JasperReports Subreport 实例

 公司的项目需要将数据导出为excel和pdf，之前用过vba和poi，这次要使用jasper reports，期间遇到一个关于subreport的问题，现已解决，放出给大家参考。

 

首先说明一下，subreport是iReport template编辑器中的一个概念，相当于主从关系，比如有主列表里面是国家名称，在每个国家名称下，会有不同的城市名称，这个城市列表就是subreport，是作为另一个独立的report被引用的。这里仅演示二级从属关系，按需求可以再使用subreport扩展为多层关系。

 

这是效果图:

 

开始贴代码：

@H_216_4@mainreport.jrxml(主表)

 

<?xml version="1.0" encoding="UTF-8"?> <jasperReport xmlns="<a href="http://code.js-code.com/tag/http/" target="_blank" class="keywords">http</a>://jasperreports<a href="http://code.js-code.com/tag/so/" target="_blank" class="keywords">.so</a>urceforge.net/jasperreports" xmlns:xsi="<a href="http://code.js-code.com/tag/http/" target="_blank" class="keywords">http</a>://www.w3<a href="http://code.js-code.com/tag/o/" target="_blank" class="keywords">.o</a>rg/2001/XML<a href="http://code.js-code.com/tag/sche/" target="_blank" class="keywords">sche</a>R_411_11845@a-instance" xsi:<a href="http://code.js-code.com/tag/sche/" target="_blank" class="keywords">sche</a>R_411_11845@a<a href="http://code.js-code.com/tag/LOCATIO/" target="_blank" class="keywords">LOCATIO</a>n="<a href="http://code.js-code.com/tag/http/" target="_blank" class="keywords">http</a>://jasperreports<a href="http://code.js-code.com/tag/so/" target="_blank" class="keywords">.so</a>urceforge.net/jasperreports <a href="http://code.js-code.com/tag/http/" target="_blank" class="keywords">http</a>://jasperreports<a href="http://code.js-code.com/tag/so/" target="_blank" class="keywords">.so</a>urceforge.net/xsd/jasperreport.xsd" name="mainreport" language="groovy" pageWidth="842" pageHeight="595" orientation="Landscape" <a href="http://code.js-code.com/tag/colum/" target="_blank" class="keywords">colum</a>nWidth="802" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20"> <property name="ireport.zoom" value="1.0"/> <property name="ireport.x" value="0"/> <property name="ireport.y" value="0"/> <parameter name="subReportOb<a href="http://code.js-code.com/tag/je/" target="_blank" class="keywords">je</a>ct" class="net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JasperReport" isForPromp<a href="http://code.js-code.com/tag/Tin/" target="_blank" class="keywords">Tin</a>g="<a href="http://code.js-code.com/tag/fal/" target="_blank" class="keywords">fal</a>se"/> <field name="countryName" class="java.lang.<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng"/> <field name="cityDs" class="net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.data.JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e"/> <variable name="countryName_1" class="java.lang.<a href="http://code.js-code.com/tag/Intege/" target="_blank" class="keywords">Intege</a>r" resetType="<a href="http://code.js-code.com/tag/colum/" target="_blank" class="keywords">colum</a>n" calculation="Dis<a href="http://code.js-code.com/tag/Tin/" target="_blank" class="keywords">Tin</a>ctCount"> <variableExpression><![CDATA[$F<a href="http://code.js-code.com/tag/C/" target="_blank" class="keywords">{C</a>ountryNam<a href="http://code.js-code.com/tag/E/" target="_blank" class="keywords">E}</a>]]></variableExpression> </variable> <<a href="http://code.js-code.com/tag/titl/" target="_blank" class="keywords">titl</a>e> <band height="71" splitType="Stretch"> <frame> <reportElement mode="Opaque" x="85" y="0" width="546" height="24" <a href="http://code.js-code.com/tag/BAC/" target="_blank" class="keywords">BAC</a>kcolor="#66FF33"/> </frame> <staticText> <reportElement x="85" y="24" width="546" height="47"/> <textElement