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Strurts2下导入Excel文件数据

2015-09-13 19:40 429 查看

在项目中导入Excel是一项比较常见的功能，使用的还是POI技术，如果读者有兴趣请自行百度了解更多，我这里不多做介绍。好了还是老规矩开始贴代码。

导入Excel文件的jsp:

<%@page pageEncoding="utf-8" isELIgnored="false"%>
<%@taglib uri="/struts-tags" prefix="s"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";

%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

导入Excel文件：<s:file name="excelFile"></s:file>
<s:submit value="导入数据" align="left"></s:submit>
</s:form>

与Excel一一对应的Bean:
package com.lmc.entity;

public class Userinfo implements java.io.Serializable{

// Fields

private Integer id;
private String name;
private String pass;
private String lastname;
private String addres;
private String remark;

// Constructors

/** default constructor */
public Userinfo() {
}

/** full constructor */
public Userinfo(String name, String pass, String lastname, String addres,
String remark) {
this.name = name;
this.pass = pass;
this.lastname = lastname;
this.addres = addres;
this.remark = remark;
}

// Property accessors

public Integer getId() {
return this.id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return this.name;
}

public void setName(String name) {
this.name = name;
}

public String getPass() {
return this.pass;
}

public void setPass(String pass) {
this.pass = pass;
}

public String getLastname() {
return this.lastname;
}

public void setLastname(String lastname) {
this.lastname = lastname;
}

public String getAddres() {
return this.addres;
}

public void setAddres(String addres) {
this.addres = addres;
}

public String getRemark() {
return this.remark;
}

public void setRemark(String remark) {
this.remark = remark;
}

}
数据存放的类

package com.<span style="font-family:Arial, Helvetica, sans-serif;">lmc</span>.bean;

import java.util.ArrayList;
import java.util.List;
import org.apache.poi.hssf.record.formula.functions.T;

public class ExcelWorkSheet<T>{

private String sheetName;
private List<T> data = new ArrayList<T>();  //数据行
private List<String> columns; //列名

public String getSheetName() {
return sheetName;
}
public void setSheetName(String sheetName) {
this.sheetName = sheetName;
}
public List<T> getData() {
return data;
}
public void setData(List<T> data) {
this.data = data;
}
public List<String> getColumns() {
return columns;
}
public void setColumns(List<String> columns) {
this.columns = columns;
}

}

最重要的Action类：

package com.lmc.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 org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import com.lmc.bean.ExcelWorkSheet;
import com.lmc.entity.Userinfo;
import com.opensymphony.xwork2.ActionSupport;
/**
*导入的Action类：
*/
@Controller
@Scope("prototype")
public class InputExcelAction extends BaseAction {

private static final long serialVersionUID = 1L;

private File excelFile; //上传的文件

private String excelFileFileName; //保存原始文件名

//将Excel文件解析完毕后信息存放到这个对象中
private ExcelWorkSheet<Userinfo> 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<Userinfo> getExcelWorkSheet() {
return excelWorkSheet;
}

public void setExcelWorkSheet(ExcelWorkSheet<Userinfo> excelWorkSheet) {
this.excelWorkSheet = excelWorkSheet;
}

//判断文件类型
public 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;
}
//导入方法
public String inputExcel() throws Exception{
Workbook book = createWorkBook(new FileInputStream(excelFile));
//        book.getNumberOfSheets();  //判断Excel文件有多少个sheet
Sheet sheet =  book.getSheetAt(0); //读取第一个sheet
excelWorkSheet = new ExcelWorkSheet<Userinfo>();
//保存工作单名称
Row firstRow = sheet.getRow(0);
Iterator<Cell> iterator = firstRow.iterator();

//保存列名
List<String> cellNames = new ArrayList<String>();
while (iterator.hasNext()) {
cellNames.add(iterator.next().getStringCellValue());
}
excelWorkSheet.setColumns(cellNames);
for (int i = 1; i <= sheet.getLastRowNum(); i++) {  //for循环获取Excel中的数据
Row ros = sheet.getRow(i);
Userinfo user = new Userinfo();
user.setId((int)ros.getCell(0).getNumericCellValue());
user.setName(ros.getCell(1).getStringCellValue());
user.setPass(ros.getCell(2).getStringCellValue());
user.setLastname(ros.getCell(3).getStringCellValue());
user.setAddres(ros.getCell(4).getStringCellValue());
user.setRemark(ros.getCell(5).getStringCellValue());
excelWorkSheet.getData().add(user);
}
//excelWorkSheet对象存放的是Excel中的数据，
//在这里你可以将数据存放到数据库中或者做其他操作就随你发挥了，
//我这里输出其中的一项到控制台
for (int i = 0; i < excelWorkSheet.getData().size(); i++) {
Userinfo info = excelWorkSheet.getData().get(i);
System.out.println(info.getLastname());
}
//把导入的数据展示到页面
targetURL = "/WEB-INF/excel/inputExcelSuccess.jsp";

4000
return SUCCESS;
}

}

Excel导入后数据输出的jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";

%>
<h1><s:property value="excelWorkSheet.sheetName" /> </h1>
<p>
<s:iterator value="excelWorkSheet.columns">
<s:property /> ||
</s:iterator>
</p>

<s:iterator var="user" value="excelWorkSheet.data">
<p>
<s:property value="#user.id"/>
<s:property value="#user.name"/>
<s:property value="#user.pass"/>
<s:property value="#user.lastname"/>
<s:property value="#user.addres"/>
<s:property value="#user.remark"/>
</p>
</s:iterator> 完成。
附上我使用的Excel文件截图和成功后的效果图：

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标签： Excel导入 Excel导入例子例子 POI导入Struts2下导入数据

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