在jaspersoft studio中使用多个数据源 [英] Working with multiple data sources in jaspersoft studio
本文介绍了在jaspersoft studio中使用多个数据源的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
根据
问题出在FillTable类中，当我们字符串kNFormelGG =（String）this.getParameterValue（gg）; 创建的bean.xml使测试连接失败 java.lang.reflect.InvocationTargetException
引起：java.lang.NullPointerException
at net.sf.jasperreports.engine.JRAbstractScriptlet.getParameterValue（JRAbstractScriptlet.java:95）
at net.sf.jasperreports.engine.JRAbstractScriptlet .getParameterValue（JRAbstractScriptlet.java:86）
at org.iqtig.reporting.dataSource.bean.dataSourceXML.FillTable.fillTable（FillTable.java:45）
at org.iqtig.reporting.dataSource.bean.dataSourceXML.JRDataSourceFactory.createCollection（JRDataSourceFactory.java:27）
... 34更多
如果我指定修复值，如字符串kNFormelGG =测试我 bean连接遇到没有错误，之后将bean.xml指定为Dataset1中的Default Data Adapter的值，它使用静态值填充表。
如何从主报表数据源动态获取参数或值中的数据并在bean中使用它？
我有这样的假设：在从我的适配器调用静态工厂类时，字段仍为空。也许我错了，但我没有找到任何其他声明来解决这个问题。
BeanFactory类
import java .util.Collection;
import net.sf.jasperreports.engine.JRDefaultScriptlet;
import net.sf.jasperreports.engine.JRScriptletException;
/ **
* TableCellsBean Klasse的工厂
*
* @author iman.gharib
* /
public类JRDataSourceFactory扩展JRDefaultScriptlet {
/ **
* @return collection der TableCellsBean Objekten
* @throws JRScriptletException
* /
public static Collection< TableCellsBean> ; createCollection（）
抛出JRScriptletException {
FillTable ft = new FillTable（）;
Collection< TableCellsBean> reportRows = ft.fillTable（）;
返回reportRows;
}
}
Bean Class
public class TableCellsBean {
private String fieldName;
private String keyFormel;
private String mK;
private String表示法;
私有字符串项;
/ **
*构造函数。
*
* @param fieldName
* @param keyFormel
* @param mK
* @param notation
* @param item
* /
public TableCellsBean（final String fieldName，final String keyFormel，final String mK，final String notation，final String item）{
this.fieldName = fieldName;
this.keyFormel = keyFormel;
this.mK = mK;
this.notation =表示法;
this.item = item;
}
/ **
* Constructo Leer
* /
public TableCellsBean（）{
}
public TableCellsBean getme（）{
return this;
}
// getter and setters
}
准备和创建bean的类
公共类FillTable扩展JRDefaultScriptlet {
@Override
public void afterColumnInit（）
抛出JRScriptletException {
fillTable（）;
}
public ArrayList< String> splitGGArray（final String kNFormelGG）{
ArrayList< String> fieldNames = new ArrayList<>（）;
String [] array =（kNFormelGG.split（））;
for（String sub：array）{
fieldNames.add（sub）;
}
返回fieldNames;
}
public Collection< TableCellsBean> fillTable（）
抛出JRScriptletException {
// gg是表数据集的参数。它映射到KN_FormelGG
//来自主报表数据库
String kNFormelGG =（String）this.getParameterValue（gg）;
List< TableCellsBean> listTableCells = new ArrayList<>（）;
// TableCellsBean tableCell = new TableCellsBean（）;
for（String fn：splitGGArray（kNFormelGG））{
listTableCells.add（new TableCellsBean（fn，fn，fn，fn，fn））;
// listTableCells.add（tableCell）;
}
// JRBeanCollectionDataSource tableCellJRBean = new JRBeanCollectionDataSource（listTableCells）;
// Map< String，Object> parameters = new HashMap<>（）;
// parameters.put（FieldDataSource，tableCellJRBean）;
返回listTableCells;
}
}
JRXML
<？xml version =1.0encoding =UTF-8？>
<！ - 使用Jasperoftport版本6.3.0创建的Jaspersoft Studio版本6.3.0.final - >
<！ - 2016-08-08T14：30：03 - >
< jasperReport xmlns =http://jasperreports.sourceforge.net/jasperreportsxmlns：xsi =http://www.w3.org/2001/XMLSchema-instancexsi：schemaLocation =http： //jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsdname =mainpageWidth =595pageHeight =842columnWidth =555leftMargin =20 rightMargin =20topMargin =20bottomMargin =20uuid =4f1480cf-f8f9-420f-96b4-7fc1e41e791b>
< property name =com.jaspersoft.studio.data.sql.tablesvalue =/>
< property name =com.jaspersoft.studio.data.defaultdataadaptervalue =QIDBReport/>
< style name =Table_THmode =Opaquebackcolor =＃F0F8FF>
< box>
< pen lineWidth =0.5lineColor =＃000000/>
< topPen lineWidth =0.5lineColor =＃000000/>
< leftPen lineWidth =0.5lineColor =＃000000/>
< bottomPen lineWidth =0.5lineColor =＃000000/>
