java使用POI读取excel报表

留此作为记录

 package com.demo;
 
 import java.io.FileInputStream;
 import java.util.Iterator;
 
 import org.apache.poi.hssf.usermodel.HSSFCell;
 import org.apache.poi.hssf.usermodel.HSSFRow;
 import org.apache.poi.hssf.usermodel.HSSFSheet;
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
 
 public class DemoTest {
     public static void main(String[] args) {
         System.out.println(readXls(System.getProperty("user.dir") + "\\case\\副本业务编码大全.xls"));
     }
 
     public static String readXls(String path) {
         String text = "";
         try {
             FileInputStream is = new FileInputStream(path);
             HSSFWorkbook excel = new HSSFWorkbook(is);
             // 获取第一个sheet
             HSSFSheet sheet0 = excel.getSheetAt(0);
             for (Iterator<?> rowIterator = sheet0.iterator(); rowIterator.hasNext();) {
                 HSSFRow row = (HSSFRow) rowIterator.next();
                 for (Iterator<?> iterator = row.cellIterator(); iterator.hasNext();) {
                     HSSFCell cell = (HSSFCell) iterator.next();
                     // 根据单元的的类型 读取相应的结果
                     if (cell.getCellType() == HSSFCell.CELL_TYPE_STRING)
                         text += cell.getStringCellValue() + "\t";
                     else if (cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC)
                         text += cell.getNumericCellValue() + "\t";
                     else if (cell.getCellType() == HSSFCell.CELL_TYPE_FORMULA)
                         text += cell.getCellFormula() + "\t";
                 }
                 text += "\n";
             }
         } catch (Exception e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         return text;
     }
 }