java - Spring 。访问webapp\resources目录

Question

我编写了以下 Spring Controller :

@RequestMapping(method = RequestMethod.GET, value = "/getVideoIcon")
    @ResponseBody
    public FileSystemResource getVideoIcon() throws IOException {
        return new FileSystemResource(new File("/resources/images/video_icon.png"));
    }

该文件位于src\main\webapp\resources\images

当我调用 Controller 时，出现以下错误:

HTTP Status 500 - resources\images\video_icon.png (The system cannot find the path specified)

请帮助纠正我的错误。

Answer 1

如果需要获取原项目的路径，应该使用getServletContext().getRealPath

@RequestMapping(method = RequestMethod.GET, value = "/getVideoIcon")
@ResponseBody
public FileSystemResource getVideoIcon(HttpServletRequest request) throws IOException {
    String path = request.getSession().getServletContext().getRealPath("/resources/images")+"/video_icon.png";
    return new FileSystemResource(new File(path));
}

如果您需要检查 path 变量所保存的内容，请在 return 语句之前使用 System.out.println(path);。如果您在尝试上述代码后仍然遇到错误消息，请随时询问..