为什么只打印了我的 DataSource 的第一个对象？
Why is only the first object of my DataSource printed?
我正在尝试打印报告。我向报告 1 发送了一个包含 3 个对象的数据源。
Band Detail 包含一个子报表（报表 2）。
我的问题：为什么只打印一次？
发送的每个对象都包含另一个具有 3 个对象的数据源。
报告 2 将此数据源发送到报告 3 并打印行。 （如我所料）。
为什么从报告 2 到报告 3 都有效？为什么从报告 1 到报告 2 不起作用？
它是一个 JavaFX 应用程序。
我的测试：
try {
File report1File = Actions.getReportFromPackage("layout/spProgramm.jrxml");
File report2File = Actions.getReportFromPackage("layout/spWeek.jrxml");
JasperReport report1 = JasperCompileManager.compileReport(report1File.getAbsolutePath());
JasperReport report2 = JasperCompileManager.compileReport(report2File.getAbsolutePath());
ArrayList<JRWeek> report2ArrayList = new ArrayList<>();
report2ArrayList.add(JRWeek.newObject("1"));
report2ArrayList.add(JRWeek.newObject("2"));
report2ArrayList.add(JRWeek.newObject("3"));
JRBeanCollectionDataSource report2DataSource = new JRBeanCollectionDataSource(report2ArrayList);
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put("report2", report2);
parameters.put("report2DataSource", report2DataSource);
JasperPrint jasperPrint = JasperFillManager.fillReport(report1, parameters, new JREmptyDataSource());
JasperViewer jv = new JasperViewer(jasperPrint, false);
} catch (JRException e) {
System.out.println(e.getMessage());
}
Class: JRWeek
public class JRWeek {
private JasperReport report3;
private JRBeanCollectionDataSource report3DataSource;
public static JRWeek newObject(String week) throws JRException {
JRWeek jrWeek = new JRWeek();
File report3File = Actions.getReportFromPackage("layout/spRows.jrxml");
JasperReport report3 = JasperCompileManager.compileReport(report3File.getAbsolutePath());
ArrayList<JRRow> jrRows = new ArrayList<>();
jrRows.add(new JRRow("REPORT 3 WEEK" + week, "ROW 1"));
jrRows.add(new JRRow("REPORT 3 WEEK" + week, "ROW 2"));
jrRows.add(new JRRow("REPORT 3 WEEK" + week, "ROW 3"));
jrWeek.setReport3(report3);
jrWeek.setReport3DataSource(new JRBeanCollectionDataSource(jrRows));
return jrWeek;
}
// Getter and Setter
}
Class: JRRow
public class JRRow {
private String text1;
private String text2;
public JRRow(String text1, String text2) {
super();
this.text1 = text1;
this.text2 = text2;
}
// Getter and Setter
}
报告 1：spProgramm.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="spMeetingProgramm" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="0053568c-4b27-4125-bdd4-3172dc64051b">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<parameter name="report2" class="net.sf.jasperreports.engine.JasperReport"/>
<parameter name="report2DataSource" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<pageHeader>
<band height="60">
<rectangle>
<reportElement x="0" y="0" width="555" height="60" forecolor="#FFFFFF" backcolor="#0B6798" uuid="976d792c-c89b-4ea1-bda7-af6b30392492"/>
<graphicElement>
<pen lineWidth="0.0" lineColor="#0B6798"/>
</graphicElement>
</rectangle>
<textField>
<reportElement x="0" y="0" width="555" height="30" forecolor="#FFFFFF" uuid="43b185ef-16a8-40b2-a933-ecc0fe3adc70"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font size="14" isBold="true"/>
</textElement>
<textFieldExpression><![CDATA["REPORT 1 HEADER 1"]]></textFieldExpression>
</textField>
<textField>
<reportElement x="0" y="30" width="555" height="30" forecolor="#FFFFFF" uuid="9172e851-2e29-4f95-9542-519930e7aa3d"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font size="16" isBold="true"/>
</textElement>
<textFieldExpression><![CDATA["REPORT 1 HEADER 2"]]></textFieldExpression>
</textField>
</band>
</pageHeader>
<detail>
<band height="35">
<subreport>
<reportElement stretchType="RelativeToBandHeight" x="0" y="10" width="555" height="25" uuid="aae0c36a-3373-45cb-a030-ed835e3d0005"/>