textAlignment="Center"> <font size="24"/> </textElement> <text><![CDATA[JasperReports subreport Demo (V3.7.4)]]></text> </staticText> </band> </<a href="http://code.js-code.com/tag/titl/" target="_blank" class="keywords">titl</a>e> <pageHeader> <band height="38" splitType="Stretch"> <staticText> <reportElement x="85" y="0" width="546" height="38"/> <textElement verticalAlignment="Top"/> <text><![CDATA[this demo shows how to compose a classic <a href="http://code.js-code.com/tag/masterdetail/" target="_blank" class="keywords">master-detail</a> report. Master level is a country list,the detail level is the related cities list.]]></text> </staticText> </band> </pageHeader> <<a href="http://code.js-code.com/tag/colum/" target="_blank" class="keywords">colum</a>nHeader> <band height="20" splitType="Stretch"> <staticText> <reportElement x="85" y="0" width="100" height="20"/> <textElement> <font isBold="true"/> </textElement> <text><![CDATA[Country Name]]></text> </staticText> </band> </<a href="http://code.js-code.com/tag/colum/" target="_blank" class="keywords">colum</a>nHeader> <detail> <band height="94" splitType="Stretch"> <textField> <reportElement x="85" y="0" width="100" height="20"/> <textElement> <font isItalic="true"/> </textElement> <textFieldExpression class="java.lang.<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng"><![CDATA[$F<a href="http://code.js-code.com/tag/C/" target="_blank" class="keywords">{C</a>ountryNam<a href="http://code.js-code.com/tag/E/" target="_blank" class="keywords">E}</a>]]></textFieldExpression> </textField> <elementGroup> <subreport isUsingCache="true"> <reportElement positionType="Float" x="185" y="20" width="446" height="74"/> <data<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>eExpression><![CDATA[$F<a href="http://code.js-code.com/tag/C/" target="_blank" class="keywords">{C</a>ityDs}]]></data<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>eExpression> <subreportExpression class="net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JasperReport"><![CDATA[$P<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a>subReportOb<a href="http://code.js-code.com/tag/je/" target="_blank" class="keywords">je</a>ct}]]></subreportExpression> </subreport> </elementGroup> </band> </detail> <<a href="http://code.js-code.com/tag/colum/" target="_blank" class="keywords">colum</a>nFooter> <band height="20" splitType="Stretch"> <textField> <reportElement x="531" y="0" width="100" height="20"/> <textElement/> <textFieldExpression class="java.lang.<a href="http://code.js-code.com/tag/Intege/" target="_blank" class="keywords">Intege</a>r"><![CDATA[$V<a href="http://code.js-code.com/tag/C/" target="_blank" class="keywords">{C</a>ountryName_1}]]></textFieldExpression> </textField> <staticText> <reportElement x="431" y="0" width="100" height="20"/> <textElement textAlignment="Justified"> <font isBold="true"/> </textElement> <text><![CDATA[@R_448_1<a href="http://code.js-code.com/tag/058/" target="_blank" class="keywords">058</a>6@L Country : ]]></text> </staticText> </band> </<a href="http://code.js-code.com/tag/colum/" target="_blank" class="keywords">colum</a>nFooter> <pageFooter> <band height="20" splitType="Stretch"> <staticText> <reportElement x="350" y="0" width="100" height="20"/> <textElement> <font isItalic="true"/> </textElement> <text><![CDATA[Good luck!]]></text> </staticText> </band> </pageFooter> </jasperReport>

 

@H_216_4@mainreport_subreport2.jrxml (subreport)

