Jar包

Java代码

package POI;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
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;

public class POXExpExcel {
    public static void main(String[] args) {
        String[] title = {"id","name","sex"};
//        创建一个工作簿
        HSSFWorkbook workbook = new HSSFWorkbook();
//        创建一个工作表sheet
        HSSFSheet sheet = workbook.createSheet();
//        创建第一行
        HSSFRow row = sheet.createRow(0);
//        创建一个单元格
        HSSFCell cell = null;
//        创建表头
        for(int i=0;i<title.length;i++){
            cell=row.createCell(i);
            cell.setCellValue(title[i]);
        }
//        从第二行开始追加数据
        for(int i=1;i<=10;i++){
//            创建第i行
            HSSFRow nextRow = sheet.createRow(i);
//            参数代表第几列
            HSSFCell cell2 = nextRow.createCell(0);
            cell2.setCellValue("a"+i);
            cell2 = nextRow.createCell(1);
            cell2.setCellValue("user"+i);
            cell2 = nextRow.createCell(2);
            cell2.setCellValue("男");
        }
//        创建一个文件
        File file = new File("E:/POI_TEST1.xls");
        try {
            file.createNewFile();
//            打开文件流
            FileOutputStream outputStream = FileUtils.openOutputStream(file);
            workbook.write(outputStream);
            outputStream.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

结果: