本文通过开源pdfbox和poi进行处理多种文件格式的文本读入

1.需要的jar的maven坐标：

<dependency><groupId>org.apache.pdfbox</groupId><artifactId>pdfbox</artifactId><version>2.0.2</version></dependency><!--  ppt,xls,docx,pptx,xlsx--><dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.14</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.14</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml-schemas</artifactId><version>3.14</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-scratchpad</artifactId><version>3.14</version></dependency><dependency><groupId>org.apache.xmlbeans</groupId><artifactId>xmlbeans</artifactId><version>2.6.0</version></dependency><dependency><groupId>dom4j</groupId><artifactId>dom4j</artifactId><version>1.6.1</version></dependency>

处理多种文件格式，详情见代码：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.text.NumberFormat;
import java.util.List;import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.text.PDFTextStripper;
import org.apache.poi.hslf.extractor.PowerPointExtractor;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.usermodel.Range;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.apache.poi.xslf.usermodel.XSLFSlideShow;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.openxmlformats.schemas.drawingml.x2006.main.CTRegularTextRun;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextBody;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextParagraph;
import org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape;
import org.openxmlformats.schemas.presentationml.x2006.main.CTShape;
import org.openxmlformats.schemas.presentationml.x2006.main.CTSlide;/**** @author yujian* @date   2016年10月12日* @version 0.0.1*/
public class FileFormat {/*** 用来读取doc文件的方法* @param filePath* @return* @throws Exception*/public static String getTextFromDoc(String filePath) throws Exception{StringBuilder sb = new StringBuilder();FileInputStream fis = new FileInputStream(new File(filePath));HWPFDocument doc = new HWPFDocument(fis);Range rang = doc.getRange();sb.append(rang.text());fis.close();return sb.toString();}/*** 用来读取docx文件* @param filePath* @return* @throws IOException* @throws Exception*/@SuppressWarnings("resource")public static String getTextFromDocx(String filePath) throws IOException {FileInputStream in = new FileInputStream(filePath);XWPFDocument doc = new XWPFDocument(in);XWPFWordExtractor extractor = new XWPFWordExtractor(doc);String text = extractor.getText();in.close();return text;}/*** 用来读取pdf文件* @param filePath* @return* @throws IOException*/public static String getTextFromPDF(String filePath) throws IOException{File input = new File(filePath);PDDocument pd = PDDocument.load(input);PDFTextStripper stripper = new PDFTextStripper();return stripper.getText(pd);}/*** 用来读取ppt文件* @param filePath* @return* @throws IOException*/public static String getTextFromPPT( String filePath) throws IOException{FileInputStream in = new FileInputStream(filePath);PowerPointExtractor extractor = new PowerPointExtractor(in);String content = extractor.getText();extractor.close();return content;}/*** 用来读取pptx文件* @param filePath* @return* @throws IOException*/public static String getTextFromPPTX( String filePath) throws IOException{String resultString = null;StringBuilder sb = new StringBuilder();FileInputStream in = new FileInputStream(filePath);try {XMLSlideShow xmlSlideShow = new XMLSlideShow(in);List<XSLFSlide> slides = xmlSlideShow.getSlides();for(XSLFSlide slide:slides){CTSlide rawSlide = slide.getXmlObject();CTGroupShape gs = rawSlide.getCSld().getSpTree();CTShape[] shapes = gs.getSpArray();for(CTShape shape:shapes){CTTextBody tb = shape.getTxBody();if(null==tb){continue;}CTTextParagraph[] paras = tb.getPArray();for(CTTextParagraph textParagraph:paras){CTRegularTextRun[] textRuns = textParagraph.getRArray();for(CTRegularTextRun textRun:textRuns){sb.append(textRun.getT());}}}}resultString = sb.toString();xmlSlideShow.close();} catch (Exception e) {e.printStackTrace();}return resultString;}/*** 用来读取xls* @param filePath* @return* @throws IOException*/public static String getTextFromxls(String filePath) throws IOException{FileInputStream in = new FileInputStream(filePath);StringBuilder content = new StringBuilder();HSSFWorkbook workbook = new HSSFWorkbook(in);for(int sheetIndex=0;sheetIndex<workbook.getNumberOfSheets();sheetIndex++){HSSFSheet sheet = workbook.getSheetAt(sheetIndex);for(int rowIndex=0;rowIndex<=sheet.getLastRowNum();rowIndex++){HSSFRow row = sheet.getRow(rowIndex);if(row==null){continue;}for(int cellnum=0;cellnum<row.getLastCellNum();cellnum++){HSSFCell cell = row.getCell(cellnum);if(cell!=null){content.append(cell.getRichStringCellValue().getString()+" ");}}}}workbook.close();return content.toString();}/*** 用来读取xlsx文件* @param filePath* @return* @throws IOException*/public static String getTextFromxlsx(String filePath) throws IOException{StringBuilder content = new StringBuilder();XSSFWorkbook workbook = new XSSFWorkbook(filePath);for(int sheet=0;sheet<workbook.getNumberOfSheets();sheet++){if(null!=workbook.getSheetAt(sheet)){XSSFSheet aSheet =workbook.getSheetAt(sheet);for(int row=0;row<=aSheet.getLastRowNum();row++){if(null!=aSheet.getRow(row)){XSSFRow aRow = aSheet.getRow(row);for(int cell=0;cell<aRow.getLastCellNum();cell++){if(null!=aRow.getCell(cell)){XSSFCell aCell = aRow.getCell(cell);if(convertCell(aCell).length()>0){content.append(convertCell(aCell));}}content.append(" ");}}}}}workbook.close();return content.toString();}private static String convertCell(Cell cell){NumberFormat formater = NumberFormat.getInstance();formater.setGroupingUsed(false);String cellValue="";if(cell==null){return cellValue;}switch(cell.getCellType()){case HSSFCell.CELL_TYPE_NUMERIC:cellValue = formater.format(cell.getNumericCellValue());break;case HSSFCell.CELL_TYPE_STRING:cellValue = cell.getStringCellValue();break;case HSSFCell.CELL_TYPE_BLANK:cellValue = cell.getStringCellValue();break;case HSSFCell.CELL_TYPE_BOOLEAN:cellValue = Boolean.valueOf(cell.getBooleanCellValue()).toString();break;case HSSFCell.CELL_TYPE_ERROR:cellValue = String.valueOf(cell.getErrorCellValue());break;default:cellValue="";}return cellValue.trim();}
}