POI 设置

2023-12-15 12:36:15

　　

FileOutputStream fos = new FileOutputStream("D:\\15.xls");
HSSFWorkbook wb = new HSSFWorkbook();
/**
* ========================================================
* 设置cell宽度
* 通过sheet 对象，setColumnWidth设置cell的宽度
* ========================================================
*/
HSSFSheet sheet = wb.createSheet("sheet1");
// api 段信息 Set the width (in units of 1/256th of a character width)
sheet.setColumnWidth(0, 20 * 256);
/**
* ========================================================
* 设置行高度
* 通过row 对象设置行高
* ========================================================
*/
HSSFRow row = sheet.createRow(0);
//heightInPoints 设置的值永远是height属性值的20倍
row.setHeightInPoints(20);
HSSFRow row1 = sheet.createRow(5);
// Set the row's height or set to ff (-1) for undefined/default-height.
// Set the height in "twips" or
// 1/20th of a point.
row1.setHeight((short) (25 * 20));
HSSFCell cell = row.createCell(0);
cell.setCellValue("a1b2c3d4e5f6g7h8i9");
//设置默认宽度、高度值
HSSFSheet sheet2 = wb.createSheet("sheet2");
sheet2.setDefaultColumnWidth(20);
sheet2.setDefaultRowHeightInPoints(20);
//格式化单元格日期信息
HSSFDataFormat dataFormat = wb.createDataFormat();
short dataformat = dataFormat.getFormat("yyyy-mm-dd HH:MM");
HSSFCellStyle style = wb.createCellStyle();
style.setDataFormat(dataformat);
HSSFCell cell2 = sheet2.createRow(0).createCell(0);
cell2.setCellValue(new Date());
cell2.setCellStyle(style);
wb.write(fos);
fos.close();