Spring-MVC-文件流形式下载返回视频文件

import io.swagger.annotations.Api;import io.swagger.annotations.ApiOperation;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpServletResponse;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.OutputStream;import java.net.URLEncoder;/** * 文件流形式下载视频 * @author Front Ng * @date 2019-05-23 09:25 **/@Controller@RequestMapping(value = "/download")@Api(value = "下载", tags = "下载")public class DownloadController {    @ApiOperation(value = "下载视频")    @RequestMapping(method = RequestMethod.GET)    public void download(HttpServletResponse response) throws IOException {        File file = new File("/Users/front/Downloads/123.mp4");        FileInputStream inputStream = new FileInputStream(file);        byte[] data = new byte[(int) file.length()];        int length = inputStream.read(data);        inputStream.close();        String fileName = URLEncoder.encode("文件流形式视频.mp4", "UTF-8");        response.setContentType("application/octet-stream;charset=UTF-8");        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");        response.addHeader("Content-Length", "" + data.length);        OutputStream stream = response.getOutputStream();        stream.write(data);        stream.flush();        stream.close();    }}