Directory files under JAVA access Webroot

We need to configure the document to access the database when we do the project, but the service-side Servlet writes, so the question is, how to access the files under Webroot. As follows: /** * Gets the data inside the Webroot */java.net.url url2 = Classloader.getresource (""); String Root_class_path = Url2.getpath () + "/"; File RootFile = new file (Root_class_path); String Web_info_directory_path = rootfile.getparent () + "/"; File Webinfodir = new file (Web_info_directory_path); String servlet_context_path = webinfodir.getparent () + "/";//Here The Servlet_context_path is the path to Webroot, string path = Servlet_c Ontext_path + "/" + "file/db.txt";p ath = Path.replaceall ("%20", "");//Documents get it.

Directory files under JAVA access Webroot