Type Exception Report
Message An exception occurred processing [ItemDetailView.jsp] at line [23]
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
org.apache.jasper.JasperException: An exception occurred processing [ItemDetailView.jsp] at line [23] 20: <link rel="stylesheet" type="text/css" href="https://use.fontawesome.com/releases/v5.4.2/css/all.css"> 21: <script src='https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/js/bootstrap.bundle.min.js'></script> 22: 23: <title>������������������������<%= item.getItemName() %></title> 24: 25: </head> 26: Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:610) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:499) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327) javax.servlet.http.HttpServlet.service(HttpServlet.java:623) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) musicProject.controller.ItemDetailController.doGet(ItemDetailController.java:37) javax.servlet.http.HttpServlet.service(HttpServlet.java:529) javax.servlet.http.HttpServlet.service(HttpServlet.java:623) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
Root Cause
java.lang.NullPointerException: Cannot invoke "musicProject.entity.Item.getItemName()" because "item" is null org.apache.jsp.ItemDetailView_jsp._jspService(ItemDetailView_jsp.java:148) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:623) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327) javax.servlet.http.HttpServlet.service(HttpServlet.java:623) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) musicProject.controller.ItemDetailController.doGet(ItemDetailController.java:37) javax.servlet.http.HttpServlet.service(HttpServlet.java:529) javax.servlet.http.HttpServlet.service(HttpServlet.java:623) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
Note The full stack trace of the root cause is available in the server logs.