java学习笔记 读取pdf文件并写成txt文件输出

1、用到的jar有：pdfbox-1.8.4.jar ，fontbox-1.8.4.jar ，pdfbox-app-1.8.4.jar ， preflight-1.8.4.jar，preflight-app-1.8.4.jar，jempbox-1.8.4.jar，xmpbox-1.8.4

第一次写Java，不知道哪些jar是要用的，全部都添加进去了。下载地址：http://pdfbox.apache.org/downloads.html

2、将jar放在工程目录下，右键工程→Build Path→Configure Build Path→lib→Add JARs/Add External JARs

3、代码     

参考：http://blog.csdn.net/meifage/article/details/6963985

参考：http://daning.iteye.com/blog/165284

参考：http://blog.csdn.net/weijie_search/article/details/2662189

package pdfReader;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStreamWriter;import java.io.UnsupportedEncodingException;import java.io.Writer;import org.apache.pdfbox.pdfparser.PDFParser;import org.apache.pdfbox.pdmodel.PDDocument;import org.apache.pdfbox.util.PDFTextStripper;public class pdfReaderClass {public static void main(String[] args)    {System.out.println("Start...");//System.out.println("Input the pdf document path:");//String pdfFilePath = System.in.toString();String pdfFilePath = "F:\\Eclipseworkspace\\read2.pdf";//为pdf路径赋默认值System.out.println("The pdf file path is: " + pdfFilePath);//将结果路径设置为原pdf文件路径String txtFilePath = null;if (pdfFilePath.length() > 4){txtFilePath = pdfFilePath.substring(0, pdfFilePath.length() - 4) + ".txt";}else System.out.println("The pdf file path is invalid！");    String str=pdfReaderClass.getTextFromPDF(pdfFilePath);  //获取pdf文件        File outputTxt = new File(txtFilePath);    //    FileOutputStream fos = null;//try {//fos = new FileOutputStream(outputTxt);//} catch (FileNotFoundException e) {//// TODO Auto-generated catch block//e.printStackTrace();//}//    DataOutputStream out = new DataOutputStream(fos);//    try {//out.writeUTF(str);//} catch (IOException e) {//// TODO Auto-generated catch block//e.printStackTrace();//}        Writer txtWriter = null;    try {txtWriter = new OutputStreamWriter(new FileOutputStream(outputTxt), "UTF-8");} catch (UnsupportedEncodingException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}     try {txtWriter.write(str);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}    if (txtWriter != null) {       // 关闭输出流     try {txtWriter.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}      }  //        System.out.println(str); System.out.println("The output file path is: " + txtFilePath);        System.out.println("Over!");    }/**      * @param pdfFilePath file path      * @return all text in the pdf file      **/     public static String getTextFromPDF(String pdfFilePath) {          String result = null;          FileInputStream is = null;          PDDocument document = null;          try {              is = new FileInputStream(pdfFilePath);              PDFParser parser = new PDFParser(is);              parser.parse();              document = parser.getPDDocument();              PDFTextStripper stripper = new PDFTextStripper();              result = stripper.getText(document);          } catch (FileNotFoundException e) {              // TODO Auto-generated catch block              e.printStackTrace();          } catch (IOException e) {              // TODO Auto-generated catch block              e.printStackTrace();          } finally {              if (is != null) {                  try {                    is.close();                  } catch (IOException e) {                      // TODO Auto-generated catch block                System.out.println("The FileInputStream is null！");                    e.printStackTrace();                  }              }              if (document != null) {                  try {                      document.close();                  } catch (IOException e) {                      // TODO Auto-generated catch block                  System.out.println("Fail to get the pdf document！");                    e.printStackTrace();                  }              }          }          return result;      }  }

遇到的问题：http://blog.csdn.net/lin9118/article/details/9309445