Jasperreports 中的嵌套子报表
Nested subreports in Jasperreports
我想生成一个包含嵌套子报表的报表，例如：
MainReport --- whose dataSource refers to ---> List<MainSkillCategory>
|
|--- contains ---> SubReport_1 --- whose dataSource refers to ---> List<SubSkillCategory>
|
|--- contains ---> SubReport_2 --- whose dataSource refers to ---> List<Skill>
MainSkillCategory.java class :
public class MainSkillCategory {
String nameMainSkillCat;
List<SubSkillCategory> subSkillCategories;
public MainSkillCategory(String nameMainSkillCat){
this.nameMainSkillCat = nameMainSkillCat;
this.subSkillCategories = new ArrayList<SubSkillCategory>();
}
public String getNameMainSkillCat() {
return nameMainSkillCat;
}
public void setNameMainSkillCat(String nameMainSkillCat) {
this.nameMainSkillCat = nameMainSkillCat;
}
public List<SubSkillCategory> getSubSkillCategories() {
return subSkillCategories;
}
public void setSubSkillCategories(List<SubSkillCategory> subSkillCategories) {
this.subSkillCategories = subSkillCategories;
}
public void addSubSkillCategory(SubSkillCategory subSkillCat){
subSkillCategories.add(subSkillCat);
}
}
SubSkillCategory.java class :
public class SubSkillCategory {
String nameSubSkillCat;
List<Skill> skills;
public SubSkillCategory(String nameSubSkillCat){
this.nameSubSkillCat = nameSubSkillCat;
this.skills = new ArrayList<Skill>();
}
public String getNameSubSkillCat() {
return nameSubSkillCat;
}
public void setNameSubSkillCat(String nameSubSkillCat) {
this.nameSubSkillCat = nameSubSkillCat;
}
public List<Skill> getSkills() {
return skills;
}
public void setSkills(List<Skill> skills) {
this.skills = skills;
}
public void addSkill(Skill skill){
skills.add(skill);
}
}
Skill.java Class :
public class Skill {
String nameSkill;
public Skill(String nameSkill){
this.nameSkill=nameSkill;
}
public String getNameSkill() {
return nameSkill;
}
public void setNameSkill(String nameSkill) {
this.nameSkill = nameSkill;
}
}
我的 MainReport.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="profile_report" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="40a9d14e-f38a-4588-b1d3-216588ae5e9a">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="0"/>
<style name="mainSkillCategory" hAlign="Left" vAlign="Middle" fontSize="12" isBold="true"/>
<parameter name="datasource_mainSkillCategories" isForPrompting="false" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<parameter name="subreport_subCat_parameter" class="net.sf.jasperreports.engine.JasperReport"/>
<parameter name="subreport_skill_parameter" class="net.sf.jasperreports.engine.JasperReport"/>
<field name = "nameMainSkillCat" class = "java.lang.String"/>
<detail>
<band height="108">
<textField isStretchWithOverflow = "true">
<reportElement style="mainSkillCategory" x="0" y="33" width="555" height="25" uuid="1e50be4f-2743-470c-a8ad-1fd91d99f786"/>
<textElement>
<font fontName="Calibri" size="12" isBold="true" pdfFontName="Calibri" isPdfEmbedded="true"/>
<paragraph spacingBefore="-15" tabStopWidth="24"/>
</textElement>
<textFieldExpression class = "java.lang.String">
<![CDATA[$F{nameMainSkillCat}]]>
</textFieldExpression>
</textField>
<subreport>
<reportElement positionType = "Float" x = "0" y = "10" width = "555" height = "10" isRemoveLineWhenBlank = "true" backcolor = "#99ccff"/>
<subreportParameter name="subreport_skill_parameter">
<subreportParameterExpression><![CDATA[$P{subreport_skill_parameter}]]></subreportParameterExpression>
</subreportParameter>
<subreportParameter name="datasource_skills">
<subreportParameterExpression><![CDATA[$P{subreport_skill_parameter}]]></subreportParameterExpression>
</subreportParameter>
<dataSourceExpression><![CDATA[$P{datasource_mainSkillCategories}]]></dataSourceExpression>
<subreportExpression class="net.sf.jasperreports.engine.JasperReport"><![CDATA[$P{subreport_subCat_parameter}]]></subreportExpression>
</subreport>
</band>
</detail>
</jasperReport>
我的 SubSkillCategory.jrxml :
<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="profile_report" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="40a9d14e-f38a-4588-b1d3-216588ae5e9a">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="0"/>
<style name="subSkillCategory" hAlign="Left" vAlign="Middle" fontSize="12" isBold="true"/>
<parameter name="datasource_skills" isForPrompting="false" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<parameter name="subreport_skill_parameter" class="net.sf.jasperreports.engine.JasperReport"/>
<field name = "nameSubSkillCat" class = "java.lang.String"/>
<detail>
<band height="100">
<textField isStretchWithOverflow = "true">
