轉載出處：http://blog.csdn.net/csh624366188/article/details/6683757

在頁面上顯示各種文檔中的內容。在servlet中的邏輯

word：?

BufferedInputStream bis = null;
??URL url = null;
??HttpURLConnection httpUrl = null; // 建立鏈接
??url = new URL(urlReal);
??httpUrl = (HttpURLConnection) url.openConnection();// 連接指定的資源
??httpUrl.connect();// 獲取網絡輸入流
??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; // 建立鏈接
??url = new URL(urlReal);
??httpUrl = (HttpURLConnection) url.openConnection();// 連接指定的資源
??httpUrl.connect();// 獲取網絡輸入流
??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);// 獲得一個sheet
???content.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; // 建立鏈接
??url = new URL(urlReal);
??httpUrl = (HttpURLConnection) url.openConnection();// 連接指定的資源
??httpUrl.connect();// 獲取網絡輸入流
??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; // 建立鏈接
??url = new URL(urlReal);
??httpUrl = (HttpURLConnection) url.openConnection();// 連接指定的資源
??httpUrl.connect();// 獲取網絡輸入流
??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; // 建立鏈接
??url = new URL(urlReal);
??httpUrl = (HttpURLConnection) url.openConnection();// 連接指定的資源
??httpUrl.connect();// 獲取網絡輸入流
??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();

總結

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