<?xml version="1.0" encoding="UTF-8"?> <jasperReport xmlns="<a href="http://code.js-code.com/tag/http/" target="_blank" class="keywords">http</a>://jasperreports<a href="http://code.js-code.com/tag/so/" target="_blank" class="keywords">.so</a>urceforge.net/jasperreports" xmlns:xsi="<a href="http://code.js-code.com/tag/http/" target="_blank" class="keywords">http</a>://www.w3<a href="http://code.js-code.com/tag/o/" target="_blank" class="keywords">.o</a>rg/2001/XML<a href="http://code.js-code.com/tag/sche/" target="_blank" class="keywords">sche</a>R_411_11845@a-instance" xsi:<a href="http://code.js-code.com/tag/sche/" target="_blank" class="keywords">sche</a>R_411_11845@a<a href="http://code.js-code.com/tag/LOCATIO/" target="_blank" class="keywords">LOCATIO</a>n="<a href="http://code.js-code.com/tag/http/" target="_blank" class="keywords">http</a>://jasperreports<a href="http://code.js-code.com/tag/so/" target="_blank" class="keywords">.so</a>urceforge.net/jasperreports <a href="http://code.js-code.com/tag/http/" target="_blank" class="keywords">http</a>://jasperreports<a href="http://code.js-code.com/tag/so/" target="_blank" class="keywords">.so</a>urceforge.net/xsd/jasperreport.xsd" name="mainreport_subreport2" language="groovy" pageWidth="802" pageHeight="555" orientation="Landscape" whenNoDataType="AllSection<a href="http://code.js-code.com/tag/sno/" target="_blank" class="keywords">sno</a>Detail" <a href="http://code.js-code.com/tag/colum/" target="_blank" class="keywords">colum</a>nWidth="802" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" isIgnorePagination="true"> <property name="ireport.zoom" value="1.0"/> <property name="ireport.x" value="0"/> <property name="ireport.y" value="0"/> <field name="cityName" class="java.lang.<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng"/> <detail> <band height="20" splitType="Stretch"> <textField> <reportElement x="97" y="0" width="100" height="20"/> <textElement/> <textFieldExpression class="java.lang.<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng"><![CDATA[$F<a href="http://code.js-code.com/tag/C/" target="_blank" class="keywords">{C</a>ityNam<a href="http://code.js-code.com/tag/E/" target="_blank" class="keywords">E}</a>]]></textFieldExpression> </textField> </band> </detail> </jasperReport>

 

Country.java (主表对象)

package co<a href="http://code.js-code.com/tag/m/" target="_blank" class="keywords">m.</a>test; import java.uti<a href="http://code.js-code.com/tag/l/" target="_blank" class="keywords">l.</a>List; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.data.JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e; public class Country <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> private <a href="http://code.js-code.com/tag/intid/" target="_blank" class="keywords">int id</a>; private <a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng countryName; private JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e cityDs; public Country() <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> // TODO Auto-generated constructor <a href="http://code.js-code.com/tag/stu/" target="_blank" class="keywords">stu</a>b } public Country(<a href="http://code.js-code.com/tag/intid/" target="_blank" class="keywords">int id</a>,<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng countryName,JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e cityDs) <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> <a href="http://code.js-code.com/tag/super/" target="_blank" class="keywords">super()</a>; thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>id = id; thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>countryName = countryName; thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>cityDs = cityDs; } publi<a href="http://code.js-code.com/tag/cint/" target="_blank" class="keywords">c int</a> getId() <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> return id; } public void setId(<a href="http://code.js-code.com/tag/intid/" target="_blank" class="keywords">int id</a>) <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>id = id; } public <a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng getCountryName() <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> return countryName; } public void setCountryName(<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng country<a href="http://code.js-code.com/tag/Name/" target="_blank" class="keywords">Name)</a> <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>countryName = countryName; } public JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e getCityDs() <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> return cityDs; } public void setCityDs(JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e cityDs) <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>cityDs = cityDs; } }

 

