Java JasperReports-带表的子报表-参数传递

我正在使用JRBeanCollectionDataSource对象来获取数据，并试图找出如何排列Java对象（以及，我猜，JRXML中的相关设置）

具体地说，我已经定义了一个独立运行的子报表，它使用一个表。为了填充表中的行，我传入一个数据源，它是一个数据bean数组，作为参数传递给报表

但是，当将该报表作为子报表嵌入到主报表中时，我不清楚应该如何传入相应的数据对象。不过，我似乎找不到任何这样的例子。如果你知道任何例子，那就太好了

否则，到目前为止我得到的是：

每个子报表都有几个参数和3个表

数据Bean（每个基本上都是表的一行）：

主Bean（具有所有3个表的数据集以及每个子报表所需的3个参数）：

import java.util.ArrayList；
公共类MasterBean{
私有ArrayList t1；//表1
私有ArrayList t2a；//表2第1列
private ArrayList t2b；//表2第2列
私人字符串免责声明；
私有字符串事件详细信息；
私有字符串事件类型；
公共阵列列表getT1（）{
返回t1；
}
公共无效集合T1（ArrayList beanlist）{
this.t1=beanlist；
}
公共数组列表getT2a（）{
返回t2a；
}
公共无效集合2A（ArrayList beanlist）{
this.t2a=beanlist；
}
公共数组列表getT2b（）{
返回t2b；
}
公共无效集合2b（ArrayList beanlist）{
this.t2b=beanlist；
}
公共字符串getDisclaimer（）{
退货免责声明；
}
公共无效设置免责声明（字符串s）{
此。免责声明=s；
}
公共字符串getEvent_detail（）{
返回事件详细信息；
}
公共无效设置事件详细信息（字符串s）{
this.event_detail=s；
}
公共字符串getEvent_type（）{
返回事件类型；
}
公共void setEvent_类型（字符串s）{
this.event_type=s；
}
}

为了填写报告（有趣的部分），我有点胡编乱造，因为我没有找到任何文档：

            ... (snip) ...
            DataBeanList DataBeanList = new DataBeanList();

            ArrayList<DataBean> t1_1 = DataBeanList.getDataBeanList(0);
            ArrayList<DataBean> t2a_1 = DataBeanList.getDataBeanList(1);
            ArrayList<DataBean> t2b_1 = DataBeanList.getDataBeanList(2);
            MasterBean sub1 = new MasterBean();
            sub1.setT1(t1_1);
            sub1.setT2a(t2a_1);
            sub1.setT2b(t2b_1);
            sub1.setDisclaimer("Disclaimer 1 goes here");
            sub1.setEvent_detail("Event Detail 1 goes here");
            sub1.setEvent_type("Event Type 1 goes here");

            ArrayList<DataBean> t1_2 = DataBeanList.getDataBeanList(0);
            ArrayList<DataBean> t2a_2 = DataBeanList.getDataBeanList(1);
            ArrayList<DataBean> t2b_2 = DataBeanList.getDataBeanList(2);
            MasterBean sub2 = new MasterBean();
            sub2.setT1(t1_2);
            sub2.setT2a(t2a_2);
            sub2.setT2b(t2b_2);
            sub2.setDisclaimer("Disclaimer 2 goes here");
            sub2.setEvent_detail("Event Detail 2 goes here");
            sub2.setEvent_type("Event Type 2 goes here");

            ArrayList<DataBean> t1_3 = DataBeanList.getDataBeanList(0);
            ArrayList<DataBean> t2a_3 = DataBeanList.getDataBeanList(1);
            ArrayList<DataBean> t2b_3 = DataBeanList.getDataBeanList(2);
            MasterBean sub3 = new MasterBean();
            sub3.setT1(t1_3);
            sub3.setT2a(t2a_3);
            sub3.setT2b(t2b_3);
            sub3.setDisclaimer("Disclaimer 3 goes here");
            sub3.setEvent_detail("Event Detail 3 goes here");
            sub3.setEvent_type("Event Type 3 goes here");

