main(string[] args)
 {
  //PDF
  PDDocument doc = PDDocument.load(@"C:\resume.pdf");
  PDFTextStripper pdfStripper = new PDFTextStripper();
  string text = pdfStripper.getText(doc);
  string result = text.Replace('\t', ' ').Replace('\n', ' ').Replace('\r', ' ').Replace(" ", "");
  Console.WriteLine(result);
  //Doc,Docx
  object docPath = @"C:\resume.doc";
  object docxPath = @"C:\resume.docx";
  object missing=System.Reflection.Missing.Value;
  object readOnly=true;
  Application wordApp;
  wordApp = new Application();
  Document wordDoc = wordApp.Documents.Open(ref docPath,
       ref missing,
       ref readOnly,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing,
       ref missing);
  string text2 = FilterString(wordDoc.Content.Text);
  wordDoc.Close(ref missing, ref missing, ref missing);
  wordApp.Quit(ref missing, ref missing, ref missing);
  Console.WriteLine(text2);
  Console.Read();
  
 }
 private static string FilterString(string input)
 {
  return Regex.Replace(input, @"(\a|\t|\n|\s+)", "");
 }
 }
}