HTTP Status 500 – Internal Server Error


Type Exception Report

Message An exception occurred processing [/WEB-INF/tags/core/common/seo.tag] at line [66]

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: An exception occurred processing [/WEB-INF/tags/core/common/seo.tag] at line [66]

63:             }
64:         }
65:         //根据cat_id查询是否关联栏目
66:         Map cMap = db.map("select channel_id from wcm_common_channel_news_channel where cat_id = ?",new Object[]{newsMap.get("cat_id")});
67:         if(cMap!=null){
68:             nmap=db.map("select name from wcm_common_channel where id = ?",new Object[]{cMap.get("channel_id")});
69:         }else{


Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:610)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:489)
	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:764)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	com.jerei.website.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:87)

Root Cause

javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.NullPointerException
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:654)
	org.apache.jsp.news.news_002ddetail_jsp._jspService(news_002ddetail_jsp.java:940)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	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:764)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	com.jerei.website.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:87)

Root Cause

java.lang.NullPointerException
	org.apache.jsp.tag.web.core.common.seo_tag.doTag(seo_tag.java:185)
	org.apache.jsp.news.news_002ddetail_jsp._jspService(news_002ddetail_jsp.java:154)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	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:764)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	com.jerei.website.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:87)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/9.0.56