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Methods for obtaining absolute and relative paths in jsp

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// Obtain the relative path and absolute path of the current file in Servlet and JSP.
 
JSP

Absolute path corresponding to the root directory: request. getRequestURI ()
Absolute path of the file: application. getRealPath (request. getRequestURI ());
Absolute path of the current web application: application. getRealPath ("/");
Obtain the upper-level Directory of the request File: new File (application. getRealPath (request. getRequestURI (). getParent ()
3.2 obtain the relative and absolute paths of the current application in Servlet
Absolute path corresponding to the root directory: request. getServletPath ();
Absolute path of the file: request. getSession (). getServletContext (). getRealPath
(Request. getRequestURI ())
Absolute path of the current web application: servletConfig. getServletContext (). getRealPath ("/");

 

The code is as follows: Copy code

Out. println ("Absolute path corresponding to the root directory:" + request. getRequestURI () + "<br/> ");
 
String strPathFile = application. getRealPath (request. getRequestURI ());
Out. println ("Absolute path of the file:" + strPathFile + "<br/> ");
Out. println (application. getRealPath (request. getRequestURI ()));
String strDirPath = new File (application. getRealPath (request. getRequestURI (). getParent ();
Out. println ("absolute directory path:" + strDirPath + "<br/> ");


 

Program

The code is as follows: Copy code

String classPath = this. getClass (). getClassLoader (). getResource ("/"). getPath ();
  
Try {
ClassPath = URLDecoder. decode (classPath, "gb2312 ");
} Catch (UnsupportedEncodingException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
}


 

Example

The code is as follows: Copy code

<Body>
Physical path of the current WEB application: <% = application. getRealPath ("/") %> <BR>
The physical path of the JSP file you requested: <% = application. getRealPath (request. getRequestURI () %> <BR>
<%
String path = application. getRealPath (request. getRequestURI ());
String dir = new File (path). getParent ();
Out. println ("physical path of the directory where the current JSP file is located" + dir + "</br> ");
String realPath1 = "http: //" + request. getServerName () + ":" + request. getServerPort () + request. getContextPath () + request. getServletPath (). substring (0, request. getServletPath (). lastIndexOf ("/") + 1 );
Out. println ("web URL path:" + realPath1 );
%>
</Body>

Get the absolute path of the project in servlet
String filePath = this. getServletConfig (). getServletContext (). getRealPath ("/");

Absolute path corresponding to the root directory: request. getServletPath ();

Absolute path of the file: request. getSession (). getServletContext (). getRealPath (request. getRequestURI ())

Absolute path of the current web application: servletConfig. getServletContext (). getRealPath ("/");

ServletContext objects can be obtained in the following ways:

The code is as follows: Copy code

Javax. servlet. http. HttpSession. getServletContext ()

Javax. servlet. jsp. PageContext. getServletContext ()

Javax. servlet. ServletConfig. getServletContext ()

Absolute path of the file: request. getSession (). getServletContext (). getRealPath (request. getRequestURI ())

Absolute path of the current web application: servletConfig. getServletContext (). getRealPath ("/");

Example

// The application object in JSP is the ServerContext in Servlet, so it is obtained in Servlet as follows
// Import java. io. File;

System. out. println ("Absolute path corresponding to the root directory:" + request. getServletPath () + "<br/> ");

String strPathFile = request. getSession (). getServletContext (). getRealPath (request. getRequestURI ());
System. out. println ("Absolute file path:" + strPathFile + "<br/> ");

String strDirPath = new File (request. getSession (). getServletContext (). getRealPath (request. getRequestURI (). getParent ();
System. out. println ("absolute directory path:" + strDirPath + "<br/> ");

The file name cannot contain the following characters :/:*? "<> |

Obtain the full path of a Web project
String strDirPath = getServletContext (). getRealPath ("/");

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