package com.example.survey.util;

import java.io.BufferedOutputStream;
import java.io.FileInputStream;

import java.io.IOException;
import java.io.OutputStream;
import java.util.UUID;

import javax.servlet.http.HttpServletResponse;

public class DownloadUtil {
    public static void downloadFile(String path, HttpServletResponse response) throws IOException {
        response.addHeader("Content-Disposition", "attachment;filename=" + UUID.randomUUID().toString() + ".docx");
        FileInputStream inputStream = new FileInputStream(path);
        int count =0;
        byte[] by = new byte[1024];
        
        OutputStream out = response.getOutputStream();
        while((count=inputStream.read(by))!=-1){
            out.write(by, 0, count);//将缓冲区的数据输出到浏览器
        }
        inputStream.close();
        out.flush();
        out.close();
    }
}