WritableFont headFont = new WritableFont(WritableFont.TIMES, 14,WritableFont.BOLD); //设置标题，字号14，加粗  
WritableFont countents = new WritableFont(WritableFont.TIMES,12); // 设置单元格内容，字号12WritableCellFormat cell = new WritableCellFormat(contentFont);cell.setAlignment(jxl.format.Alignment.CENTRE);// 单元格内容水平居中cell.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);// 单元格内容垂直居中cell.setBorder(Border.ALL, BorderLineStyle.THIN,jxl.format.Colour.BLACK); // 边框// Border.ALL:上下左右都设置边框; BorderLineStyle.THIN: 细边框; jxl.format.Colour.BLACK: 黑颜色 cell.setWrap(true);//是否换行   WritableSheet sheet = book.createSheet("公文检索", 0); //创建一个新sheetsheet.setColumnView(0, 80); //第1列宽sheet.setColumnView(1, 80); //第2列宽 sheet.setRowView(i+1, 400);//某行的行高，一般用在循环中//合并单元格sheet.mergeCells(3,0,4,0);//(列，行，列，行) //设置页边距(0.1d=0.26cm)sheet.getSettings().setBottomMargin(0.7d);sheet.getSettings().setTopMargin(0.7d);sheet.getSettings().setLeftMargin(0.75d);sheet.getSettings().setRightMargin(0.75d);//设置打印方向为 横向，不设置为纵向sheet.setPageSetup(PageOrientation.LANDSCAPE.LANDSCAPE,PaperSize.A4,0.5d,0.5d); //设置页码，3个参数位置分别对应：左边、中间、右边 sheet.setFooter("", "&P", "");//设置冻结单元格，下拉时第一列固定sheet.getSettings().setVerticalFreeze(1);  //设置是否显示行数列数编号sheet.getSettings().setPrintHeaders(true);