Springboot+vue后台播放接口不管怎么改，只播放同一个视频

```java
  @GetMapping("/video")
    public void videoPreview(HttpServletRequest request, HttpServletResponse response) throws Exception {

        String sourcePath = ClassUtils.getDefaultClassLoader().getResource("").getPath().substring(1);
        String realPath = sourcePath +"static/video/1.mp4";
        String realPath2 = sourcePath +"static/video/5.mp4";

**不管怎么改realpath的值都只播同一个视频
**
        Path filePath = Paths.get(realPath2);
        if (Files.exists(filePath)) {
            String mimeType = Files.probeContentType(filePath);
            if (!StringUtils.isEmpty(mimeType)) {
                response.setContentType(mimeType);
            }
            request.setAttribute(NonStaticResourceHttpRequestHandler.ATTR_FILE, filePath);
            nonStaticResourceHttpRequestHandler.handleRequest(request, response);
        } else {
            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
            response.setCharacterEncoding(StandardCharsets.UTF_8.toString());
        }


    }

```

你写死的realPath2，只用了这个路径的视频。