Java Reference
In-Depth Information
Note
The
charEncoding
attribute is required when accessing absolute URL resources where the protocol
is not HTTP and where the encoding is not ISO-8859-1.
The <c:param>Action
The
<c:import>
,
<c:url>
, and
<c:redirect>
actions explained later in this section all deal with URLs.
The
<c:param>
action is used to pass request parameters and is used as a nested tag in the body
of either the
<c:import>
,
<c:url>
, or
<c:redirect>
action. The
<c:param>
action also does the URL
encoding.
Here's the syntax with a parameter value specified in the attribute
value
.
<c:param name="name" value="value"/>
Here's the syntax with a parameter value specified in the body content.
<c:param name="name">
parameter value
</c:param>
Table
3-21
describes the attributes of
<c:param>
.
Table 3-21.
<c:param> Attributes
Name
Type
Description
name
String
Name of the query string parameter
value
String
Value of the parameter
Listing 3-52 illustrated how you can use
<c:import>
instead of
<jsp:include>
. You can also specify
request parameters for included files with the
<jsp:param>
action, as shown in Listing 3-52.
Listing 3-52. Using <jsp:param>
<body>
<jsp:include page='/WEB-INF/jsp/company/companyHeader.jsp'>
<jsp:param name='user'
value='<%=session.getAttribute("userName")%>'/>
</jsp:include>
<%-- Page content goes here--%>
<jsp:include page='/WEB-INF/jsp/company/companyFooter.jsp'/>
</body>
Listing 3-53 illustrates how you can use
<c:param>
instead of
<jsp:param>
.
