java 通过poi兼容.xls和.xlsx表格导入

需要的jar:

commons-collections4-4.1.jar

poi-3.17.jar

poi-ooxml-3.17.jar

poi-ooxml-schemas-3.17.jar

xmlbeans-2.6.0.jar

可以到maven仓库下载

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 PoiImportUtil {


private final static String excel2003L = ".xls"; // 2003- 版本的excel
private final static String excel2007U = ".xlsx"; // 2007+ 版本的excel


/**
* 描述：获取流中的数据，组装成List>对象
* 
* @param in,fileName
* @return
* @throws IOException
*/
public static List> getBankListByExcel(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
for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) {
row = sheet.getRow(j);
// if (row == null || row.getFirstCellNum() == j) {
if (row == null) {
continue;
}
// 遍历所有的列
List