package com.simple.util.poi;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/**
* @program: simple_tools
* @description: 浏览器下载Excel工具类
* @author: ChenWenLong
* @create: 2019-12-30 15:23
**/
public class DownloadUtils {
/**
* 功能描述:
* 〈浏览器下载Excel工具类〉
*
* @params : [byteArrayOutputStream, response, returnName]
* @return : void
* @author : cwl
* @date : 2019/12/30 15:23
*/
public void download(ByteArrayOutputStream byteArrayOutputStream, HttpServletResponse response, String returnName) throws IOException {
response.setContentType("application/octet-stream");
returnName = response.encodeURL(new String(returnName.getBytes(),"iso8859-1")); //保存的文件名,必须和页面编码一致,否则乱码
response.addHeader("Content-Disposition","attachment;filename=total.xls");
response.setContentLength(byteArrayOutputStream.size());
response.addHeader("Content-Length", "" + byteArrayOutputStream.size());
ServletOutputStream outputstream = response.getOutputStream(); //取得输出流
byteArrayOutputStream.writeTo(outputstream); //写到输出流
byteArrayOutputStream.close(); //关闭
outputstream.flush(); //刷数据
}
}