RE: How to generically forward to page you came from?
Alex,
Here is one approach. When linking to the generic action class, include the
URI of the page that the link is on as a parameter. For example:
<% String referrer = request.getRequestURI();
request.setAttribute("referrer", referrer); %>
Click here
Within the action, parse the parameter that designates the referrer, and
construct an ActionForward back to it: For example:
return new ActionForward(request.getParameter("referrer"));
Error checking code ommitted for the sake of brevity.
David
-Original Message-
From: Alex Colic [mailto:[EMAIL PROTECTED]]
Sent: Thursday, August 30, 2001 4:04 PM
To: Struts
Subject: How to generically forward to page you came from?
Hi,
I am creating a generic action class that after it is finished it needs to
forward to the page that called it. I have tried "mapping.getInput()" but
obviously since I haven't specified a input page in the struts.xml for the
action class I can't use that. Any thoughts?
Alex
RE: input in XML config
Forget what I said last night about calling setInput() from the ActionForm. Setting the input in the ActionForm's validate method flagrantly violates Struts' MVC architecture; flow of control should always be defined by the controller servlet and struts-config.xml. But saving request scope variables as part of an ActionForm isn't always an option. I think the best solution to Max's problem is to define the input as the full path to the original action, then make sure that the form coming from that page includes the necessary parameters to recreate the original action page. The following hypothetical situation should make this a bit clearer: - You are running an online bookstore backed by a database. To display books you have defined an action as "viewbook.do". The action takes one parameter, an ISBN, so the user ends up seeing the url http://server/viewbook.do?ISBN=123. - On the book's page, you have a form asking users to rate the book. Part of the rating form uses a select box generated from a database of possible ratings (this list, all the possible ratings, is the kind of request scope variable that one would *not* want to store as part of a form; the list doesn't pertain to data the user entered, it merely defines *possible* input values). - When the user submits the ratings form, an ActionForm validates the input. In struts-config, the input attribute for the "save ratings" action is defined as "viewbook.do". Now suppose that the ratings ActionForm generates errors... in order for the "view book" action to successfully recreate the page that the ratings form was submitted from, it needs an ISBN parameter. The solution to that seems fairly simple--just drop in a hidden ISBN field in the ratings form. What I don't like about this solution is that information essential to successfully defining the flow of control--a parameter that is part of the definition of the input page--has to be in an HTML form. Perhaps a feature for Struts 1.1 could be a special input value that signified "use the form's HTTP referrer header, including all request parameters, as the input for this form". Or, quite possibly, there is an even more elegant solution that someone out there has discovered. Cheers, David -Original Message- From: Ted Husted [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 05, 2001 9:11 PM To: [EMAIL PROTECTED] Subject: Re: input in XML config Could you create these request scope beans as properties of the ActionForm? David Noll wrote: > > Max, > > I don't know if it's the official way to do it, but in my ActionForm's > validate() method, I call mapping.setInput() with the full path of the > original Action. An important thing to note is that if your Action class > pre-populates an ActionForm for the page, you should check for the > ActionForm's existence before populating it. > > All that said, it does seem a bit cumbersome to go through all that merely > to return to a dynamically generated input page if there are form errors. > Does anyone on the list know of a cleaner way to achieve this? > > David > > -- > David Noll, Public Digital > [EMAIL PROTECTED] > > -Original Message- > From: LORENA MASSIMO [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, June 05, 2001 6:37 AM > To: '[EMAIL PROTECTED]' > Subject: input in XML config > > Hi, > in an action mapping i'd like to reexecute the complete action instead of a > simple jsp when the validate method of the form fails, because i need to > create some beans having request scope > So my question is... > Is it possible to have an action in the input fiele of a mapping instead of > a simple jsp? > thanks Max
RE: input in XML config
Max, I don't know if it's the official way to do it, but in my ActionForm's validate() method, I call mapping.setInput() with the full path of the original Action. An important thing to note is that if your Action class pre-populates an ActionForm for the page, you should check for the ActionForm's existence before populating it. All that said, it does seem a bit cumbersome to go through all that merely to return to a dynamically generated input page if there are form errors. Does anyone on the list know of a cleaner way to achieve this? David -- David Noll, Public Digital [EMAIL PROTECTED] -Original Message- From: LORENA MASSIMO [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 05, 2001 6:37 AM To: '[EMAIL PROTECTED]' Subject: input in XML config Hi, in an action mapping i'd like to reexecute the complete action instead of a simple jsp when the validate method of the form fails, because i need to create some beans having request scope So my question is... Is it possible to have an action in the input fiele of a mapping instead of a simple jsp? thanks Max
RE: Any hosting sites that use Struts?
