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 = big.toString();
    break;
   }
   case XSSFCell.CELL_TYPE_FORMULA: {
    // 推断当前的cell是否为Date
    /*
     * if (XSSFDateUtil.isCellDateFormatted(cell)) { //
     * 假设是Date类型则，转化为Data格式
     *
     * //方法1：这样子的data格式是带时分秒的：2011-10-12 0:00:00 //cellvalue =
     * cell.getDateCellValue().toLocaleString();
     *
     * //方法2：这样子的data格式是不带带时分秒的：2011-10-12 Date date =
     * cell.getDateCellValue(); SimpleDateFormat sdf = new
     * SimpleDateFormat("yyyy-MM-dd"); cellvalue = sdf.format(date);
     *
     * } // 假设是纯数字 else { // 取得当前Cell的数值 cellvalue =
     * String.valueOf(cell.getNumericCellValue()); }
     */
    BigDecimal bigula = new BigDecimal(cell
      .getCachedFormulaResultType());
    cellvalue = bigula.toString();
    break;
   }
    // 假设当前Cell的Type为STRIN
   case HSSFCell.CELL_TYPE_STRING:
    // 取得当前的Cell字符串
    cellvalue = cell.getRichStringCellValue().getString();
    break;
   // 默认的Cell值
   default:
    cellvalue = " ";
   }
  } else {
   cellvalue = "";
  }
  return cellvalue;

 }

 /**
  * rief 通过这种方法获得Excel中的列名和一些excel的初始化信息，比方行数和列数
  *
  * @param is
  * @return
  * @attention
  * @author 涂作权
  * @date 2014-5-27
  * @note begin modify by null
  */
 public String[] getTitle(InputStream is) {
  try {
   xssfWorkbook = new XSSFWorkbook(is);
  } catch (IOException e) {
   e.printStackTrace();
  }
  xssfSheet = xssfWorkbook.getSheetAt(0);
  System.out.println("xssfSheet.getSheetName() = " + xssfSheet.getSheetName());

  // 获得行数
  totalRows = xssfSheet.getLastRowNum();
  System.out.println("totalRows = " + totalRows);
  xssfRow = xssfSheet.getRow(0);// first line:title
  // 获得列数
  columnNumbers = xssfRow.getPhysicalNumberOfCells();
  System.out.println("columnNumbers = " + columnNumbers);

  // 列名的集合
  String[] title = new String[columnNumbers];
  for (int i = 0; i < columnNumbers; i++) {
   title[i] = getCellFormatValue(xssfRow.getCell(i));
  }

  // 返回的是列名的数组
  return title;
 }

 public Map<Integer, String> readExcelContent(InputStream is) {
  getTitle(is);
  Map<Integer, String> content = new HashMap<Integer, String>();
  String str = "";
  // 正文内容应该从第二行開始,第一行为表头的标题
  for (int i = 1; i <= totalRows; i++) {
   xssfRow = xssfSheet.getRow(i);
   int j = 0;

   while (j <= columnNumbers) {
    String cell = getCellFormatValue(xssfRow.getCell(j)).trim();
    if (cell == "") {
     j++;
     continue;// cell="null";
    }
    str += cell + " ";
    j++;
   }
   str.trim();
   content.put(i, str);
   str = "";
  }
  return content;
 }

 public XSSFWorkbook getXssfWorkbook() {
  return xssfWorkbook;
 }

 public void setXssfWorkbook(XSSFWorkbook xssfWorkbook) {
  this.xssfWorkbook = xssfWorkbook;
 }

 public XSSFSheet getXssfSheet() {
  return xssfSheet;
 }

 public void setXssfSheet(XSSFSheet xssfSheet) {
  this.xssfSheet = xssfSheet;
 }

 public XSSFRow getXssfRow() {
  return xssfRow;
 }

 public void setXssfRow(XSSFRow xssfRow) {
  this.xssfRow = xssfRow;
 }

 public int getColumnNumbers() {
  return columnNumbers;
 }

 public void setColumnNumbers(int columnNumbers) {
  this.columnNumbers = columnNumbers;
 }

 public int getTotalRows() {
  return totalRows;
 }

 public void setTotalRows(int totalRows) {
  this.totalRows = totalRows;
 }

 public static void main(String[] args) throws Exception {
  // 构造 XSSFWorkbook 对象，strPath 传入文件路径
  ExcelParser ep = new ExcelParser();
  InputStream is = new FileInputStream(new File("D:\产品管理模板.xlsx"));
  //String[] titles = ep.getTitle(is);
  Map<Integer, String> map = ep.readExcelContent(is);
  
  for (int i = 1; i <= map.size(); i++) {
   String row = map.get(i);
   String rowArr[] = row.split(" ");
   // 假设每行里面有大于3列信息
   String cell0 = rowArr[0]; // 产品名
   String cell1 = rowArr[1]; // 国家编码
   System.out.println(cell0 + " " + cell1);
   //System.out.println(map.size());
  }
  
  is.close();
      is = null;
 }
}