XLS文件的读写

依赖jar：poi.jar
一、        写xls文件
package excel;
 
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileOutputStream;
 
publicclass CreateXLS {
    publicstatic String
outputFile =
"D:/cc.xls";
 
    publicstaticvoid main(String args[]) {
        try {
            HSSFWorkbook workbook =
new HSSFWorkbook();
            //新建一个为"hello"的工作表
            HSSFSheet sheet = workbook.createSheet("hello");
            //获取第一行
            HSSFRow row = sheet.createRow((short) 0);
            // 获取第一行的第一列
            HSSFCell cell = row.createCell((short) 0);
            //定义单元格的类型
            cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
            //
向单元格输入值
            cell.setCellValue(88);
            HSSFCell cell1 = row.createCell((short) 1);
            cell1.setCellType(HSSFCell.CELL_TYPE_STRING);
            //
中文需设置setEncoding，且该方法必须在setCellValue之前执行否则报错
            cell1.setEncoding(HSSFCell.ENCODING_UTF_16);

            cell1.setCellValue("我去");
            FileOutputStream fOut =
new FileOutputStream(outputFile);
            workbook.write(fOut);
            fOut.flush();
            fOut.close();
            System.out.println("文件生成...");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
 
二、        读xls文件
package excel;
 
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import java.io.FileInputStream;
 
publicclass ReadXLS {
    publicstatic String
fileToBeRead =
"D:/cc.xls";
 
    publicstaticvoid main(String argv[]) {
        try {
            HSSFWorkbook workbook =
new HSSFWorkbook(new FileInputStream(fileToBeRead));
            //获得"hello"的工作表
            HSSFSheet sheet = workbook.getSheet("hello");
            //
获取的第一行
            HSSFRow row = sheet.getRow(0);
            //
获取的第一列
            System.out.println(row.getCell((short)0).getNumericCellValue());
            //
获取的第二列
            System.out.println(row.getCell((short)1).getStringCellValue());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
 
结果：
88.0
我去