问题：相同链接下载文件，safari文件名编码异常

解决：response.setHeader("Content-Disposition", "attachment;filename*=utf-8''" + URLEncoder.encode(filename, "UTF-8"));

问题描述

• 谷歌下载（正常）
  

• Safari下载（异常）
  

问题代码示例

@RestController
@RequestMapping("/file")
public class FileController {

    @GetMapping("/download")
    public void download(HttpServletResponse response) {
        String filename = "图片.jpg";
        String path = "img/" + filename;
        ClassPathResource classPathResource = new ClassPathResource(path);

        try (FileInputStream fis = new FileInputStream(classPathResource.getFile());
             ServletOutputStream sos = response.getOutputStream()) {
            //设置响应头
        	response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(filename, "UTF-8"));

            IOUtils.copy(fis, sos);
        } catch (Exception e) {
            throw new RuntimeException("下载失败！");
        }
    }
}

问题解决如下

@RestController
@RequestMapping("/file")
public class FileController {

    @GetMapping("/download")
    public void download(HttpServletResponse response) {
        String filename = "图片.jpg";
        String path = "img/" + filename; // resources下路径，比如文件位置在：resources/img/图片.jpg
        ClassPathResource classPathResource = new ClassPathResource(path);

        try (FileInputStream fis = new FileInputStream(classPathResource.getFile());
             ServletOutputStream sos = response.getOutputStream()) {
            //设置响应头
            response.setHeader("Content-Disposition", "attachment;filename*=utf-8''"
                    + URLEncoder.encode(filename, "UTF-8"));

            IOUtils.copy(fis, sos);
        } catch (Exception e) {
            throw new RuntimeException("下载失败！");
        }
    }
}

关键代码

response.setHeader("Content-Disposition", "attachment;filename*=utf-8''"
                    + URLEncoder.encode(filename, "UTF-8"));

下载后文件名正常

文章参考

Safari浏览器下载文件时，文件名会URL encoded