使用poi来实现excel文件的导入导出。使用struts2来做处理。
首先看jsp页面：
index.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>导入数据</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">
-->
</head>
<body>
<h1>
导入Excel数据
</h1>
<s:form action="import!importExcel.action" enctype="multipart/form-data" method="post">
导入Excel文件：<s:file name="excelFile"></s:file>
<br />
<s:submit value="导入"></s:submit>
</s:form>
</body>
</html>
action中的主要代码：原来依然是通过文件上传的原理来实现，只不过导入是将文件里的数据进行解析。
package com.chinasoft.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
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;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import com.chinasoft.dao.StudentDAO;
import com.chinasoft.entity.ExcelWorkSheet;
import com.chinasoft.entity.Student;
import com.opensymphony.xwork2.ActionSupport;
public class ImportExcelAction extends ActionSupport
{
private StudentDAO dao = new StudentDAO();
private File excelFile;
private String excelFileFileName;
private ExcelWorkSheet<Student> excelWorkSheet;
public File getExcelFile()
{
return excelFile;
}
public void setExcelFile(File excelFile)
{
this.excelFile = excelFile;
}
public String getExcelFileFileName()
{
return excelFileFileName;
}
public void setExcelFileFileName(String excelFileFileName)
{
this.excelFileFileName = excelFileFileName;
}
public ExcelWorkSheet<Student> getExcelWorkSheet()
{
return excelWorkSheet;
}
public void setExcelWorkSheet(ExcelWorkSheet<Student> excelWorkSheet)
{
this.excelWorkSheet = excelWorkSheet;
}
private Workbook createWorkBook(InputStream is) throws IOException
{
if (excelFileFileName.toLowerCase().endsWith("xls"))
{
return new HSSFWorkbook(is);
}
if (excelFileFileName.toLowerCase().endsWith("xlsx"))
{
return new XSSFWorkbook(is);
}
return null;
}
public String importExcel() throws Exception
{
Workbook workbook = createWorkBook(new FileInputStream(excelFile));
Sheet sheet = workbook.getSheetAt(0);
excelWorkSheet = new ExcelWorkSheet<Student>();
excelWorkSheet.setSheetName(sheet.getSheetName());
Row firstRow = sheet.getRow(0);
Iterator<Cell> iterator = firstRow.iterator();
List<String> cellNames = new ArrayList<String>();
while (iterator.hasNext())
{
cellNames.add(iterator.next().getStringCellValue());
}
for (int i = 1; i <= sheet.getLastRowNum(); i++)
{
Row row = sheet.getRow(i);
Student student = new Student();
System.out.println(row.getCell(0).getNumericCellValue());
//student.setId((int) row.getCell(1).getNumericCellValue());
student.setName(row.getCell(1).getStringCellValue());
//student.setSex(row.getCell(2).getStringCellValue());
//student.setBirthday(row.getCell(3).getDateCellValue());
excelWorkSheet.getData().add(student);
//this.dao.addStudent(student);
}
return SUCCESS;
}
}
struts的配置也没有多大的变化，如下：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
"http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="chinasoft" extends="struts-default">
<action name="import" class="com.chinasoft.action.ImportExcelAction">
<result>/index.jsp</result>
</action>
</package>
</struts>
时间： 2024-08-26 11:07:29