File文件下载

• Z时代
• 2024-01-10
• 分类：综合

videoAppName: "xxx.exe"//配置文件中配置信息

@Value("${videoAppName}")
private String videoAppName;

/**
 * 返回exe文件
* @return
*/
@ApiOperation("返回exe文件")
@GetMapping(value = "/getFile")
public CommonResult<String> getFile(HttpServletRequest request, HttpServletResponse response){
    InputStream is = null;
    OutputStream os = null;
    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;
    try {
//文件地址
String fileDownload = ResourceUtils.getURL("classpath:").getPath() + "static/" + videoAppName;
        response.setContentType("applicaiton/x-download");
        response.addHeader("Content-Disposition", "attachment;filename=" + videoAppName);
        is = new FileInputStream(new File(fileDownload));
        bis = new BufferedInputStream(is);
        os = response.getOutputStream();
        bos = new BufferedOutputStream(os);
        byte[] b = new byte[2048];
        int len = 0;
        while((len = bis.read(b)) != -1){
            bos.write(b,0,len);
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
        return CommonResult.failed("下载失败：" + e.getMessage());
    }catch (IOException e) {
        e.printStackTrace();
        return CommonResult.failed("下载失败：" + e.getMessage());
    }finally {
        try {
            bis.close();
            is.close();
            bos.close();
            os.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return CommonResult.success("下载成功");
}

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