< rightPen lineWidth =0.5lineColor =＃000000/>
< / box>
< / style>
< style name =Table_CHmode =Opaquebackcolor =＃BFE1FF>
< box>
< pen lineWidth =0.5lineColor =＃000000/>
< topPen lineWidth =0.5lineColor =＃000000/>
< leftPen lineWidth =0.5lineColor =＃000000/>
< bottomPen lineWidth =0.5lineColor =＃000000/>
< rightPen lineWidth =0.5lineColor =＃000000/>
< / box>
< / style>
< style name =Table_TDmode =Opaquebackcolor =＃FFFFFF>
< box>
< pen lineWidth =0.5lineColor =＃000000/>
< topPen lineWidth =0.5lineColor =＃000000/>
< leftPen lineWidth =0.5lineColor =＃000000/>
< bottomPen lineWidth =0.5lineColor =＃000000/>
< rightPen lineWidth =0.5lineColor =＃000000/>
< / box>
< / style>
< subDataset name =Dataset1uuid =5677929d-813b-4d39-828c-de966a9d7689>
< property name =com.jaspersoft.studio.data.defaultdataadaptervalue =bean.xml/>
< property name =net.sf.jasperreports.data.adaptervalue =bean.xml/>
< scriptlet name =Scriptlet_1class =org.iqtig.reporting.dataSource.bean.mapBeanAsDatasource.JRDataSourceFactory/>
< parameter name =ggclass =java.lang.String/>
< field name =itemclass =java.lang.String>
< fieldDescription><！[CDATA [item]]>< / fieldDescription>
< / field>
< field name =fieldNameclass =java.lang.String>
< fieldDescription><！[CDATA [fieldName]]>< / fieldDescription>
< / field>
< field name =meclass =org.iqtig.reporting.dataSource.bean.dataSourceXML.TableCellsBean>
< fieldDescription><！[CDATA [me]]>< / fieldDescription>
< / field>
< field name =keyFormelclass =java.lang.String>
< fieldDescription><！[CDATA [keyFormel]]>< / fieldDescription>
< / field>
< field name =mKclass =java.lang.String>
< fieldDescription><！[CDATA [mK]]>< / fieldDescription>
< / field>
< / subDataset>
< parameter name =LB_IDclass =java.lang.Integer>
< defaultValueExpression><！[CDATA [62]]>< / defaultValueExpression>
< /参数>
< parameter name =KN_OffeziellGruppeclass =java.lang.Integer>
< defaultValueExpression><！[CDATA [3]]>< / defaultValueExpression>
< /参数>
< parameter name =FieldDataSourceclass =net.sf.jasperreports.engine.data.JRBeanCollectionDataSourceisForPrompting =false/>
< parameter name =KN_FormelGGclass =java.lang.StringisForPrompting =false/>
< queryString>
<！[CDATA [select * fromKennzahlReferenz2015_QIBericht，Images
其中LB_ID = $ P {LB_ID}
和KN_OffiziellGruppe = $ P {KN_OffeziellGruppe}
和IMG_ID = 1]]>
< / queryString>
< field name =QI_Praefixclass =java.lang.String/>
< field name =KN_Idclass =java.lang.Integer/>
< field name =bewertungsArtTypNameKurzclass =java.lang.String/>
< field name =refbereichclass =java.lang.String/>
< field name =refbereichVorjahresclass =java.lang.String/>
< field name =KN_GGAlleinstehendclass =java.lang.String/>
< field name =erlaueterungDerRechregelnclass =java.lang.String/>
< field name =teildatensatzbezugclass =java.lang.String/>
< field name =mindesanzahlZaelerclass =java.lang.Integer/>
< field name =mindesanzahlNennerclass =java.lang.Integer/>
< field name =KN_FormelZclass =java.lang.String/>
< field name =KN_FormelGGclass =java.lang.String/>
< field name =verwendeteFunktionenclass =java.lang.String/>
< field name =idLbclass =java.lang.String/>
< field name =LB_LangBezeichnungclass =java.lang.String/>
< field name =LB_IDclass =java.lang.Integer/>
< field name =nameAlleinstehendclass =java.lang.String/>
< field name =KN_BezeichnungAlleinstehendKurzclass =java.lang.String/>
< field name =QI_IDclass =java.lang.Integer/>
< field name =IMG_IDclass =java.lang.Integer/>
< field name =Nameclass =java.lang.String/>
< field name =Imageclass =java.lang.Object/>
< group name =idisStartNewPage =true>
< groupExpression><！[CDATA [$ F {KN_Id}]]>< / groupExpression>
< groupHeader>
< band height =44/>
< / groupHeader>
< groupFooter>
< band height =50/>
< / groupFooter>
< / group>
< background>
< band splitType =Stretch/>
< / background>
< title>
< band height =44splitType =Stretch/>
< / title>
< pageHeader>
< band height =35splitType =Stretch/>
< / pageHeader>
< columnHeader>
< band height =34splitType =Stretch/>