            ArrayList<MasterBean> masterList = new ArrayList<MasterBean>();
            masterList.add(sub1);
            masterList.add(sub2);
            masterList.add(sub3);

            JRBeanCollectionDataSource datasource = new JRBeanCollectionDataSource(masterList);

            Map params = new HashMap();

            params.put("report_type","Master Report Type");

            try {

。。。（剪）。。。
DataBeanList DataBeanList=新的DataBeanList（）；
ArrayList t1_1=DataBeanList.getDataBeanList（0）；
ArrayList t2a_1=DataBeanList.getDataBeanList（1）；
ArrayList t2b_1=DataBeanList.getDataBeanList（2）；
MasterBean sub1=新MasterBean（）；
sub1.setT1（t1_1）；
sub1.setT2a（t2a_1）；
sub1.setT2b（t2b_1）；
子1.设定免责声明（“此处为免责声明1”）；
子1.设置事件详细信息（“事件详细信息1在此显示”）；
sub1.setEvent_type（“此处为事件类型1”）；
ArrayList t1_2=DataBeanList.getDataBeanList（0）；
ArrayList t2a_2=DataBeanList.getDataBeanList（1）；
ArrayList t2b_2=DataBeanList.getDataBeanList（2）；
MasterBean sub2=新MasterBean（）；
sub2.setT1（t1_2）；
sub2.setT2a（t2a_2）；
sub2.setT2b（t2b_2）；
子2.设定免责声明（“此处为免责声明2”）；
sub2.setEvent_detail（“此处为事件细节2”）；
sub2.setEvent_type（“此处为事件类型2”）；
ArrayList t1_3=DataBeanList.getDataBeanList（0）；
ArrayList t2a_3=DataBeanList.getDataBeanList（1）；
ArrayList t2b_3=DataBeanList.getDataBeanList（2）；
MasterBean sub3=新MasterBean（）；
sub3.setT1（t1_3）；
sub3.setT2a（t2a_3）；
sub3.setT2b（t2b_3）；
子3.设定免责声明（“此处为免责声明3”）；
子3.设置事件详细信息（“此处为事件详细信息3”）；
sub3.setEvent_type（“此处为事件类型3”）；
ArrayList主列表=新的ArrayList（）；
主列表。添加（子1）；
主列表。添加（子2）；
主列表。添加（子3）；
JRBeanCollectionDataSource=新的JRBeanCollectionDataSource（主列表）；
Map params=新的HashMap（）；
参数put（“报告类型”、“主报告类型”）；
试一试{

/deaton/jasper/jasperreports-5.5.1/demo/samples/testme/reports/CASummary.jrxml”）； jasperreportjaspersub=jaspecompilemanager.compileReport（“/home/deaton/jasper/jasperreports-5.5.1/demo/samples/testme/reports/CAEventDetails.jrxml”）； 参数put（“子报告参数”，jasperSub）； 参数，tdatasource）； params，新JREptyDataSource（2））； JasperFillManager.fillReportToFile（“build/reports/CASummary.jasper”，参数，数据源）； …（剪断）

对于子报告，以下是JRXML中一些有趣的内容：

    ... (snip) ...
    <subDataset name="instrument_details" uuid="6d672249-f7b2-44ca-9f8a-6cb4995fdfab">
            <field name="c1_name" class="java.lang.String"/>
            <field name="c1_value" class="java.lang.String"/>
            <field name="c2_name" class="java.lang.String"/>
            <field name="c2_value" class="java.lang.String"/>
    </subDataset>
    <subDataset name="event_information" uuid="f2f954af-98c1-4f2b-9c57-e666d309fdce">
            <field name="c1_name" class="java.lang.String"/>
            <field name="c1_value" class="java.lang.String"/>
            <field name="c2_name" class="java.lang.String"/>
            <field name="c2_value" class="java.lang.String"/>
    </subDataset>
    <parameter name="disclaimer" class="java.lang.String"/>
    <parameter name="event_detail" class="java.lang.String"/>
    <parameter name="event_type" class="java.lang.String"/>

    <parameter name="DS1" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
    <parameter name="DS2" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
    <parameter name="DS3" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>

    <field name="event_comments" class="java.lang.String"/>
    <field name="event_description" class="java.lang.String"/>

    ... (skip down) ...

