SSM框架-javax.el.PropertyNotFoundException: 类型[com.lc.crud.bean.Employee]上找不到属性[department]

在进行ssm框架的前端jsp页面获取数据时报如下错误

javax.el.PropertyNotFoundException: 类型[com.lc.crud.bean.Employee]上找不到属性[department]
	javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:260)
	javax.el.BeanELResolver$BeanProperties.access$300(BeanELResolver.java:212)
	javax.el.BeanELResolver.property(BeanELResolver.java:333)
	javax.el.BeanELResolver.getValue(BeanELResolver.java:92)
	org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:113)
	org.apache.el.parser.AstValue.getValue(AstValue.java:169)
	org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:190)
	org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:944)
	org.apache.jsp.WEB_002dINF.views.list_jsp._jspx_meth_c_005fforEach_005f0(list_jsp.java:269)
	org.apache.jsp.WEB_002dINF.views.list_jsp._jspService(list_jsp.java:172)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1282)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1037)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:980)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:742)
	org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:712)
	org.apache.jsp.index_jsp._jspService(index_jsp.java:113)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

页面代码：

<c:forEach items="${pageInfo.list}" var="emp">
                    <tr>
                        <th>${emp.empId}</th>
                        <th>${emp.empName}</th>
                        <th>${emp.gender}</th>
                        <th>${emp.email}</th>
                        <th>${emp.department.deptName}</th>
                        <th>
                            <button class="btn-primary btn-sm">
                                <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span> 编辑
                            </button>
                            <button class="btn-danger btn-sm">
                                <span class="glyphicon glyphicon-trash" aria-hidden="true"></span> 删除
                            </button>
                        </th>
                    </tr>
                    </c:forEach>

解决办法：

发现Employee类中没有定义department的get方法。补充完成后，问题解决。

所以前端jsp的c标签库获取数据时会调用原先类中的get方法获取属性。