< / columnHeader>
< detail>
< band height =149splitType =Stretch>
< componentElement>
< reportElement x =170y =20width =350height =100uuid =38d917fb-dfc2-4c08-890a-09cfe6e2214d>
< property name =com.jaspersoft.studio.layoutvalue =com.jaspersoft.studio.editor.layout.VerticalRowLayout/>
< property name =com.jaspersoft.studio.table.style.table_headervalue =Table_TH/>
< property name =com.jaspersoft.studio.table.style.column_headervalue =Table_CH/>
< property name =com.jaspersoft.studio.table.style.detailvalue =Table_TD/>
< property name =net.sf.jasperreports.export.headertoolbar.table.namevalue =/>
< property name =com.jaspersoft.studio.components.autoresize.proportionalvalue =true/>
< / reportElement>
< jr：table xmlns：jr =http://jasperreports.sourceforge.net/jasperreports/componentsxsi：schemaLocation =http://jasperreports.sourceforge.net/jasperreports/components http：// jasperreports.sourceforge.net/xsd/components.xsdwhenNoDataType =AllSectionsNoDetail>
< datasetRun subDataset =Dataset1uuid =1b3548f6-7d6b-4070-bb8e-aaefbabdc7c9>
< datasetParameter name =gg>
< datasetParameterExpression><！[CDATA [$ F {KN_FormelGG]]]>< / datasetParameterExpression>
< / datasetParameter>
< / datasetRun>
< jr：column width =70uuid =048812d7-0ed1-4db8-a09a-e6242f77c6ce>
< property name =com.jaspersoft.studio.components.table.model.column.namevalue =Column1/>
< jr：tableHeader style =Table_THheight =30rowSpan =1/>
< jr：detailCell style =Table_TDheight =30>
< textField>
< reportElement x =0y =0width =70height =30uuid =c5aaea84-1367-41df-be8d-7f71e3ea5153/>
< textFieldExpression><！[CDATA [$ F {item}]]>< / textFieldExpression>
< / textField>
< / jr：detailCell>
< / jr：column>
< jr：column width =70uuid =11b85ada-c9fe-42b6-a646-8bd1697cdec2>
< property name =com.jaspersoft.studio.components.table.model.column.namevalue =Column2/>
< jr：tableHeader style =Table_THheight =30rowSpan =1/>
< jr：detailCell style =Table_TDheight =30>
< textField>
< reportElement x =0y =0width =70height =30uuid =728ff44d-1dbd-404c-b8b3-7cc0e1f07f60/>
< textFieldExpression><！[CDATA [$ F {fieldName}]]>< / textFieldExpression>
< / textField>
< / jr：detailCell>
< / jr：column>
< jr：column width =70uuid =892f30cb-fb41-444f-889b-1e005484c35e>
< property name =com.jaspersoft.studio.components.table.model.column.namevalue =Column3/>
< jr：tableHeader style =Table_THheight =30rowSpan =1/>
< jr：detailCell style =Table_TDheight =30>
< textField>
< reportElement x =0y =0width =70height =30uuid =e38ac951-71bc-45a6-8ed2-313805a77050/>
< textFieldExpression><！[CDATA [$ F {keyFormel}]]>< / textFieldExpression>
< / textField>
< / jr：detailCell>
< / jr：column>
< jr：column width =70uuid =7d0d700a-5a75-4c26-94c0-9ef7c53bd719>
< property name =com.jaspersoft.studio.components.table.model.column.namevalue =Column4/>
< jr：tableHeader style =Table_THheight =30rowSpan =1>
< textField>
< reportElement x =0y =0width =70height =30uuid =68577007-0344-406c-8aa2-3127d1da1c65/>
< / textField>
< / jr：tableHeader>
< jr：detailCell style =Table_TDheight =30>
< textField>
< reportElement x =0y =0width =70height =30uuid =873d63c1-1b91-4441-b7bd-f67db7729e7f/>
< textFieldExpression><！[CDATA [$ F {mK}]]>< / textFieldExpression>
< / textField>
< / jr：detailCell>
< / jr：column>
< jr：column width =70uuid =cf5a1a2f-594d-429f-8925-62d001e1dd00>
< property name =com.jaspersoft.studio.components.table.model.column.namevalue =Column5/>
< jr：tableHeader style =Table_THheight =30rowSpan =1>
< textField>
< reportElement x =0y =0width =70height =30uuid =7fb46eb8-d0e1-44ab-89f9-ec31d49b8109/>
< textFieldExpression><！[CDATA [$ P {gg}]]>< / textFieldExpression>
< / textField>
< / jr：tableHeader>
< jr：detailCell style =Table_TDheight =30/>
< / jr：column>
< / jr：table>
< / componentElement>
< textField>
< reportElement x =20y =80width =100height =30uuid =b89cd04c-2569-43ef-9730-445b874855dd/>
< textFieldExpression><！[CDATA [$ F {KN_FormelGG]]]>< / textFieldExpression>
< / textField>
< staticText>
