将数据到处到Excel

使用开源的POI组件，包含实现对Excal文件的创建和写入操作的类，使POI组件操作EXCEL文件的步骤

创建Excel的工作表，POI组件的HSSFWorkbook类提供了创建工作表的方法 public HSSFSheet
createSheet(String sheetname) //参数sheetname表示工作表的名称
创建表格的行，在保存之前创建行对象，该对象由工作表对象创建 public HSSFRow createRow(int
rownum) //参数rownum表示工作表中行对象的行号
创建表格的单元格，由HSSFRow类的createRow()方法创建 public HSSFCell createCell(int
columnIndex) //参数columnIndex表示单元格对象的列编号
写入单元格内容，常用的是String类型的字符串数据 public void setCellValue(String value)

index.jsp页面

<%@ page language=“java” import=“java.util.*” pageEncoding=“UTF-8”%>

    <title>用户注册</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="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
	<style type="text/css">
		table{
			font-size:12px;
			font-family: 隶书;
			color:gray;
			border: 1px green solid;
		}
		input{
			font-size:12px;
			font-family: 隶书;
			color:gray;
		}
	</style>
  </head>
  <body>
   	<form action="export" method="post">
   		<table align="center">
   			<tr>
   				<td>用户名：</td>
   				<td><input type="text" name="name" /></td>
   			</tr>
   			<tr>
   				<td>密码：</td>
   				<td><input type="password" name="pwd" /></td>
   			</tr>
   			<tr>
   				<td>性别：</td>
   				<td>
   					<input type="radio" name="sex" value="男" />男
   					<input type="radio" name="sex" value="女" />女
   				</td>
   			</tr>
   			<tr>
   				<td>年龄：</td>
   				<td><input type="text" name="age" /></td>
   			</tr>
   			<tr>
   				<td>Email：</td>
   				<td><input type="text" name="email" /></td>
   			</tr>
   			<tr>
   				<td colspan="2" align="center">
   					<input type="submit" value="导出到Excel" />
   				</td>
   			</tr>
   		</table>
   	</form>
  </body>
</html>

ExportServlet的Servlet类，doPost方法获得信息，POI组件将信息导出到POI组件

public class ExportServlet extends HttpServlet {

	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doPost(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		response.setContentType("application/vnd.ms-excel");//设置响应正文的MIME类型，该类型表示Excel
		//response.addHeader("Content-Disposition", "attachment;filename=logininfo.xls");
		String name = request.getParameter("name");
		String pwd =request.getParameter("pwd");
		String sex = request.getParameter("sex");
		String age = request.getParameter("age");
		String email = request.getParameter("email");
		ServletOutputStream out = response.getOutputStream();//响应输出流对象
		HSSFWorkbook wb = new HSSFWorkbook();				//创建Excel表格
		HSSFSheet  sheet = wb.createSheet("用户注册信息");	//创建工作簿
		sheet.setColumnWidth(4, 5000);						//设置列宽
		HSSFRow titleRow = sheet.createRow(0);				//创建Excel中的标题行
		HSSFCell titleCell1 =titleRow .createCell(0);		//在行中创建第1个单元格
		titleCell1.setCellValue("用户姓名");					//设置第1个单元格的值
		HSSFCell titleCell2= titleRow.createCell(1);		//在行中创建第2个单元格
		titleCell2.setCellValue("密码");						//设置第2个单元格的值
		HSSFCell titleCell3 =titleRow .createCell(2);		//在行中创建第3个单元格
		titleCell3.setCellValue("性别");						//设置第3个单元格的值
		HSSFCell titleCell4= titleRow.createCell(3);		//在行中创建第4个单元格
		titleCell4.setCellValue("年龄");						//设置第4个单元格的值
		HSSFCell titleCell5= titleRow.createCell(4);		//在行中创建第5个单元格
		titleCell5.setCellValue("Email");					//设置第5个单元格的值
		HSSFRow valueRow = sheet.createRow(1);				//创建第2行
		HSSFCell nameCell = valueRow.createCell(0);			//在第2行中创建单元格
		nameCell.setCellValue(name);
		HSSFCell pwdCell = valueRow.createCell(1);
		pwdCell.setCellValue(pwd);
		HSSFCell sexCell = valueRow.createCell(2);
		sexCell.setCellValue(sex);
		HSSFCell ageCell = valueRow.createCell(3);
		ageCell.setCellValue(age);
		HSSFCell emailCell = valueRow.createCell(4);
		emailCell.setCellValue(email);
		HSSFCellStyle cellStyle = wb.createCellStyle();
		wb.write(out);										//将响应流输入到Excel表格中
		out.flush();
		out.close();
	}

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

}

web.xml文件配置

<servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>ExportServlet</servlet-name>
    <servlet-class>com.lh.servlet.ExportServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>ExportServlet</servlet-name>
    <url-pattern>/export</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>

将数据到处到Excel

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