excel文件操作

1、搭建maven项目，引入：           

<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>

2、HSSFWorkbook用于低版本2003Excel，*.xls     XSSFWorkbook用于高版本2007+以上excel ，后缀 *.xlsx3、使用通用接口，通过抛出异常的方式，获取Workbook ,解析excel，如：            Workbook wb = null;try {wb = new HSSFWorkbook(new FileInputStream(new File("cellstyle.xlsx")));} catch (Exception e) {wb = new XSSFWorkbook(new FileInputStream(new File("cellstyle.xlsx")));}CreationHelper helper=wb.getCreationHelper();//设置单元格格式，日期格式，连接格式等               4、创建页    Sheet sheet=wb.createSheet();//excel页    CellStyle style1 = workbook.createCellStyle();//创建样式 如字体，背景等5、创建行    Row row=sheet.createRow(0);//行    row.setHeight((short) 800);//设置高度    row.setRowStyle(style);//设置行样式6、创建单元格    Cell cell=row.createCell(0);//单元格     cell.setCellStyle(style);//设置单元格样式7、CellStyle，Font样式使用样例：      XSSFFont font = workbook.createFont();font.setFontHeightInPoints((short) 30);font.setFontName("IMPACT");font.setItalic(true);font.setColor(HSSFColor.BRIGHT_GREEN.index);// Set font into styleXSSFCellStyle style = workbook.createCellStyle();style.setFont(font);8、运用公式举例              cell.setCellType(XSSFCell.CELL_TYPE_FORMULA);      cell.setCellFormula("SUM(C2:C3)");9、使用链接样例CreationHelper ch = workbook.getCreationHelper();XSSFFont hlinkfont = workbook.createFont();hlinkfont.setUnderline(XSSFFont.U_SINGLE);hlinkfont.setColor(HSSFColor.BLUE.index);XSSFCellStyle hlinkstyle = workbook.createCellStyle();hlinkstyle.setFont(hlinkfont);cell = spreadsheet.createRow(1).createCell( 1);cell.setCellValue("URL Link");XSSFHyperlink link = (XSSFHyperlink) ch.createHyperlink(Hyperlink.LINK_URL);link.setAddress("http://write.blog.csdn.net/postedit/77742671");cell.setHyperlink((XSSFHyperlink) link);cell.setCellStyle(hlinkstyle);

10、设置文字方向myStyle = workbook.createCellStyle();myStyle.setRotation((short) 30);