Get the servlet absolute path and relative path code

Get the servlet absolute path and relative path code

Import java. io .*;
Import java. text .*;
Import java. util .*;
Import javax. servlet .*;
Import javax. servlet. http .*;

Public class MyServlet extends HttpServlet {

Public void doGet (HttpServletRequest req, HttpServletResponse res)
Throws ServletException, IOException {
Res. setContentType ("text/plain; charset = Shift_JIS ");
PrintWriter out = res. getWriter ();
Res. setHeader ("Content-Language", "ja ");

Locale locale = new Locale ("ja ","");
DateFormat full = DateFormat. getDateTimeInstance (DateFormat. LONG,
DateFormat. LONG,
Locale );
Out. println ("In Japan :");

Try {
FileInputStream FCM =
New FileInputStream (req. getRealPath ("/HelloWorld. ISO-2022-JP "));
InputStreamReader isr = new InputStreamReader (FCM, "ISO-2022-JP ");
BufferedReader reader = new BufferedReader (isr );
String line = null;
While (line = reader. readLine ())! = Null ){
Out. println (line );
}
}
Catch (FileNotFoundException e ){
E. printStackTrace ();
}

Out. println (full. format (new Date ()));
}
}
 
<? Xml version = "1.0" encoding = "iso-8859-1"?>
<! DOCTYPE web-app
PUBLIC "-// Sun Microsystems, Inc. // DTD Web Application 2.3 // EN"
Http://java.sun.com/dtd/web-app_2_3.dtd>
<Web-app>

<Servlet> <servlet-name> MyServletName </servlet-name>
<Servlet-class> MyServlet </servlet-class>
</Servlet>

<Servlet-mapping> <servlet-name> MyServletName </servlet-name>
<Url-pattern> *. htm </url-pattern>
</Servlet-mapping>

</Web-app>
 
Identify file path information

Import java. io .*;
Import javax. servlet .*;
Import javax. servlet. http .*;

Public class MyServlet extends HttpServlet {

Public void doGet (HttpServletRequest req, HttpServletResponse res)
Throws ServletException, IOException {
Res. setContentType ("text/plain ");
PrintWriter out = res. getWriter ();

If (req. getPathInfo ()! = Null ){
Out. println ("The file" "+ req. getPathInfo () + """);
Out. println ("Is stored at" "+ req. getPathTranslated () + """);
}
Else {
Out. println ("Path info is null, no file to lookup ");
}
}
}
 
<? Xml version = "1.0" encoding = "ISO-8859-1"?>

<! DOCTYPE web-app
PUBLIC "-// Sun Microsystems, Inc. // DTD Web Application 2.2 // EN"
Http://java.sun.com/j2ee/dtds/web-app_2_2.dtd>

<Web-app>
<Servlet> <servlet-name> MyServletName </servlet-name>
<Servlet-class> MyServlet </servlet-class>
</Servlet>

<Servlet-mapping> <servlet-name> MyServletName </servlet-name>
<Url-pattern>/index.html </url-pattern>
</Servlet-mapping>
</Web-app>