java读取Excel —— XSSFWorkbook 找不到该类

做一个Excel表格的读取时导入 org.apache.poi 包后居然提示 

XSSFWorkbook

找不到：



原来是还需要下载一个jar包： poi-ooxml 包   ，之后在引入相关类即可：

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

写到这里就顺便把读取Excel表格的方法也贴上来：

package com.test;

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 java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

public class readExcels {
private Workbook wb;        //工作谱
private Sheet sheet;        //工作表
private Row row;            //工作行

//读取的Excel文件路径
private final static String path = "D:\\infor.xlsx";

//读取Excels表格
public readExcels(String filepath) {
if(filepath==null){
return;
}
String ext = filepath.substring(filepath.lastIndexOf("."));
try {
InputStream is = new FileInputStream(filepath);
if(".xls".equals(ext)){
wb = new HSSFWorkbook(is);
}else if(".xlsx".equals(ext)){
wb = new XSSFWorkbook(is);
}else{
wb=null;
}
} catch (FileNotFoundException e) {
System.out.println("FileNotFoundException" + e);
} catch (IOException e) {
System.out.println("IOException" + e);
}
}

/**
* 读取Excel表格表头的内容
* @return String 表头内容的数组
*/
public String[] readExcelTitle() throws Exception{
if(wb==null){
throw new Exception("Workbook对象为空！");
}
sheet = wb.getSheetAt(0);
row = sheet.getRow(0);

// 标题总列数
int colNum = row.getPhysicalNumberOfCells();
System.out.println("colNum:" + colNum);
String[] title = new String[colNum];
for (int i = 0; i < colNum; i++) {

//修改单元格的数据格式，获取表头信息
row.getCell(i).setCellType(Cell.CELL_TYPE_STRING);
title[i] = row.getCell(i).getStringCellValue();
}
return title;
}

/**
* 读取Excel数据内容
*
* @return Map 包含单元格数据内容的Map对象
* @author zengwendong
*/
public List<userInfo> readExcelContent() throws Exception{
if(wb==null){
throw new Exception("Workbook对象为空！");
}

sheet = wb.getSheetAt(0);
int rowNum = sheet.getLastRowNum();
row = sheet.getRow(0);
int colNum = row.getPhysicalNumberOfCells();
List<userInfo> userList = new ArrayList<userInfo>();
userInfo user = null;
// 正文内容应该从第二行开始,第一行为表头的标题
for (int i = 1; i <= rowNum; i++) {
user = new userInfo();
user.setUserId(String.valueOf(sheet.getRow(i).getCell(0)));
user.setUserName(String.valueOf(sheet.getRow(i).getCell(1)));
user.setUserEmail(String.valueOf(sheet.getRow(i).getCell(2)));
user.setUserTel(String.valueOf(sheet.getRow(i).getCell(3)));
userList.add(user);
}
return userList;
}

public static void main(String args[]){
readExcels re = new readExcels(path);
try{

String[] title = re.readExcelTitle();
for (String ele:title)
System.out.print(ele + "                ");
System.out.println();

List<userInfo> li = re.readExcelContent();

for(userInfo ele : li){
System.out.println(ele.toString());
}

} catch (Exception e) {
e.printStackTrace();
}
}

//内部类
class userInfo{
private String userId;          //用户ID
private String userName;        //用户名
private String userEmail;       //用户邮箱
private String userTel;         //用户电话

public userInfo() {

}

public String getUserId() {
return userId;
}

public void setUserId(String userId) {
this.userId = userId;
}

public String getUserName() {
return userName;
}

public void setUserName(String userName) {
this.userName = userName;
}

public String getUserEmail() {
return userEmail;
}

public void setUserEmail(String userEmail) {
this.userEmail = userEmail;
}

public String getUserTel() {
return userTel;
}

public void setUserTel(String userTel) {
this.userTel = userTel;
}

@Override
public String toString() {
return "userId:" + userId + " userName:" + userName + " userEmail:" + userEmail + " userTel" + userTel;
}
}
}

Excel表格信息：



输出：