无需上传附件到服务器，Servlet读取Excel

来源：互联网发布：java面试宝典软件编辑：程序博客网时间：2024/06/03 16:08

package com.str;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.poi.hssf.model.Workbook;
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 ReadExcel extends HttpServlet{

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
   throws ServletException, IOException {

  byte[] junk = new byte[1024];
        int bytesRead = 0;

        ServletInputStream is = req.getInputStream();

        // shou首先除去Http Head
        bytesRead   =   is.readLine(junk,0,junk.length);
        bytesRead   =   is.readLine(junk,0,junk.length);
        bytesRead   =   is.readLine(junk,0,junk.length);
        bytesRead   =   is.readLine(junk,0,junk.length);

        HSSFWorkbook wb = new HSSFWorkbook(is);
        HSSFSheet sheet = wb.getSheetAt(0);
        for(int j=0;j< sheet .getLastRowNum()+1;j++) {

        //创建一个行对象

        HSSFRow row = sheet.getRow(j);

        //把一行里的每一个字段遍历出来

        for(int i=0;i<row.getLastCellNum();i++) {
        //创建一个行里的一个字段的对象，也就是获取到的一个单元格中的值
        HSSFCell cell = row.getCell(i);
        //在这里我们就可以做很多自己想做的操作了，比如往数据库中添加数据等
        System.out.print(cell.toString() + " " );
        }
          System.out.println(" ");
        }
}

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
   throws ServletException, IOException {
  doGet(req, resp);
}
}

0 0