I can recommend Servlets.net quite strongly. They recently switched to Resin 1.25 which works very well with Struts. I've successfully hosted a 50,000 session/month site with them. They are a small shop, but their support staff is responsive and they offer a plethora of services--CVS, MySQL, Postgres, &c. In short, I would use them for anything that didn't require a dedicated box. Cheers, David -Original Message- From: Jeff Trent [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 30, 2001 12:12 PM To: [EMAIL PROTECTED] Subject: Any hosting sites that use Struts? Anyone know of a hosting facility that offers Java web hosting + Struts?
RE: Hide and Show Problem
Your problem is being caused by differences in the JavaScript Document Object Model between browsers. The simplest solution is to use a JavaScript library which accounts for such differences, such as the DynAPI: http://sourceforge.net/projects/dynapi. That said, this is not really a Struts-related problem and would best be discussed somewhere like this: http://forums.devshed.com/ Cheers, David -Original Message- From: Dinesh Chaturvedi [mailto:[EMAIL PROTECTED]] Sent: Tuesday, May 22, 2001 7:25 AM To: [EMAIL PROTECTED] Subject: RE: Hide and Show Problem well doing it on server side does not make sense i want it on client side. Thanks & Regards Dinesh Chaturvedi Programmer Analyst Nihilent Technologies Pvt Ltd. Pune 6054452 Ext 349 -Original Message- From: William Jaynes [mailto:[EMAIL PROTECTED]] Sent: Tuesday, May 22, 2001 4:36 PM To: [EMAIL PROTECTED] Subject: Re: Hide and Show Problem I would do this on the server side by wrapping the text box in a logic tag. But perhaps you have a requirement to do it on the client. - Original Message - From: "Dinesh Chaturvedi" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, May 22, 2001 4:56 AM Subject: Hide and Show Problem Hello Friends i am facing a problem.i want to hide and show a text box (html element ) at run time. using both netscape 4.x and IE 4.x the problem is it works fine with IE if i use a style sheet with the element and at run time using java script functions i can say for hide document.forms[0].element.style.dispaly="none"; for show document.forms[0].element.style.dispaly="block"; but when i try to use style with netscape 4.x it does not support style sheet. also it is difficult or rather not possible to access a div tag usin netscape. CAN any body of you help me find a way out of this problem or can anybody suggest a newsgroup or place where i can put forward my problem.please help.i am getting frustrated with the problem i have tried many ways but Dinesh
JDBC driver specific functionality/GenericConnections
Hello, I would like to access functionality specific to the MM MySql driver in an application that uses Struts' datasource pool and am having a bit of troubling casting a GenericConnection back to an org.gjt.mm.mysql.Connection. Casting from a GenericConnection to an org.gjt.mm.mysql.Connection results in a class cast exception; casting a Statement or PreparedStatement generated by the GenericConnection produces a null pointer exception. I am working with Struts 1.0-beta-1 and MM Mysql 2.0.4. If it sheds any light on the problem, the MM function I would like to access is PreparedStatement.getLastInsertID(). Has anyone successfully prosecuted this? On a tangential note--why is the getConnection() method in GenericConnection private? Were it public, I assume I could use it to get an MM Connection and execute MySql specific functions to my heart's content. Thanks is advance, David
RE: sending user to a anchor on a page.
