POI 搞excell

1、遍历workbook 代码 // load源文件 POIFSFileSystem fs = new POIFSFileSystem( new FileInputStream(filePath)); HSSFWorkbook wb = new HSSFWorkbook(fs); for ( int i = 0 ; i < wb.getNumberOfSheets(); i++) { HSSFSheet sheet = wb.getSheetAt(i); for ( int i = sheet.getFirstRowNum(); i < sheet.getLastRowNum(); i ++) { HSSFRow row = sheet.getRow(i); if (row != null ) { 。。。操作} } } // 目标文件 FileOutputStream fos = new FileOutputStream(objectPath); //写文件 swb.write(fos); fos.close(); 2、得到列和单元格 代码 HSSFRow row = sheet.getRow(i); HSSFCell cell = row.getCell(( short ) j); 3、设置sheet名称和单元格内容为中文 代码 wb.setSheetName(n, "中文" ,HSSFCell.ENCODING_UTF_16); cell.setEncoding(( short ) 1 ); cell.setCellValue( "中文" ); 4、单元格内容未公式或数值，可以这样读写 代码 cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC); cell.getNumericCellValue() 5、设置列宽、行高 代码 sheet.setColumnWidth(( short )column,( short )width); row.setHeight(( short )height); 6、添加区域，合并单元格 代码 Region region = new Region(( short )rowFrom,( short )columnFrom,( short )rowTo,( short )columnTo); sheet.addMergedRegion(region); //得到所有区域 sheet.getNumMergedRegions() 7、常用方法 根据单元格不同属性返回字符串数值 代码 public String getCellStringValue(HSSFCell cell) { String cellValue = "" ; switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_STRING: cellValue = cell.getStringCellValue(); if (cellValue.trim().equals( "" )||cellValue.trim().length()<= 0 ) cellValue= " " ; break ; case HSSFCell.CELL_TYPE_NUMERIC: cellValue = String.valueOf(cell.getNumericCellValue()); break ; case HSSFCell.CELL_TYPE_FORMULA: cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC); cellValue = String.valueOf(cell.getNumericCellValue()); break ; case HSSFCell.CELL_TYPE_BLANK: cellValue= " " ; break ; case HSSFCell.CELL_TYPE_BOOLEAN: break ; case HSSFCell.CELL_TYPE_ERROR: break ; default : break ; } return cellValue; } 8、常用单元格边框格式 虚线HSSFCellStyle.BORDER_DOTTED 实线HSSFCellStyle.BORDER_THIN 代码 public static HSSFCellStyle getCellStyle( short type) { HSSFWorkbook wb = new HSSFWorkbook(); HSSFCellStyle style = wb.createCellStyle(); style.setBorderBottom(type); //下边框 style.setBorderLeft(type); //左边框 style.setBorderRight(type); //右边框 style.setBorderTop(type); //上边框 return style; } 9、设置字体和内容位置 代码 HSSFFont f = wb.createFont(); f.setFontHeightInPoints(( short ) 11 ); //字号 f.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL); //加粗 style.setFont(f); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //左右居中 style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); //上下居中 style.setRotation( short rotation); //单元格内容的旋转的角度 HSSFDataFormat df = wb.createDataFormat(); style1.setDataFormat(df.getFormat( "0.00%" )); //设置单元格数据格式 cell.setCellFormula(string); //给单元格设公式 style.setRotation( short rotation); //单元格内容的旋转的角度 cell.setCellStyle(style); 10、插入图片 论坛里看到的 代码 //先把读进来的图片放到一个ByteArrayOutputStream中，以便产生ByteArray ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream(); BufferedImage bufferImg = ImageIO.read(new File("ok.jpg")); ImageIO.write(bufferImg,"jpg",byteArrayOut); //读进一个excel模版 FileInputStream fos = new FileInputStream(filePathName+"/stencil.xlt"); fs = new POIFSFileSystem(fos); //创建一个工作薄 HSSFWorkbook wb = new HSSFWorkbook(fs); HSSFSheet sheet = wb.getSheetAt(0); HSSFPatriarch patriarch = sheet.createDrawingPatriarch(); HSSFClientAnchor anchor = new HSSFClientAnchor(0,0,1023,255,(short) 0,0,(short)10,10); patriarch.createPicture(anchor , wb.addPicture(byteArrayOut.toByteArray(),HSSFWorkbook.PICTURE_TYPE_JPEG));

最后更新：2006-10-30 20:12