If you've got a copy of Tomcat installed, look at:
$CATALINA_HOME/webapps/servlets-examples/WEB-INF/classes/filters/SetCharacterEncodingFilter.java
Quoting Randy Eckhoff <[EMAIL PROTECTED]>:
> With the 2.3 servet API, there is a new method:
>
> request.setCharacterEncoding(String encoding)
>
> This lets you tell the server a request's character encoding. It is
> critical that setCharacterEncoding is called BEFORE any
> request.getParameter is called (or getReader). Otherwise, you are at the
> mercy of the appserver for what you get back on the getParameter call.
> For example, if setCharacterEncoding is not called, you could get a null
> value back on getParameter("foo").
>
> When you post directly to a jsp (MVC 1), the "entry point" for servicing
> the page is ultimately the page itself. So JspCompilers have
> request.setCharacterEncoding("whatever"); in the generated java code as
> one of the first things that get done.
>
> But with Struts, the entry point is not the JSP but rather the action.
> You eventually forward to the view but by that point, you've already
> processed the request.
>
> So my question is this: For struts actions and forms and anything else
> struts, is there 1 common place where we can override something to call
> request.setCharacterEncoding(). Is RequestProcessor.processPreprocess
> the place to do it? I grepped the struts 1.2.4 source code and only
> found a setCharacterEncoding on upload\MultipartRequestWrapper.java.
> That method is a no-op. Ideally, we only want to override 1 method that
> will handle the request's encoding for form validation and the action
> handlers, etc. If processPreprocess is NOT the place to do this,
> where/how should we do this? The ActionServlet instance perhaps that
> calls RequestProcessor.process()? The action handler knows what encoding
> to use so somehow, I would have to tell the request processor the
> "encoding" unless I can override something in the ActionServlet before
> process() gets called.
>
> I did *some* searching through the struts source code and in
> RequestProcessor, the call to processPopulate does a getParameter:
> if ((request.getParameter(Constants.CANCEL_PROPERTY) != null) ||
> (request.getParameter(Constants.CANCEL_PROPERTY_X) != null))
> {
>
> So calling setCharacterEncoding has to be done before processPopulate().
>
> Thanks!
>
> Randy
--
Kris Schneider <mailto:[EMAIL PROTECTED]>
D.O.Tech <http://www.dotech.com/>
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