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Affichage des articles associés au libellé object is nullengine.query.JRJdbcQueryExecuter JRDesignQuery

Jasper Raport bug on mac

net.sf.jasperreports.engine.query.JRJdbcQueryExecuter <init> WARNING: The supplied java.sql.Connection object is null. I've been using Jaspersoft paired with Java beans for my reports and everything is going well. It was only when I checked the logs, which can be viewed by the client, that I noticed that there is something wrong. In the code below, the highlighted line, it checks if there is an SQL connection.   Since I don't use SQL it returns a warning message:  JRJdbcQueryExecuter - The supplied java.sql.Connection object is null.  How can the SQL connection validation be prevented? this part of code works for me !!! JasperDesign jd = JRXmlLoader . load ( "C:\\Users\\USER\\DOCUMENTS\\ATHLETICS\\participants.jrxml" ); String sql = "SET @s:=0; select @s:=@s+1 POSITION, CHESTNUMBER AS 'CHEST NUMBER', FULLNAMES AS 'PARTICIPANT', TEAM AS 'TEAM'," + " PHONE AS 'PHONE'...