Yes it works well.Thanks very much
complete code :
@Inject
private ComponentResources resource;
@Inject
private AssetSource assetSource;
private Asset weatherImagePath;
/**
* @param weatherImagePath the weatherImagePath to set
*/
public void setWeatherImagePath(Asset weatherImagePath) {
this.weatherImagePath = weatherImagePath;
}
public Asset getWeatherImagePath(){
return this.assetSource.findAsset(
this.resource.getBaseResource(),
"context:images/weather/"+this.weatherPath, null);
}
public void onActivate(String id){
//bc is load from DB
if (lw.hnSunny.equals(bc.getLogWeather())){
this.weatherPath="hn2_sunny.gif";
}else if (lw.hnIce.equals(bc.getLogWeather()))
{
this.weatherPath="hn2_ice.gif";
}else if (lw.hnCloudy.equals(bc.getLogWeather()))
{
this.weatherPath="hn2_cloudy.gif";
}
}
2007/11/20, Josh Canfield <[EMAIL PROTECTED]>:
>
> Injecting the asset as you've done doesn't make a lot of sense since the
> annotation @Path is a compile time construct. So what you are getting in
> your annotation is probably null, or whatever your default for weatherPath
> was.
>
> The advantage to using AssetResource is that you can look up assets at
> runtime...
>
> Josh
>
> On Nov 19, 2007 5:34 AM, Chris Lewis <[EMAIL PROTECTED]> wrote:
>
> > I've not seen AssetResource - what is the advantage to using it like
> > this as opposed simply to injecting the asset?
> >
> > lasitha wrote:
> > > On Nov 19, 2007 2:37 PM, Doublel <[EMAIL PROTECTED]> wrote:
> > >
> > >> public void onActivate(String id){
> > >> if (lw.hnSunny.equals(bc.getLogWeather())){
> > >> this.weatherPath="logweath.gif";
> > >> ...
> > >> @Inject
> > >> @Path("context:/images/"+ weatherPath )
> > >> private Asset trackback;
> > >>
> > >> I want to implement image can dynamic by var weatherPath
> > >>
> > >
> > > Hello, i'd try injecting the AssetSource service directly into your
> > > page/component and using it to look up the resource dynamically.
> > >
> >
> http://tapestry.apache.org/tapestry5/tapestry-core/apidocs/org/apache/tapestry/services/AssetSource.html
> > >
> > > I haven't tested this, but something like:
> > >
> > > @Inject ComponentResources resources;
> > > @Inject AssetSource assetSource;
> > >
> > > Asset getTrackback() {
> > > return assetSource.findAsset(
> > > resources.getBaseResource(),
> > > "context:/images/" + calculateWeatherPath(),
> > > null);
> > > }
> > >
> > > It actually may work with just null for the first parameter (the
> > > resource base) too.
> > >
> > > Cheers,
> > > lasitha
> > >
> > > ---------------------------------------------------------------------
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> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > >
> > >
> > >
> >
> >
>
>
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得与失都是生活
