[JSTL/JSP] c:forEach 문 사용시 Property 'param' not found on type java.lang.String 에러

HTTP Status 500 - An exception occurred processing JSP page at line ...

description : The server encountered an internal error that prevented it from fulfilling this request.

Stacktrace: with root cause
javax.el.PropertyNotFoundException: Property 'TempFileName' not found on type java.lang.String 

이런 에러가 뜨는 이유는 보통 EL식에 문제가 있다고 본다. 

예를들어 에러문구 중 아래와 같은 코드가 뜬 경우

12: <div class="rec_list">
13: <c:out value="${recList.get(0).getFileName()}" />
14: <c:forEach var="rec" items=" ${recList}" >
15: <c:out value="${rec.fileName}"/> 
16: </c:forEach>
17: </div>
18: </div>

빨갛게 표시한 부분이 문제이다. 크게보면

 items=" ${recList}"

쌍따옴표와 달러표시 사이에 공백이 있는 것을 확인할 수 있다.

이 외에도 items="recList"  처럼 ${ } 을 빼먹은 경우나,  

items=${recList} 처럼 쌍따옴표를 빼먹은 경우 등이 있겠다.

이하는 추가 에러 메시지 

Stacktrace:

org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)

org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)

javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)

org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)

org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)

org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)

org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)

org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)

org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)

javax.servlet.http.HttpServlet.service(HttpServlet.java:621)

javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)

com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)

org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)

org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

root cause

javax.el.PropertyNotFoundException: Property 'param' not found on type java.lang.String

javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:229)

javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:206)

javax.el.BeanELResolver.property(BeanELResolver.java:317)

javax.el.BeanELResolver.getValue(BeanELResolver.java:85)

org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:104)

org.apache.el.parser.AstValue.getValue(AstValue.java:183)

org.apache.el.parser.AstDynamicExpression.getValue(AstDynamicExpression.java:44)

org.apache.el.parser.AstCompositeExpression.getValue(AstCompositeExpression.java:50)

org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:185)

org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:1026)

...