一、pom 配置
<!-- poi,Excel导入导出 -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.11</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.11</version>
</dependency>
二、实体类
①Km
package sim.bistu.pojo;
import org.springframework.stereotype.Repository;
@Repository
public class Km {
private String kmdm;
private String kmmc;
private String kmxz;
private String yefx;
public String getKmdm() {
return kmdm;
}
public void setKmdm(String kmdm) {
this.kmdm = kmdm;
}
public String getKmmc() {
return kmmc;
}
public void setKmmc(String kmmc) {
this.kmmc = kmmc;
}
public String getKmxz() {
return kmxz;
}
public void setKmxz(String kmxz) {
this.kmxz = kmxz;
}
public String getYefx() {
return yefx;
}
public void setYefx(String yefx) {
this.yefx = yefx;
}
}
——————————————————————————————————————————————————
②ExcelBean
package sim.bistu.pojo;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
public class ExcelBean implements java.io.Serializable {
private String headTextName;//列头（标题）名
private String propertyName;//对应字段名
private Integer cols;//合并单元格数
private XSSFCellStyle cellStyle;
public ExcelBean(){
}
public ExcelBean(String headTextName, String propertyName){
this.headTextName = headTextName;
this.propertyName = propertyName;
}
public ExcelBean(String headTextName, String propertyName, Integer cols) {
super();
this.headTextName = headTextName;
this.propertyName = propertyName;
this.cols = cols;
}
public String getHeadTextName() {
return headTextName;
}
public void setHeadTextName(String headTextName) {
this.headTextName = headTextName;
}
public String getPropertyName() {
return propertyName;
}
public void setPropertyName(String propertyName) {
this.propertyName = propertyName;
}
public Integer getCols() {
return cols;
}
public void setCols(Integer cols) {
this.cols = cols;
}
public XSSFCellStyle getCellStyle() {
return cellStyle;
}
public void setCellStyle(XSSFCellStyle cellStyle) {
this.cellStyle = cellStyle;
}
}
三、工具类ExcelUtils
package sim.bistu.util;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
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;
public class ExcelUtils {
private final static String excel2003L =".xls"; //2003- 版本的excel
private final static String excel2007U =".xlsx"; //2007+ 版本的excel
/**
* 描述：获取IO流中的数据，组装成List<List<Object>>对象
* @param in,fileName
* @return
* @throws IOException
*/
public List<List<Object>> getBankListByExcel(InputStream in,String fileName) throws Exception{
List<List<Object>> list = null;
//创建Excel工作薄
Workbook work = this.getWorkbook(in,fileName);
if(null == work){
throw new Exception("创建Excel工作薄为空！");
}
Sheet sheet = null;
Row row = null;
Cell cell = null;
list = new ArrayList<List<Object>>();
//遍历Excel中所有的sheet
for (int i = 0; i < work.getNumberOfSheets(); i++) {
sheet = work.getSheetAt(i);
if(sheet==null){continue;}
//遍历当前sheet中的所有行
for (int j = sheet.getFirstRowNum(); j < sheet.getLastRowNum(); j++) {
row = sheet.getRow(j);
if(row==null||row.getFirstCellNum()==j){continue;}
//遍历所有的列
List<Object> li = new ArrayList<Object>();
for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) {
cell = row.getCell(y);
li.add(this.getCellValue(cell));
}
list.add(li);
}
}
//work.close();
return list;
}
/**
* 描述：根据文件后缀，自适应上传文件的版本
* @param inStr,fileName
* @return
* @throws Exception
*/
public Workbook getWorkbook(InputStream inStr,String fileName) throws Exception{
Workbook wb = null;
String fileType = fileName.substring(fileName.lastIndexOf("."));
if(excel2003L.equals(fileType)){
wb = new HSSFWorkbook(inStr); //2003-
}else if(excel2007U.equals(fileType)){
wb = new XSSFWorkbook(inStr); //2007+
}else{
throw new Exception("解析的文件格式有误！");
}
return wb;
}
/**
* 描述：对表格中数值进行格式化
* @param cell
* @return
*/
public Object getCellValue(Cell cell){
Object value = null;
DecimalFormat df = new DecimalFormat("0"); //格式化number String字符
SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd"); //日期格式化
DecimalFormat df2 = new DecimalFormat("0.00"); //格式化数字
switch (cell.getCellType()) {
case Cell.CELL_TYPE_STRING:
