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JasperReports: (SubReport) Das angegebene Objekt java.sql.Connection ist null

2016-03-22 4 views
1

Ich benutze JesperRports, um einen Bericht mit SubReport darin zu erstellen, aber es funktioniert nicht und der Code sieht gut aus.JasperReports: (SubReport) Das angegebene Objekt java.sql.Connection ist null

Die Warnung, die ich bekomme, ist: The supplied java.sql.Connection object is null.

Hier ist meine vollständige Code:

MasterTeste.jrxml

<?xml version="1.0" encoding="UTF-8"?> 
<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="MasterTeste" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="e976d12d-4c1b-4cfd-900a-6ac502f80b50"> 
    <parameter name="DS" class="java.util.List"> 
     <defaultValueExpression><![CDATA[$F{lstCours}]]></defaultValueExpression> 
    </parameter> 
    <queryString> 
     <![CDATA[]]> 
    </queryString> 
    <field name="nom" class="java.lang.String"> 
     <fieldDescription><![CDATA[nom]]></fieldDescription> 
    </field> 
    <field name="progres" class="java.lang.String"> 
     <fieldDescription><![CDATA[progres]]></fieldDescription> 
    </field> 
    <field name="score" class="java.lang.String"> 
     <fieldDescription><![CDATA[score]]></fieldDescription> 
    </field> 
    <field name="lstCours" class="java.util.List"> 
     <fieldDescription><![CDATA[lstCours]]></fieldDescription> 
    </field> 
    <detail> 
     <band height="180" splitType="Stretch"> 
      <staticText> 
       <reportElement mode="Opaque" x="0" y="3" width="555" height="26" backcolor="#666666" uuid="06a43d96-317c-4a59-bfae-d014050e3955"/> 
       <text><![CDATA[]]></text> 
      </staticText> 
      <staticText> 
       <reportElement x="3" y="6" width="65" height="20" uuid="7df685f6-8e54-4147-ac6e-52eae09577c0"/> 
       <textElement> 
        <font size="15" isBold="true"/> 
       </textElement> 
       <text><![CDATA[Section : ]]></text> 
      </staticText> 
      <staticText> 
       <reportElement x="256" y="6" width="68" height="20" uuid="7cbd59f2-280d-4e8f-84db-5a7bf0425596"/> 
       <textElement> 
        <font size="15" isBold="true"/> 
       </textElement> 
       <text><![CDATA[Progres : ]]></text> 
      </staticText> 
      <staticText> 
       <reportElement x="434" y="6" width="60" height="20" uuid="b666bed5-48c7-4edb-ae70-5b582587e4f6"/> 
       <textElement> 
        <font size="15" isBold="true"/> 
       </textElement> 
       <text><![CDATA[Score :]]></text> 
      </staticText> 
      <textField> 
       <reportElement x="71" y="6" width="178" height="20" uuid="cb1fa244-3296-40d3-afd9-ee28d29c798d"/> 
       <textElement> 
        <font size="13"/> 
       </textElement> 
       <textFieldExpression><![CDATA[$F{nom}]]></textFieldExpression> 
      </textField> 
      <textField> 
       <reportElement x="329" y="6" width="57" height="20" uuid="4d667ac4-cd25-4f1f-a1a5-5b354ccc00b9"/> 
       <textElement> 
        <font size="13"/> 
       </textElement> 
       <textFieldExpression><![CDATA[$F{progres}]]></textFieldExpression> 
      </textField> 
      <textField> 
       <reportElement x="500" y="6" width="55" height="20" uuid="3e771498-10a4-4f4c-9305-cd639de1b4e5"/> 
       <textElement> 
        <font size="13"/> 
       </textElement> 
       <textFieldExpression><![CDATA[$F{score}]]></textFieldExpression> 
      </textField> 
      <subreport> 
       <reportElement positionType="Float" x="0" y="36" width="555" height="140" isRemoveLineWhenBlank="true" backcolor="#99CCFF" uuid="33184f19-8225-428f-88ba-a488753fd445"/> 
       <subreportParameter name="DS1"> 
        <subreportParameterExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($P{DS})]]></subreportParameterExpression> 
       </subreportParameter> 
       <subreportExpression><![CDATA["C:\\reports\\" + "teste.jasper"]]></subreportExpression> 
      </subreport> 
     </band> 
    </detail> 
</jasperReport>

Teste.jrxml (Subreport):

