java 读取并保存excel中的图片

 

    / * 保存excel中的图片(以文件形式保存，或者存入数据库) 
     * 
     * basePath:应用所在路径,附件存放路径:
     * 参数：is是上传的附件文件流
     */
    public void saveSheetImgByFile(String basePath,InputStream is) throws ParseException {
        FileOutputStream os = null;
        try {
            Workbook wbk = Workbook.getWorkbook(is);
            //建文件目录
            File mkFile = new File(basePath);
            if (!mkFile.exists() && !mkFile.isDirectory()) {
                mkFile.mkdirs();
            }
            // 循环所有sheet
            for (int k = 0; k < wbk.getNumberOfSheets(); k++) {
                Sheet sheet = wbk.getSheet(k);
                // 共有多少行
                int imgNumber = sheet.getNumberOfImages();// 获得sheet所包含的图片数
                // 循环sheet的所有图片
                for (int i = 0; i < imgNumber; i++) {
                    Image image = sheet.getDrawing(i);
                    byte[] imageData = image.getImageData();
                    String fileName = image.getImageFile().getName().trim()
                            + ".jpg";
                    File file = new File(basePath+"/" + fileName);

                    os = new FileOutputStream(file);// 建立一个上传文件的输出流
                    os.write(imageData, 0, imageData.length);// 将文件写入服务器
                }
            }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            try {
                if (os != null) {
                    os.close();
                }
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    /*
     * 将excel图片文件保存到数据库
     */
    public void saveSheetImgByDB(InputStream is) throws ParseException,
            ClassNotFoundException, SQLException, IOException {
        Class.forName("com.mysql.jdbc.Driver");
        Connection conn = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/数据库名?characterEncoding=utf8", "root", "root");
        String INSERT_PICTURE = "insert into t_mypicture(name, photo) values (?, ?)";
        PreparedStatement ps = null;
        FileOutputStream os = null;
        try {
            Workbook wbk = Workbook.getWorkbook(is);
            // 循环所有sheet
            for (int k = 0; k < wbk.getNumberOfSheets(); k++) {
                Sheet sheet = wbk.getSheet(k);
                // 共有多少行
                int imgNumber = sheet.getNumberOfImages();// 获得sheet所包含的图片数
                // 循环sheet的所有图片
                for (int i = 0; i < imgNumber; i++) {
                    Image image = sheet.getDrawing(i);
                    byte[] imageData = image.getImageData();
                    String fileName = image.getImageFile().getName().trim()
                            + ".jpg";

                    conn.setAutoCommit(false);
                    ps = conn.prepareStatement(INSERT_PICTURE);
                    ps.setString(1, fileName);
                    ps.setBytes(2, imageData);
                    ps.executeUpdate();
                    conn.commit();
                }
            }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            try {
                if (os != null) {
                    os.close();
                }
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

2.action方法调用:

ImportExcelUtil ieu = new ImportExcelUtil();
        ExcelForm excelForm = (ExcelForm) form;
        FormFile file = excelForm.getExcelFile();
        

        // 附件方式保存
        String basePath = request.getSession().getServletContext().getRealPath(
        "/")+"excelFile";
        try {
            ieu.saveSheetImgByFile(basePath,file.getInputStream());
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

// 数据库方式保存
        try {
            ieu.saveSheetImgByDB(file.getInputStream());
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

 转载自：http://blog.youkuaiyun.com/LIUJIMMY/archive/2010/01/25/5253978.aspx