idea java web 使用说明
String realPath = request.getSession().getServletContext().getRealPath(uploadPath);//上传压缩包所在目录
// E:\\ideParentDirectory\\springmvc\\target\\springmvc\\assets\\upload\\zips\\
获取resource路径
String str = this.getClass().getClassLoader().getResource("/").getPath();
/E:/ideParentDirectory/springmvc/target/springmvc/WEB-INF/classes/