JasperStudio crosstab nullpointerexception

Question

Ich verwende Jaspersoft Studio 6.2, um einen Bericht zu erstellen. Ich bin neu und experimentiere nur mit Kreuztabellen. Ich habe eine Kreuztabelle auf die Band gelegt. Die Datenquelle ist postgresql, die Abfrage läuft gut in postgresql und in Dataset and Query Dialog (Felder erkannt). Die Kreuztabelle hat eine Zeilengruppe und eine Spaltengruppe.

Bearbeiten: Ich habe die Abfrage geändert, so dass keine Datenquelle, aber immer noch postgresql Abfrage benötigt, so dass Sie es überprüfen können. Ich habe den gleichen Fehler.

Die Quelle

<?xml version="1.0" encoding="UTF-8"?> 
    <!-- Created with Jaspersoft Studio version 6.2.0.final using JasperReports Library version 6.2.0 --> 
    <!-- 2016-04-15T09:31:15 --> 
    <jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="test8" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="49d2f486-e168-4ed8-b00a-ba04aabc1354"> 
     <property name="com.jaspersoft.studio.data.sql.tables" value=""/> 
     <property name="com.jaspersoft.studio.data.defaultdataadapter" value="datamart"/> 
     <style name="Crosstab_CH" mode="Opaque" backcolor="#F0F8FF"> 
      <box> 
       <pen lineWidth="0.5" lineColor="#000000"/> 
       <topPen lineWidth="0.5" lineColor="#000000"/> 
       <leftPen lineWidth="0.5" lineColor="#000000"/> 
       <bottomPen lineWidth="0.5" lineColor="#000000"/> 
       <rightPen lineWidth="0.5" lineColor="#000000"/> 
      </box> 
     </style> 
     <style name="Crosstab_CG" mode="Opaque" backcolor="#BFE1FF"> 
      <box> 
       <pen lineWidth="0.5" lineColor="#000000"/> 
       <topPen lineWidth="0.5" lineColor="#000000"/> 
       <leftPen lineWidth="0.5" lineColor="#000000"/> 
       <bottomPen lineWidth="0.5" lineColor="#000000"/> 
       <rightPen lineWidth="0.5" lineColor="#000000"/> 
      </box> 
     </style> 
     <style name="Crosstab_CT" mode="Opaque" backcolor="#005FB3"> 
      <box> 
       <pen lineWidth="0.5" lineColor="#000000"/> 
       <topPen lineWidth="0.5" lineColor="#000000"/> 
       <leftPen lineWidth="0.5" lineColor="#000000"/> 
       <bottomPen lineWidth="0.5" lineColor="#000000"/> 
       <rightPen lineWidth="0.5" lineColor="#000000"/> 
      </box> 
     </style> 
     <style name="Crosstab_CD" mode="Opaque" backcolor="#FFFFFF"> 
      <box> 
       <pen lineWidth="0.5" lineColor="#000000"/> 
       <topPen lineWidth="0.5" lineColor="#000000"/> 
       <leftPen lineWidth="0.5" lineColor="#000000"/> 
       <bottomPen lineWidth="0.5" lineColor="#000000"/> 
       <rightPen lineWidth="0.5" lineColor="#000000"/> 
      </box> 
     </style> 
     <queryString> 
      <![CDATA[select '2016-04-01'::date as UsageDate, 'a' as ProductName, 1 as CustomerKey 
    union all select '2016-04-01'::date as UsageDate, 'b' as ProductName, 2 as CustomerKey 
    union all select '2016-05-01'::date as UsageDate, 'a' as ProductName, 2 as CustomerKey 
    union all select '2016-05-01'::date as UsageDate, 'b' as ProductName, 3 as CustomerKey]]> 
     </queryString> 
     <field name="usagedate" class="java.sql.Date"/> 
     <field name="productname" class="java.lang.String"/> 
     <field name="customerkey" class="java.lang.Integer"/> 
     <background> 
      <band splitType="Stretch"/> 
     </background> 
     <title> 
      <band height="79" splitType="Stretch"/> 
     </title> 
     <pageHeader> 
      <band height="35" splitType="Stretch"/> 
     </pageHeader> 
     <columnHeader> 
      <band height="61" splitType="Stretch"/> 
     </columnHeader> 
     <detail> 
      <band height="125" splitType="Stretch"/> 
     </detail> 
     <columnFooter> 
      <band height="45" splitType="Stretch"/> 
     </columnFooter> 
     <pageFooter> 
      <band height="54" splitType="Stretch"/> 
     </pageFooter> 
     <summary> 
      <band height="220" splitType="Stretch"> 
       <crosstab> 
        <reportElement x="272" y="20" width="200" height="200" uuid="27b59abe-7800-4d75-bfde-8ba98dcb63a2"> 
         <property name="com.jaspersoft.studio.layout" value="com.jaspersoft.studio.editor.layout.VerticalRowLayout"/> 
