Servlet端下载txt和excel文件实例

1.下载excel文件：

import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;

public class ExcelDownload extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		// 生成xls
		try {
			Date d = new Date();
			SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_kkmmss ");
			String random = sdf.format(d);
			String targetFile = random + ".excel";
			response.setContentType("application/vnd.ms-excel");
			response.addHeader("Content-Disposition",
					"attachment;   filename=\"" + targetFile + "\"");
			OutputStream os = response.getOutputStream();
			WritableWorkbook wwb = Workbook.createWorkbook(os);
			// 新建一张表
			WritableSheet wsheet = wwb.createSheet("record", 0);
			// 设置表头
			Label label = new Label(0, 0, "");
			wsheet.addCell(label);
			label = new Label(0, 0, "会员姓名");
			wsheet.addCell(label);
			label = new Label(1, 0, "卡号");
			wsheet.addCell(label);
			label = new Label(2, 0, "联系地址");
			wsheet.addCell(label);
			label = new Label(3, 0, "邮编");
			wsheet.addCell(label);
			label = new Label(4, 0, "联系电话");
			wsheet.addCell(label);
			label = new Label(5, 0, "手机");
			wsheet.addCell(label);
			label = new Label(6, 0, "Email");
			wsheet.addCell(label);
			label = new Label(7, 0, "性别");
			wsheet.addCell(label);

			wwb.write();
			wwb.close();
			os.close();
			response.flushBuffer();

		} catch (Exception e) {
			System.out.println("生成信息表(Excel格式)时出错：");
			e.printStackTrace();
		}

	}
}

 2.生成txt文件:

import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;

public class TxtDownLoad extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		// 生成txt
		try {
			Date d = new Date();
			SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_kkmmss ");
			String random = sdf.format(d);
			String targetFile = random + ".csv";
			response.setContentType("application/x-msdownload");
			response.addHeader("Content-Disposition",
					"attachment;   filename=\"" + targetFile + "\"");
			OutputStream os = response.getOutputStream();
			String temp = "你好啊！";
			os.write(temp.getBytes());
			os.close();
			response.flushBuffer();

		} catch (Exception e) {
			System.out.println("生成txt文件时出错：");
			e.printStackTrace();
		}

	}
}

 

 

注：这里生成excel时，用到了jxl包，是专门用于java对于Excel文件格式的API.