// 只需要继承IStorageManager并实现这两个方法：
// saveBinaryFile, saveFileByInputStream
FileStoreUeditorUploader implements IStorageManager {   
    // 存储到服务器某个目录
}
FastdfsUeditorUploader implements IStorageManager {   
    // 存储到FastDFS
}
AliyunUeditorUploader implements IStorageManager {   
    // 存储到阿里云
}

@Controller
@RequestMapping("actions/common/ueditor")
public class UeditorController {
    @Autowired
    private IStorageManager uploader; // 在spring.xml文件中根据项目实际情况加载具体的实现类

    @RequestMapping("upload")
    public void upload(HttpServletRequest request, HttpServletResponse response) throws Exception {
        request.setCharacterEncoding("UTF-8");
        response.setHeader("Content-Type", "text/html");

        String rootPath = request.getServletContext().getRealPath("/");
        response.getWriter().write(new ActionEnter(uploader, request, rootPath).exec());
    }
}

window.UEDITOR_CONFIG.serverUrl = "actions/common/ueditor/upload?configPath=assets/libs/ueditor/jsp/config.json";

<bean class="com.xxx.FastdfsUeditorUploader" />  

<dependency>
    <groupId>com.gitee.qdbp.thirdparty</groupId>
    <artifactId>ueditor</artifactId>
    <version>1.4.3.4</version>
</dependency>