        </reportElement> 
        <rowGroup name="productname1" width="60" totalPosition="End"> 
         <bucket class="java.lang.String"> 
          <bucketExpression><![CDATA[$F{productname}]]></bucketExpression> 
         </bucket> 
         <crosstabRowHeader> 
          <cellContents mode="Opaque" style="Crosstab_CH"> 
           <textField> 
            <reportElement x="0" y="0" width="60" height="20" uuid="4d3b9a26-c9ae-4d91-9f9b-046051fe68ef"/> 
            <textFieldExpression><![CDATA[$V{productname1}]]></textFieldExpression> 
           </textField> 
          </cellContents> 
         </crosstabRowHeader> 
         <crosstabTotalRowHeader> 
          <cellContents mode="Opaque" style="Crosstab_CT"> 
           <staticText> 
            <reportElement x="0" y="0" width="60" height="20" forecolor="#FFFFFF" uuid="0454ed72-f427-4178-96da-15c3c0120059"/> 
            <text><![CDATA[Total productname1]]></text> 
           </staticText> 
          </cellContents> 
         </crosstabTotalRowHeader> 
        </rowGroup> 
        <columnGroup name="usagedate1" height="20" totalPosition="End"> 
         <bucket class="java.sql.Date"> 
          <bucketExpression><![CDATA[$F{usagedate}]]></bucketExpression> 
         </bucket> 
         <crosstabColumnHeader> 
          <cellContents mode="Opaque" style="Crosstab_CH"> 
           <textField> 
            <reportElement x="0" y="0" width="60" height="20" uuid="f96354ac-6d2c-4b37-bd70-5f12a1a0d83b"/> 
            <textFieldExpression><![CDATA[$V{usagedate1}]]></textFieldExpression> 
           </textField> 
          </cellContents> 
         </crosstabColumnHeader> 
         <crosstabTotalColumnHeader> 
          <cellContents mode="Opaque" style="Crosstab_CT"> 
           <staticText> 
            <reportElement x="0" y="0" width="60" height="20" forecolor="#FFFFFF" uuid="9a5d6927-1279-48b9-85a2-4632d3cf1d73"/> 
            <text><![CDATA[Total usagedate1]]></text> 
           </staticText> 
          </cellContents> 
         </crosstabTotalColumnHeader> 
        </columnGroup> 
        <measure name="customerkey_MEASURE1" class="java.lang.Integer"> 
         <measureExpression><![CDATA[$F{customerkey}]]></measureExpression> 
        </measure> 
        <crosstabCell width="60" height="20"> 
         <cellContents mode="Opaque" style="Crosstab_CD"> 
          <textField> 
           <reportElement x="0" y="0" width="60" height="20" uuid="5692496d-54c7-473e-b903-56ab136f392e"/> 
           <textFieldExpression><![CDATA[$V{customerkey_MEASURE1}]]></textFieldExpression> 
          </textField> 
         </cellContents> 
        </crosstabCell> 
        <crosstabCell width="60" height="20" columnTotalGroup="usagedate1"> 
         <cellContents mode="Opaque" style="Crosstab_CT"> 
          <textField> 
           <reportElement x="0" y="0" width="60" height="20" forecolor="#FFFFFF" uuid="ab4186ba-507c-43d1-bd39-36f39ce22e37"/> 
           <textFieldExpression><![CDATA[$V{customerkey_MEASURE1}]]></textFieldExpression> 
          </textField> 
         </cellContents> 
        </crosstabCell> 
        <crosstabCell width="60" height="20" rowTotalGroup="productname1"> 
         <cellContents mode="Opaque" style="Crosstab_CT"> 
          <textField> 
           <reportElement x="0" y="0" width="60" height="20" forecolor="#FFFFFF" uuid="ecfc705d-bd32-43e2-b1b5-3dec58bdd84e"/> 
           <textFieldExpression><![CDATA[$V{customerkey_MEASURE1}]]></textFieldExpression> 
          </textField> 
         </cellContents> 
        </crosstabCell> 
        <crosstabCell width="60" height="20" rowTotalGroup="productname1" columnTotalGroup="usagedate1"> 
         <cellContents mode="Opaque" style="Crosstab_CT"> 
          <textField> 
           <reportElement x="0" y="0" width="60" height="20" forecolor="#FFFFFF" uuid="803b9a3e-bb42-4ed4-8d43-ea8451f0f678"/> 
           <textFieldExpression><![CDATA[$V{customerkey_MEASURE1}]]></textFieldExpression> 
          </textField> 
         </cellContents> 
        </crosstabCell> 
       </crosstab> 
      </band> 
     </summary> 
    </jasperReport> 

