poi解析xls文件demo

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;

import java.io.FileInputStream;
import java.io.IOException;

/**
 * @param
 * @author zhangxiaodong
 * @Description: TODO poi解析Demo
 * @return
 * @date 2019/11/3 13:16
 * @Version 1.0
 */
public class PoiExcelTest {
    public static void main(String[] args)throws IOException {
        //读取数据流
        FileInputStream inp = new FileInputStream("项目信息.xls");
        //解析工作簿
        HSSFWorkbook workbook = new HSSFWorkbook(inp);
        //解析工作表
        //获得有多少张工作表
        int size = workbook.getNumberOfSheets();
        System.out.println("一共"+size+"张工作表");

        HSSFSheet sheet;
        HSSFRow row;
        HSSFCell cell;
        HSSFRow rowTou;

        //循环处理读取每一个工作表中的数据
        for (int i = 0; i <size ; i++) {
            sheet = workbook.getSheetAt(i);
            //拿到一个具体的工作表
            System.out.println("读取当前工作表的名称"+sheet.getSheetName());
            //得到有效行数
            int rowNumber = sheet.getPhysicalNumberOfRows();
            System.out.println("有效行数"+rowNumber);
            for (int j = 0; j <rowNumber ; j++) {
                System.out.println("正在读取第"+(j+1)+"行数据");
                if(j==0){
                    rowTou = sheet.getRow(0);
                    for (int k = 0; k <rowTou.getLastCellNum() ; k++) {
                        HSSFCell cellLie = rowTou.getCell(k);
                        System.out.println("行标题："+cellLie.getStringCellValue());
                    }
                    continue;
                }
                //得到行内数据
                row = sheet.getRow(j);
                //得到行内列数据
                for (int k = 0; k < row.getLastCellNum(); k++) {
                    //获取每一列
                    cell = row.getCell(k);

                    //判断列值的数据类型并输出
                    switch (cell.getCellType()){
                        case HSSFCell.CELL_TYPE_NUMERIC:
                            System.out.println("列值："+String.valueOf(cell.getNumericCellValue()));
                        break;
                        case HSSFCell.CELL_TYPE_STRING:
                            System.out.println("列值："+cell.getStringCellValue());
                            break;
                    }
                }

            }
        }
    }
}