Doubt in c:url

[sakthikumaran navakumar]

Hi,

Can you please tell me wat will be output of this code.

<c:set var =�first� value = �Hidden Cursor�/>
<c:set var =�last� value = �Crounching Pixels�/>

<c:url value =�\inputComments.jsp?first=${"first"}&last=${"last"}� var = �inputURL�/>

Input URL : ${"inputURL"}


In the HFSJ page 456 they have explained this example for Using <c:url> with a query string. There they have used first=${first}&last=${last} and in printing the output they have used it as Input URL : ${inputURL}.

I wanted to know what will be impact of using the EL values with a double quotes " ".

[Chandra Bhatt]

[sakthikumaran]:
I wanted to know what will be impact of using the EL values with a double quotes " ".


It is error. Your JSP page wont get translated.

Thanks,

[sakthikumaran navakumar]

Can you please explain me how does that actual EL part with out double quotes works.?

[Chandra Bhatt]

Following works well

<c:url value ="/inputComments.jsp?first=${'first'}&last=${'last'}" var="inputURL"/>
Input URL : ${inputURL}

If you write ${"inputURL"} or ${'inputURL'} it is evaluated as String and
inputURL will be the output on the browser.

Following also works:

 
<c:url value ="/inputComments.jsp?first=${\"first\"}&last=${\"last\"}" var="inputURL"/>

Thanks,
[ July 28, 2007: Message edited by: Chandra Bhatt ]

[Chandra Bhatt]

From JSP Specification:

Quoting in Attributes Quotation is done consistently regardless of whether
the attribute value is a literal or a request-time attribute expression.
Quoting can be used in attribute values regardless of whether they are
delimited using single or double quotes. It is only required as described
below.

A � is quoted as \�. This is required within a single quote-delimited
attribute value.

A � is quoted as \�. This is required within a double quote-delimited
attribute value.

A\ is quoted as \\

Thanks,

[sakthikumaran navakumar]

Thank you so much for your explaination!!!