您的Web应用程序在服务器上的JVM中运行。应用程序的根文件路径通常是Tomcat服务器的文件夹。要获取此文件夹路径，您可以轻松执行以下操作：

Your web application runs within a JVM on the Server. The root file path of your application is typically the folder of your Tomcat Server. To get this folder path you can easily do the following:

String sRootPath = new File("").getAbsolutePath();

您可以将文件保存在由您创建的子文件夹中，或者您在服务器上的某处有一个额外的文件夹filesystem。

You could save your files in a subfolder created by you or you have an extra folder somewhere on the servers filesystem.