h:dataTable標(biāo)簽用來(lái)生成表格，感覺就和struts的logic：iterator差不多，下面是一般的用法：
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<
h:dataTable?
value
='#{items}'?
var
='item'>
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????
<h:column
>
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????????
<
%--?
left?column?components?--%
>
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????????
<
h:outputText?
value
='#{item.propertyName}'/>
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????
</h:column
>
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?
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????
<
h:column
>
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????????
<
%--?
next?column?components?--%
>
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????????
<
h:outputText?
value
='#{item.anotherPropertyName}'/>
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????
</h:column
>
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?
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????
<
%--?
add?more?columns,?as?desired?--%
>
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</
h:dataTable
>
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其中這個(gè)items可以是一個(gè)集合(其類型可以是array、java.util.List、java.sql.ResultSet、javax.servlet.jsp.jstl.sql.Result、javax.faces.model.DataModel，循環(huán)遍歷所有的item），或者是其他任何非集合的元素（循環(huán)一次）。
注意1）h:dataTable里面只能包含h:column。2）在h:dataTable這種能render子元素的標(biāo)簽中，要顯示原始文本的話，要用<f:verbatim></f:verbatim>將文本包含起來(lái)（或者用h:outputText）。3） <f:facet name="header">和<f:facet name="footer">可以制定表頭和表尾。
h:dataTable有以下這些屬性：
bgcolor
?Background?color?for?the?table
?
border
?Width?of?the?table's?border
?
cellpadding
?Padding?around?table?cells
?
cellspacing
?Spacing?between?table?cells
?
columnClasses
?Comma-separated?list?of?CSS?classes?for?columns
?
first
?Index?of?the?first?row?shown?in?the?table
?
footerClass
?CSS?class?for?the?table?footer
?
frame
?Specification?for?sides?of?the?frame?surrounding?the?table?should?be?drawn;?valid?values:?none,?above,?below,?hsides,?vsides,?lhs,?rhs,?box,?border
?
headerClass
?CSS?class?for?the?table?header
?
rowClasses
?Comma-separated?list?of?CSS?classes?for?columns
?
rules
?Specification?for?lines?drawn?between?cells;?valid?values:?groups,?rows,?columns,?all
?
summary
?Summary?of?the?table's?purpose?and?structure?used?for?non-visual?feedback?such?as?speech
?
var
?The?name?of?the?variable?created?by?the?data?table?that?represents?the?current?item?in?the?value
?
binding,?id,?rendered,?styleClass,?value
?Basic?attributes
?
dir,?lang,?style,?title,?width
?HTML?4.0
?
onclick,?ondblclick,?onkeydown,?onkeypress,?onkeyup,?onmousedown,?onmousemove,?onmouseout,?onmouseover,?onmouseup
?DHTML?events
有一個(gè)很有意思的例子，它可以生成一個(gè)動(dòng)態(tài)可編輯的表格：
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<
h:dataTable?
value
="#{tableData.names}"
?var
="name"
>
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????
<
%--?
checkbox?column?--%
>
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????
<
h:column
>
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<
f:facet?
name
="header"
>
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????????????
<
h:outputText?
value
="#{msgs.editColumn}"
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????????????????style
="font-weight:?bold"
/>
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????????
</
f:facet
>
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????????
<
h:selectBooleanCheckbox?
value
="#{name.editable}"
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????????????onclick
="submit()"
/>
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????
</
h:column
>
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????
<
%--?
last?name?column?--%
>
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????
<
h:column
>
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????????
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????????
<
h:inputText?
value
='#{name.last}'
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????????????
rendered
='#{name.editable}'
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????????????
size
='10'/>
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????????
<h:outputText?value
='#{name.last}'
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????????????
rendered
='#{not?
name.editable}'
/>
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????
</
h:column
>
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????
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</
h:dataTable
>
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<
p
>
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<
h:commandButton?
value
="#{msgs.saveChangesButtonText}"
/>
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事實(shí)上，h:dataTable不是直接操作集合對(duì)象的，而是通過(guò)Table Models來(lái)實(shí)現(xiàn)的。所以我們可以通過(guò)getWrappedData()和setWrappedData（）來(lái)實(shí)現(xiàn)對(duì)modle中對(duì)象的操作，比如下面的一個(gè)方法：
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public
?String?deleteNames()?
{
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????
if
?(
!
getAnyNamesMarkedForDeletion())
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????????
return
?
null
;
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????Name[]?currentNames?
=
?(Name[])?model.getWrappedData();
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????Name[]?newNames?
=
?
new
?Name[currentNames.length?
-
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????????getNumberOfNamesMarkedForDeletion()];
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????
for
(
int
?i
=
?
0
,?j?
=
?
0
;?i?
<
?currentNames.length;?
++
i)?
{
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????????Name?name?
=
?(Name)?currentNames[i];
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????????????
if
?(
!
name.isMarkedForDeletion())?
{
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????????????newNames[j
++
]?
=
?name;
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????????}
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????}
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????model.setWrappedData(newNames);
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????
return
?
null
;
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???}
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}
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同時(shí)如果我們要對(duì)集合數(shù)據(jù)進(jìn)行排序和過(guò)濾的話，我們必須通過(guò)繼承一種table model來(lái)實(shí)現(xiàn)。