org.apache.jasper.JasperException: javax.el.PropertyNotFoundException: Property 'minnormalrange' not

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最新推荐文章于 2023-02-23 23:13:35 发布

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本文讨论了在Java Web项目中遇到的一个常见问题：EL表达式与Model对象属性名不匹配导致的异常。通过实例分析，展示了如何正确配置和使用EL表达式来避免此类错误，并提供了解决方案。

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java web项目，有个model，有如下属性：

minnormalrange、maxnormalrange

错误信息如下：

org.apache.jasper.JasperException: javax.el.PropertyNotFoundException: Property 'minnormalrange' not found on type java.lang.String
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549)
	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:722)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	java.lang.reflect.Method.invoke(Unknown Source)
	net.bull.javamelody.JspWrapper.invoke(JspWrapper.java:116)
	net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:250)
	$Proxy12.forward(Unknown Source)
	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:1157)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:927)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
	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:722)
	net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:381)
	net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:381)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

root cause

一直以为是页面上的EL表达式写错了，最后发现错误在controller里面：

  mv.addObject("alarminfo1", “alarminfo1”);
  mv.addObject("alarminfo2", “alarminfo2”);
  mv.addObject("alarminfo3", “alarminfo3”);
  mv.addObject("alarminfo4", “alarminfo4”);
  mv.addObject("alarminfo5", “alarminfo5”);
  mv.addObject("alarminfo6", “alarminfo6”);