Struts only injects those when the container calls .inject() on the object,
when is that going to happen on a singleton? This is what I had to do
inside a JSP Tag Library to get it to work:
/**
* Process the start tag
*
* @return EVAL_BODY_BUFFERED
*/
@Override
public int doStartTag () throws JspException {
Dispatcher.getInstance().getContainer().inject(this);
return super.doStartTag();
} //doStartTag
So I know Struts just doesn't do it willy nilly anytime you define the
annotation.
(*Chris*)
On Sat, Dec 18, 2010 at 12:23 PM, Dave Newton <davelnew...@gmail.com> wrote:
> With an @Inject, the same way you can insert things like Strings or
> configuration values.
>
> On Sat, Dec 18, 2010 at 3:19 PM, Chris Pratt <thechrispr...@gmail.com
> >wrote:
>
> > How would Struts know to inject the helper class? It wouldn't be
> creating
> > it, it would conceivably be created either as a singleton (static or
> > otherwise) and those configuration and action mapping classes are
> critical
> > to the functioning of the method. I'd love to find a way to move this
> out
> > of my inheritance hierarchy, so do tell?
> > (*Chris*)
> >
> > On Sat, Dec 18, 2010 at 12:14 PM, Dave Newton <davelnew...@gmail.com>
> > wrote:
> >
> > > There's no reason it couldn't work in a "helper class", though; you can
> > > define arbitrary beans etc. inside the config.
> > >
> > > Dave
> > >
> > > On Sat, Dec 18, 2010 at 3:12 PM, Chris Pratt <thechrispr...@gmail.com
> > > >wrote:
> > >
> > > > I assume what you want to do is turn an action name into a URL.
> Here's
> > > > what
> > > > I've used before, I'm not sure if there's a better way, but this was
> > > > adapted
> > > > from code inside struts. You could put it in your action's super
> class
> > > to
> > > > make it more reusable, but because of the injection required it
> > wouldn't
> > > > really work in a helper class.
> > > > (*Chris*)
> > > >
> > > > /**
> > > > * Struts: Inject a flag as to whether Dynamic Method Invocation is
> > > > enabled
> > > > *
> > > > * @param enable "true" to enable
> > > > */
> > > > @Inject(StrutsConstants.STRUTS_ENABLE_DYNAMIC_METHOD_INVOCATION)
> > > > public void setEnableDynamicMethodInvocation (String enable) {
> > > > enableDynamicMethodInvocation = Boolean.parseBoolean(enable);
> > > > } //setEnableDynamicMethodInvocation
> > > >
> > > > /**
> > > > * Struts: Inject the Struts Configuration for looking up the proper
> > > > Action
> > > > *
> > > > * @param configuration The Struts Configuration
> > > > */
> > > > @Inject
> > > > public void setConfiguration (Configuration configuration) {
> > > > this.configuration = configuration;
> > > > } //setConfiguration
> > > >
> > > > /**
> > > > * Struts: Inject the Action Mapper
> > > > *
> > > > * @param actionMapper The Action Mapper
> > > > */
> > > > @Inject
> > > > public void setActionMapper (ActionMapper actionMapper) {
> > > > this.actionMapper = actionMapper;
> > > > } //setActionMapper
> > > >
> > > > /**
> > > > * Process the Action Attribute
> > > > *
> > > > * @param ctx The Action Context
> > > > * @param stack The Value Stack
> > > > * @param action The action attribute value
> > > > * @param namespace The namespace attribute value
> > > > * @return The action attribute of the generated form
> > > > */
> > > > protected String processAction (ActionContext ctx,ValueStack
> > > > stack,String action,String namespace) {
> > > > HttpServletRequest req =
> > (HttpServletRequest)pageContext.getRequest();
> > > > HttpServletResponse res =
> > > > (HttpServletResponse)pageContext.getResponse();
> > > > if(action == null) {
> > > > // no action supplied, default to the current request
> > > > ActionInvocation invoke =
> > > >
> > >
> >
> (ActionInvocation)stack.getContext().get(ActionContext.ACTION_INVOCATION);
> > > > if(invoke != null) {
> > > > ActionProxy proxy = invoke.getProxy();
> > > > action = proxy.getActionName();
> > > > namespace = proxy.getNamespace();
> > > > } else {
> > > > String uri = req.getRequestURI();
> > > > action = uri.substring(uri.lastIndexOf('/'));
> > > > }
> > > > }
> > > > String method = "";
> > > > if(enableDynamicMethodInvocation) {
> > > > int bang;
> > > > if((bang = action.lastIndexOf('!')) != -1) {
> > > > method = action.substring(bang + 1);
> > > > action = action.substring(0,bang);
> > > > }
> > > > }
> > > > if(namespace == null) {
> > > > namespace = "";
> > > > }
> > > > ActionConfig config =
> > > >
> > >
> >
> configuration.getRuntimeConfiguration().getActionConfig(namespace,action);
> > > > if(config != null) {
> > > > return
> UrlHelper.buildUrl(actionMapper.getUriFromActionMapping(new
> > > > ActionMapping(action,namespace,method,null)),req,res,null);
> > > > } else if(action != null) {
> > > > return UrlHelper.buildUrl(action,req,res,null);
> > > > }
> > > > return null;
> > > > } //processAction
> > > >
> > > >
> > > >
> > > > On Fri, Dec 17, 2010 at 1:58 PM, Ken McWilliams <
> > > ken.mcwilli...@gmail.com
> > > > >wrote:
> > > >
> > > > > I want <s:url> tag like functionality from within my action, so I
> can
> > > > > build a url with parameters so I can return it as a JSON result.
> > > > >
> > > > > So is there a method I can call from perhaps an AwareInterface that
> > can
> > > > > accomplish this?
> > > > >
> > > > >
> > > > >
> ---------------------------------------------------------------------
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> > > > > For additional commands, e-mail: user-h...@struts.apache.org
> > > > >
> > > > >
> > > >
> > >
> >
>