<?xml version="1.0" encoding="UTF-8"?> 
<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="hello" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="15289120-bdf0-4edd-905c-647999c3c0cc"> 
    <style name="table"> 
     <box> 
      <pen lineWidth="1.0" lineColor="#000000"/> 
     </box> 
    </style> 
    <style name="table_TH" mode="Opaque" backcolor="#00FFFF"> 
     <box> 
      <topPen lineWidth="0.5" lineColor="#000000"/> 
      <bottomPen lineWidth="0.5" lineColor="#000000"/> 
     </box> 
    </style> 
    <style name="table_CH" mode="Opaque" backcolor="#C6C6C6"> 
     <box> 
      <topPen lineWidth="0.5" lineColor="#000000"/> 
      <bottomPen lineWidth="0.5" lineColor="#000000"/> 
     </box> 
    </style> 
    <style name="table_TD" mode="Opaque" backcolor="#FFFFFF"> 
     <box> 
      <topPen lineWidth="0.5" lineColor="#000000"/> 
      <bottomPen lineWidth="0.5" lineColor="#000000"/> 
     </box> 
    </style> 
    <subDataset name="New Dataset 1" uuid="2c012e5d-0895-4ef1-8b47-20fd8c6b281f"> 
     <queryString> 
      <![CDATA[]]> 
     </queryString> 
     <field name="nom" class="java.lang.String"/> 
     <field name="introComp" class="java.lang.String"/> 
     <field name="lessComp" class="java.lang.String"/> 
     <field name="resumComp" class="java.lang.String"/> 
     <field name="quiz" class="java.lang.String"/> 
     <field name="progres" class="java.lang.String"/> 
    </subDataset> 
    <parameter name="DS1" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/> 
    <queryString> 
     <![CDATA[]]> 
    </queryString> 
    <detail> 
     <band height="151" splitType="Stretch"> 
      <componentElement> 
       <reportElement key="table" style="table" x="1" y="4" width="555" height="140" isPrintWhenDetailOverflows="true" uuid="1e15cf18-8adf-4bad-9339-04deb8240c82"/> 
       <jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd"> 
        <datasetRun subDataset="New Dataset 1" uuid="5ccdd061-c1c3-46a0-bc92-af14bda9b14a"> 
         <datasetParameter name="REPORT_DATA_SOURCE"> 
          <datasetParameterExpression><![CDATA[$P{DS1}]]></datasetParameterExpression> 
         </datasetParameter> 
        </datasetRun> 
        <jr:column width="99" uuid="faddf5bb-759d-4efc-9a3e-9cf16b8cbda2"> 
         <jr:columnHeader style="table_CH" height="35" rowSpan="1"> 
          <staticText> 
           <reportElement x="0" y="4" width="56" height="20" uuid="795dac43-0ff0-482c-89a0-7dac3b27d513"/> 
           <textElement> 
            <font size="15" isBold="true"/> 
           </textElement> 
           <text><![CDATA[Cours]]></text> 
          </staticText> 
         </jr:columnHeader> 
         <jr:detailCell style="table_TD" height="30" rowSpan="1"> 
          <textField> 
           <reportElement x="3" y="4" width="56" height="20" uuid="195d51a0-9e45-4201-ad67-d3026ce2e72c"/> 
           <textFieldExpression><![CDATA[$F{nom}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
        <jr:column width="103" uuid="8a8bc20b-f8b4-45a6-9cbd-68b4a7391426"> 
         <jr:columnHeader style="table_CH" height="35" rowSpan="1"> 
          <staticText> 
           <reportElement x="0" y="5" width="90" height="20" uuid="795dac43-0ff0-482c-89a0-7dac3b27d513"/> 
           <textElement> 
            <font size="15" isBold="true"/> 
           </textElement> 
           <text><![CDATA[Introduction]]></text> 
          </staticText> 
         </jr:columnHeader> 
         <jr:detailCell style="table_TD" height="30" rowSpan="1"> 
          <textField> 
           <reportElement x="3" y="4" width="74" height="20" uuid="195d51a0-9e45-4201-ad67-d3026ce2e72c"/> 
           <textFieldExpression><![CDATA[$F{introComp}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
        <jr:column width="87" uuid="fde36038-294c-4987-bd03-734736ddb792"> 
         <jr:columnHeader style="table_CH" height="35" rowSpan="1"> 
          <staticText> 
           <reportElement x="0" y="5" width="67" height="20" uuid="795dac43-0ff0-482c-89a0-7dac3b27d513"/> 
           <textElement> 
            <font size="15" isBold="true"/> 
           </textElement> 
           <text><![CDATA[Lesson]]></text> 
          </staticText> 
         </jr:columnHeader> 
         <jr:detailCell style="table_TD" height="30" rowSpan="1"> 
          <textField> 
           <reportElement x="3" y="4" width="74" height="20" uuid="195d51a0-9e45-4201-ad67-d3026ce2e72c"/> 
           <textFieldExpression><![CDATA[$F{lessComp}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
        <jr:column width="90" uuid="51b5dbd4-1bf2-450f-ba8c-f75ea831860b"> 
         <jr:columnHeader style="table_CH" height="35" rowSpan="1"> 
          <staticText> 
           <reportElement x="0" y="5" width="67" height="20" uuid="795dac43-0ff0-482c-89a0-7dac3b27d513"/> 
           <textElement> 
            <font size="15" isBold="true"/> 
           </textElement> 
           <text><![CDATA[Resume]]></text> 
          </staticText> 
         </jr:columnHeader> 
         <jr:detailCell style="table_TD" height="30" rowSpan="1"> 
          <textField> 
           <reportElement x="3" y="4" width="74" height="20" uuid="195d51a0-9e45-4201-ad67-d3026ce2e72c"/> 
           <textFieldExpression><![CDATA[$F{resumComp}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
        <jr:column width="87" uuid="657d2155-3e2f-4f41-ba0a-a17a76598491"> 
         <jr:columnHeader style="table_CH" height="35" rowSpan="1"> 
          <staticText> 
           <reportElement x="0" y="5" width="67" height="20" uuid="795dac43-0ff0-482c-89a0-7dac3b27d513"/> 
           <textElement> 
            <font size="15" isBold="true"/> 
           </textElement> 
           <text><![CDATA[Quiz]]></text> 
          </staticText> 
         </jr:columnHeader> 
         <jr:detailCell style="table_TD" height="30" rowSpan="1"> 
          <textField> 
           <reportElement x="3" y="4" width="56" height="20" uuid="195d51a0-9e45-4201-ad67-d3026ce2e72c"/> 
           <textFieldExpression><![CDATA[$F{quiz}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
        <jr:column width="87" uuid="d36e39c4-8408-4f2f-865f-787aa3166a7e"> 
         <jr:columnHeader style="table_CH" height="35" rowSpan="1"> 
          <staticText> 
           <reportElement x="0" y="5" width="67" height="20" uuid="795dac43-0ff0-482c-89a0-7dac3b27d513"/> 
           <textElement> 
            <font size="15" isBold="true"/> 
           </textElement> 
           <text><![CDATA[Progres]]></text> 
          </staticText> 
         </jr:columnHeader> 
         <jr:detailCell style="table_TD" height="30" rowSpan="1"> 
          <textField> 
           <reportElement x="3" y="4" width="56" height="20" uuid="195d51a0-9e45-4201-ad67-d3026ce2e72c"/> 
           <textFieldExpression><![CDATA[$F{progres}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
       </jr:table> 
      </componentElement> 
     </band> 
    </detail> 
</jasperReport>