<dataSourceExpression><![CDATA[$P{report2DataSource}]]></dataSourceExpression>
<subreportExpression><![CDATA[$P{report2}]]></subreportExpression>
</subreport>
</band>
</detail>
</jasperReport>
报告 2：spWeek.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="spMeetingWeek" pageWidth="555" pageHeight="842" columnWidth="555" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="e6d013b3-aa4c-4ba7-ab71-aaec14a42962">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<field name="report3" class="net.sf.jasperreports.engine.JasperReport"/>
<field name="report3DataSource" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<group name="weekHeader">
<groupHeader>
<band height="17">
<rectangle>
<reportElement x="0" y="0" width="555" height="17" backcolor="#17365D" uuid="70d3c82d-21e2-4dd1-80a9-8ca137ebe569"/>
<graphicElement>
<pen lineWidth="0.5"/>
</graphicElement>
</rectangle>
<textField>
<reportElement x="5" y="0" width="550" height="17" forecolor="#FFFFFF" uuid="45cdacc1-7833-4296-b942-1ce3ab998189"/>
<textElement verticalAlignment="Top">
<font fontName="SansSerif" size="12" isBold="true"/>
</textElement>
<textFieldExpression><![CDATA["REPORT 2 HEADER 1"]]></textFieldExpression>
</textField>
</band>
</groupHeader>
</group>
<group name="header1">
<groupHeader>
<band height="17">
<rectangle>
<reportElement x="0" y="0" width="555" height="17" backcolor="#DEA900" uuid="a5f3a182-963d-456a-9102-de1bbf18895d"/>
<graphicElement>
<pen lineWidth="0.5"/>
</graphicElement>
</rectangle>
<textField>
<reportElement x="5" y="0" width="550" height="17" forecolor="#FFFFFF" uuid="4f94c435-2a99-4c90-8fea-2d30e7c04272"/>
<textElement verticalAlignment="Top">
<font fontName="SansSerif" size="12" isBold="true"/>
</textElement>
<textFieldExpression><![CDATA["REPORT 2 HEADER 2"]]></textFieldExpression>
</textField>
</band>
</groupHeader>
</group>
<group name="header1Rows">
<groupHeader>
<band height="5">
<subreport>
<reportElement stretchType="RelativeToBandHeight" x="0" y="0" width="555" height="5" uuid="0daf0871-3f2e-4287-b42a-f99b554bcd62"/>
<dataSourceExpression><![CDATA[$F{report3DataSource}]]></dataSourceExpression>
<subreportExpression><![CDATA[$F{report3}]]></subreportExpression>
</subreport>
</band>
</groupHeader>
</group>
</jasperReport>
报告 3：spRows.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="spMeetingMinistryPartRow" pageWidth="555" pageHeight="842" columnWidth="555" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="e6d013b3-aa4c-4ba7-ab71-aaec14a42962">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<field name="text1" class="java.lang.String"/>
<field name="text2" class="java.lang.String"/>
<detail>
<band height="17">
<rectangle>
<reportElement stretchType="RelativeToBandHeight" x="0" y="0" width="555" height="17" uuid="09a1f023-2151-43df-831a-6f3a2d19494d"/>
<graphicElement>
<pen lineWidth="0.5"/>
</graphicElement>
</rectangle>
<textField isStretchWithOverflow="true">
<reportElement stretchType="RelativeToBandHeight" x="60" y="0" width="217" height="17" uuid="0afdce9b-710f-41e3-b271-ca4e828c2be4"/>
<textElement verticalAlignment="Middle">
<font fontName="SansSerif" size="11"/>
</textElement>
<textFieldExpression><![CDATA[$F{text1}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" pattern="">
<reportElement stretchType="RelativeToBandHeight" x="282" y="0" width="134" height="17" uuid="5e325968-5b1f-44f1-a326-89cc52620b6c"/>
<textElement verticalAlignment="Middle">
<font size="11"/>
</textElement>
<textFieldExpression><![CDATA[$F{text2}]]></textFieldExpression>
</textField>
</band>
</detail>
</jasperReport>
结果
将报表 3/spRows.jrxml 子报表元素放在报表 2/spWeek.jrxml 报表的详细信息带中。