Die Datasetabfrage:

select '2016-04-01'::date as UsageDate, 'a' as ProductName, 1 as CustomerKey 
    union all select '2016-04-01'::date as UsageDate, 'b' as ProductName, 2 as CustomerKey 
    union all select '2016-05-01'::date as UsageDate, 'a' as ProductName, 2 as CustomerKey 
    union all select '2016-05-01'::date as UsageDate, 'b' as ProductName, 3 as CustomerKey 

Fehlerprotokoll, wenn ich Vorschau klicken

net.sf.jasperreports.engine.JRException: java.lang.NullPointerException 
     at com.jaspersoft.studio.editor.preview.view.control.ReportControler.fillReport(ReportControler.java:524) 
     at com.jaspersoft.studio.editor.preview.view.control.ReportControler.access$20(ReportControler.java:499) 
     at com.jaspersoft.studio.editor.preview.view.control.ReportControler$5.run(ReportControler.java:380) 
     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) 
    Caused by: java.lang.NullPointerException 
     at net.sf.jasperreports.crosstabs.fill.calculation.BucketingService.addMeasure(BucketingService.java:276) 
     at net.sf.jasperreports.crosstabs.fill.calculation.BucketingService.<init>(BucketingService.java:135) 
     at net.sf.jasperreports.crosstabs.fill.calculation.CrosstabBucketingService.<init>(CrosstabBucketingService.java:59) 
     at net.sf.jasperreports.engine.fill.JRFillCrosstab.createService(JRFillCrosstab.java:507) 
     at net.sf.jasperreports.engine.fill.JRFillCrosstab.initBucketingService(JRFillCrosstab.java:682) 
     at net.sf.jasperreports.engine.fill.JRFillCrosstab$JRFillCrosstabDataset.customInitialize(JRFillCrosstab.java:1191) 
     at net.sf.jasperreports.engine.fill.JRFillElementDataset.initialize(JRFillElementDataset.java:148) 
     at net.sf.jasperreports.engine.fill.JRCalculator.initializeDataset(JRCalculator.java:556) 
     at net.sf.jasperreports.engine.fill.JRCalculator.initializeVariables(JRCalculator.java:322) 
     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:241) 
     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:119) 
     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:558) 
     at net.sf.jasperreports.engine.fill.BaseFillHandle$ReportFill.run(BaseFillHandle.java:119) 
     at java.lang.Thread.run(Thread.java:745) 

Answer 1

ich endlich herausgefunden, was das Problem ist. Das liegt daran, dass ich die Aggregation im Kreuztabellenassistenten auf die Anzahl der Zählungen festgelegt hat. Es sieht gut aus, bis ich den Bericht in der Vorschau anzeigen kann. Wenn Sie jedoch auf die Kreuztabelle doppelklicken und in Umriss - Kreuztabellen - Maß klicken Sie auf das Maß, überprüfen Sie in den Eigenschaften die Berechnung für dieses Maß, es ist leer! Ändere es in Distinct count (oder was auch immer), dann läuft es gut. Ich denke, das kann ein Fehler sein, weil ich es reproduzieren kann. BTW die Maßnahme ist Art von java.lang.integer, nicht sicher, ob das zählt.