JAVA读取PDF、WORD、EXCEL等文件的方法

 http://www.ibm.com/developerworks/cn/java/l-javaExcel/

OFFICE文档使用POI控件，PDF可以使用PDFBOX0.7.3控件，完全支持中文，用XPDF也行，不过感觉PDFBOX比较好，而且作者也在更新。水平有限，万望各位指正。

WORD:
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.poi.hwpf.extractor.WordExtractor;

import java.io.File;
import java.io.InputStream;
import java.io.FileInputStream;

import com.search.code.Index;

public Document getDocument(Index index, String url, String title, InputStream is) throws DocCenterException {

   String bodyText = null;
   try {
    WordExtractor ex = new WordExtractor(is);//is是WORD文件的InputStream
    bodyText = ex.getText();
    if(!bodyText.equals("")){
     index.AddIndex(url, title, bodyText);
    }
   }catch (DocCenterException e) {
    throw new DocCenterException("无法从该Mocriosoft Word文档中提取内容", e);
   }catch(Exception e){
    e.printStackTrace();
   }
}
   return null;
}



Excel:

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;

import org.apache.poi.hwpf.extractor.WordExtractor;
import   org.apache.poi.hssf.usermodel.HSSFWorkbook;
import   org.apache.poi.hssf.usermodel.HSSFSheet;
import   org.apache.poi.hssf.usermodel.HSSFRow;
import   org.apache.poi.hssf.usermodel.HSSFCell;

import java.io.File;
import java.io.InputStream;
import java.io.FileInputStream;

import com.search.code.Index;



public Document getDocument(Index index, String url, String title, InputStream is) throws DocCenterException {
   StringBuffer content = new StringBuffer();
   try{
    HSSFWorkbook   workbook   =   new   HSSFWorkbook(is);//创建对Excel工作簿文件的引用
    for (int numSheets = 0; numSheets < workbook.getNumberOfSheets(); numSheets++) {
     if (null != workbook.getSheetAt(numSheets)) {
      HSSFSheet aSheet = workbook.getSheetAt(numSheets);//获得一个sheet
         for (int rowNumOfSheet = 0; rowNumOfSheet <= aSheet.getLastRowNum(); rowNumOfSheet++) {
          if (null != aSheet.getRow(rowNumOfSheet)) {
           HSSFRow aRow = aSheet.getRow(rowNumOfSheet); //获得一个行
           for (short cellNumOfRow = 0; cellNumOfRow <= aRow.getLastCellNum(); cellNumOfRow++) {
            if (null != aRow.getCell(cellNumOfRow)) {
             HSSFCell aCell = aRow.getCell(cellNumOfRow);//获得列值
             content.append(aCell.getStringCellValue());
            }
           }
          }
         }
     }
    }
    if(!content.equals("")){
     index.AddIndex(url, title, content.toString());
    }
   }catch (DocCenterException e) {

    throw new DocCenterException("无法从该Mocriosoft Word文档中提取内容", e);
   }catch(Exception   e)   {
    System.out.println("已运行xlRead()   :   "   +   e   );
   }
   return null;
}



PowerPoint:

import java.io.InputStream;

import org.apache.lucene.document.Document;
import org.apache.poi.hslf.HSLFSlideShow;
import org.apache.poi.hslf.model.TextRun;
import org.apache.poi.hslf.model.Slide;
import org.apache.poi.hslf.usermodel.SlideShow;

public Document getDocument(Index index, String url, String title, InputStream is)
throws DocCenterException {
   StringBuffer content = new StringBuffer("");
   try{
    SlideShow ss = new SlideShow(new HSLFSlideShow(is));//is 为文件的InputStream，建立SlideShow
    Slide[] slides = ss.getSlides();//获得每一张幻灯片
    for(int i=0;i<slides.length;i++){
     TextRun[] t = slides[i].getTextRuns();//为了取得幻灯片的文字内容，建立TextRun
     for(int j=0;j<t.length;j++){
      content.append(t[j].getText());//这里会将文字内容加到content中去
     }
     content.append(slides[i].getTitle());
    }
    index.AddIndex(url, title, content.toString());
   }catch(Exception ex){
    System.out.println(ex.toString());
   }
   return null;
}



PDF:

import java.io.InputStream;
import java.io.IOException;
import org.apache.lucene.document.Document;

import org.pdfbox.cos.COSDocument;
import org.pdfbox.pdfparser.PDFParser;
import org.pdfbox.pdmodel.PDDocument;
import org.pdfbox.pdmodel.PDDocumentInformation;
import org.pdfbox.util.PDFTextStripper;

import com.search.code.Index;



public Document getDocument(Index index, String url, String title, InputStream is)throws DocCenterException {
  
   COSDocument cosDoc = null;
   try {
    cosDoc = parseDocument(is);
   } catch (IOException e) {
    closeCOSDocument(cosDoc);
    throw new DocCenterException("无法处理该PDF文档", e);
   }
   if (cosDoc.isEncrypted()) {
    if (cosDoc != null)
     closeCOSDocument(cosDoc);
    throw new DocCenterException("该PDF文档是加密文档，无法处理");
   }
   String docText = null;
   try {
    PDFTextStripper stripper = new PDFTextStripper();
    docText = stripper.getText(new PDDocument(cosDoc));
   } catch (IOException e) {
    closeCOSDocument(cosDoc);
    throw new DocCenterException("无法处理该PDF文档", e);
   }

   PDDocument pdDoc = null;
   try {
    pdDoc = new PDDocument(cosDoc);
    PDDocumentInformation docInfo = pdDoc.getDocumentInformation();
    if(docInfo.getTitle()!=null && !docInfo.getTitle().equals("")){
     title = docInfo.getTitle();
    }

   } catch (Exception e) {
    closeCOSDocument(cosDoc);
    closePDDocument(pdDoc);
    System.err.println("无法取得该PDF文档的元数据" + e.getMessage());
   } finally {
    closeCOSDocument(cosDoc);
    closePDDocument(pdDoc);
   }
  
   return null;
}

private static COSDocument parseDocument(InputStream is) throws IOException {
   PDFParser parser = new PDFParser(is);
   parser.parse();
   return parser.getDocument();
}

private void closeCOSDocument(COSDocument cosDoc) {
   if (cosDoc != null) {
    try {
     cosDoc.close();
    } catch (IOException e) {
    }
   }
}

private void closePDDocument(PDDocument pdDoc) {
   if (pdDoc != null) {
    try {
     pdDoc.close();
    } catch (IOException e) {
    }
   }
}