org.codehaus.groovy.grails.web.pages
Class GroovyPagesServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.springframework.web.servlet.HttpServletBean
              org.springframework.web.servlet.FrameworkServlet
                  org.codehaus.groovy.grails.web.pages.GroovyPagesServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class GroovyPagesServlet
extends FrameworkServlet

NOTE: Based on work done by on the GSP standalone project (https://gsp.dev.java.net/) Main servlet class. Example usage in web.xml: GroovyPagesServlet org.codehaus.groovy.grails.web.pages.GroovyPagesServlet showSource 1 Allows developers to view the intermediade source code, when they pass a showSource argument in the URL (eg /edit/list?showSource=true.

Author:

Troy Heninger, Graeme Rocher Date: Jan 10, 2004

See Also:

Serialized Form

Field Summary

static String	EXCEPTION_MODEL_KEY
static String	SERVLET_INSTANCE

Fields inherited from class org.springframework.web.servlet.FrameworkServlet

DEFAULT_CONTEXT_CLASS, DEFAULT_NAMESPACE_SUFFIX, SERVLET_CONTEXT_PREFIX

Fields inherited from class org.springframework.web.servlet.HttpServletBean

logger

Constructor Summary

GroovyPagesServlet()

Method Summary

protected Writer	createResponseWriter(HttpServletResponse response) Creates a response writer for the given response object
protected void	doService(HttpServletRequest request, HttpServletResponse response)
protected void	handleException(HttpServletRequest request, HttpServletResponse response, Exception exception, Writer out, GroovyPagesTemplateEngine engine) Performs exception handling by attempting to render the Errors view
protected void	initFrameworkServlet()
protected void	renderPageWithEngine(GroovyPagesTemplateEngine engine, HttpServletRequest request, HttpServletResponse response, groovy.text.Template template) Attempts to render the page with the given arguments

Methods inherited from class org.springframework.web.servlet.FrameworkServlet

buildLocaleContext, createWebApplicationContext, createWebApplicationContext, destroy, doDelete, doGet, doOptions, doPost, doPut, doTrace, findWebApplicationContext, getContextAttribute, getContextClass, getContextConfigLocation, getNamespace, getServletContextAttributeName, getUsernameForRequest, getWebApplicationContext, initServletBean, initWebApplicationContext, onApplicationEvent, onRefresh, postProcessWebApplicationContext, processRequest, refresh, setContextAttribute, setContextClass, setContextConfigLocation, setDispatchOptionsRequest, setDispatchTraceRequest, setNamespace, setPublishContext, setPublishEvents, setThreadContextInheritable

Methods inherited from class org.springframework.web.servlet.HttpServletBean

addRequiredProperty, getServletContext, getServletName, init, initBeanWrapper

Methods inherited from class javax.servlet.http.HttpServlet

doHead, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletInfo, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EXCEPTION_MODEL_KEY

public static final String EXCEPTION_MODEL_KEY

See Also:

Constant Field Values

SERVLET_INSTANCE

public static final String SERVLET_INSTANCE

See Also:

Constant Field Values

Constructor Detail

GroovyPagesServlet

public GroovyPagesServlet()

Method Detail

initFrameworkServlet

protected void initFrameworkServlet()
                             throws ServletException,
                                    BeansException

Overrides:

initFrameworkServlet in class FrameworkServlet

Throws:

ServletException

BeansException

doService

protected void doService(HttpServletRequest request,
                         HttpServletResponse response)
                  throws Exception

Specified by:

doService in class FrameworkServlet

Throws:

Exception

renderPageWithEngine

protected void renderPageWithEngine(GroovyPagesTemplateEngine engine,
                                    HttpServletRequest request,
                                    HttpServletResponse response,
                                    groovy.text.Template template)
                             throws IOException,
                                    ServletException

Attempts to render the page with the given arguments

Parameters:

engine - The GroovyPagesTemplateEngine to use

request - The HttpServletRequest

response - The HttpServletResponse

template - The template

Throws:

IOException - Thrown when an I/O exception occurs rendering the page

ServletException - Thrown when an exception occurs in the servlet environment

handleException

protected void handleException(HttpServletRequest request,
                               HttpServletResponse response,
                               Exception exception,
                               Writer out,
                               GroovyPagesTemplateEngine engine)
                        throws ServletException,
                               IOException

Performs exception handling by attempting to render the Errors view

Parameters:

request -

response -

exception - The exception that occured

out - The Writer

engine - The GSP engine @throws IOException Thrown when an I/O exception occurs rendering the page

Throws:

ServletException - Thrown when an exception occurs in the servlet environment

IOException

createResponseWriter

protected Writer createResponseWriter(HttpServletResponse response)

Creates a response writer for the given response object

Parameters:

response - The HttpServletResponse

Returns:

The created java.io.Writer