< reportElement x =20y =32width =100height =30uuid =e91b4461-5e53-4f85-8992-14e69a1aa05f/>
< text><！[CDATA [KN_FormelGG]]>< / text>
< / staticText>
< / band>
< / detail>
< columnFooter>
< band height =45splitType =Stretch/>
< / columnFooter>
< pageFooter>
< band height =54splitType =Stretch/>
< / pageFooter>
< summary>
< band height =42splitType =Stretch/>
< / summary>
< / jasperReport>
解决方案
我的目标是从主报表中获取一个字段值并操作
其值，然后用这些值填充bean，最后用bean填充
表。
我将忽略所有的scriplet和其他代码，并向您展示使用当前字段，变量或参数值为另一个组件创建动态数据源的最简单方法。
作为示例，我们将在field1（row1，row2）中包含这些String值
Test1_1.23：Test2_4.32：Test3_1.08
Test1_2.12：Test2_5.12：Test3_2.13
我们希望拆分：并创建行（bean列表），然后拆分 _ 创建列（bean上的属性）并在 jr：table 组件中显示它。
java code（或Bean）
public class TableCellsBea n {
私人字符串名称;
私人双倍价值;
public TableCellsBean（String name，double value）{
this.name = name;
this.value = value;
}
public static JRBeanCollectionDataSource getDatasource（String fieldValue）{
List< TableCellsBean> retList = new ArrayList<>（）;
String [] values = fieldValue.split（：）;
for（String v：values）{
String [] sp = v.split（_）;
retList.add（new TableCellsBean（sp [0]，Double.parseDouble（sp [1]）））;
}
返回新的JRBeanCollectionDataSource（retList）;
}
public String getName（）{
return name;
}
public void setName（String name）{
this.name = name;
}
public double getValue（）{
返回值;
}
public void setValue（double value）{
this.value = value;
}
}
正如您在此bean类中已经看到的那样我有添加了一个静态方法，该方法返回 JRBeanCollectionDataSource ，具体取决于作为参数传递的值。
基本上你传递 fieldValue 对于这个方法，它做了一些逻辑，创建 TableCellBean ，将它们添加到列表并返回 JRBeanCollectionDataSource
注意：该方法不需要是静态的，也不需要在此内部类，不考虑异常处理。
报告 - jrxml
在示例中，我们将在行1上包含 field1 ，其中包含 Test1_1.23：Test2_4.32：Test3_1.08 code> Test1_2.12：Test2_5.12：Test3_2.13 在第2行。
我们定义一个表示out <的子数据集 TableCellsBean
< subDataset name =table_datas etuuid =4dc1b0fb-2588-4f98-8c8d-f0afefbb2fd1>
< field name =nameclass =java.lang.String/>
< field name =valueclass =java.lang.Double/>
< / subDataset>
作为数据源，我们调用静态方法传递 field1 当前行中的内容。
< dataSourceExpression><！[CDATA [my.package.TableCellsBean.getDatasource（$ ˚F{FIELD1}）]]>< / dataSourceExpression>
完整jrxml
<？xml version =1.0encoding =UTF-8？>
< jasperReport xmlns =http://jasperreports.sourceforge.net/jasperreportsxmlns：xsi =http://www.w3.org/2001/XMLSchema-instancexsi：schemaLocation =http： //jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsdname =testlanguage =javapageWidth =595pageHeight =842columnWidth =555 leftMargin =20rightMargin =20topMargin =20bottomMargin =20uuid =886a547e-11bd-434b-a330-d93ee5e4a280>
< style name =table>
< box>
< pen lineWidth =1.0lineColor =＃000000/>
< / box>
< / style>
< style name =table_THmode =Opaquebackcolor =＃F0F8FF>
< box>
< pen lineWidth =0.5lineColor =＃000000/>
< / box>
< / style>
< style name =table_CHmode =Opaquebackcolor =＃BFE1FF>
< box>
< pen lineWidth =0.5lineColor =＃000000/>
< / box>
< / style>
< style name =table_TDmode =Opaquebackcolor =＃FFFFFF>
< box>
< pen lineWidth =0.5lineColor =＃000000/>
< / box>
< / style>
< subDataset name =table_datasetuuid =4dc1b0fb-2588-4f98-8c8d-f0afefbb2fd1>
< field name =nameclass =java.lang.String/>
< field name =valueclass =java.lang.Double/>
< / subDataset>
< field name =field1class =java.lang.String>
< fieldDescription><！[CDATA [_THIS]]>< / fieldDescription>
< / field>
< detail>
< band height =40splitType =Stretch>
< textField>
< reportElement x =0y =0width =555height =20uuid =a73343b1-ccb2-4a59-b882-381b98efd664/>
< textElement verticalAlignment =Middle/>
< textFieldExpression><！[CDATA [$ F {field1}]]>< / textFieldExpression>
< / textField>
< componentElement>
< reportElement key =tablestyle =tablex =0y =20width =555height =20uuid =09a9a5b8-499b-40d2-b391-ece25772a31e />
< jr：table xmlns：jr =http://jasperreports.sourceforge.net/jasperreports/componentsxsi：schemaLocation =http://jasperreports.sourceforge.net/jasperreports/components http：// jasperreports.sourceforge.net/xsd/components.xsd\">
< datasetRun subDataset =table_datasetuuid =05601bdb-5579-4253-90f7-6742739d9714>
< dataSourceExpression><！[CDATA [bounty.TableCellsBean.getDatasource（$ F {field1}）]]>< / dataSourceExpression>
