java程序读取excel表格并存入mysql数据库详细教程
0)poi简单介绍
Apache POI是Apache软件基金会的开放源码函式库，POI提供API给Java程序对Microsoft Office格式档案读和写的功能。
HSSF － 提供读写Microsoft Excel格式档案的功能。
XSSF － 提供读写Microsoft Excel OOXML格式档案的功能。
HWPF － 提供读写Microsoft Word格式档案的功能。
HSLF － 提供读写Microsoft PowerPoint格式档案的功能。
HDGF － 提供读写Microsoft Visio格式档案的功能。
1）导入依赖
org.apache.poi
poi
4.0.0
org.apache.poi
poi-ooxml
4.0.0
org.apache.poi
poi-ooxml-schemas
4.0.0
org.apache.httpcomponents
httpclient
4.5.6
2）写个ExcelUtil 工具类
package com.example.tool;
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import com.example.bean.ExcelBean;
import org.apache.http.client.utils.DateUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
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.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
/**
* @ClassName ExcelUtil
* @Description TODO
* @Author 胡泽
* @Date 2019/8/31 9:31
* @Version 1.0
*/
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
/**
* Excel导入
*/
public static List> getUserListByExcel(InputStream in, String fileName) throws Exception {
List> list = null;
// 创建Excel工作薄
Workbook work = 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>();
// 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
// 包含头部，所以要小于等于最后一列数,这里也可以在初始值加上头部行数，以便跳过头部
for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) {
// 读取一行
row = sheet.getRow(j);
// 去掉空行和表头
if (row == null || row.getFirstCellNum() == j) {
continue;
}
// 遍历所有的列
List 3）实体类
package com.example.bean;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import java.io.Serializable;
/**
* @ClassName ExcelBean
* @Description TODO
* @Author 胡泽
* @Date 2019/8/31 9:33
* @Version 1.0
*/
public class ExcelBean implements 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;
}
}
4）jsp页面
<%--
Created by IntelliJ IDEA.
User: admin
Date: 2019/8/30
Time: 9:02
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri ="http://java.sun.com/jsp/jstl/core"%>
Title
<%----%>
5）controller 类
@RequestMapping(value = "/getExcelData", method = RequestMethod.POST)
public String getExcelData(MultipartFile myfile, Model model) {
try {
List> lists = ExcelUtil.getUserListByExcel(myfile.getInputStream(), myfile.getOriginalFilename());
//List>--->List
List users = new ArrayList<>();
//
for (int i = 0; i < lists.size(); i++) {
UserInfo user = new UserInfo();
List 6)效果图
哈哈哈哈哈哈哈哈！！！！！