java处理Excel相关笔记

        String name = file.getFilename(); 
           name = name.replaceAll("(&|=|,)", "");
           response.setHeader("Content-Disposition", "Attachment; Filename=" + name);
           response.setContentType(file.getContentType());
           IOUtils.copy(file.getInputStream(), response.getOutputStream());
          response.flushBuffer();

复制代码

            // 构建输出流
            response.reset();
            final String attachmentHeader = "Attachment; Filename*=utf-8''"
                    + URLEncoder.encode(project.getName() + ".xls", "UTF-8").replaceAll("\\+", "%20");
            response.setHeader("Content-disposition", attachmentHeader);
            response.setContentType("application/msexcel");
            // 生成工作表
            WritableWorkbook wwb = Workbook.createWorkbook(response.getOutputStream());
            WritableSheet sheet = wwb.createSheet("任务列表", 1);
            // 格式化文本
            WritableFont font1 = new WritableFont(WritableFont.TIMES, 12, WritableFont.BOLD);
            WritableCellFormat format1 = new WritableCellFormat(font1);
            format1.setAlignment(jxl.format.Alignment.CENTRE);
            format1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); 
            // 表格大小       
            sheet.setColumnView(0, 20); 
            // 表头
            sheet.addCell(new Label(0, 0, "任务名称", format1)); 
            // 任务列表
            SimpleDateFormat sdf = new SimpleDateFormat("MM/dd HH:mm");
            for (int i = 1; i <= taskList.size(); i++) {
                ProjectTask pt = taskList.get(i - 1);
                sheet.addCell(new Label(0, i, pt.getName(), format2));
             } 
            // 关闭输出流
            wwb.write();
            wwb.close(); 

            //初始化工作表输出流
            String title="工程项目导出";
            response.setContentType("application/vnd.ms-excel"); 
            response.setHeader("Content-disposition", "attachment;filename="+new String(title.getBytes("GB2312"),"ISO8859_1") +".xls"); 
                     //标题有中文必须转码 ，attachment：显示另存为对话框inline：尝试用已知关联的程序打开。
            WritableWorkbook workbook;
            OutputStream ouputStream = response.getOutputStream(); 
            workbook = Workbook.createWorkbook(ouputStream); 
            WritableSheet sheet = workbook.createSheet("工程列表", 0); 
            sheet.setColumnView(0, 5); //设置宽度 
            jxl.write.WritableFont wfont = new jxl.write.WritableFont(WritableFont.createFont("宋体"), 10);//设置字体
            WritableCellFormat wc = new WritableCellFormat(wfont); 
            wc.setAlignment(Alignment.CENTRE); // 设置居中 
            wc.setBackground(jxl.format.Colour.LIGHT_GREEN); // 设置单元格的背景颜色 
            //工作表内容 - Label label
            sheet.addCell(new jxl.write.Label(0, 0,"序号",wc)); 
            sheet.addCell(new jxl.write.Label(13, 0,"任务状态",wc)); 
            for (int i = 1; i <= omProjectList.size(); i++) {
                OmProject omProject = omProjectList.get(i-1);
                sheet.addCell(new jxl.write.Number(0, i,i)); 
             sheet.addCell(new jxl.write.Label(1, i,omProject.getAcceptDate())); 
              }
            //关闭工作表输出流
            workbook.write();
            workbook.close();
            ouputStream.flush(); 
            ouputStream.close(); 

            FileInputStream inputStream = new FileInputStream(importFile);
            FileOutputStream outputStream = new FileOutputStream(filePath);
            byte[] buf = new byte[1024];
            int length = 0;
            while ((length = inputStream.read(buf)) != -1) {
                outputStream.write(buf, 0, length);
            }
            inputStream.close();
            outputStream.flush();

Workbook workbook =  Workbook.getWorkbook(new File(filePath)); 
Sheet[] sheets = workbook.getSheets();
            if (sheets != null && sheets.length > 0) {
                Sheet sheet = sheets[0];
                int rowSize = sheet.getRows(); 
                for (int j = 1; j < rowSize; j++) {
                Cell[] psCells = sheet.getRow(j); 
                String content = psCells[k].getContents();
      }