< / datasetRun>
< jr：column width =90uuid =afbbb3d0-573a-495d-ab51-0ae4d601e6fb>
< jr：tableHeader style =table_THheight =20rowSpan =1>
< staticText>
< reportElement x =0y =0width =90height =20uuid =e476f026-bbec-4b19-9bd4-f4b21f3377ef/>
< textElement textAlignment =CenterverticalAlignment =Middle/>
< text><！[CDATA [Name]]>< / text>
< / staticText>
< / jr：tableHeader>
< jr：detailCell style =table_TDheight =20rowSpan =1>
< textField>
< reportElement x =0y =0width =90height =20uuid =49cac181-b16b-4ab3-b600-78a56fb0f42b/>
< box leftPadding =3rightPadding =3/>
< textElement verticalAlignment =Middle/>
< textFieldExpression><！[CDATA [$ F {name}]]>< / textFieldExpression>
< / textField>
< / jr：detailCell>
< / jr：column>
< jr：column width =90uuid =4a1b0759-c347-4294-82c5-3aed4762f0c4>
< jr：tableHeader style =table_THheight =20rowSpan =1>
< staticText>
< reportElement x =0y =0width =90height =20uuid =bfa965b5-b5a4-484d-bfbd-d8bc753718b1/>
< textElement textAlignment =CenterverticalAlignment =Middle/>
< text><！[CDATA [Value]]>< / text>
< / staticText>
< / jr：tableHeader>
< jr：detailCell style =table_TDheight =20rowSpan =1>
< textField>
< reportElement x =0y =0width =90height =20uuid =925192bc-a761-48f5-bad5-097d15587198/>
< box leftPadding =3rightPadding =3/>
< textElement textAlignment =rightverticalAlignment =Middle/>
< textFieldExpression><！[CDATA [$ F {value}]]>< / textFieldExpression>
< / textField>
< / jr：detailCell>
< / jr：column>
< / jr：table>
< / componentElement>
< / band>
< / detail>
< / jasperReport>
测试示例
添加要导出为pdf的主要方法
public static void main（String [] args）抛出JRException {
//编译报告
JasperReport报告= JasperCompileManager.compileReport（myJasperReport.jrxml）;
//设置一些任意数据来测试数据源的自动创建
List< String> someData = new ArrayList<>（）;
someData.add（Test1_1.23：Test2_4.32：Test3_1.08）;
someData.add（Test1_2.12：Test2_5.12：Test3_2.13）;
//填写报告
JasperPrint jasperPrint = JasperFillManager.fillReport（报告，新的HashMap<>（），新的JRBeanCollectionDataSource（someData））;
//导出为pdf
JRPdfExporter exporter = new JRPdfExporter（）;
exporter.setExporterInput（new SimpleExporterInput（jasperPrint））;
exporter.setExporterOutput（new SimpleOutputStreamExporterOutput（myJasperReport.pdf））;
SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration（）;
exporter.setConfiguration（配置）;
exporter.exportReport（）;
}
输出
结论
提供具有自定义数据源的组件的最简单方法在运行报告值（字段，变量，参数）时，是创建一个生成数据源的方法，并在 dataSourceExpression中调用它
After being able to add custom data source from java bean to a report according to Add custom data source to Jaspersoft Studio , I get to the second point of my reporting with jasper.
I have a main report which uses a data base as its data source. Then I add a bean.xml data source to the report and add a table to the main report which uses this bean.xml data source to get java beans.
My goal is to get a field value from the main report and manipulate its value, then fill the beans with these values and at last fill the table with the beans.
To do this I have written 3 classes which I use as Scriptlet in the table data set:
This is an illustration of what I need to do:
The problem is in FillTable class, when I us String kNFormelGG = (String) this.getParameterValue("gg"); the created bean.xml fails the test connection with java.lang.reflect.InvocationTargetException
Caused by: java.lang.NullPointerException
at net.sf.jasperreports.engine.JRAbstractScriptlet.getParameterValue(JRAbstractScriptlet.java:95)
at net.sf.jasperreports.engine.JRAbstractScriptlet.getParameterValue(JRAbstractScriptlet.java:86)
at org.iqtig.reporting.dataSource.bean.dataSourceXML.FillTable.fillTable(FillTable.java:45)
at org.iqtig.reporting.dataSource.bean.dataSourceXML.JRDataSourceFactory.createCollection(JRDataSourceFactory.java:27)
... 34 more
If I assign a fix value like String kNFormelGG ="Test me" the bean connection encounters no error and after assigning bean.xml as the value for Default Data Adapter in Dataset1 it fills the table with static values.
