文件下载弹出保存框

package com.hifogroup.wiki.web.trade;

import org.apache.poi.util.IOUtils; import org.springframework.core.io.ResourceLoader; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping;

import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.net.URLEncoder; import java.nio.charset.StandardCharsets;

/**

• Created by Administrator on 2018/4/24. */ @Controller @RequestMapping("file") public class FileDownController {

  @Resource private ResourceLoader resourceLoader; @RequestMapping("file") void download(String path, HttpServletResponse response, HttpServletRequest request) { InputStream inputStream = null; OutputStream servletOutputStream =null; try { // 下载保存的文件名 String filename = "1.mp4";

       path = "1.mp4";
       org.springframework.core.io.Resource resource = resourceLoader.getResource("classpath:"+path);
  
       // Excel 下载
       // response.setContentType("application/vnd.ms-excel");
  
       // 文件视频下载
       response.setContentType("application/octet-stream");
  
       response.addHeader("Cache-Control", "no-cache, no-store, must-revalidate");
       response.addHeader("charset", "utf-8");
       response.addHeader("Pragma", "no-cache");
       String encodeName = URLEncoder.encode(filename, StandardCharsets.UTF_8.toString());
       response.setHeader("Content-Disposition", "attachment; filename=\"" + encodeName + "\"; filename*=utf-8''" + encodeName);
  
       inputStream = resource.getInputStream();
       servletOutputStream = response.getOutputStream();
       IOUtils.copy(inputStream, servletOutputStream);
       response.flushBuffer();
   } catch (Exception e) {
   } finally {
       try {
           if (servletOutputStream != null) {
               servletOutputStream.close();
           }
           if (inputStream != null) {
               inputStream.close();
           }
           // 召唤jvm的垃圾回收器
           System.gc();
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
  

  } }