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  • excel使用poi操作。

    • String real_path = request.getSession().getServletContext().getRealPath("/");//获取文件路径,我是通过模板进行导出,在项目中拿到模板
    • if (!real_path.endsWith("/")) {
    •   real_path = real_path + "/";
    • }
    • String r_url = real_path + "excel/bixuan.xls";//拼接好文件的完整路径
    • String excelPath = r_url;
    • String sheetName = "Sheet1";//获取到不同的sheet页。
    • String sheetName1 = "Sheet2";

    //拿到文件路径后创建excel对象

    • File f = new File(excelPath );
    • FileInputStream fis =fis = new FileInputStream(f);
    • HSSFWorkbook wb =wb = new HSSFWorkbook(fis);
    • HSSFWorkbook wb = util.createWorkBook(excelPath);
    • HSSFSheet sheet = wb.getSheet(sheetName)
    • HSSFSheet sheet1 = wb.getSheet(sheetName1)


    //设置样式

    • HSSFCellStyle style = wb.createCellStyle();
    • style.setWrapText(true);
    • style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
    • style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

    //设置边框

    • style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //下边框
    • style.setBorderLeft(HSSFCellStyle.BORDER_THIN);//左边框
    • style.setBorderTop(HSSFCellStyle.BORDER_THIN);//上边框
    • style.setBorderRight(HSSFCellStyle.BORDER_THIN);//右边框

    //设置字体

    • HSSFFont font2 = wb.createFont();
    • font2.setFontName("仿宋_GB2312"); 
    • font2.setFontHeightInPoints((short) 9);//字体大小
    • style.setFont(font2);
    • sheet.protectSheet("123456");//设置密码,保护单元格
    • sheet1.protectSheet("123456");
    • style.setWrapText(true);//一定要有这个,否则设置单元格密码失效

    //在excel中插入的行

    • sheet.shiftRows(len-1, len+20, find.size()-5, true, false);//参数详解  1从这行行开始移动,2到那行结束 3移动的数量 

    //合并单元格后,边框样式对合并的单元格不起作用,需要用下面代码处理

    • CellRangeAddress cellRangeAddress = new CellRangeAddress(len-1,len-1,3,5);//参数,合并单元格的开始行数,与结束行数。
    • int addMergedRegion = sheet.addMergedRegion(cellRangeAddress);//合并单元格
    • sheet.getRow(len-1).getCell(2).setCellStyle(style);设置样式

    //不同浏览器对导出的excel有不同的编码,做如下处理

    • if(isMSBrowser(request)){
    • xlsName = java.net.URLEncoder.encode(xlsName, "utf-8") + ".xls";
    • } else {
    • xlsName = new String(xlsName.getBytes("utf-8"), "iso-8859-1") + ".xls";
    • }

    //判断是不是ie浏览器

    • public boolean isMSBrowser(HttpServletRequest request) {
    • String[] IEBrowserSignals = {"MSIE", "Trident", "Edge"};
    • String userAgent = request.getHeader("User-Agent");
    • for (String signal : IEBrowserSignals) {
    • if (userAgent.contains(signal)){
    • return true;
    • }
    • }
    • return false;
    • }

    //封装一下对合并单元格的边框处理

    • public void setBorderStyle(int border, CellRangeAddress region, HSSFSheet sheet, HSSFWorkbook wb){
    • RegionUtil.setBorderBottom(border, region, sheet, wb);//下边框
    • RegionUtil.setBorderLeft(border, region, sheet, wb);//左边框
    • RegionUtil.setBorderRight(border, region, sheet, wb); //右边框
    • RegionUtil.setBorderTop(border, region, sheet, wb); //上边框
    • }

    借鉴博客:https://www.cnblogs.com/staticxy/p/6122336.html

        https://www.cnblogs.com/dcncy/p/8041657.html

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  • 原文地址:https://www.cnblogs.com/zl96291/p/10213607.html
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