value = cell.getRichStringCellValue().getString();
break;
case Cell.CELL_TYPE_NUMERIC:
if("General".equals(cell.getCellStyle().getDataFormatString())){
value = df.format(cell.getNumericCellValue());
}else if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){
value = sdf.format(cell.getDateCellValue());
}else{
value = df2.format(cell.getNumericCellValue());
}
break;
case Cell.CELL_TYPE_BOOLEAN:
value = cell.getBooleanCellValue();
break;
case Cell.CELL_TYPE_BLANK:
value = "";
break;
default:
break;
}
return value;
}
}
四、ServiceImpl类：KmServiceImpl
package sim.bistu.service;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.MultipartResolver;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import sim.bistu.mapper.KmDao;
import sim.bistu.mapper.UserDao;
import sim.bistu.pojo.Km;
import sim.bistu.pojo.User;
import sim.bistu.util.ExcelUtils;
@Service
//@Transactional
public class KmServiceImpl implements KmService {
@Autowired
private KmDao KmDao;
public String ajaxUploadExcel(HttpServletRequest request, HttpServletResponse response) {
MultipartResolver resolver = new CommonsMultipartResolver(request.getSession().getServletContext());
MultipartHttpServletRequest multipartRequest = resolver.resolveMultipart(request);
//MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest)request;
MultipartFile file = multipartRequest.getFile("file");
System.out.println("得到数据文件");
if(file.isEmpty()){
try {
throw new Exception("文件不存在！");
} catch (Exception e) {
e.printStackTrace();
}
}
InputStream in =null;
try {
in = file.getInputStream();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("加载流");
List<List<Object>> listob = null;
try {
System.out.println("加载流");
listob = new ExcelUtils().getBankListByExcel(in,file.getOriginalFilename());
} catch (Exception e) {
e.printStackTrace();
}
//该处可调用service相应方法进行数据保存到数据库中，现只对数据输出
for (int i = 0; i < listob.size(); i++) {
List<Object> lo = listob.get(i);
System.out.println("遍历" + listob.get(i));
Km vo = new Km();
Km j = null;
try {
//j = studentmapper.selectByPrimaryKey(Long.valueOf());
j = KmDao.FindKmByKmdm(String.valueOf(lo.get(0)));
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
System.out.println("没有新增");
}
/* vo.setKmdm(String.valueOf(lo.get(0)));
vo.setKmmc(String.valueOf(lo.get(1)));
vo.setKmxz(String.valueOf(lo.get(2)));
vo.setYefx(String.valueOf(lo.get(3)));*/
Map<String, Object> map = new HashMap<String, Object>();
map.put("kmdm", String.valueOf(lo.get(0)));
map.put("kmmc", String.valueOf(lo.get(1)));
map.put("kmxz", String.valueOf(lo.get(2)));
map.put("yefx", String.valueOf(lo.get(3)));
if(j == null)
{
KmDao.insertKm(map);
}
else
{
//studentmapper.updateByPrimaryKey(vo);
System.out.println("科目已存在！！！");
}
}
return "success";
}
}
五、持久化层
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="sim.bistu.mapper.KmDao">
<select id="FindKmByKmdm" resultType="Km" parameterType="String">
select * from km where kmdm = #{kmdm}
</select>
<!-- 插入科目 -->
<insert id="insertKm" parameterType="Map">
insert into km (kmdm, kmmc, kmxz,yefx)
values (#{kmdm}, #{kmmc}, #{kmxz},
#{yefx})
</insert>
</mapper>
六、Controller类
package sim.bistu.controller;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import sim.bistu.pojo.Km;
import sim.bistu.service.KmService;
@Controller
@RequestMapping("/KmController")
public class KmController {
@Autowired
KmService KmService;
@ResponseBody
@RequestMapping(value="ajaxUpload",method={RequestMethod.GET,RequestMethod.POST})
public String ajaxUploadExcel(HttpServletRequest request,HttpServletResponse response) throws Exception {
System.out.println("这是请求");
return KmService.ajaxUploadExcel(request, response);
}
}
七、jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form
action="${pageContext.request.contextPath}/KmController/ajaxUpload.do"
method="post" enctype="multipart/form-data">
请选择Excel：<input type="file" name="file"> <input type="submit"
name="上传">
</form>
</body>
</html>
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