I am about 90% finished with a web app for a client. In discussions yesterday they decided to add an "at-a-glance" section to each page of the web site. You can think of this as a news feed that will sit on the left sidebar, it will have the same information on every page, but generating the information will require some business logic, and thus an Action.
I can easily add the layout for this into the tile that services the pages on the site.... It will be a simple collection to iterate over, so the JSP is simple as well.
The Complicated Part: adding a collection to the request scope for each of my existing actions. There are 15 actions existing.
I dreamed that it would be possible to add a tiles definition that included the result of an Action as opposed to a JSP (well, more accurately, included a JSP after being sent through an action first). Essentially, this means 2 actions are executed on each request.... the request's action... and the action to populate the data sidebar.
I tried to do this, by using a tag like this: <tiles:put name="at-a-glance" value="/common/at-a-glance.do"/>
I get the following error: Exception in /common/at-a-glance.do Cannot forward after response has been committed
I am intermediately experienced with servlets, and I know that servlet includes are somewhat possible... but I'm obviously not experienced enough to solve this problem. Thanks for your help!
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