在页面上显示各种文档中的内容。在servlet中的逻辑

word：

BufferedInputStream bis = null;

URL url = null;HttpURLConnection httpUrl = null; // 建立链接url = new URL(urlReal);httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源httpUrl.connect();// 获取网络输入流bis = new BufferedInputStream(httpUrl.getInputStream());

String bodyText = null;

WordExtractor ex = new WordExtractor(bis);bodyText = ex.getText();response.getWriter().write(bodyText);

excel：

BufferedInputStream bis = null;

URL url = null;HttpURLConnection httpUrl = null; // 建立链接url = new URL(urlReal);httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源httpUrl.connect();// 获取网络输入流bis = new BufferedInputStream(httpUrl.getInputStream());

content = new StringBuffer();

HSSFWorkbook workbook = new HSSFWorkbook(bis);for (int numSheets = 0; numSheets < workbook.getNumberOfSheets(); numSheets++) { HSSFSheet aSheet = workbook.getSheetAt(numSheets);// 获得一个sheetcontent.append("/n");if (null == aSheet) { continue;}for (int rowNum = 0; rowNum <= aSheet.getLastRowNum(); rowNum++) { content.append("/n");HSSFRow aRow = aSheet.getRow(rowNum);if (null == aRow) { continue;}for (short cellNum = 0; cellNum <= aRow.getLastCellNum(); cellNum++) { HSSFCell aCell = aRow.getCell(cellNum);if (null == aCell) { continue;}if (aCell.getCellType() == HSSFCell.CELL_TYPE_STRING) { content.append(aCell.getRichStringCellValue().getString());} else if (aCell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC) { boolean b = HSSFDateUtil.isCellDateFormatted(aCell);if (b) { Date date = aCell.getDateCellValue();SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");content.append(df.format(date));}}}}}response.getWriter().write(content.toString());

ppt：

BufferedInputStream bis = null;

URL url = null;HttpURLConnection httpUrl = null; // 建立链接url = new URL(urlReal);httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源httpUrl.connect();// 获取网络输入流bis = new BufferedInputStream(httpUrl.getInputStream());

StringBuffer content = new StringBuffer("");

SlideShow ss = new SlideShow(new HSLFSlideShow(bis));Slide[] slides = ss.getSlides();for (int i = 0; i < slides.length; i++) { TextRun[] t = slides[i].getTextRuns();for (int j = 0; j < t.length; j++) { content.append(t[j].getText());}content.append(slides[i].getTitle());}response.getWriter().write(content.toString());

pdf：

BufferedInputStream bis = null;

URL url = null;HttpURLConnection httpUrl = null; // 建立链接url = new URL(urlReal);httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源httpUrl.connect();// 获取网络输入流bis = new BufferedInputStream(httpUrl.getInputStream());

PDDocument pdfdocument = null;

PDFParser parser = new PDFParser(bis);parser.parse();pdfdocument = parser.getPDDocument();ByteArrayOutputStream out = new ByteArrayOutputStream();OutputStreamWriter writer = new OutputStreamWriter(out);PDFTextStripper stripper = new PDFTextStripper();stripper.writeText(pdfdocument.getDocument(), writer);writer.close();byte[] contents = out.toByteArray();

String ts = new String(contents);

response.getWriter().write(ts);

txt：

BufferedReader bis = null;

URL url = null;HttpURLConnection httpUrl = null; // 建立链接url = new URL(urlReal);httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源httpUrl.connect();// 获取网络输入流bis = new BufferedReader( new InputStreamReader(httpUrl.getInputStream()));

StringBuffer buf=new StringBuffer();

String temp;while ((temp = bis.readLine()) != null) { buf.append(temp);response.getWriter().write(temp);if(buf.length()>=1000){ break;}}bis.close();