Java:

public static void main(String[] args) { 
     List<CoursRapport> coursRapports = new ArrayList<CoursRapport>(); 
     coursRapports.add(new CoursRapport("cours 1", "Complet", "Complet", "Complet", "Complet", "100 %")); 
     coursRapports.add(new CoursRapport("cours 2", "Complet", "Complet", "Complet", "Complet", "100 %")); 
     coursRapports.add(new CoursRapport("cours 3", "Complet", "Complet", "Complet", "Complet", "100 %")); 

     SectionRapport sectRapport = new SectionRapport(); 

     sectRapport.setNom("Sect 1"); 
     sectRapport.setProgres("100%"); 
     sectRapport.setScore("80%"); 
     sectRapport.setLstCours(coursRapports); 

     List<SectionRapport> lstSectionRapports = new ArrayList<SectionRapport>(); 
     lstSectionRapports.add(sectRapport); 

     try{    
      JasperReport jasperReport = JasperCompileManager.compileReport("C:\\reports\\MasterTeste.jrxml"); 
      JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, new HashMap<String, Object>(), new JRBeanCollectionDataSource(lstSectionRapports));  // new JREmptyDataSource() 
      JasperExportManager.exportReportToPdfFile(jasperPrint, "C:\\ressources\\teste.pdf"); 
      System.out.println("HelloJasper.pdf has been generated!"); 
     } catch (JRException e){ 
      e.printStackTrace(); 
     } 
}

Wenn ich gebraucht Beispielbericht war es w Orking gut, aber jetzt der subreport Teil kommt leer mit der Warnung ich oben erwähnt, also vielleicht habe ich nicht implementiert subreport richtig?.

Quelle

2016-03-22 simoi chigo

Antwort

0

Setzen Sie whenNoDataType = "AllSectionsNoDetail" im Unterbericht (auf dem jasperReport-Element) und verschieben Sie das Tabellenelement in den Titel oder das Zusammenfassungsband.

Alternativ können Sie einen neuen JREmptyDataSource() als Datenquellenausdruck für den Unterbericht aus dem Hauptbericht übergeben.

Quelle

2016-03-22 19:46:41 dada67

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