Java实现excel数据导入和导出

//写入一个Excel文件
import java.io.*;
import jxl.*;
import java.lang.Boolean;
public class WriteToExcel{
    public Boolean run(String targetFile){
        try{
            jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(new File(targetFile));
            jxl.write.WritableSheet ws = wwb.createSheet("MySheet1", 0);
            for(int i = 0; i < 10; i++){
                for(int j = 0; j < 10; j++){
                    jxl.write.Label labelC = new jxl.write.Label(j, i, "Cell["+i+", "+j+"]");
                    ws.addCell(labelC);
                }
            }
            wwb.write();
            wwb.close();//记得关闭以释放空间
            return true;
        }
        catch(Exception e){
            e.printStackTrace();
            return false;
        }
    }
}
//读取一个Excel文件（上面代码创建的），并在控制台上输出内容
import java.io.*;
import jxl.*;
import jxl.Workbook;
import java.lang.Boolean;
public class ReadFromExcel {
    public Boolean run(String targetFile){
        try{
            InputStream is = new FileInputStream(targetFile);
            jxl.Workbook rwb = Workbook.getWorkbook(is);
            Sheet rs = rwb.getSheet(0);
            for(int i = 0; i < 10; i++){
                for(int j = 0; j < 10; j++){
                    Cell cell = rs.getCell(j, i);//第一位是列号，第二位是行号
                    System.out.print(cell.getContents() + "\r");
                }
                System.out.println();
            }
            rwb.close();
            return true;
        }
        catch(Exception e){
            e.printStackTrace();
            return false;
        }
    }
}