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java 中 excel生成并文件下载保存到本地

2017-03-03 17:48 495 查看
servlet类
package com.dragon.action;
import Java.io.IOException;
import java.io.OutputStream;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
public class ExcelServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public ExcelServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//  response.setContentType("text/html");
//  PrintWriter out = response.getWriter();
//  out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
//  out.println("<HTML>");
//  out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
//  out.println("  <BODY>");
//  out.print("    This is ");
//  out.print(this.getClass());
//  out.println(", using the GET method");
//  out.println("  </BODY>");
//  out.println("</HTML>");
//  out.flush();
//  out.close();
this.doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("application/vnd.ms-excel");
OutputStream out = response.getOutputStream();
//报头用于提供一个推荐的文件名，并强制浏览器显示保存对话框
//attachment表示以附件方式下载。如果要在页面中打开，则改为 inline
response.setHeader("Content-Disposition", "attachment; filename=TestExcel1.xls ");
//创建workbook工作薄
Workbook workbook = new HSSFWorkbook();
//创建工作表
Sheet sheet = workbook.createSheet("用户信息");
//创建第二个工作薄
Sheet sheet2 = workbook.createSheet();
//为工作薄起名字
workbook.setSheetName(1, "口袋里的小龙");
//设置单元格样式
HSSFCellStyle hssfCellStyle = (HSSFCellStyle) workbook.createCellStyle();
hssfCellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);//居中显示
hssfCellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//纵向居中
//创建行
Row row = sheet.createRow(0);
//创建单元格
Cell cell = row.createCell(0);
//设置第一行第一格的值
cell.setCellValue("姓名");
//设置单元格的文本居中显示
cell.setCellStyle(hssfCellStyle);
//创建单元格
Cell cell1 = row.createCell(1);
//设置第一行第一格的值
cell1.setCellValue("性别");
cell1.setCellStyle(hssfCellStyle);
//创建单元格
Cell cell2 = row.createCell(2);
//设置第一行第一格的值
cell2.setCellValue("年龄");
cell2.setCellStyle(hssfCellStyle);
//创建单元格
Cell cell3 = row.createCell(3);
//设置第一行第一格的值
cell3.setCellValue("家庭住址");
cell3.setCellStyle(hssfCellStyle);
for (int i = 1; i <= 5; i++) {
//创建行
Row rows = sheet.createRow(i);
//创建单元格
Cell cells = rows.createCell(0);
//设置第一行第一格的值
cells.setCellValue("张三"+i);
//创建单元格
Cell cell1s = rows.createCell(1);
//设置第一行第一格的值
cell1s.setCellValue("男");
//创建单元格
Cell cell2s = rows.createCell(2);
//设置第一行第一格的值
cell2s.setCellValue(18+i);
//创建单元格
Cell cell3s = rows.createCell(3);
//设置第一行第一格的值
cell3s.setCellValue("家庭住址"+i);
}
workbook.write(out);
System.out.println("数据写入成功！");
out.flush();
out.close();
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}

index.jsp页面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="Th
aafe
is is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>

<body>
<form action="servlet/ExcelServlet" method="post">
<input type="submit" value="测试"></input>
</form>
</body>
</html>
转载自http://blog.csdn.net/koudailidexiaolong/article/details/45913207
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