使用到的jar包
JSP: client.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<%
String importMsg = "";
if (request.getSession().getAttribute("msg") != null) {
importMsg = request.getSession().getAttribute("msg").toString();
}
request.getSession().setAttribute("msg", "");
%>
<head>
<title>批量导入客户</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script src="${pageContext.request.contextPath}/js/jquery-1.11.0.min.js"></script>
<script type="text/javascript">
function check() {
var excel_file = $("#excel_file").val();
if (excel_file == "" || excel_file.length == 0) {
alert("请选择文件路径！");
return false;
} else {
return true;
}
} $(document).ready(function() {
var msg = "";
if ($("#importMsg").text() != null) {
msg = $("#importMsg").text();
}
if (msg != "") {
alert(msg);
}
});
</script>
<body>
<a href="download.htm?fileName=muban.xls">下载Exel模板</a> <div>
<font color="bule">批量导入客户</font>
</div> <form action="batchimport.htm" method="post" enctype="multipart/form-data" onsubmit="return check();">
<div style="margin: 30px;">
<input id="excel_file" type="file" name="filename" accept="xlsx" size="80" />
<input id="excel_button" type="submit" value="导入Excel" />
</div>
<font id="importMsg" color="red"><%=importMsg%></font><input type="hidden" />
</form>
</body>
</html>
controller: ClientController.java
package com.shiliu.game.controller; import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List; import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile; import com.shiliu.game.domain.bean.Customer;
import com.shiliu.game.utils.ReadExcel;
import com.shiliu.game.utils.WDWUtil; /**
* @author wkr
* @Date 2016-11-18
*/
@Controller
@RequestMapping("/client")
public class ClientController { private static Log log = LogFactory.getLog(ClientController.class);
/**
* 访问controller进入操作页面
* @return
*/
@RequestMapping(value="/init")
public String init(){
System.out.println("控制台输出：初始化页面信息");
return "client/client";
}
/**
* 上传Excel,读取Excel中内容
* @param file
* @param request
* @param response
* @return
* @throws IOException
*/
@RequestMapping(value = "/batchimport",method = RequestMethod.POST)
public String batchimport(@RequestParam(value="filename") MultipartFile file,
HttpServletRequest request,HttpServletResponse response) throws IOException{
log.info("ClientController ..batchimport() start");
String Msg =null;
boolean b = false; //判断文件是否为空
if(file==null){
Msg ="文件是为空！";
request.getSession().setAttribute("msg",Msg);
return "client/client";
} //获取文件名
String name=file.getOriginalFilename(); //进一步判断文件是否为空（即判断其大小是否为0或其名称是否为null）验证文件名是否合格
long size=file.getSize();
if(name==null || ("").equals(name) && size==0 && !WDWUtil.validateExcel(name)){
Msg ="文件格式不正确！请使用.xls或.xlsx后缀文档。";
request.getSession().setAttribute("msg",Msg);
return "client/client";
} //创建处理EXCEL
ReadExcel readExcel=new ReadExcel();
//解析excel，获取客户信息集合。
List<Customer> customerList = readExcel.getExcelInfo(file);
if(customerList != null && !customerList.toString().equals("[]") && customerList.size()>=1){
b = true;
} if(b){
//迭代添加客户信息（注：实际上这里也可以直接将customerList集合作为参数，在Mybatis的相应映射文件中使用foreach标签进行批量添加。）
for(Customer customer:customerList){
//这里可以做添加数据库的功能
System.out.println("第一个值："+customer.getCustomer1()+"\t第二个值："+customer.getCustomer2()+"\t第三个值："+customer.getCustomer3());
}
Msg ="批量导入EXCEL成功！";
request.getSession().setAttribute("msg",Msg);
}else{
Msg ="批量导入EXCEL失败！";
request.getSession().setAttribute("msg",Msg);
}
return "client/client";
}
/**
* 下载Excel模板
* @param fileName
* @param request
* @param response
* @return
*/
@RequestMapping("/download")
public String download(String fileName, HttpServletRequest request,
HttpServletResponse response) {
System.out.println("控制台输出：走入下载");
response.setCharacterEncoding("utf-8");
response.setContentType("multipart/form-data");
response.setHeader("Content-Disposition", "attachment;fileName="+ fileName);
try {
/*String path = Thread.currentThread().getContextClassLoader()
.getResource("").getPath()
+ "download";//这个download目录为啥建立在classes下的
*/
String path="D:\\upload";
InputStream inputStream = new FileInputStream(new File(path+ File.separator + fileName)); OutputStream os = response.getOutputStream();
byte[] b = new byte[2048];
int length;
while ((length = inputStream.read(b)) > 0) {
os.write(b, 0, length);
} // 这里主要关闭。
os.close(); inputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// 返回值要注意，要不然就出现下面这句错误！
//java+getOutputStream() has already been called for this response
return null;
} }
utils: WDWUtil.java
package com.shiliu.game.utils;
/**
* @author wkr
* @Date 2016-11-18
* 工具类验证Excel文档
*/
public class WDWUtil {
/**
