Type Exception Report
Message org.hibernate.exception.GenericJDBCException: could not execute query
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
javax.servlet.ServletException: org.hibernate.exception.GenericJDBCException: could not execute query wfs.hvez.vezerles.AbsztraktConforgOldal.processRequest(AbsztraktConforgOldal.java:105) wfswk.vezerles.AbsztraktOldal.doGet(AbsztraktOldal.java:101) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Root Cause
org.hibernate.exception.GenericJDBCException: could not execute query org.hibernate.exception.ErrorCodeConverter.handledNonSpecificException(ErrorCodeConverter.java:92) org.hibernate.exception.ErrorCodeConverter.convert(ErrorCodeConverter.java:80) org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) org.hibernate.loader.Loader.doList(Loader.java:1596) org.hibernate.loader.Loader.list(Loader.java:1577) org.hibernate.hql.classic.QueryTranslatorImpl.list(QueryTranslatorImpl.java:890) org.hibernate.impl.SessionImpl.list(SessionImpl.java:844) org.hibernate.impl.QueryImpl.list(QueryImpl.java:74) wfswk.vegyes.perz.AlapDAO.findAll(AlapDAO.java:25) wfs.hvez.vezerles.AbsztraktConforgOldal.processRequest(AbsztraktConforgOldal.java:78) wfswk.vezerles.AbsztraktOldal.doGet(AbsztraktOldal.java:101) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Root Cause
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 867Â 930 milliseconds ago. The last packet sent successfully to the server was 8 milliseconds ago. java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) com.mysql.jdbc.Util.handleNewInstance(Util.java:403) com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990) com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3517) com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3417) com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3860) com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2524) com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2675) com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2465) com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1915) com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2023) org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:107) org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:107) org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:120) org.hibernate.loader.Loader.getResultSet(Loader.java:1272) org.hibernate.loader.Loader.doQuery(Loader.java:391) org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:218) org.hibernate.loader.Loader.doList(Loader.java:1593) org.hibernate.loader.Loader.list(Loader.java:1577) org.hibernate.hql.classic.QueryTranslatorImpl.list(QueryTranslatorImpl.java:890) org.hibernate.impl.SessionImpl.list(SessionImpl.java:844) org.hibernate.impl.QueryImpl.list(QueryImpl.java:74) wfswk.vegyes.perz.AlapDAO.findAll(AlapDAO.java:25) wfs.hvez.vezerles.AbsztraktConforgOldal.processRequest(AbsztraktConforgOldal.java:78) wfswk.vezerles.AbsztraktOldal.doGet(AbsztraktOldal.java:101) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Root Cause
java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2969) com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3427) com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3417) com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3860) com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2524) com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2675) com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2465) com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1915) com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2023) org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:107) org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:107) org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:120) org.hibernate.loader.Loader.getResultSet(Loader.java:1272) org.hibernate.loader.Loader.doQuery(Loader.java:391) org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:218) org.hibernate.loader.Loader.doList(Loader.java:1593) org.hibernate.loader.Loader.list(Loader.java:1577) org.hibernate.hql.classic.QueryTranslatorImpl.list(QueryTranslatorImpl.java:890) org.hibernate.impl.SessionImpl.list(SessionImpl.java:844) org.hibernate.impl.QueryImpl.list(QueryImpl.java:74) wfswk.vegyes.perz.AlapDAO.findAll(AlapDAO.java:25) wfs.hvez.vezerles.AbsztraktConforgOldal.processRequest(AbsztraktConforgOldal.java:78) wfswk.vezerles.AbsztraktOldal.doGet(AbsztraktOldal.java:101) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Note The full stack trace of the root cause is available in the server logs.
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