JasperReports来自JavaBeans的列表中的JRBeanCollectionDataSource

Question

我是JasperReports的新手。我做了一些简单的报告，但没有这么复杂。我已经搜索了论坛超过一天，我无法让这个工作。

我得到的错误：

从bean检索字段值时出错：eventPlanTimeSlotBeanDataSet

如果有人能帮我解决问题，我将非常感激。

提前致谢， 汤姆

我的豆子：

public class EventPlanTimeSlotBean {

private String timeSlot;

private List<OrganizerResultReportBean> orgResultBeans = new ArrayList<OrganizerResultReportBean>();

public EventPlanTimeSlotBean(String timeSlot, List<OrganizerResultReportBean> orgResultBeans) {
    this.timeSlot = timeSlot;
    this.orgResultBeans = orgResultBeans;
}

public String getTimeSlot() {
    return timeSlot;
}

public void setTimeSlot(String timeSlot) {
    this.timeSlot = timeSlot;
}

public List<OrganizerResultReportBean> getOrgResultBeans() {
    return orgResultBeans;
}

public void setOrgResultBeans(List<OrganizerResultReportBean> orgResultBeans) {
    this.orgResultBeans = orgResultBeans;
}

我的jrxml文件：

<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="120"/>
<subDataset name="dataset1">
     <field name="timeSlot" class="java.lang.String">
        <fieldDescription><![CDATA[_THIS]]></fieldDescription>
    </field>
</subDataset>
<parameter name="eventPlanNameParam" class="java.lang.String"/>
<parameter name="destinationNameColumnLabel" class="java.lang.String"/>
<parameter name="destinationCityColumnLabel" class="java.lang.String"/>
<parameter name="totalFlightCostsColumnLabel" class="java.lang.String"/>
<parameter name="timeSlotColumnLabel" class="java.lang.String"/>

<field name="eventPlanTimeSlotBeanDataSet" class="java.util.List"/>

<title>
    <band height="110" splitType="Stretch">
        <staticText>
            <reportElement mode="Transparent" x="0" y="20" width="50" height="20" uuid="2af07c91-7b37-4c3a-8eea-53bfc065426e"/>
            <text><![CDATA[Name:]]></text>
        </staticText>
        <textField isBlankWhenNull="true">
            <reportElement mode="Transparent" x="60" y="20" width="300" height="20" uuid="2710e1b0-2493-409e-903b-381ddbb08392"/>
            <textFieldExpression><![CDATA[$P{eventPlanNameParam}]]></textFieldExpression>
        </textField>
    </band>
</title>
<columnHeader>
    <band height="30" splitType="Stretch">
        <textField>
            <reportElement mode="Transparent" x="0" y="5" width="100" height="20" uuid="d7a2f1cf-5325-4841-b46b-01c3c131d3ea"/>
            <textFieldExpression><![CDATA[$P{timeSlotColumnLabel}]]></textFieldExpression>
        </textField>
        <textField>
            <reportElement mode="Transparent" x="100" y="5" width="100" height="20" uuid="d7a2f1cf-5325-4841-b46b-01c3c131d3ea"/>
            <textFieldExpression><![CDATA[$P{destinationNameColumnLabel}]]></textFieldExpression>
        </textField>
        <textField>
            <reportElement mode="Transparent" x="200" y="5" width="100" height="20" uuid="cccc198b-10db-434d-b5c1-ddfcf0b3a0ab"/>
            <textFieldExpression><![CDATA[$P{destinationCityColumnLabel}]]></textFieldExpression>
        </textField>
        <textField>
            <reportElement mode="Transparent" x="300" y="5" width="100" height="20" uuid="cccc198b-10db-434d-b5c1-ddfcf0b3a0ab"/>
            <textFieldExpression><![CDATA[$P{totalFlightCostsColumnLabel}]]></textFieldExpression>
        </textField>
        <line>
            <reportElement mode="Opaque" x="0" y="24" width="511" height="1" uuid="ca213328-f473-4c93-a888-c1fd2181f0e4"/>
        </line>
    </band>
</columnHeader>
<detail>
    <band height="25" splitType="Stretch">
        <componentElement>
            <reportElement x="100" y="0" width="400" height="20" uuid="320e66be-b719-4e1d-b1c8-9215179d7200"/>
            <jr:list xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd" printOrder="Vertical">
                <datasetRun subDataset="dataset1" uuid="056d45ca-4628-4bc5-bb1f-f44bb6d74c82">
                    <dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{eventPlanTimeSlotBeanDataSet})]]></dataSourceExpression>
                </datasetRun>
                <jr:listContents height="20" width="400">
                    <textField>
                        <reportElement x="0" y="0" width="100" height="20" uuid="db39f665-58b9-43ba-89dc-0d93e2f02a77"/>
                        <box leftPadding="10">
                            <topPen lineWidth="1.0"/>
                            <leftPen lineWidth="1.0"/>
                            <bottomPen lineWidth="1.0"/>
                            <rightPen lineWidth="1.0"/>
                        </box>
                        <textFieldExpression><![CDATA[$F{timeSlot}]]></textFieldExpression>
                    </textField>
                </jr:listContents>
            </jr:list>
        </componentElement>
    </band>
</detail>

填写报告：

try {
        jasperPrint = JasperFillManager.fillReport(jreport, meetingResultMap,
                new JRBeanCollectionDataSource(getDataSource(session, searchTask, eventPlan)));
    } catch (JRException e) {
        throw new LocalizedException("meeting_report_pdf_could_not_be_created" + ": " + e.getMessage());
    }