I need to solve this problem. We are using the spring framework so perhaps a good custom spring tag is available to write....don't know. The html below is expected by the front end html specialist....
Note below that this is the dynamic html that I need to generate where only the strings bgCatX_Y will change in value. Also, the src="<filepath>" will be dynamic. I already created a Java hashmap to store these type of things and I will iterate through the map to define these dynamic sections. The rest of this html will all be static. There will be alot of output
here as the map contains data for alot of iterations of these divs. I was thinking
about simply encapsulating all of this in a simple tag.
such that the html inserted into the jsp page would simply be my custom tagname of
<bi:buildimagefilepath />
Are their any other approaches that you would suggest, in your experience that may be better or
easier to maintain as far as building the right kind of tag? Would there perhaps be a JSTL or
Spring tag that I could build that would be better or is it really a matter of preference?
Looking forward to your input.
Dan
<div id="bgCat1_0" class="listBoxWrapper ep_catSubSwitch">
<div id="catSlider1" style="width:500px; height:60px; overflow:hidden; display:block">
<div id="catSlidePane1">
<div>
<img class="ep_imgThumb imgInsert" onclick="highlightThumb(th
</div>
</div>
</div>
</div>
<div id="bgCat1_1" class="listBoxWrapper ep_catSubSwitch">
<div id="catSlider1" style="width:500px; height:60px; overflow:hidden; display:block">
<div id="catSlidePane1">
<div>
<img class="ep_imgThumb imgInsert" onclick="highlightThumb(th
</div>
</div>
</div>
</div>
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I don't use the spring framework. But I think you can use "Tag files". Look at
http://onjava.com/pub/a/on
http://java.sun.com/j2ee/1
http://today.java.net/pub/
> bgCatX_Y will change in value.
Could you put the values in a List ?
For example (I didn't test this), if your list is bgCatList , then in your JSP you could use
<%@ taglib prefix="myTags" tagdir="/WEB-INF/tags" %>
<myTags:myTest items="${bgCatList}" path="${ctxPath}" />
rrz@871311:
I like your approach as the html markup remains visible to the designer.
Although, I would like to populate a bean instead of using a tag. It makes more sense to me.
The DataBean class will contain a TreeMap. The TreeMap will be ordered the way I want it.
So, I want to be able to iterate over all the keys of the map. The keys will be the ${items} in the below JSTL. The ${path} needs to be the value of each key.
How do I code this correctly so that the ${items} correspond to the Set of keys in the TreeMap in the bean and the ${path} is the value returned by doing a TreeMap.get(key)?
<jsp:useBean id="dataBean" </jsp:useBean>
<c:forEach var="current" items="${items}">
<div id="${current}" class="listBoxWrapper ep_catSubSwitch">
<div id="catSlider1" style="width:500px; height:60px; overflow:hidden; display:block">
<div id="catSlidePane1">
<div>
<img class="ep_imgThumb imgInsert" onclick="highlightThumb(th
</div>
</div>
</div>
</div>
</c:forEach>
>The keys will be the ${items} in the below JSTL
>How do I code this correctly so that the ${items} correspond to the Set of keys in the TreeMap in the bean
I am confused by those statements.
The forEach tag evalutes its body for each element in a collection. The items attribute accepts the collection.
For a Map , the current element is exposed as a java.itil.Map.Entry
I am guessing that you want the outer div to have its id value to be the key from the Map. Tell me if I guessed wrong.
If databean is the id of your bean, then you can use
rrz@871311:
I think you guessed right. It looks like items is equivalent to a collection of these Map Entrys where each Map entry is a key/value pair. Hence the current.key and the current.value you refer to.
I am going to test this out tommorrow and if it works, I look forward to giving you full credit.
You have been an excellent resource for me.
I will let you know.
Dan
rzz@871311:
The following code:
<jsp:useBean id="directoryStore" class="com.fabuso.model.Di
<c:forEach var="current" items="${directoryStore.or
<div id="${current.key}" class="listBoxWrapper ep_catSubSwitch">
<div id="catSlider1" style="width:500px; height:60px; overflow:hidden; display:block">
<div id="catSlidePane1">
<div>
<img class="ep_imgThumb imgInsert" onclick="highlightThumb(th
</div>
</div>
</div>
</div>
</c:forEach>
produces the following output in the browser.:
<c:forEach var="current" items="[bgCat001_000=[C:\P
<div id="" class="listBoxWrapper ep_catSubSwitch">
<div id="catSlider1" style="width:500px; height:60px; overflow:hidden; display:block">
<div id="catSlidePane1">
<div>
<img class="ep_imgThumb imgInsert" onclick="highlightThumb(th
</div>
</div>
</div>
</div>
</c:forEach>
You can see how the items are getting set to the key/value pairs where the keys are correct and the values are appropriately lists.
However, the current.key is "" and the current.value is "".....what is wrong here?
It seems like we're close.
Thanks,
Dan
Do you have this line
<%@ taglib prefix="c" uri="http://java.sun.com/j
on your page ?
Do have the JSTL jars in your lib folder ?
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by: danw11Posted on 2009-10-17 at 15:54:18ID: 25597914
I was just looking at an article describing writing a JSTL tag extending BodyTagSupport. I wonder if I could do it this way such that my custom tag would look like this. This seems to be the best approach for separating business logic from view code in that the tag would completely handle populating the vars and iterating as many times as necessary. But not sure about actual implementation here....need a real expert on this one.....I think:
<mt:mytag>
<div id="<VAR1>" class="listBoxWrapper ep_catSubSwitch">
<div id="catSlider1" style="width:500px; height:60px; overflow:hidden; display:block">
<div id="catSlidePane1">
<div>
<img class="ep_imgThumb imgInsert" onclick="highlightThumb(th
</div>
</div>
</div>
</div>
</mt:mytag>