                    <componentElement>
                            <reportElement key="table" style="table" x="0" y="20" width="572" height="20" uuid="a3e03a5d-48cd-4bf4-82f4-df7de7958a75"/>
                            <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="instrument_details" uuid="1e25358d-f600-4ea3-80b3-f15d4438992c">
                                            <datasetParameter name="REPORT_DATA_SOURCE">
                                                    <datasetParameterExpression><![CDATA[$P{DS1}]]></datasetParameterExpression>
                                            </datasetParameter>
                                    </datasetRun>
                                    <jr:column width="100" uuid="f4c26fd2-95ae-49a4-8b6f-8fbe6f47f810">
                                            <jr:detailCell style="table_TD" height="20" rowSpan="1">
                                                    <textField>
                                                            <reportElement x="0" y="0" width="100" height="20" uuid="578b42c1-3065-419a-8758-4e1b4946ca04"/>
                                                            <textFieldExpression><![CDATA[$F{c1_name}]]></textFieldExpression>
                                                    </textField>
                                            </jr:detailCell>
                                    </jr:column>
                                    <jr:column width="186" uuid="ceb83fa5-ed21-4cca-b374-aae224688297">
                                            <jr:detailCell style="table_TD" height="20" rowSpan="1">
                                                    <textField>
                                                            <reportElement x="0" y="0" width="186" height="20" uuid="d5cdb3c8-af89-4af7-bd94-ee6fda45f327"/>
                                                            <textFieldExpression><![CDATA[$F{c1_value}]]></textFieldExpression>
                                                    </textField>
                                            </jr:detailCell>
                                    </jr:column>
                                    <jr:column width="100" uuid="ca9810a7-6684-49e2-b673-ed84278a5d20">
                                            <jr:detailCell style="table_TD" height="20" rowSpan="1">
                                                    <textField>
                                                            <reportElement x="0" y="0" width="100" height="20" uuid="e6765684-2042-47e7-858d-b2b0d9ae8eaf"/>
                                                            <textFieldExpression><![CDATA[$F{c2_name}]]></textFieldExpression>
                                                    </textField>
                                            </jr:detailCell>
                                    </jr:column>
                                    <jr:column width="186" uuid="c99af79c-5373-41c4-a05a-4538da4504df">
                                            <jr:detailCell style="table_TD" height="20" rowSpan="1">
                                                    <textField>
                                                            <reportElement x="0" y="0" width="186" height="20" uuid="e4079374-640c-4a79-b315-a1f33079bfd3"/>
                                                            <textFieldExpression><![CDATA[$F{c2_value}]]></textFieldExpression>
                                                    </textField>
                                            </jr:detailCell>
                                    </jr:column>
                            </jr:table>
                    </componentElement>
    ... (above repeated for other tables) ...

…（剪断）。。。
…（跳下去）。。。
            ... (snip) ...
            DataBeanList DataBeanList = new DataBeanList();

            ArrayList<DataBean> t1_1 = DataBeanList.getDataBeanList(0);
            ArrayList<DataBean> t2a_1 = DataBeanList.getDataBeanList(1);
            ArrayList<DataBean> t2b_1 = DataBeanList.getDataBeanList(2);
            MasterBean sub1 = new MasterBean();
            sub1.setT1(t1_1);
            sub1.setT2a(t2a_1);
            sub1.setT2b(t2b_1);
            sub1.setDisclaimer("Disclaimer 1 goes here");
            sub1.setEvent_detail("Event Detail 1 goes here");
            sub1.setEvent_type("Event Type 1 goes here");

