HSSFCell 设置样式

1、遍历workbook
// 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 j = sheet.getFirstRowNum(); j < sheet.getLastRowNum(); j++) {  
    HSSFRow row = sheet.getRow(j);  
    if (row != null) {  
      // 。。。操作}  
    }  
  }  
}  
// 目标文件  
FileOutputStream fos = new FileOutputStream(objectPath);  
// 写文件  
wb.write(fos);  
fos.close(); 


2、得到列和单元格
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
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
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);     
cell.getNumericCellValue(); 



5、设置列宽、行高
sheet.setColumnWidth((short)column,(short)width);     
row.setHeight((short)height); 



6、添加区域，合并单元格
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
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
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
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
// 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));