* @描述：是否是2003的excel，返回true是2003
* @param filePath
* @return
*/
public static boolean isExcel2003(String filePath) {
return filePath.matches("^.+\\.(?i)(xls)$");
} /**
* @描述：是否是2007的excel，返回true是2007
* @param filePath
* @return
*/
public static boolean isExcel2007(String filePath) {
return filePath.matches("^.+\\.(?i)(xlsx)$");
} /**
* 验证是否是EXCEL文件
* @param filePath
* @return
*/
public static boolean validateExcel(String filePath){
if (filePath == null || !(isExcel2003(filePath) || isExcel2007(filePath))){
return false;
}
return true;
}
}
utils: ReadExcel.java
package com.shiliu.game.utils; import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
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.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile; import com.shiliu.game.domain.bean.Customer;
/**
* @author wkr
* @Date 2016-11-18
* 工具类读取Excel类中内容
*/
public class ReadExcel {
//总行数
private int totalRows = 0;
//总条数
private int totalCells = 0;
//错误信息接收器
private String errorMsg;
//构造方法
public ReadExcel(){}
//获取总行数
public int getTotalRows() { return totalRows;}
//获取总列数
public int getTotalCells() { return totalCells;}
//获取错误信息-暂时未用到暂时留着
public String getErrorInfo() { return errorMsg; } /**
* 读EXCEL文件，获取客户信息集合
* @param fielName
* @return
*/
public List<Customer> getExcelInfo(MultipartFile Mfile){ //把spring文件上传的MultipartFile转换成CommonsMultipartFile类型
CommonsMultipartFile cf= (CommonsMultipartFile)Mfile; //获取本地存储路径
File file = new File("D:\\fileupload");
//创建一个目录 （它的路径名由当前 File 对象指定，包括任一必须的父路径。）
if (!file.exists()) file.mkdirs();
//新建一个文件
File file1 = new File("D:\\fileupload\\" + new Date().getTime() + ".xls");
//将上传的文件写入新建的文件中
try {
cf.getFileItem().write(file1);
} catch (Exception e) {
e.printStackTrace();
} //初始化客户信息的集合
List<Customer> customerList=new ArrayList<Customer>();
//初始化输入流
FileInputStream is = null;
Workbook wb = null;
try{
//根据新建的文件实例化输入流
is = new FileInputStream(file1);
//根据excel里面的内容读取客户信息 //当excel是2003时
wb = new HSSFWorkbook(is);
//当excel是2007时
//wb = new XSSFWorkbook(is); //读取Excel里面客户的信息
customerList=readExcelValue(wb);
is.close();
}catch(Exception e){
e.printStackTrace();
} finally{
if(is !=null)
{
try{
is.close();
}catch(IOException e){
is = null;
e.printStackTrace();
}
}
}
return customerList;
} /**
* 读取Excel里面客户的信息
* @param wb
* @return
*/
private List<Customer> readExcelValue(Workbook wb){
//得到第一个shell
Sheet sheet=wb.getSheetAt(0); //得到Excel的行数
this.totalRows=sheet.getPhysicalNumberOfRows(); //得到Excel的列数(前提是有行数)
if(totalRows>=1 && sheet.getRow(0) != null){//判断行数大于一，并且第一行必须有标题（这里有bug若文件第一行没值就完了）
this.totalCells=sheet.getRow(0).getPhysicalNumberOfCells();
}else{
return null;
} List<Customer> customerList=new ArrayList<Customer>();//声明一个对象集合
Customer customer;//声明一个对象 //循环Excel行数,从第二行开始。标题不入库
for(int r=1;r<totalRows;r++){
Row row = sheet.getRow(r);
if (row == null) continue;
customer = new Customer(); //循环Excel的列
for(int c = 0; c <this.totalCells; c++){
Cell cell = row.getCell(c);
if (null != cell){
if(c==0){
customer.setCustomer1(getValue(cell));//得到行中第一个值
}else if(c==1){
customer.setCustomer2(getValue(cell));//得到行中第二个值
}else if(c==2){
customer.setCustomer3(getValue(cell));//得到行中第三个值
}
}
}
//添加对象到集合中
customerList.add(customer);
}
return customerList;
} /**
* 得到Excel表中的值
*
* @param cell
* Excel中的每一个格子
* @return Excel中每一个格子中的值
*/
@SuppressWarnings({ "static-access", "unused" })
private String getValue(Cell cell) {
if (cell.getCellType() == cell.CELL_TYPE_BOOLEAN) {
// 返回布尔类型的值
return String.valueOf(cell.getBooleanCellValue());
} else if (cell.getCellType() == cell.CELL_TYPE_NUMERIC) {
// 返回数值类型的值
return String.valueOf(cell.getNumericCellValue());
} else {
// 返回字符串类型的值
return String.valueOf(cell.getStringCellValue());
}
} }
entity: Customer.java
package com.shiliu.game.domain.bean;
/**
* @author wkr
* @Date 2016-11-18
* 实体类
*/
public class Customer { private Integer id; private String Customer1; private String Customer2; private String Customer3; public Customer() {
super();
} public Customer(Integer id, String customer1, String customer2,
String customer3) {
super();
this.id = id;
Customer1 = customer1;
Customer2 = customer2;
Customer3 = customer3;
} public Integer getId() {
return id;
} public void setId(Integer id) {
this.id = id;
} public String getCustomer1() {
return Customer1;
} public void setCustomer1(String customer1) {
Customer1 = customer1;
} public String getCustomer2() {
return Customer2;
} public void setCustomer2(String customer2) {
Customer2 = customer2;
} public String getCustomer3() {
return Customer3;
} public void setCustomer3(String customer3) {
Customer3 = customer3;
}
}
Customer
效果页面：
