poi 创建excel表格->简单实现

import org.apache.poi.hssf.usermodel.HSSFWorkbook;import org.apache.poi.openxml4j.exceptions.InvalidFormatException;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;public class excelWrite {    public static void main(String[] args) throws IOException, InvalidFormatException {        //创建路径        File testFile = new File("/Users/liuxiangru/Desktop/testa.xlsx");        //创建输出流        FileOutputStream fileOutputStream = new FileOutputStream(testFile);        //创建工作薄        HSSFWorkbook xssfWorkbook=new HSSFWorkbook();        //创建Sheet页->创建Row->创建cell->填写单元格内容        xssfWorkbook.createSheet("one")                .createRow(0).createCell(0)                .setCellValue("age=18");        //把excel工作簿写入硬盘        xssfWorkbook.write(fileOutputStream);        fileOutputStream.flush();        fileOutputStream.close();    }}