HTTP状态 500 - 内部服务器错误


类型 异常报告

消息 org.apache.jasper.JasperException: java.lang.NullPointerException

描述 服务器遇到一个意外的情况,阻止它完成请求。

例外情况

org.apache.jasper.JasperException: org.apache.jasper.JasperException: java.lang.NullPointerException
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:582)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:488)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:383)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:331)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	com.qiangxin.action.productDetail.service(productDetail.java:58)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

根本原因。

org.apache.jasper.JasperException: java.lang.NullPointerException
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:582)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:498)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:383)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:331)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:906)
	org.apache.jsp.view.product_005fdetail_jsp._jspService(product_005fdetail_jsp.java:160)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:465)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:383)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:331)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	com.qiangxin.action.productDetail.service(productDetail.java:58)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

根本原因。

java.lang.NullPointerException

):注意 主要问题的全部 stack 信息可以在 server logs 里查看


Apache Tomcat/8.5.91