ssm项目实现excel与数据库双向导入
ssm项目实现excel与数据库双向导入
- 环境介绍
环境：SSM+Maven+Poi+jsp+mysql+jdk1.8
- pom.xml
<!-- 文件上传 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<!--poi-->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.14</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.14</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.14</version>
</dependency>
- 工具类1直接可用
ExcelBean.class
package com.jinrui.utils;
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;
}
}
- 工具类2直接可用
ExcelUtil.class
package com.jinrui.utils;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
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 ExcelUtil {
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; //页数
Row row = null; //行数
Cell cell = null; //列数
list = new ArrayList<List<Object>>();
//遍历Excel中所有的sheet
// 将最大的列数记录下来
int lastCellNum = 0;
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>();
// 比较当前行的列数跟表的最大的列数
if (j == sheet.getFirstRowNum()) {
// 将第一行的列数设为最大
lastCellNum = row.getLastCellNum();
}else {
lastCellNum = lastCellNum > row.getLastCellNum() ? lastCellNum : row.getLastCellNum();
}
for (int y = row.getFirstCellNum(); y < lastCellNum; y++) {
cell = row.getCell(y);
li.add(this.getValue(cell));
}
list.add(li);
}
}
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
*/
//解决excel类型问题，获得数值
public String getValue(Cell cell) {
String value = "";
if(null==cell){
return value;
}
switch (cell.getCellType()) {
//数值型
case Cell.CELL_TYPE_NUMERIC:
if (HSSFDateUtil.isCellDateFormatted(cell)) {
//如果是date类型则 ，获取该cell的date值
Date date = HSSFDateUtil.getJavaDate(cell.getNumericCellValue());
// 根据自己的实际情况，excel表中的时间格式是yyyy-MM-dd HH:mm:ss还是yyyy-MM-dd，或者其他类型
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// 由于方法的返回值类型为String，这里将Date类型转为String，便于统一返回数据
value = format.format(date);;
}else {// 纯数字
BigDecimal big=new BigDecimal(cell.getNumericCellValue());
value = big.toString();
//解决1234.0 去掉后面的.0
if(null!=value&&!"".equals(value.trim())){
String[] item = value.split("[.]");
if(1<item.length&&"0".equals(item[1])){
value=item[0];
}
}
}
break;
//字符串类型
case Cell.CELL_TYPE_STRING:
value = cell.getStringCellValue().toString();
break;
// 公式类型
case Cell.CELL_TYPE_FORMULA:
//读公式计算值
value = String.valueOf(cell.getNumericCellValue());
if (value.equals("NaN")) {// 如果获取的数据值为非法值,则转换为获取字符串
value = cell.getStringCellValue().toString();
}
break;
// 布尔类型
case Cell.CELL_TYPE_BOOLEAN:
value = " "+ cell.getBooleanCellValue();
break;
default:
value = cell.getStringCellValue().toString();
}
if("null".endsWith(value.trim())){
value="";
}
return value;
}
}
Excel--->数据库
-
controller层
@RequestMapping("/fileUpload") public String fileUpload(@RequestParam(value = "uploadfile") MultipartFile uploadfile, Model model) { MultipartFile file = uploadfile; String originalFilename=uploadfile.getOriginalFilename(); //获取原文件名带有后缀----记录.xlsx System.out.println(originalFilename); InputStream in =null; try { in = file.getInputStream(); } catch (IOException e) { e.printStackTrace(); } List<List<Object>> listob = null; try { //在这里解析上传的excel中的每行每列的数据存到一个list中 listob = new ExcelUtil().getBankListByExcel(in,file.getOriginalFilename()); } catch (Exception e) { e.printStackTrace(); } //对每个元素进行设置到自己实体中 for (int i = 0; i < listob.size(); i++) { List<Object> lo = listob.get(i); SaleDetail saleDetail = new SaleDetail(); saleDetail.setSaleNo( new BigInteger(String.valueOf(lo.get(0))) ); // 表格的第一列 注意数据格式需要对应实体类属性 saleDetail.setGoodsNo(Integer.valueOf(String.valueOf(lo.get(1)))); // 表格的第二列 saleDetail.setNumber(Integer.valueOf(String.valueOf(lo.get(2)))); // 表格的第二列 saleDetail.setSubTotal(new BigDecimal(String.valueOf(lo.get(3)))); // 表格的第二列 System.out.println("从excel中读取的实体类对象："+ saleDetail); saleService.insert(saleDetail); model.addAttribute("msg", "上传成功"); return "info"; }