How can get the data from a parameter or a value dynamically from the main report data source and use it in beans?
I have this assumption that at the time of calling the static factory class from my adapter, the fields are still empty. Maybe I am wrong but I do not find any other declaration for this problem.
BeanFactory Class
import java.util.Collection;
import net.sf.jasperreports.engine.JRDefaultScriptlet;
import net.sf.jasperreports.engine.JRScriptletException;
/**
* Factory for TableCellsBean Klasse
*
* @author iman.gharib
*/
public class JRDataSourceFactory extends JRDefaultScriptlet {
/**
* @return collection der TableCellsBean Objekten
* @throws JRScriptletException
*/
public static Collection<TableCellsBean> createCollection()
throws JRScriptletException {
FillTable ft = new FillTable();
Collection<TableCellsBean> reportRows = ft.fillTable();
return reportRows;
}
}
Bean Class
public class TableCellsBean {
private String fieldName;
private String keyFormel;
private String mK;
private String notation;
private String item;
/**
* Constructor.
*
* @param fieldName
* @param keyFormel
* @param mK
* @param notation
* @param item
*/
public TableCellsBean(final String fieldName, final String keyFormel, final String mK, final String notation, final String item) {
this.fieldName = fieldName;
this.keyFormel = keyFormel;
this.mK = mK;
this.notation = notation;
this.item = item;
}
/**
* Constructo Leer
*/
public TableCellsBean() {
}
public TableCellsBean getme() {
return this;
}
// getter and setters
}
Class for preparing and creating beans
public class FillTable extends JRDefaultScriptlet {
@Override
public void afterColumnInit()
throws JRScriptletException {
fillTable();
}
public ArrayList<String> splitGGArray(final String kNFormelGG) {
ArrayList<String> fieldNames = new ArrayList<>();
String[] array = (kNFormelGG.split(" "));
for (String sub : array) {
fieldNames.add(sub);
}
return fieldNames;
}
public Collection<TableCellsBean> fillTable()
throws JRScriptletException {
// gg is a parameter for table dataset. It is mapped to KN_FormelGG
// which comes from the main report data base
String kNFormelGG = (String) this.getParameterValue("gg");
List<TableCellsBean> listTableCells = new ArrayList<>();
// TableCellsBean tableCell = new TableCellsBean();
for (String fn : splitGGArray(kNFormelGG)) {
listTableCells.add(new TableCellsBean(fn, fn, fn, fn, fn));
// listTableCells.add(tableCell);
}
// JRBeanCollectionDataSource tableCellJRBean = new JRBeanCollectionDataSource(listTableCells);
// Map<String, Object> parameters = new HashMap<>();
// parameters.put("FieldDataSource", tableCellJRBean);
return listTableCells;
}
}
JRXML
<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.3.0.final using JasperReports Library version 6.3.0 -->
<!-- 2016-08-08T14:30:03 -->
<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="main" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="4f1480cf-f8f9-420f-96b4-7fc1e41e791b">
<property name="com.jaspersoft.studio.data.sql.tables" value=""/>
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="QIDBReport"/>
<style name="Table_TH" mode="Opaque" backcolor="#F0F8FF">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
<topPen lineWidth="0.5" lineColor="#000000"/>
<leftPen lineWidth="0.5" lineColor="#000000"/>
<bottomPen lineWidth="0.5" lineColor="#000000"/>
<rightPen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="Table_CH" mode="Opaque" backcolor="#BFE1FF">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
<topPen lineWidth="0.5" lineColor="#000000"/>
<leftPen lineWidth="0.5" lineColor="#000000"/>
<bottomPen lineWidth="0.5" lineColor="#000000"/>
<rightPen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="Table_TD" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
<topPen lineWidth="0.5" lineColor="#000000"/>
<leftPen lineWidth="0.5" lineColor="#000000"/>
<bottomPen lineWidth="0.5" lineColor="#000000"/>
<rightPen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<subDataset name="Dataset1" uuid="5677929d-813b-4d39-828c-de966a9d7689">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="bean.xml"/>
<property name="net.sf.jasperreports.data.adapter" value="bean.xml"/>
<scriptlet name="Scriptlet_1" class="org.iqtig.reporting.dataSource.bean.mapBeanAsDatasource.JRDataSourceFactory"/>
<parameter name="gg" class="java.lang.String"/>
<field name="item" class="java.lang.String">
<fieldDescription><![CDATA[item]]></fieldDescription>
</field>
<field name="fieldName" class="java.lang.String">
<fieldDescription><![CDATA[fieldName]]></fieldDescription>
</field>
<field name="me" class="org.iqtig.reporting.dataSource.bean.dataSourceXML.TableCellsBean">