City.java(从表对象)

package co<a href="http://code.js-code.com/tag/m/" target="_blank" class="keywords">m.</a>test; public class City <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> private <a href="http://code.js-code.com/tag/intid/" target="_blank" class="keywords">int id</a>; private <a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng cityName; public City() <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> // TODO Auto-generated constructor <a href="http://code.js-code.com/tag/stu/" target="_blank" class="keywords">stu</a>b } public City(<a href="http://code.js-code.com/tag/intid/" target="_blank" class="keywords">int id</a>,<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng city<a href="http://code.js-code.com/tag/Name/" target="_blank" class="keywords">Name)</a> <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> <a href="http://code.js-code.com/tag/super/" target="_blank" class="keywords">super()</a>; thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>id = id; thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>cityName = cityName; } publi<a href="http://code.js-code.com/tag/cint/" target="_blank" class="keywords">c int</a> getId() <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> return id; } public void setId(<a href="http://code.js-code.com/tag/intid/" target="_blank" class="keywords">int id</a>) <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>id = id; } public <a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng getCityName() <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> return cityName; } public void setCityName(<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng city<a href="http://code.js-code.com/tag/Name/" target="_blank" class="keywords">Name)</a> <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> thi<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a>cityName = cityName; } }

 

TestSubReport.java (main方法)

