Java导入导出excel

1.工具类

package com.utils;

import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

import org.apache.http.impl.cookie.DateUtils;
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.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFFont;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import com.core.model.ExcelBean;

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> 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
			// 包涵头部，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