Jstl Tag Collection Traversal summary

After reading this article, the traversal of the front end collection, you can basically handle 90%.

1, rows=list<product>

The list contains entities, the most common, not explained.

<c:foreach items= "${requestscope.rows}" var = "item" ><tr><td>${item.productname}</td> </ Tr> </c:forEach>

2, rows=list<map<string,object>>

The list contains a map, compared to the above, the element does not exist in the form of the entity field, but in the form of a map key value pairs exist. Traverse in exactly the same way as above.

<c:foreach items= "${requestscope.rows}" var = "item" ><tr><td>${item.productname}</td> </ Tr> </c:forEach>

3, rows=list<list<product>>

list, which is generally used for the interface to display a number of different products, each product is a list. Compared to the above, there is a layer of loops.

<c:foreach items= "${requestscope.rows}" var = "itemList" >            <table class= "contenttable" width= "1000" Border= "0" cellpadding= "0" cellspacing= "0" >            <c:foreach items= "${itemlist}" var = "item" >          <tr> <td>${item.productname}</td> </tr></c:forEach>            </table>            </c:foreach >

4, the first selected rows=list<product>

The first product is selected by default.

<c:foreach items= "${requestscope.rows}" var = "itemList" varstatus= "st" >             <c:choose>            <c:when Test= "${st.index ==0}" >            <div class= "fq_boxs fl  selected" >                  <p class= "Termname" > Sub ${ Itemlist.term} period                        <span class= "Termtip" > 0 interest </span>    </p>            </div>            </c: when>            <c:otherwise>            <div class= "Fq_boxs fl" >                    <p class= "Termname" > Sub ${ Itemlist.term} period            <span class= "Termtip" > 0 interest </span></p>            </div>            </c:o therwise>            </c:choose>            </c:forEach>

The World martial arts, only fast not broken. Knowledge is not easy, be good at summing up.

Jstl Tag Collection Traversal summary