java读取excel文件内容，并将读取到的内容写入到另一文件中

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

原文地址：https://www.cnblogs.com/zyt-bg/p/9961012.html