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Thread: I have an issue with IReport and NetBeans

  1. #1
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    Default I have an issue with IReport and NetBeans

    Hello,
    I have created a report using Jasper Report Designer BUT when i import it in my project i have an error "JRException unkown column name", i have checked the connection with the database and is ok, i have the jdbc jar file added too.I have also added the jar files from Jasper lib and dist folder.It works fine when i preview it.
     reportbtn.addActionListener(new ActionListener() {
     
                @Override
                public void actionPerformed(ActionEvent e) {
     
                    try{
     
                     JasperDesign jd = JRXmlLoader.load("C:\\Users\\Mario\\myreport.jrxml");
     
                     String que = "SELECT * FROM customers";
     
                     JRDesignQuery newQuery = new JRDesignQuery();
                     newQuery.setText(que);
                     jd.setQuery(newQuery);
     
                     JasperReport jr = JasperCompileManager.compileReport(jd);
                     JasperPrint jp = JasperFillManager.fillReport(jr,null,getConn());
     
                     JasperViewer.viewReport(jp,false);
     
                    }catch(JRException ex){
                        JOptionPane.showConfirmDialog(null, ex);
                    }
                }
            });

    Thanks in advance.


  2. #2
    Administrator copeg's Avatar
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    Default Re: I have an issue with IReport and NetBeans

    JRException unkown column name
    Sounds like it cannot find the column name for a particular database table, so my first piece of advice would be to verify the database, table name, and column names. Second piece of advice would be to post all information - a full stack trace for starters. Issues like this are quite difficult to debug remotely without all information supplied in the most concise way as possible.

  3. #3
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    Default Re: I have an issue with IReport and NetBeans

    Quote Originally Posted by copeg View Post
    Sounds like it cannot find the column name for a particular database table, so my first piece of advice would be to verify the database, table name, and column names. Second piece of advice would be to post all information - a full stack trace for starters. Issues like this are quite difficult to debug remotely without all information supplied in the most concise way as possible.
    I have already checked the db name and column names.When i finished the report design i saw it in preview and it was working fine and also exported a pdf with the data stored in database.

    log4j:WARN No appenders could be found for logger (net.sf.jasperreports.engine.xml.JRXmlDigesterFactory).
    log4j:WARN Please initialize the log4j system properly.
    net.sf.jasperreports.engine.JRException: Unknown column name : customers_name
    	at net.sf.jasperreports.engine.JRResultSetDataSource.getColumnIndex(JRResultSetDataSource.java:400)
    	at net.sf.jasperreports.engine.JRResultSetDataSource.getColumnIndex(JRResultSetDataSource.java:400)
    	at net.sf.jasperreports.engine.JRResultSetDataSource.getFieldValue(JRResultSetDataSource.java:130)
    	at net.sf.jasperreports.engine.fill.JRFillDataset.setOldValues(JRFillDataset.java:1358)
    	at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:1259)
    	at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:1235)
    	at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1588)
    	at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:149)
    	at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:939)
    	at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:852)
    	at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:87)
    	at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:446)
    	at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:849)
    	at jframedesign.JFrameDesign$1.actionPerformed(JFrameDesign.java:78)
    	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
    	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
    	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    	at java.awt.Component.processMouseEvent(Component.java:6505)
    	at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
    	at java.awt.Component.processEvent(Component.java:6270)
    	at java.awt.Container.processEvent(Container.java:2229)
    	at java.awt.Component.dispatchEventImpl(Component.java:4861)
    	at java.awt.Container.dispatchEventImpl(Container.java:2287)
    	at java.awt.Component.dispatchEvent(Component.java:4687)
    	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
    	at java.awt.Container.dispatchEventImpl(Container.java:2273)
    	at java.awt.Window.dispatchEventImpl(Window.java:2719)
    	at java.awt.Component.dispatchEvent(Component.java:4687)
    	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
    	at java.awt.EventQueue.access$200(EventQueue.java:103)
    	at java.awt.EventQueue$3.run(EventQueue.java:694)
    	at java.awt.EventQueue$3.run(EventQueue.java:692)
    	at java.security.AccessController.doPrivileged(Native Method)
    	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
    	at java.awt.EventQueue$4.run(EventQueue.java:708)
    	at java.awt.EventQueue$4.run(EventQueue.java:706)
    	at java.security.AccessController.doPrivileged(Native Method)
    	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    	at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
    	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
    Thanks in advance.

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    Default Re: I have an issue with IReport and NetBeans

    net.sf.jasperreports.engine.JRException: Unknown column name : customers_name
    The exception indicates the column 'customers_name' cannot be found. If you've verified it exists in your database, I would recommend stripping down the problem to do some experimenting and debugging - for instance remove the reliance of that column (and to avoid confusion specify column names in your query rather than 'SELECT *'), or just strip the report down to a single column and validate it works, then build the report back up.

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    Default Re: I have an issue with IReport and NetBeans

    Quote Originally Posted by copeg View Post
    The exception indicates the column 'customers_name' cannot be found. If you've verified it exists in your database, I would recommend stripping down the problem to do some experimenting and debugging - for instance remove the reliance of that column (and to avoid confusion specify column names in your query rather than 'SELECT *'), or just strip the report down to a single column and validate it works, then build the report back up.
    SOLVED, report query was like "Select customers.id AS customer_id, . . ." and the query in NetBeans project was "Select * FROM customers".
    THANKS mate for the help!!!

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