数据库--->excel
- controller层
@RequestMapping("/outPutExcel")
@ResponseBody
public String outPutExcel(HttpServletRequest request, HttpServletResponse response){
try {
List<SaleDetail> saleDetailList = saleService.finAllSaleDetail();
//导出excel
response.setHeader("Content-Disposition","attachment;filename="+new String("测试表.xls".getBytes(),"ISO-8859-1"));
response.setContentType("application/x-excel;charset=UTF-8");
OutputStream outputStream = response.getOutputStream();
//导出
saleService.exportExcel(saleDetailList,outputStream);
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
return "ok";
}
- service层
//service层
//导出
@Override
public void exportExcel(List<SaleDetail> saleDetailList, OutputStream outputStream) throws IOException {
//1.创建工作簿
HSSFWorkbook hwb =new HSSFWorkbook();
//1.1创建合并单元格
//CellRangeAddress cellRangeAddress =new CellRangeAddress(0,0,0,4);
//2.创建工作表
HSSFSheet sheet = hwb.createSheet("用户信息表");
//2.1添加合并单元格
//sheet.addMergedRegion(cellRangeAddress);
//3.1创建第一行及单元格
// HSSFRow row1 = sheet.createRow(0);
// HSSFCell cell1 = row1.createCell(0);
// cell1.setCellValue("用户信息");
//3.2创建第二行及单元格
HSSFRow row2 = sheet.createRow(1);
String[] row2Cell = {"销售单号","商品类型","数量","小计"};
for (int i =0 ; i < row2Cell.length ; i++ ){
row2.createCell(i).setCellValue(row2Cell[i]);
}
//3.3创建第三行及单元格
if(saleDetailList!= null && saleDetailList.size()>0){
for(int j=0 ; j<saleDetailList.size() ;j++){
HSSFRow rowUser = sheet.createRow(j+2);
rowUser.createCell(0).setCellValue(String.valueOf(saleDetailList.get(j).getSaleNo()));
rowUser.createCell(1).setCellValue(String.valueOf(saleDetailList.get(j).getGoodsNo()));
rowUser.createCell(2).setCellValue(String.valueOf(saleDetailList.get(j).getNumber()));
rowUser.createCell(3).setCellValue(String.valueOf(saleDetailList.get(j).getSubTotal()));
//rowUser.createCell(4).setCellValue(userList.get(j).getId());
}
}
//5.输出
hwb.write(outputStream);
}
前端
jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="missingMessage" uri="http://www.springframework.org/tags/form" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" isELIgnored="false" %>
<html>
<head>
<title>上传测试</title>
</head>
<body>
<form action="SaleDetail/fileUpload" method="post" enctype="multipart/form-data">
<input id="upfile" type="file" required name="uploadfile" accept=".xls,.xlsx"/>
<input type="submit" onclick="return checkData()" value="提交"/>
</form>
<a href="SaleDetail/outPutExcel" >导出</a>
<script type="text/javascript">
var msg="${msg}";
if(msg!=""){
alert(msg);
}
</script>
<script type="text/javascript">
//JS校验form表单信息
function checkData(){
var fileDir = $("#upfile").val();
var suffix = fileDir.substr(fileDir.lastIndexOf("."));
if("" == fileDir){
alert("选择需要导入的Excel文件！");
return false;
}
if(".xls" != suffix && ".xlsx" != suffix ){
alert("选择Excel格式的文件导入！");
return false;
}
return true;
}
</script>
</body>
</html>
尽量的奔跑
