POI写入海量Excel2007

import java.io.FileOutputStream;import java.io.OutputStream;import org.apache.poi.xssf.streaming.SXSSFRow;import org.apache.poi.xssf.streaming.SXSSFSheet;import org.apache.poi.xssf.streaming.SXSSFWorkbook;import org.apache.poi.xssf.usermodel.XSSFRow;public class TestPOI {/** * @param args * @throws Exception  */public static void main(String[] args) throws Exception {// TODO Auto-generated method stubOutputStream os = new FileOutputStream("D:/"+System.currentTimeMillis()+".xlsx");              //工作区     SXSSFWorkbook wb = new SXSSFWorkbook();             SXSSFSheet sheet= (SXSSFSheet)wb.createSheet("test");        SXSSFRow row =null;        for(int i=0;i<110000;i++){          row = (SXSSFRow) sheet.createRow(i);                for(int a=0;a<10;a++){             row.createCell(a).setCellValue("column"+a);                }            row=null;//            //给这一行的第一列赋值     //            row.createCell(0).setCellValue("column1");     //            //给这一行的第一列赋值     //            row.createCell(1).setCellValue("column2");              System.out.println(i);          }           //写文件             wb.write(os);             //关闭输出流             os.close();    }}