HTTP Status 500 – Internal Server Error


Type 异常报告

消息 java.lang.reflect.InvocationTargetException

描述 服务器遇到一个意外的情况,阻止它完成请求。

Exception

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	cn.itcast.servlet.BaseServlet.service(BaseServlet.java:60)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

java.lang.reflect.InvocationTargetException
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:498)
	cn.itcast.servlet.BaseServlet.service(BaseServlet.java:44)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

java.lang.RuntimeException: java.sql.SQLException: Communications link failure

The last packet successfully received from the server was 9,053,490 milliseconds ago.  The last packet sent successfully to the server was 9,053,491 milliseconds ago. Query: select count(*) from t_book where 1=1 and press like ? Parameters: [%中国电力出版社%]
	cn.itcast.goods.book.service.BookService.findByPress(BookService.java:137)
	cn.itcast.goods.book.web.servlet.BookServlet.findByPress(BookServlet.java:166)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:498)
	cn.itcast.servlet.BaseServlet.service(BaseServlet.java:44)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

java.sql.SQLException: Communications link failure

The last packet successfully received from the server was 9,053,490 milliseconds ago.  The last packet sent successfully to the server was 9,053,491 milliseconds ago. Query: select count(*) from t_book where 1=1 and press like ? Parameters: [%中国电力出版社%]
	org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:320)
	org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:349)
	org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:210)
	cn.itcast.jdbc.TxQueryRunner.query(TxQueryRunner.java:23)
	cn.itcast.goods.book.dao.BookDao.findByCriteria(BookDao.java:224)
	cn.itcast.goods.book.dao.BookDao.findByPress(BookDao.java:162)
	cn.itcast.goods.book.service.BookService.findByPress(BookService.java:135)
	cn.itcast.goods.book.web.servlet.BookServlet.findByPress(BookServlet.java:166)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:498)
	cn.itcast.servlet.BaseServlet.service(BaseServlet.java:44)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Note 主要问题的全部 stack 信息可以在 server logs 里查看


Apache Tomcat/9.0.16