java读取excel文件内容，并将读取到的内容写入到另一文件中

Posted 2021-01-20 zyt-bg

需要导入的jar包下载地址https://pan.baidu.com/s/16cTpUfx0KvKkbGYkXAUKMA

代码：ReadExcel.java

//信1605-3 20163432 张运涛

package domain;

import java.io.File;   

import java.io.FileInputStream;   
  
import java.io.InputStream;   
  
    
  
import jxl.Cell;   
  
import jxl.CellType;   
  
import jxl.Sheet;   
  
import jxl.Workbook;   
  
import jxl.write.Label;   
  
    
  
public class ReadExcel    
  
{   
  
    public static void main(String[] args)    
  
    {   
  
        jxl.Workbook readwb = null;   
  
        try    
  
        {   
  
           
  
            InputStream instream = new FileInputStream("C:\\Users\\lenovo\\Desktop\\测试.xls");   //制定本地excel的文件目录
  
            readwb = Workbook.getWorkbook(instream);   
  
    
  
            //Sheet的下标是从0开始   
  
            //获取第一张Sheet表   
  
            Sheet readsheet = readwb.getSheet(0);   
  
            //获取Sheet表中所包含的总列数   
  
            int rsColumns = readsheet.getColumns();   
  
            //获取Sheet表中所包含的总行数   
  
            int rsRows = readsheet.getRows();   
  
            //获取指定单元格的对象引用   
  
            for (int i = 0; i < rsRows; i++)   
  
            {   
  
                for (int j = 0; j < rsColumns; j++)   
  
                {   
  
                    Cell cell = readsheet.getCell(j, i);   
  
                    System.out.print(cell.getContents() + " ");   
  
                }   
  
                System.out.println("数据读取结束");   
  
            }   
  
               
  
            //利用已经创建的Excel工作薄,创建新的可写入的Excel工作薄   
  
            jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(new File(   
  
                    "C:\\Users\\lenovo\\Desktop\\测试写入.xls"), readwb);   
  
            //读取第一张工作表   
  
            jxl.write.WritableSheet ws = wwb.getSheet(0);   
  
            //获得第一个单元格对象   
  
            jxl.write.WritableCell wc = ws.getWritableCell(10, 5);   
  
            //判断单元格的类型, 做出相应的转化   
  
            if (wc.getType() == CellType.LABEL)    
  
            {   
  
                Label l = (Label) wc;   
  
                l.setString("新增加的内容");   
  
            }   
  
            //写入Excel对象   
  
            wwb.write();   
  
            wwb.close();   
  
        } catch (Exception e) {   
  
            e.printStackTrace();   
  
        } finally {   
  
            readwb.close();   
  
        }   
  
}   
  
}   

运行效果