你现在有了一个没有组表达式的组的 header，这样的 header 只在报告中打印一次。
我正在尝试打印报告。我向报告 1 发送了一个包含 3 个对象的数据源。 Band Detail 包含一个子报表（报表 2）。 我的问题：为什么只打印一次？
发送的每个对象都包含另一个具有 3 个对象的数据源。 报告 2 将此数据源发送到报告 3 并打印行。 （如我所料）。
为什么从报告 2 到报告 3 都有效？为什么从报告 1 到报告 2 不起作用？
它是一个 JavaFX 应用程序。
我的测试：
try {
File report1File = Actions.getReportFromPackage("layout/spProgramm.jrxml");
File report2File = Actions.getReportFromPackage("layout/spWeek.jrxml");
JasperReport report1 = JasperCompileManager.compileReport(report1File.getAbsolutePath());
JasperReport report2 = JasperCompileManager.compileReport(report2File.getAbsolutePath());
ArrayList<JRWeek> report2ArrayList = new ArrayList<>();
report2ArrayList.add(JRWeek.newObject("1"));
report2ArrayList.add(JRWeek.newObject("2"));
report2ArrayList.add(JRWeek.newObject("3"));
JRBeanCollectionDataSource report2DataSource = new JRBeanCollectionDataSource(report2ArrayList);
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put("report2", report2);
parameters.put("report2DataSource", report2DataSource);
JasperPrint jasperPrint = JasperFillManager.fillReport(report1, parameters, new JREmptyDataSource());
JasperViewer jv = new JasperViewer(jasperPrint, false);
} catch (JRException e) {
System.out.println(e.getMessage());
}
Class: JRWeek
public class JRWeek {
private JasperReport report3;
private JRBeanCollectionDataSource report3DataSource;
public static JRWeek newObject(String week) throws JRException {
JRWeek jrWeek = new JRWeek();
File report3File = Actions.getReportFromPackage("layout/spRows.jrxml");
JasperReport report3 = JasperCompileManager.compileReport(report3File.getAbsolutePath());
ArrayList<JRRow> jrRows = new ArrayList<>();
jrRows.add(new JRRow("REPORT 3 WEEK" + week, "ROW 1"));
jrRows.add(new JRRow("REPORT 3 WEEK" + week, "ROW 2"));
jrRows.add(new JRRow("REPORT 3 WEEK" + week, "ROW 3"));
jrWeek.setReport3(report3);
jrWeek.setReport3DataSource(new JRBeanCollectionDataSource(jrRows));
return jrWeek;
}
// Getter and Setter
}
Class: JRRow
public class JRRow {
private String text1;
private String text2;
public JRRow(String text1, String text2) {
super();
this.text1 = text1;
this.text2 = text2;
}
// Getter and Setter
}
报告 1：spProgramm.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="spMeetingProgramm" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="0053568c-4b27-4125-bdd4-3172dc64051b">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<parameter name="report2" class="net.sf.jasperreports.engine.JasperReport"/>
<parameter name="report2DataSource" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<pageHeader>
<band height="60">
<rectangle>
<reportElement x="0" y="0" width="555" height="60" forecolor="#FFFFFF" backcolor="#0B6798" uuid="976d792c-c89b-4ea1-bda7-af6b30392492"/>
<graphicElement>
<pen lineWidth="0.0" lineColor="#0B6798"/>
</graphicElement>
</rectangle>
<textField>
<reportElement x="0" y="0" width="555" height="30" forecolor="#FFFFFF" uuid="43b185ef-16a8-40b2-a933-ecc0fe3adc70"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font size="14" isBold="true"/>
</textElement>
<textFieldExpression><![CDATA["REPORT 1 HEADER 1"]]></textFieldExpression>
</textField>
<textField>
<reportElement x="0" y="30" width="555" height="30" forecolor="#FFFFFF" uuid="9172e851-2e29-4f95-9542-519930e7aa3d"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font size="16" isBold="true"/>
</textElement>
<textFieldExpression><![CDATA["REPORT 1 HEADER 2"]]></textFieldExpression>
</textField>
</band>
</pageHeader>
<detail>
<band height="35">
<subreport>
<reportElement stretchType="RelativeToBandHeight" x="0" y="10" width="555" height="25" uuid="aae0c36a-3373-45cb-a030-ed835e3d0005"/>