<fieldDescription><![CDATA[me]]></fieldDescription>
</field>
<field name="keyFormel" class="java.lang.String">
<fieldDescription><![CDATA[keyFormel]]></fieldDescription>
</field>
<field name="mK" class="java.lang.String">
<fieldDescription><![CDATA[mK]]></fieldDescription>
</field>
</subDataset>
<parameter name="LB_ID" class="java.lang.Integer">
<defaultValueExpression><![CDATA[62]]></defaultValueExpression>
</parameter>
<parameter name="KN_OffeziellGruppe" class="java.lang.Integer">
<defaultValueExpression><![CDATA[3]]></defaultValueExpression>
</parameter>
<parameter name="FieldDataSource" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource" isForPrompting="false"/>
<parameter name="KN_FormelGG" class="java.lang.String" isForPrompting="false"/>
<queryString>
<![CDATA[select * from "KennzahlReferenz2015_QIBericht", "Images"
where LB_ID = $P{LB_ID}
and KN_OffiziellGruppe = $P{KN_OffeziellGruppe}
and IMG_ID = 1]]>
</queryString>
<field name="QI_Praefix" class="java.lang.String"/>
<field name="KN_Id" class="java.lang.Integer"/>
<field name="bewertungsArtTypNameKurz" class="java.lang.String"/>
<field name="refbereich" class="java.lang.String"/>
<field name="refbereichVorjahres" class="java.lang.String"/>
<field name="KN_GGAlleinstehend" class="java.lang.String"/>
<field name="erlaueterungDerRechregeln" class="java.lang.String"/>
<field name="teildatensatzbezug" class="java.lang.String"/>
<field name="mindesanzahlZaeler" class="java.lang.Integer"/>
<field name="mindesanzahlNenner" class="java.lang.Integer"/>
<field name="KN_FormelZ" class="java.lang.String"/>
<field name="KN_FormelGG" class="java.lang.String"/>
<field name="verwendeteFunktionen" class="java.lang.String"/>
<field name="idLb" class="java.lang.String"/>
<field name="LB_LangBezeichnung" class="java.lang.String"/>
<field name="LB_ID" class="java.lang.Integer"/>
<field name="nameAlleinstehend" class="java.lang.String"/>
<field name="KN_BezeichnungAlleinstehendKurz" class="java.lang.String"/>
<field name="QI_ID" class="java.lang.Integer"/>
<field name="IMG_ID" class="java.lang.Integer"/>
<field name="Name" class="java.lang.String"/>
<field name="Image" class="java.lang.Object"/>
<group name="id" isStartNewPage="true">
<groupExpression><![CDATA[$F{KN_Id}]]></groupExpression>
<groupHeader>
<band height="44"/>
</groupHeader>
<groupFooter>
<band height="50"/>
</groupFooter>
</group>
<background>
<band splitType="Stretch"/>
</background>
<title>
<band height="44" splitType="Stretch"/>
</title>
<pageHeader>
<band height="35" splitType="Stretch"/>
</pageHeader>
<columnHeader>
<band height="34" splitType="Stretch"/>
</columnHeader>
<detail>
<band height="149" splitType="Stretch">
<componentElement>
<reportElement x="170" y="20" width="350" height="100" uuid="38d917fb-dfc2-4c08-890a-09cfe6e2214d">
<property name="com.jaspersoft.studio.layout" value="com.jaspersoft.studio.editor.layout.VerticalRowLayout"/>
<property name="com.jaspersoft.studio.table.style.table_header" value="Table_TH"/>
<property name="com.jaspersoft.studio.table.style.column_header" value="Table_CH"/>
<property name="com.jaspersoft.studio.table.style.detail" value="Table_TD"/>
<property name="net.sf.jasperreports.export.headertoolbar.table.name" value=""/>
<property name="com.jaspersoft.studio.components.autoresize.proportional" value="true"/>
</reportElement>
<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" whenNoDataType="AllSectionsNoDetail">
<datasetRun subDataset="Dataset1" uuid="1b3548f6-7d6b-4070-bb8e-aaefbabdc7c9">
<datasetParameter name="gg">
<datasetParameterExpression><![CDATA[$F{KN_FormelGG}]]></datasetParameterExpression>
</datasetParameter>
</datasetRun>
<jr:column width="70" uuid="048812d7-0ed1-4db8-a09a-e6242f77c6ce">
<property name="com.jaspersoft.studio.components.table.model.column.name" value="Column1"/>
<jr:tableHeader style="Table_TH" height="30" rowSpan="1"/>
<jr:detailCell style="Table_TD" height="30">
<textField>
<reportElement x="0" y="0" width="70" height="30" uuid="c5aaea84-1367-41df-be8d-7f71e3ea5153"/>
<textFieldExpression><![CDATA[$F{item}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
<jr:column width="70" uuid="11b85ada-c9fe-42b6-a646-8bd1697cdec2">
<property name="com.jaspersoft.studio.components.table.model.column.name" value="Column2"/>
<jr:tableHeader style="Table_TH" height="30" rowSpan="1"/>
<jr:detailCell style="Table_TD" height="30">
<textField>
<reportElement x="0" y="0" width="70" height="30" uuid="728ff44d-1dbd-404c-b8b3-7cc0e1f07f60"/>
<textFieldExpression><![CDATA[$F{fieldName}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
