我试图让这个旧的JSP项目在Tomcat 7,JRE7中运行,但是在项目的大部分页面中出现这个错误。请问任何人都可以解释一下发生了什么?JSTL EL无效表达式:javax.el.ELException:在Tomcat中7
代码如下:
<c:set var="structClass">
<c:if test="${empty param.class}">template</c:if>
<c:if test="${not empty param.class}">${param.class}</c:if>
</c:set>
错误的样子:
org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: org.apache.jasper.JasperException: /WEB-INF/templates/template.jsp (line: 77, column: 4) "${empty param.class}" contains invalid expression(s): javax.el.ELException: Failed to parse the expression [${empty param.class}] org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:585) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455)
现在错误更改为=> org.apache.jasper.JasperException:javax.servlet.ServletException:javax.servlet.jsp.JspException:java.lang.NoSuchFieldError:deferredExpression –
http://geekomatic.ch/2011/ 03/22/1300804080000.html我添加了-Dorg.apache.el.parser.SKIP_IDENTIFIER_CHECK = true并解决了问题....感谢您的链接! –
$ {something.new}也会由于'new'关键字而导致同样的错误。谢谢。 –