試題詳解

100 Assume the custom tag my:errorProne always throws a java.lang.RuntimeException with the message "File not found." An error page has been configured for this JSP page. Which option prevents the exception thrown by my:errorProne from invoking the error page mechanism, and outputs the message "File not found" in the response?
(A) ＜c:try catch="ex">＜my:errorProne />＜/c:try>${ex.message}
(B) ＜c:catch var="ex">＜my:errorProne />＜/c:catch>${ex.message}
(C) ＜c:try>＜my:errorProne />＜/c:try>＜c:catch var= "ex" />$ {ex.message}
(D) ＜c :try>＜my:errorProne />＜c:catch var= "ex" />${ex.message}＜/c :try>
(E) ＜my:errorProne>＜c:catch var= "ex">${ex.message}＜/c:catch>＜/my:errorProne>