提取Office以及PDF里的文字

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import org.apache.pdfbox.pdfparser.PDFParser;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.util.PDFTextStripper;

import com.doc.manager.util.IDocParser;

/**
* parse pdf documents
* */
public class PdfParser implements IDocParser {
@Override
public String parser(String filePath){
if(filePath==null)
return null;
File file=new File(filePath);
if(!file.exists()){
return null;
}
return parser(file);
}

@Override
public String parser(File file){
FileInputStream fileInputStream=null;
try {
fileInputStream = new FileInputStream(file);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
return null;
}
PDFParser parser;
String reString=null;
try {
parser = new PDFParser(fileInputStream);
parser.parse();
PDDocument pdDocument=parser.getPDDocument();
PDFTextStripper pdfTextStripper=new PDFTextStripper();
reString=pdfTextStripper.getText(pdDocument);
} catch (IOException e) {
e.printStackTrace();
}
return reString.trim();
}

}

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import org.apache.poi.hslf.extractor.PowerPointExtractor;
import org.apache.poi.hslf.usermodel.HSLFSlideShowImpl;
import org.apache.poi.hssf.extractor.ExcelExtractor;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.extractor.WordExtractor;
import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.xslf.XSLFSlideShow;
import org.apache.poi.xslf.extractor.XSLFPowerPointExtractor;
import org.apache.poi.xssf.extractor.XSSFExcelExtractor;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.xmlbeans.XmlException;

import com.doc.manager.util.IDocParser;

/**
* parse office, not for wps_office
* */
public class OfficeParser implements IDocParser {
private final String WORD_2003_AND_BEFORE="doc";
private final String WORD_2007_AND_LATER="docx";
private final String EXCEL_2003_AND_BEFORE="xls";
private final String EXCEL_2007_AND_LATER="xlsx";
private final String PPT_2003_AND_BEFORE="ppt";
private final String PPT_2007_AND_LATER="pptx";
@Override
public String parser(String filePath) {
if(filePath==null)
return null;
File file=new File(filePath);
if(!file.exists())
return null;
return parser(file);
}

@Override
public String parser(File file) {
String filePath=file.getAbsolutePath();
String fileExt=filePath.substring(filePath.lastIndexOf(".")+1);
if(fileExt.equalsIgnoreCase(WORD_2003_AND_BEFORE))
return parseWord2003AndBefore(file);
if(fileExt.equalsIgnoreCase(WORD_2007_AND_LATER))
return parseWord2007AndLater(file);
if(fileExt.equalsIgnoreCase(EXCEL_2003_AND_BEFORE))
return parseExcel2003AndBefore(file);
if(fileExt.equalsIgnoreCase(EXCEL_2007_AND_LATER))
return parseExcel2007AndLater(file);
if(fileExt.equalsIgnoreCase(PPT_2003_AND_BEFORE))
return parsePPT2003AndBefore(file);
if(fileExt.equalsIgnoreCase(PPT_2007_AND_LATER))
return parsePPT2007AndLater(file);
else{
System.out.println("不支持的文件类型");
}
return null;
}
/**
* 解析word2003及之前版本
* */
public String parseWord2003AndBefore(File file){
String text=null;
WordExtractor extractor=null;
try {
HWPFDocument document=new HWPFDocument(new FileInputStream(file));
extractor=new WordExtractor(document);
text=extractor.getText();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(extractor!=null)
try {
extractor.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return text.trim();
}
/**
* 解析word2007及以后版本
* */
public String parseWord2007AndLater(File file){
String text=null;
try {
XWPFDocument document=new XWPFDocument(new FileInputStream(file));
XWPFWordExtractor extractor=new XWPFWordExtractor(document);
text=extractor.getText();
extractor.close();
} catch (IOException e) {
e.printStackTrace();
}
return  text.trim();
}
/**
* 解析excel2003及之前版本
* */
public String parseExcel2003AndBefore(File file){
String text=null;
try {
FileInputStream inp = new FileInputStream(file);
HSSFWorkbook wb = new HSSFWorkbook(new POIFSFileSystem(inp));
ExcelExtractor extractor = new ExcelExtractor(wb);
extractor.setFormulasNotResults(true);
extractor.setIncludeSheetNames(false);
text = extractor.getText();
extractor.close();
inp.close();
} catch (IOException e) {
e.printStackTrace();
}
return text.trim();
}
/**
* 解析excel2007及以后版本
* */
public String parseExcel2007AndLater(File file){
String text=null;
try {
FileInputStream inp = new FileInputStream(file);
XSSFWorkbook wb = new XSSFWorkbook(inp);
XSSFExcelExtractor extractor=new XSSFExcelExtractor(wb);
extractor.setFormulasNotResults(true);
extractor.setIncludeSheetNames(false);
text = extractor.getText();
extractor.close();
inp.close();
} catch (IOException e) {
e.printStackTrace();
}
return  text.trim();
}
/**
* 解析powerpoint2003及之前版本
* */
public String parsePPT2003AndBefore(File file){
String text=null;
try {
FileInputStream inp = new FileInputStream(file);
HSLFSlideShowImpl ppt=new HSLFSlideShowImpl(inp);
PowerPointExtractor extractor=new PowerPointExtractor(ppt);
text=extractor.getText();
extractor.close();
inp.close();
} catch (IOException e) {
e.printStackTrace();
}
return text.trim();
}
/**
* 解析powerpoint2007及以后版本
* */
public String parsePPT2007AndLater(File file){
String text=null;
try {
FileInputStream inp = new FileInputStream(file);
XSLFSlideShow slideshow=new XSLFSlideShow(file.getAbsolutePath());
XSLFPowerPointExtractor extractor=new XSLFPowerPointExtractor(slideshow);
text=extractor.getText();
extractor.close();
inp.close();
} catch (IOException e) {
e.printStackTrace();
} catch (OpenXML4JException e) {
e.printStackTrace();
} catch (XmlException e) {
e.printStackTrace();
}
return  text.trim();
}
}