webwork.dispatcher
Class ServletDispatcher

java.lang.Object
  extended byjavax.servlet.GenericServlet
      extended byjavax.servlet.http.HttpServlet
          extended bywebwork.dispatcher.ServletDispatcher
All Implemented Interfaces:
java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class ServletDispatcher
extends javax.servlet.http.HttpServlet

Main dispatcher servlet. It works in three phases: first propagate all parameters to the command JavaBean. Second, call execute() to let the JavaBean create the result data. Third, delegate to the JSP that corresponds to the result state that was chosen by the JavaBean. The command JavaBeans can be found in a package prefixed with either of the package names in the comma-separated "packages" servlet init parameter. Modified by Raymond Lai (alpha2_valen@yahoo.com) on 1 Nov 2003: modified wrapRequest() to set the character encoding of HttpServletRequest using the parameter "webwork.i18n.encoding" in webwork.properties.

Version:
$Revision: 1.68 $
Author:
Rickard Öberg (rickard@middleware-company.com), Matt Baldree (matt@smallleap.com)
See Also:
Serialized Form

Field Summary
protected static org.apache.commons.logging.Log log
           
static java.lang.String STACK_HEAD
          After a view is processed the value of the stack's head is put into the request attributes with this key.
 
Constructor Summary
ServletDispatcher()
           
 
Method Summary
protected  java.lang.String getHTMLErrorMessage(java.lang.Throwable t)
          Return an HTML error message for the throwable
 void init(javax.servlet.ServletConfig config)
          Initialize dispatcher servlet
 void service(javax.servlet.http.HttpServletRequest aRequest, javax.servlet.http.HttpServletResponse aResponse)
          Service a request.
 
Methods inherited from class javax.servlet.http.HttpServlet
doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service
 
Methods inherited from class javax.servlet.GenericServlet
destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

STACK_HEAD

public static final java.lang.String STACK_HEAD
After a view is processed the value of the stack's head is put into the request attributes with this key.

See Also:
Constant Field Values

log

protected static org.apache.commons.logging.Log log
Constructor Detail

ServletDispatcher

public ServletDispatcher()
Method Detail

init

public void init(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException
Initialize dispatcher servlet

Parameters:
config -
Throws:
javax.servlet.ServletException

service

public void service(javax.servlet.http.HttpServletRequest aRequest,
                    javax.servlet.http.HttpServletResponse aResponse)
             throws javax.servlet.ServletException
Service a request. The request is first checked to see if it is a multi-part. If it is, then the request is wrapped so WW will be able to work with the multi-part as if it was a normal request. Next, we will process all actions until an action returns a non-action which is usually a view. For each action in a chain, the action's context will be first set and then the action will be instantiated. Next, the previous action if this action isn't the first in the chain will have its attributes copied to the current action.

Parameters:
aRequest -
aResponse -
Throws:
javax.servlet.ServletException

getHTMLErrorMessage

protected java.lang.String getHTMLErrorMessage(java.lang.Throwable t)
Return an HTML error message for the throwable

Parameters:
t - Throwable
Returns:
A String with an error message


Copyright © 2001-2003 WebWork All Rights Reserved.