package co<a href="http://code.js-code.com/tag/m/" target="_blank" class="keywords">m.</a>test; /* * jasper report v3.7.4 */ import java.io.File; import java.uti<a href="http://code.js-code.com/tag/l/" target="_blank" class="keywords">l.</a>ArrayList; import java.uti<a href="http://code.js-code.com/tag/l/" target="_blank" class="keywords">l.</a>Calendar; import java.uti<a href="http://code.js-code.com/tag/l/" target="_blank" class="keywords">l.</a>HashMap; import java.uti<a href="http://code.js-code.com/tag/l/" target="_blank" class="keywords">l.</a>List; import java.uti<a href="http://code.js-code.com/tag/l/" target="_blank" class="keywords">l.</a>Map; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JRException; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JRExporter; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JRExporterParameter; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JasperCompileManager; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JasperFillManager; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JasperPrint; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.JasperReport; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.data.JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.design.JasperDesign; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.export.JRPdfExporter; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.export.JRXlsExporter; import net.sf.jasperreport<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">s.</a><a href="http://code.js-code.com/tag/ENGI/" target="_blank" class="keywords">ENGI</a>ne.xm<a href="http://code.js-code.com/tag/l/" target="_blank" class="keywords">l.</a>JRXmlLoader; public class TestSubReport <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> public TestSubReport() <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> // TODO Auto-generated constructor <a href="http://code.js-code.com/tag/stu/" target="_blank" class="keywords">stu</a>b } @SuppressWarnings("un<a href="http://code.js-code.com/tag/chec/" target="_blank" class="keywords">chec</a>ked") public static void main(<a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng[] args) throws JRException <a href="http://code.js-code.com/tag/" target="_blank" class="keywords">{</a> Sy<a href="http://code.js-code.com/tag/stem/" target="_blank" class="keywords">stem</a><a href="http://code.js-code.com/tag/o/" target="_blank" class="keywords">.o</a>ut.println("start"<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> //get *.jrxml JasperDesign jDesign = JRXmlLoader.load(new File("/test2/mainreport.jrxml")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> JasperDesign jDesign2 = JRXmlLoader.load(new File("/test2/mainreport_subreport2.jrxml")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> //export fil<a href="http://code.js-code.com/tag/ename/" target="_blank" class="keywords">ename</a> <a href="http://code.js-code.com/tag/Stri/" target="_blank" class="keywords">Stri</a>ng fil<a href="http://code.js-code.com/tag/ename/" target="_blank" class="keywords">ename</a> = "subReport-on"+Calendar.ge<a href="http://code.js-code.com/tag/Tin/" target="_blank" class="keywords">Tin</a>stance().getTimeInMillis(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> //get *.jasper JasperReport jReport = JasperCompileManager.compileReport(jDesign<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> JasperReport jReport2 = JasperCompileManager.compileReport(jDesig<a href="http://code.js-code.com/tag/n2/" target="_blank" class="keywords">n2)</a>; //fill data List data = new ArrayList(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> List list1 = new ArrayList(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> list1.add(new City(1,"suzhou")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> list1.add(new City(2,"shanghai")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> list1.add(new City(3,"beijing")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> List list2 = new ArrayList(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> list2.add(new City(4,"New York")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> list2.add(new City(5,"San Francisco")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> List list3 = new ArrayList(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> list3.add(new City(6,"London")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> list3.add(new City(7,"Not<a href="http://code.js-code.com/tag/Tin/" target="_blank" class="keywords">Tin</a>ghamshire")<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e ds1 = new JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e(list1<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e ds2 = new JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e(list2<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e ds3 = new JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e(list3<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> data.add(new Country(1,"China",ds1)<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> data.add(new Country(2,"USA",ds2)<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> data.add(new Country(3,"UK",ds3)<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> Map map = new HashMap(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> ma<a href="http://code.js-code.com/tag/pp/" target="_blank" class="keywords">p.p</a>ut("subReportOb<a href="http://code.js-code.com/tag/je/" target="_blank" class="keywords">je</a>ct",jReport2<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a>//subReport put here. JasperPrint jPrint = JasperFillManager.fillReport(jReport,map,new JRBeanCollectionData<a href="http://code.js-code.com/tag/sourc/" target="_blank" class="keywords">sourc</a>e(data)<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> //export with pdf JRExporter <a href="http://code.js-code.com/tag/je/" target="_blank" class="keywords">je</a>xporter = new JRPdfExporter(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> <a href="http://code.js-code.com/tag/je/" target="_blank" class="keywords">je</a>xporter.setParameter(JRExporterParameter<a href="http://code.js-code.com/tag/o/" target="_blank" class="keywords">.o</a>UTPUT_<a href="http://code.js-code.com/tag/filename/" target="_blank" class="keywords">file_name</a>,fil<a href="http://code.js-code.com/tag/ename/" target="_blank" class="keywords">ename</a>+".pdf"<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> <a href="http://code.js-code.com/tag/je/" target="_blank" class="keywords">je</a>xporter.setParameter(JRExporterParameter.JASPER_PRINT,jPr<a href="http://code.js-code.com/tag/int/" target="_blank" class="keywords">int)</a>; <a href="http://code.js-code.com/tag/je/" target="_blank" class="keywords">je</a>xporter.exportReport(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> //export with xls JRXlsExporter jXlsExporter = new JRXlsExporter(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> jXlsExporter.setParameter(JRExporterParameter<a href="http://code.js-code.com/tag/o/" target="_blank" class="keywords">.o</a>UTPUT_<a href="http://code.js-code.com/tag/filename/" target="_blank" class="keywords">file_name</a>,fil<a href="http://code.js-code.com/tag/ename/" target="_blank" class="keywords">ename</a>+".xls"<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> jXlsExporter.setParameter(JRExporterParameter.JASPER_PRINT,jPr<a href="http://code.js-code.com/tag/int/" target="_blank" class="keywords">int)</a>; jXlsExporter.exportReport(<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> Sy<a href="http://code.js-code.com/tag/stem/" target="_blank" class="keywords">stem</a><a href="http://code.js-code.com/tag/o/" target="_blank" class="keywords">.o</a>ut.println(file<a href="http://code.js-code.com/tag/Name/" target="_blank" class="keywords">Name)</a>; Sy<a href="http://code.js-code.com/tag/stem/" target="_blank" class="keywords">stem</a><a href="http://code.js-code.com/tag/o/" target="_blank" class="keywords">.o</a>ut.println("end"<a href="http://code.js-code.com/tag/" target="_blank" class="keywords">);</a> } }

 

总结：

其实subreport是和主表一起在后台被预编译，然后作为parameter 设置给主表，在主表的subreport标签中被引用，同时subreport的datasource同样是从主表的field中传参过去。