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() + "	";
                    else if (cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC)
                        text += cell.getNumericCellValue() + "	";
                    else if (cell.getCellType() == HSSFCell.CELL_TYPE_FORMULA)
                        text += cell.getCellFormula() + "	";
                }
                text += "
";
            }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return text;
    }
}