Package org.apache.jasper.servlet

Class JspServlet

  • All Implemented Interfaces:
    Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig
    public class JspServlet
extends javax.servlet.http.HttpServlet
    The JSP engine (a.k.a Jasper). The servlet container is responsible for providing a URLClassLoader for the web application context Jasper is being used in. Jasper will try get the Tomcat ServletContext attribute for its ServletContext class loader, if that fails, it uses the parent class loader. In either case, it must be a URLClassLoader.
    Author:
    Anil K. Vijendran, Harish Prabandham, Remy Maucherat, Kin-man Chung, Glenn Nielsen
    See Also:
    Serialized Form

    • Constructor Summary

      Constructors 
      Constructor Description
      JspServlet()  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void destroy()  
      int getJspCount()
      Returns the number of JSPs for which JspServletWrappers exist, i.e., the number of JSPs that have been loaded into the webapp with which this JspServlet is associated.
      int getJspErrorCount()
      Gets the number of errors triggered by JSP invocations.
      int getJspReloadCount()
      Gets the number of JSPs that have been reloaded.
      void init​(javax.servlet.ServletConfig config)  
      void service​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)  
      void setJspReloadCount​(int count)
      Resets the JSP reload counter.

      • Methods inherited from class javax.servlet.http.HttpServlet

        doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service

      • Methods inherited from class javax.servlet.GenericServlet

        getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

    • Constructor Detail

      • JspServlet

        public JspServlet()

    • Method Detail

      • init

        public void init​(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException
        Specified by:
        init in interface javax.servlet.Servlet
        Overrides:
        init in class javax.servlet.GenericServlet
        Throws:
        javax.servlet.ServletException

      • getJspCount

        public int getJspCount()
        Returns the number of JSPs for which JspServletWrappers exist, i.e., the number of JSPs that have been loaded into the webapp with which this JspServlet is associated.

        This info may be used for monitoring purposes.

        Returns:
        The number of JSPs that have been loaded into the webapp with which this JspServlet is associated

      • setJspReloadCount

        public void setJspReloadCount​(int count)
        Resets the JSP reload counter.
        Parameters:
        count - Value to which to reset the JSP reload counter

      • getJspReloadCount

        public int getJspReloadCount()
        Gets the number of JSPs that have been reloaded.

        This info may be used for monitoring purposes.

        Returns:
        The number of JSPs (in the webapp with which this JspServlet is associated) that have been reloaded

      • getJspErrorCount

        public int getJspErrorCount()
        Gets the number of errors triggered by JSP invocations.
        Returns:
        The number of errors triggered by JSP invocations

      • service

        public void service​(javax.servlet.http.HttpServletRequest request,
                    javax.servlet.http.HttpServletResponse response)
             throws javax.servlet.ServletException,
                    IOException
        Overrides:
        service in class javax.servlet.http.HttpServlet
        Throws:
        javax.servlet.ServletException
        IOException

      • destroy

        public void destroy()
        Specified by:
        destroy in interface javax.servlet.Servlet
        Overrides:
        destroy in class javax.servlet.GenericServlet