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## 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, EventListener, Servlet, ServletConfig, ApplicationListener<ContextRefreshedEvent>

    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

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