An introduction to methods based on obtaining various paths from request

equest.getRealPath() is no longer recommended. Instead:

request.getSession().getServletContext().getRealPath()

this. getServletContect().getRealPath()

this.getServlet().getServletContext().getRealPath()

ServletActionContext. getRequest().getRealPath();

Each of the above three retrievals is the absolute path of the current running file on the server

Get the various path summaries from request

request.getRealPath("url"); // Virtual directories map to real directories

request.getRealPath("./"); // The directory where the page is located

request.getRealPath(".. / "); // One level above the directory where the page is located

request.getContextPath(); // The name of the web directory applied

Such as http: / / localhost: 7001 / bookStore /

/bookStore/ = > [contextPath] (request.getContextPath())

Gets the full path to the Web project

String strDirPath = request.getSession().getServletContext().getRealPath("/");

Take the project named TEST as an example:

(1) Get the full path of the current page containing the project name: ES77en. getRequestURI()

Results: / TEST test jsp

(2) Project name: ES87en. getContextPath()

Results: / TEST

(3) Get the full name under the directory of the current page: request. getServletPath()

Results: if the page in jsp directory/TEST jsp/test jsp

(4) Get the full path of the server where the page is located: ES107en.getRealPath (" page.jsp ")

Results: D: \ resin \ webapps \ TEST \ test jsp

absPath=new ES123en.io.File (application.getRealPath (request.getRequestURI ())).getParent ();

Results: D: \ resin \ webapps \ TEST

2. Get the path in the class:

(1) Absolute path of class: ES142en.class.getClass ().getResource ("/").getPath ()
Results: / D: / TEST/WebRoot/WEB - INF/classes pack /

(2) Get the path of the project: ES157en.ES158en (" ES159en.ES160en ")
Results: D: \ TEST

3. Get the path in Servlet:

(1) Project directory: ES169en.getSession ().getServletContext ().ES172en ("") parameters can be specific to the package name.

Results: E: \ Tomcat \ webapps \ TEST

(2) IE Address bar Address: ES183en. getRequestURL()

Results: http: / / localhost: 8080 / TEST/test

(3) Get the relative address: ES194en. getRequestURI()

Results: / TEST/test