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;

}

/**

  * \brief 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 + "\t";

    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 + "\t" + cell1);

   //System.out.println(map.size());

  }

  

  is.close();

      is = null;

 }

}