<reportElement style="subSkillCategory" x="0" y="0" width="555" height="9" uuid="e0c7832a-2099-4185-abcd-ad85dc935a86"/>
<textElement>
<font fontName="Calibri" size="12" isBold="true" pdfFontName="Calibri" isPdfEmbedded="true"/>
<paragraph spacingBefore="-15" tabStopWidth="30"/>
</textElement>
<textFieldExpression class = "java.lang.String">
<![CDATA[$F{nameSubSkillCat}]]>
</textFieldExpression>
</textField>
<subreport>
<reportElement positionType = "Float" x = "0" y = "10" width = "555" height = "10" isRemoveLineWhenBlank = "true" backcolor = "#99ccff"/>
<dataSourceExpression><![CDATA[$P{datasource_skills}]]></dataSourceExpression>
<subreportExpression class="net.sf.jasperreports.engine.JasperReport"><![CDATA[$P{subreport_skill_parameter}]]></subreportExpression>
</subreport>
</band>
</detail>
</jasperReport>
我的 Main.java :
public static void main(String[] args) {
try {
JasperReport jasperReportSKill = JasperCompileManager.compileReport("resources/subReport_skill.jrxml");
JasperReport jasperReportSubCat = JasperCompileManager.compileReport("resources/subReport_subCat.jrxml");
JasperReport jasperReportMainCat = JasperCompileManager.compileReport("resources/subReport_mainCat.jrxml");
JRBeanCollectionDataSource dataSource = new JRBeanCollectionDataSource(getMainSkillCategoryList());
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put("subreport_skill_parameter", jasperReportSKill);
parameters.put("subreport_subCat_parameter", jasperReportSubCat);
parameters.put("datasource_mainSkillCategories", dataSource);
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReportMainCat, parameters, new JREmptyDataSource());
//...
}
也就是说，当我尝试生成 MainReport 时，我得到了这个错误：java.lang.NoSuchMethodException: Unknown property 'nameSubSkillCat' on class 'class jasperReports.helloWorld.MainSkillCategory' 我认为这是合乎逻辑的，因为我正在传递给 SubReport_1（即 SubSkillCategory 报告）的数据源MainSkillCategory 报告。
现在我的问题是如何在 MainSkillCategory.jrxml 的子报表块中指定对当前 MainSkillCategory bean 的引用，以便我可以获得 "this.getSubSkillCategories()" 并将其作为我的 dataSourceExpression 传递给 SubReport_1.
抱歉，文字太长了，但我想提供源代码，这样任何人都可以知道问题到底是什么。预先感谢您的帮助。
我找到了问题的解决方案：我应该将现在的 List<SubSkillCategory> 定义为 MainSkillCategory.jrxml 中的一个字段。感谢 Ranjit 回答 @http://community.jaspersoft.com/questions/533552/solved-problem-passing-datasource-subreport.
我想生成一个包含嵌套子报表的报表，例如：
MainReport --- whose dataSource refers to ---> List<MainSkillCategory>
|
|--- contains ---> SubReport_1 --- whose dataSource refers to ---> List<SubSkillCategory>
|
|--- contains ---> SubReport_2 --- whose dataSource refers to ---> List<Skill>
MainSkillCategory.java class :
public class MainSkillCategory {
String nameMainSkillCat;
List<SubSkillCategory> subSkillCategories;
public MainSkillCategory(String nameMainSkillCat){
this.nameMainSkillCat = nameMainSkillCat;
this.subSkillCategories = new ArrayList<SubSkillCategory>();
}
public String getNameMainSkillCat() {
return nameMainSkillCat;
}
public void setNameMainSkillCat(String nameMainSkillCat) {
this.nameMainSkillCat = nameMainSkillCat;
}
public List<SubSkillCategory> getSubSkillCategories() {
return subSkillCategories;
}
public void setSubSkillCategories(List<SubSkillCategory> subSkillCategories) {
this.subSkillCategories = subSkillCategories;
}
public void addSubSkillCategory(SubSkillCategory subSkillCat){
subSkillCategories.add(subSkillCat);
}
}
SubSkillCategory.java class :
public class SubSkillCategory {
String nameSubSkillCat;
List<Skill> skills;
public SubSkillCategory(String nameSubSkillCat){
this.nameSubSkillCat = nameSubSkillCat;
this.skills = new ArrayList<Skill>();
}
public String getNameSubSkillCat() {
return nameSubSkillCat;
}
public void setNameSubSkillCat(String nameSubSkillCat) {
this.nameSubSkillCat = nameSubSkillCat;
}
public List<Skill> getSkills() {
return skills;
}
public void setSkills(List<Skill> skills) {
this.skills = skills;
}
public void addSkill(Skill skill){
skills.add(skill);
}
}
Skill.java Class :
public class Skill {
String nameSkill;
public Skill(String nameSkill){
this.nameSkill=nameSkill;
}
public String getNameSkill() {
return nameSkill;
}
public void setNameSkill(String nameSkill) {
this.nameSkill = nameSkill;
}
}
我的 MainReport.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="profile_report" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="40a9d14e-f38a-4588-b1d3-216588ae5e9a">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="0"/>
<style name="mainSkillCategory" hAlign="Left" vAlign="Middle" fontSize="12" isBold="true"/>
