ExcelParser ，Excel解析的工具类（正对解析xlsx）

package cn.com.css.common.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.util.HashMap;
import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFCell;
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;

public class ExcelParser {
 private XSSFWorkbook xssfWorkbook;
 private XSSFSheet xssfSheet;
 private XSSFRow xssfRow;
 private int columnNumbers;
 private int totalRows;

 /**
  * @param args
  * @throws Exception
  */
 private String getCellFormatValue(XSSFCell cell) {
  String cellvalue = "";
  if (cell != null) {
   // 推断当前Cell的Type
   switch (cell.getCellType()) {
   // 假设当前Cell的Type为NUMERIC
   case XSSFCell.CELL_TYPE_NUMERIC: {
    BigDecimal big = new BigDecimal(cell.getNumericCellValue());
    cellvalue = bi