<dataSourceExpression><![CDATA[$P{report2DataSource}]]></dataSourceExpression>
<subreportExpression><![CDATA[$P{report2}]]></subreportExpression>
</subreport>
</band>
</detail>
</jasperReport>
报告 2：spWeek.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="spMeetingWeek" pageWidth="555" pageHeight="842" columnWidth="555" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="e6d013b3-aa4c-4ba7-ab71-aaec14a42962">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<field name="report3" class="net.sf.jasperreports.engine.JasperReport"/>
<field name="report3DataSource" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<group name="weekHeader">
<groupHeader>
<band height="17">
<rectangle>
<reportElement x="0" y="0" width="555" height="17" backcolor="#17365D" uuid="70d3c82d-21e2-4dd1-80a9-8ca137ebe569"/>
<graphicElement>
<pen lineWidth="0.5"/>
</graphicElement>
</rectangle>
<textField>
<reportElement x="5" y="0" width="550" height="17" forecolor="#FFFFFF" uuid="45cdacc1-7833-4296-b942-1ce3ab998189"/>
<textElement verticalAlignment="Top">
<font fontName="SansSerif" size="12" isBold="true"/>
</textElement>
<textFieldExpression><![CDATA["REPORT 2 HEADER 1"]]></textFieldExpression>
</textField>
</band>
</groupHeader>
</group>
<group name="header1">
<groupHeader>
<band height="17">
<rectangle>
<reportElement x="0" y="0" width="555" height="17" backcolor="#DEA900" uuid="a5f3a182-963d-456a-9102-de1bbf18895d"/>
<graphicElement>
<pen lineWidth="0.5"/>
</graphicElement>
</rectangle>
<textField>
<reportElement x="5" y="0" width="550" height="17" forecolor="#FFFFFF" uuid="4f94c435-2a99-4c90-8fea-2d30e7c04272"/>
<textElement verticalAlignment="Top">
<font fontName="SansSerif" size="12" isBold="true"/>
</textElement>
<textFieldExpression><![CDATA["REPORT 2 HEADER 2"]]></textFieldExpression>
</textField>
</band>
</groupHeader>
</group>
<group name="header1Rows">
<groupHeader>
<band height="5">
<subreport>
<reportElement stretchType="RelativeToBandHeight" x="0" y="0" width="555" height="5" uuid="0daf0871-3f2e-4287-b42a-f99b554bcd62"/>
<dataSourceExpression><![CDATA[$F{report3DataSource}]]></dataSourceExpression>
<subreportExpression><![CDATA[$F{report3}]]></subreportExpression>
</subreport>
</band>
</groupHeader>
</group>
</jasperReport>
报告 3：spRows.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="spMeetingMinistryPartRow" pageWidth="555" pageHeight="842" columnWidth="555" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="e6d013b3-aa4c-4ba7-ab71-aaec14a42962">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<field name="text1" class="java.lang.String"/>
<field name="text2" class="java.lang.String"/>
<detail>
<band height="17">
<rectangle>
<reportElement stretchType="RelativeToBandHeight" x="0" y="0" width="555" height="17" uuid="09a1f023-2151-43df-831a-6f3a2d19494d"/>
<graphicElement>
<pen lineWidth="0.5"/>
</graphicElement>
</rectangle>
<textField isStretchWithOverflow="true">
<reportElement stretchType="RelativeToBandHeight" x="60" y="0" width="217" height="17" uuid="0afdce9b-710f-41e3-b271-ca4e828c2be4"/>
<textElement verticalAlignment="Middle">
<font fontName="SansSerif" size="11"/>
</textElement>
<textFieldExpression><![CDATA[$F{text1}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" pattern="">
<reportElement stretchType="RelativeToBandHeight" x="282" y="0" width="134" height="17" uuid="5e325968-5b1f-44f1-a326-89cc52620b6c"/>
<textElement verticalAlignment="Middle">
<font size="11"/>
</textElement>
<textFieldExpression><![CDATA[$F{text2}]]></textFieldExpression>
</textField>
</band>
</detail>
</jasperReport>
结果
将报表 3/spRows.jrxml 子报表元素放在报表 2/spWeek.jrxml 报表的详细信息带中。
你现在有了一个没有组表达式的组的 header，这样的 header 只在报告中打印一次。