java操作Excel的poi 遍歷一個工作簿

遍歷一個工作簿

package com.java.poi;


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 org.apache.poi.poifs.filesystem.POIFSFileSystem;

import java.io.FileInputStream;
import java.io.InputStream;

/**
 * 遍歷一個工作簿
 * @author nidegui
 * @create 2019-06-17 9:46
 */
public class Test5 {

    public static void main(String[] args) throws Exception {
        InputStream is=new FileInputStream("E:\\2.xls");
        POIFSFileSystem fs=new POIFSFileSystem(is);  //接受一個輸入流
        HSSFWorkbook wb=new HSSFWorkbook(fs);//創建了一個工作簿
        HSSFSheet hssfSheet=wb.getSheetAt(0); //獲取第一個sheet頁
        if(hssfSheet==null){
            return;
        }
        //遍歷行row
        for (int rownum=0;rownum<=hssfSheet.getLastRowNum();rownum++){
            HSSFRow sheetRow = hssfSheet.getRow(rownum);
            if(sheetRow==null){
                continue;
            }
            //遍歷列cell
            for (int cellnum=0;cellnum<=sheetRow.getLastCellNum();cellnum++){
                HSSFCell cell = sheetRow.getCell(cellnum);
                if(cell==null){
                    continue;
                }
                System.out.print( " "+getValue(cell));
            }
            System.out.println();

        }


    }

    /**
     * 靜態
     * @param hssfCell
     * @return
     */
    private static String getValue(HSSFCell hssfCell){
        if(hssfCell.getCellType()==HSSFCell.CELL_TYPE_BOOLEAN){
            return String.valueOf(hssfCell.getBooleanCellValue());
        }else if(hssfCell.getCellType()==HSSFCell.CELL_TYPE_NUMERIC){
            return String.valueOf(hssfCell.getNumericCellValue());
        }else{
            return  String.valueOf(hssfCell.getStringCellValue());
        }
    }
}