Perhaps an interstitial jsp like this?
<%
String url = request.getParameter("url");
String anchor = request.getParameter("anchor");
String whereTo = url + "#" + anchor;
response.sendRedirect(whereTo);
%>
referenced in action.xml as:
...
...
If your servlet engine throws an exception on the redirect, you could
alternately write in a meta refresh tag, with the downside that the
interstitial would show up in the browser.
D.
--
David Noll, Public Digital
[EMAIL PROTECTED]
-Original Message-
From: Oleson, Rex [mailto:[EMAIL PROTECTED]]
Sent: Monday, December 18, 2000 5:57 PM
To: '[EMAIL PROTECTED]'
Subject: sending user to a anchor on a page.
I was wondering if there was any way to send a user to a specific
portion of
a page after the action class has executed.
as an example lets say that I have a user registration page. If the
user
inputs some bugus information I would like to return
them to that exact area of the page that they need to correct the
info.
So there is the page
userReg.jsp
The Form class
UserRegForm.java
the Action class
UserRegAction.java
what I was thinking for the action.xml doc is something like
where zip is the name of an anchor on userReg.jsp
This does not work though
all I get is a 404 error and nothing in the webservers output or log
files.
Any help or suggestions would greatfully appreciated.
Thank you,
Rex Oleson
RE: path info
Thanks for the response. The path mapped servlets didn't work when I tried them; the same error was thrown, which I think makes sense. In a url like this: /do/action/whatever the path info starts at the second slash, and struts is setup to expect a leading slash in an action path. An eventual solution might be to allow regex matching in the action path attribute. Then a struts action class would only need to delete the "real" action path from the beginning of the path info to get path info relative to the action. If that sounds like a reasonable idea to the list, I'll put a feature request in bugrat. BTW, the whole point of this exercise is to create a means of browsing a database that is friendly to search engines that don't recognize pages with query strings. Cheers, David -Original Message- From: Craig R. McClanahan [mailto:[EMAIL PROTECTED]] Sent: Monday, December 04, 2000 8:02 PM To: [EMAIL PROTECTED] Subject: Re: path info David Noll wrote: > Hello, > > Hopefully this is a no-brainer. How can I configure struts to call an > action, and include the path info? EG - my normal action is called at: > >server/action.do > > I would like to call this action like this: > > server/action.do/some/extra/random/parameters/etc > > and later on, in my action class access that extra info via > javax.servlet.http.HttpServletRequest.getPathInfo(). With out of the > box servlet init params and action.xml values, I get an error > specifying that an invalid path was requested. I'm developing against > struts .5, if it makes a difference. Well, it's simple but not necessarily obvious ... The servlet spec's definition of extension mapping is that it only looks for an extension after the last slash. In effect, that means you cannot use path info with extension mapped servlets. Alternatives: * Use path-mapped servlets instead (maybe "/do/*"). * Pass the extra info as a query string rather than as extra path info. > > Thanks, > David > Craig McClanahan
path info
Hello, Hopefully this is a no-brainer. How can I configure struts to call an action, and include the path info? EG - my normal action is called at: server/action.do I would like to call this action like this: server/action.do/some/extra/random/parameters/etc and later on, in my action class access that extra info via javax.servlet.http.HttpServletRequest.getPathInfo(). With out of the box servlet init params and action.xml values, I get an error specifying that an invalid path was requested. I'm developing against struts .5, if it makes a difference. Thanks, David -- David Noll, Public Digital [EMAIL PROTECTED]
Re: mailing list accessable from web
http://www.mail-archive.com/struts-user%40jakarta.apache.org/ - Original Message - From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, November 17, 2000 7:37 AM Subject: mailing list accessable from web Hello I must admit that I'm not used to using mailing lists. I prefer news groups, so that I can easily browse and search old messages, for example using www.deja.com. Is there any way as of today to browse and search the mailing list for struts-user / struts-dev using my browser ? If not, is there any plans for a news group / mailing list archive on the web ? Just asking Alf Hogemark