            ArrayList<DataBean> t1_2 = DataBeanList.getDataBeanList(0);
            ArrayList<DataBean> t2a_2 = DataBeanList.getDataBeanList(1);
            ArrayList<DataBean> t2b_2 = DataBeanList.getDataBeanList(2);
            MasterBean sub2 = new MasterBean();
            sub2.setT1(t1_2);
            sub2.setT2a(t2a_2);
            sub2.setT2b(t2b_2);
            sub2.setDisclaimer("Disclaimer 2 goes here");
            sub2.setEvent_detail("Event Detail 2 goes here");
            sub2.setEvent_type("Event Type 2 goes here");

            ArrayList<DataBean> t1_3 = DataBeanList.getDataBeanList(0);
            ArrayList<DataBean> t2a_3 = DataBeanList.getDataBeanList(1);
            ArrayList<DataBean> t2b_3 = DataBeanList.getDataBeanList(2);
            MasterBean sub3 = new MasterBean();
            sub3.setT1(t1_3);
            sub3.setT2a(t2a_3);
            sub3.setT2b(t2b_3);
            sub3.setDisclaimer("Disclaimer 3 goes here");
            sub3.setEvent_detail("Event Detail 3 goes here");
            sub3.setEvent_type("Event Type 3 goes here");

            ArrayList<MasterBean> masterList = new ArrayList<MasterBean>();
            masterList.add(sub1);
            masterList.add(sub2);
            masterList.add(sub3);

            JRBeanCollectionDataSource datasource = new JRBeanCollectionDataSource(masterList);

            Map params = new HashMap();

            params.put("report_type","Master Report Type");

            try {

    ... (snip) ...
    <subDataset name="instrument_details" uuid="6d672249-f7b2-44ca-9f8a-6cb4995fdfab">
            <field name="c1_name" class="java.lang.String"/>
            <field name="c1_value" class="java.lang.String"/>
            <field name="c2_name" class="java.lang.String"/>
            <field name="c2_value" class="java.lang.String"/>
    </subDataset>
    <subDataset name="event_information" uuid="f2f954af-98c1-4f2b-9c57-e666d309fdce">
            <field name="c1_name" class="java.lang.String"/>
            <field name="c1_value" class="java.lang.String"/>
            <field name="c2_name" class="java.lang.String"/>
            <field name="c2_value" class="java.lang.String"/>
    </subDataset>
    <parameter name="disclaimer" class="java.lang.String"/>
    <parameter name="event_detail" class="java.lang.String"/>
    <parameter name="event_type" class="java.lang.String"/>

    <parameter name="DS1" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
    <parameter name="DS2" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
    <parameter name="DS3" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>

    <field name="event_comments" class="java.lang.String"/>
    <field name="event_description" class="java.lang.String"/>

    ... (skip down) ...

