fc.web.page
Class PageServlet
java.lang.Object
javax.servlet.GenericServlet
javax.servlet.http.HttpServlet
fc.web.servlet.FCBaseServlet
fc.web.page.PageServlet
- All Implemented Interfaces:
- java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig
public class PageServlet
- extends FCBaseServlet
The page servlet. Handles web requests that are mapped to a molly server
page (typically via a *.mp
extension).
All uncaught exceptions in the rendered page are wrapped in a
ServletException and thrown up to the servlet container. These are
typically handled by the container by either showing the full stack trace
to the user or using a error page configured in the containers
web.xml file. This latter approach is recommended for production
use. An
example is shown below.
java.lang.Exception
/errors/error.mp
However, if some partial response has already been sent to the browser and
an exception occurs (later in java code on that same page), then the
error page (if configured in web.xml) cannot typically be displayed.
For that scenario, this servlet accepts an optional
error_page initialization parameter. This parameter, if
present, should contain a webapp-relative path to an error page that
will be included in the rendered page if there is an exception
after the response has been committed. This error page is then
included in the response sent to the browser.
The following attributes are available in the error page
javax.servlet.error.status_code
javax.servlet.error.exception
javax.servlet.error.request_uri
javax.servlet.error.servlet_name
This servlet also accepts an optional 404_page
parameter. This parameter, if present, should contain a web document
root-relative path to a 404 or not found page. This page is different
than the error_page because it signifies a badly typed URL request
for a page that does not exist. (for example,
http://somehost/badpage.mp). This parameter should be the same as
the 404 error code parameter in web.xml.
For example:
404
/errors/not_found.html
- See Also:
- Serialized Form
Method Summary |
void |
destroy()
|
void |
init(javax.servlet.ServletConfig conf)
|
java.lang.String |
toString()
|
Methods inherited from class javax.servlet.http.HttpServlet |
service |
Methods inherited from class javax.servlet.GenericServlet |
getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
PageServlet
public PageServlet()
init
public void init(javax.servlet.ServletConfig conf)
throws javax.servlet.ServletException
- Specified by:
init
in interface javax.servlet.Servlet
- Overrides:
init
in class FCBaseServlet
- Throws:
javax.servlet.ServletException
toString
public java.lang.String toString()
- Overrides:
toString
in class FCBaseServlet
destroy
public void destroy()
- Specified by:
destroy
in interface javax.servlet.Servlet
- Overrides:
destroy
in class FCBaseServlet