我正在尝试为链接创建一个条件,如果长度不 = 0,则显示描述,但出现语法错误,代码为:
<c:if test="#{fn:length(#{pqfn:format('ACTUAL_LINK')}) != 0}">
<h:outputLink id="link1" value="#{pqfn:format('LINK_DESCRIPTION')}"/>
</c:if>
我收到的错误是:
Caused by: org.apache.el.parser.ParseException: Encountered " <ILLEGAL_CHARACTER> "{ "" at line 1, column 14.
Was expecting one of:
"." ...
")" ...
"[" ...
"," ...
">" ...
"gt" ...
"<" ...
"lt" ...
">=" ...
"ge" ...
"<=" ...
"le" ...
"==" ...
"eq" ...
"!=" ...
"ne" ...
"&&" ...
"and" ...
"||" ...
"or" ...
"*" ...
"+" ...
"-" ...
"/" ...
"div" ...
"%" ...
"mod" ...