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when set request attribute and name it "case"

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yxu22 Posts: 25	Posted 12:54 Mar 07, 2013 \| Professor Sun: when I wrote like this in servlet: request.setAttribute("case",1); And I wrote EL in JSP: <c:set var="caa" value="${requestScope.case}" /> I got an Error: HTTP Status 500 - /WEB-INF/info.jsp (line: 13, column: 0) "${requestScope.case}" contains invalid expression(s): javax.el.ELException: Failed to parse the expression [${requestScope.case}] Is "case" a special word in the request or in the EL? After I change the code as follows, the error is fixed. request.setAttribute("caa", 1); <c:set var="caa" value="${requestScope.caa}" />
cysun Posts: 2935	Posted 13:53 Mar 07, 2013 \| "case" is not a reserved words for EL as far as I know (see http://docs.oracle.com/javaee/6/tutorial/doc/bnail.html), but it is a reserved word for Java ("case" in a switch statement), so maybe that's the reason for the exception.

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Message

yxu22

Posts: 25

Posted 12:54 Mar 07, 2013 |

Professor Sun:

when I wrote like this in servlet:

request.setAttribute("case",1);

And I wrote EL in JSP:

<c:set var="caa" value="${requestScope.case}" />

I got an Error:

HTTP Status 500 - /WEB-INF/info.jsp (line: 13, column: 0) "${requestScope.case}" contains invalid expression(s): javax.el.ELException: Failed to parse the expression [${requestScope.case}]

Is "case" a special word in the request or in the EL?

After I change the code as follows, the error is fixed.

request.setAttribute("caa", 1);

<c:set var="caa" value="${requestScope.caa}" />

cysun

Posts: 2935

Posted 13:53 Mar 07, 2013 |

"case" is not a reserved words for EL as far as I know (see http://docs.oracle.com/javaee/6/tutorial/doc/bnail.html), but it is a reserved word for Java ("case" in a switch statement), so maybe that's the reason for the exception.