<parameter name="datasource_mainSkillCategories" isForPrompting="false" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<parameter name="subreport_subCat_parameter" class="net.sf.jasperreports.engine.JasperReport"/>
<parameter name="subreport_skill_parameter" class="net.sf.jasperreports.engine.JasperReport"/>
<field name = "nameMainSkillCat" class = "java.lang.String"/>
<detail>
<band height="108">
<textField isStretchWithOverflow = "true">
<reportElement style="mainSkillCategory" x="0" y="33" width="555" height="25" uuid="1e50be4f-2743-470c-a8ad-1fd91d99f786"/>
<textElement>
<font fontName="Calibri" size="12" isBold="true" pdfFontName="Calibri" isPdfEmbedded="true"/>
<paragraph spacingBefore="-15" tabStopWidth="24"/>
</textElement>
<textFieldExpression class = "java.lang.String">
<![CDATA[$F{nameMainSkillCat}]]>
</textFieldExpression>
</textField>
<subreport>
<reportElement positionType = "Float" x = "0" y = "10" width = "555" height = "10" isRemoveLineWhenBlank = "true" backcolor = "#99ccff"/>
<subreportParameter name="subreport_skill_parameter">
<subreportParameterExpression><![CDATA[$P{subreport_skill_parameter}]]></subreportParameterExpression>
</subreportParameter>
<subreportParameter name="datasource_skills">
<subreportParameterExpression><![CDATA[$P{subreport_skill_parameter}]]></subreportParameterExpression>
</subreportParameter>
<dataSourceExpression><![CDATA[$P{datasource_mainSkillCategories}]]></dataSourceExpression>
<subreportExpression class="net.sf.jasperreports.engine.JasperReport"><![CDATA[$P{subreport_subCat_parameter}]]></subreportExpression>
</subreport>
</band>
</detail>
</jasperReport>
我的 SubSkillCategory.jrxml :
<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="profile_report" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="40a9d14e-f38a-4588-b1d3-216588ae5e9a">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="0"/>
<style name="subSkillCategory" hAlign="Left" vAlign="Middle" fontSize="12" isBold="true"/>
<parameter name="datasource_skills" isForPrompting="false" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<parameter name="subreport_skill_parameter" class="net.sf.jasperreports.engine.JasperReport"/>
<field name = "nameSubSkillCat" class = "java.lang.String"/>
<detail>
<band height="100">
<textField isStretchWithOverflow = "true">
<reportElement style="subSkillCategory" x="0" y="0" width="555" height="9" uuid="e0c7832a-2099-4185-abcd-ad85dc935a86"/>
<textElement>
<font fontName="Calibri" size="12" isBold="true" pdfFontName="Calibri" isPdfEmbedded="true"/>
<paragraph spacingBefore="-15" tabStopWidth="30"/>
</textElement>
<textFieldExpression class = "java.lang.String">
<![CDATA[$F{nameSubSkillCat}]]>
</textFieldExpression>
</textField>
<subreport>
<reportElement positionType = "Float" x = "0" y = "10" width = "555" height = "10" isRemoveLineWhenBlank = "true" backcolor = "#99ccff"/>
<dataSourceExpression><![CDATA[$P{datasource_skills}]]></dataSourceExpression>
<subreportExpression class="net.sf.jasperreports.engine.JasperReport"><![CDATA[$P{subreport_skill_parameter}]]></subreportExpression>
</subreport>
</band>
</detail>
</jasperReport>
我的 Main.java :
public static void main(String[] args) {
try {
JasperReport jasperReportSKill = JasperCompileManager.compileReport("resources/subReport_skill.jrxml");
JasperReport jasperReportSubCat = JasperCompileManager.compileReport("resources/subReport_subCat.jrxml");
JasperReport jasperReportMainCat = JasperCompileManager.compileReport("resources/subReport_mainCat.jrxml");
JRBeanCollectionDataSource dataSource = new JRBeanCollectionDataSource(getMainSkillCategoryList());
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put("subreport_skill_parameter", jasperReportSKill);
parameters.put("subreport_subCat_parameter", jasperReportSubCat);
parameters.put("datasource_mainSkillCategories", dataSource);
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReportMainCat, parameters, new JREmptyDataSource());
//...
}
也就是说，当我尝试生成 MainReport 时，我得到了这个错误：java.lang.NoSuchMethodException: Unknown property 'nameSubSkillCat' on class 'class jasperReports.helloWorld.MainSkillCategory' 我认为这是合乎逻辑的，因为我正在传递给 SubReport_1（即 SubSkillCategory 报告）的数据源MainSkillCategory 报告。
现在我的问题是如何在 MainSkillCategory.jrxml 的子报表块中指定对当前 MainSkillCategory bean 的引用，以便我可以获得 "this.getSubSkillCategories()" 并将其作为我的 dataSourceExpression 传递给 SubReport_1.
抱歉，文字太长了，但我想提供源代码，这样任何人都可以知道问题到底是什么。预先感谢您的帮助。
我找到了问题的解决方案：我应该将现在的 List<SubSkillCategory> 定义为 MainSkillCategory.jrxml 中的一个字段。感谢 Ranjit 回答 @http://community.jaspersoft.com/questions/533552/solved-problem-passing-datasource-subreport.