                    <componentElement>
                            <reportElement key="table" style="table" x="0" y="20" width="572" height="20" uuid="a3e03a5d-48cd-4bf4-82f4-df7de7958a75"/>
                            <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="instrument_details" uuid="1e25358d-f600-4ea3-80b3-f15d4438992c">
                                            <datasetParameter name="REPORT_DATA_SOURCE">
                                                    <datasetParameterExpression><![CDATA[$P{DS1}]]></datasetParameterExpression>
                                            </datasetParameter>
                                    </datasetRun>
                                    <jr:column width="100" uuid="f4c26fd2-95ae-49a4-8b6f-8fbe6f47f810">
                                            <jr:detailCell style="table_TD" height="20" rowSpan="1">
                                                    <textField>
                                                            <reportElement x="0" y="0" width="100" height="20" uuid="578b42c1-3065-419a-8758-4e1b4946ca04"/>
                                                            <textFieldExpression><![CDATA[$F{c1_name}]]></textFieldExpression>
                                                    </textField>
                                            </jr:detailCell>
                                    </jr:column>
                                    <jr:column width="186" uuid="ceb83fa5-ed21-4cca-b374-aae224688297">
                                            <jr:detailCell style="table_TD" height="20" rowSpan="1">
                                                    <textField>
                                                            <reportElement x="0" y="0" width="186" height="20" uuid="d5cdb3c8-af89-4af7-bd94-ee6fda45f327"/>
                                                            <textFieldExpression><![CDATA[$F{c1_value}]]></textFieldExpression>
                                                    </textField>
                                            </jr:detailCell>
                                    </jr:column>
                                    <jr:column width="100" uuid="ca9810a7-6684-49e2-b673-ed84278a5d20">
                                            <jr:detailCell style="table_TD" height="20" rowSpan="1">
                                                    <textField>
                                                            <reportElement x="0" y="0" width="100" height="20" uuid="e6765684-2042-47e7-858d-b2b0d9ae8eaf"/>
                                                            <textFieldExpression><![CDATA[$F{c2_name}]]></textFieldExpression>
                                                    </textField>
                                            </jr:detailCell>
                                    </jr:column>
                                    <jr:column width="186" uuid="c99af79c-5373-41c4-a05a-4538da4504df">
                                            <jr:detailCell style="table_TD" height="20" rowSpan="1">
                                                    <textField>
                                                            <reportElement x="0" y="0" width="186" height="20" uuid="e4079374-640c-4a79-b315-a1f33079bfd3"/>
                                                            <textFieldExpression><![CDATA[$F{c2_value}]]></textFieldExpression>
                                                    </textField>
                                            </jr:detailCell>
                                    </jr:column>
                            </jr:table>
                    </componentElement>
    ... (above repeated for other tables) ...

    ... (snip) ...
    <parameter name="SUBREPORT_DIR" class="java.lang.String" isForPrompting="false">
            <defaultValueExpression><![CDATA["/home/deaton/jasper/jasperreports-5.5.1/demo/samples/testme/build/reports/"]]></defaultValueExpression>
    </parameter>
    <parameter name="report_type" class="java.lang.String"/>
    <parameter name="master_source" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
    <parameter name="subreportParameter" class="net.sf.jasperreports.engine.JasperReport"/>

    <field name="disclaimer" class="java.lang.String"/>
    <field name="event_detail" class="java.lang.String"/>
    <field name="event_type" class="java.lang.String"/>
    <field name="t1" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
    <field name="t2a" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
    <field name="t2b" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>

    ... (skip a bit) ...

    <detail>
            <band height="125" splitType="Stretch">
                    <subreport>
                            <reportElement x="0" y="0" width="572" height="125" uuid="aba34d2d-04ee-4ff7-803b-14424c825b3f"/>
                            <subreportParameter name="disclaimer">
                                    <subreportParameterExpression>
                                            <![CDATA[$F{disclaimer}]]>
                                    </subreportParameterExpression>
                            </subreportParameter>

                            <subreportParameter name="event_detail">
                                    <subreportParameterExpression>
                                            <![CDATA[$F{event_detail}]]>
                                    </subreportParameterExpression>
                            </subreportParameter>

                            <subreportParameter name="event_type">
                                    <subreportParameterExpression>
                                            <![CDATA[$F{event_type}]]>
                                    </subreportParameterExpression>
                            </subreportParameter>

                            <subreportParameter name="DS1">
                                    <subreportParameterExpression>
                                            <![CDATA[$F{t1}]]>
                                    </subreportParameterExpression>
                            </subreportParameter>

                            <subreportParameter name="DS2">
                                    <subreportParameterExpression>
                                            <![CDATA[$F{t2a}]]>
                                    </subreportParameterExpression>
                            </subreportParameter>

                            <subreportParameter name="DS3">
                                    <subreportParameterExpression>
                                            <![CDATA[$F{t2b}]]>
                                    </subreportParameterExpression>
                            </subreportParameter>

                            <connectionExpression><![CDATA[$P{REPORT_CONNECTION}]]></connectionExpression>
                            <subreportExpression><![CDATA[$P{SUBREPORT_DIR} + "CAEventDetails.jasper"]]></subreportExpression>
                    </subreport>
            </band>
    </detail>
    ... (snip) ...