<jr:column width="70" uuid="892f30cb-fb41-444f-889b-1e005484c35e">
<property name="com.jaspersoft.studio.components.table.model.column.name" value="Column3"/>
<jr:tableHeader style="Table_TH" height="30" rowSpan="1"/>
<jr:detailCell style="Table_TD" height="30">
<textField>
<reportElement x="0" y="0" width="70" height="30" uuid="e38ac951-71bc-45a6-8ed2-313805a77050"/>
<textFieldExpression><![CDATA[$F{keyFormel}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
<jr:column width="70" uuid="7d0d700a-5a75-4c26-94c0-9ef7c53bd719">
<property name="com.jaspersoft.studio.components.table.model.column.name" value="Column4"/>
<jr:tableHeader style="Table_TH" height="30" rowSpan="1">
<textField>
<reportElement x="0" y="0" width="70" height="30" uuid="68577007-0344-406c-8aa2-3127d1da1c65"/>
</textField>
</jr:tableHeader>
<jr:detailCell style="Table_TD" height="30">
<textField>
<reportElement x="0" y="0" width="70" height="30" uuid="873d63c1-1b91-4441-b7bd-f67db7729e7f"/>
<textFieldExpression><![CDATA[$F{mK}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
<jr:column width="70" uuid="cf5a1a2f-594d-429f-8925-62d001e1dd00">
<property name="com.jaspersoft.studio.components.table.model.column.name" value="Column5"/>
<jr:tableHeader style="Table_TH" height="30" rowSpan="1">
<textField>
<reportElement x="0" y="0" width="70" height="30" uuid="7fb46eb8-d0e1-44ab-89f9-ec31d49b8109"/>
<textFieldExpression><![CDATA[$P{gg}]]></textFieldExpression>
</textField>
</jr:tableHeader>
<jr:detailCell style="Table_TD" height="30"/>
</jr:column>
</jr:table>
</componentElement>
<textField>
<reportElement x="20" y="80" width="100" height="30" uuid="b89cd04c-2569-43ef-9730-445b874855dd"/>
<textFieldExpression><![CDATA[$F{KN_FormelGG}]]></textFieldExpression>
</textField>
<staticText>
<reportElement x="20" y="32" width="100" height="30" uuid="e91b4461-5e53-4f85-8992-14e69a1aa05f"/>
<text><![CDATA[KN_FormelGG]]></text>
</staticText>
</band>
</detail>
<columnFooter>
<band height="45" splitType="Stretch"/>
</columnFooter>
<pageFooter>
<band height="54" splitType="Stretch"/>
</pageFooter>
<summary>
<band height="42" splitType="Stretch"/>
</summary>
</jasperReport>
解决方案
My goal is to get a field value from the main report and manipulate its value, then fill the beans with these values and at last fill the table with the beans.
I will ignore all your scriplets and other code and show you the simplest way to create a dynamic datasource for another component using a current field, variable or parameter value.
As example we will have these String values in field1 (row1, row2)
Test1_1.23:Test2_4.32:Test3_1.08
Test1_2.12:Test2_5.12:Test3_2.13
We want to split on : and create rows (List of beans), then split on _ to create columns (properties on bean) and display this in a jr:table component.
java code (or Bean)
public class TableCellsBean {
private String name;
private double value;
public TableCellsBean(String name,double value){
this.name = name;
this.value = value;
}
public static JRBeanCollectionDataSource getDatasource(String fieldValue){
List<TableCellsBean> retList = new ArrayList<>();
String[] values = fieldValue.split(":");
for (String v : values) {
String[] sp = v.split("_");
retList.add(new TableCellsBean(sp[0], Double.parseDouble(sp[1])));
}
return new JRBeanCollectionDataSource(retList);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getValue() {
return value;
}
public void setValue(double value) {
this.value = value;
}
}
As you can see already inside this bean class I have added a static method that returns a JRBeanCollectionDataSource depending on value passed as parameter.
Basically you pass a fieldValue to this method, it does some logic, creates the TableCellBean, adds them to list and return a JRBeanCollectionDataSource
Note: The method does not need to be static nor inside this class, furthermore exception handling is not considered.
Report - the jrxml
In example we will have field1 containing Test1_1.23:Test2_4.32:Test3_1.08 on row 1 and Test1_2.12:Test2_5.12:Test3_2.13 on row 2.
We define a subdataset that represents out TableCellsBean
<subDataset name="table_dataset" uuid="4dc1b0fb-2588-4f98-8c8d-f0afefbb2fd1">
<field name="name" class="java.lang.String"/>
<field name="value" class="java.lang.Double"/>
</subDataset>
as datasource we call our static method passing the field1 content in current row.
<dataSourceExpression><![CDATA[my.package.TableCellsBean.getDatasource($F{field1})]]></dataSourceExpression>
Full 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="test" language="java" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="886a547e-11bd-434b-a330-d93ee5e4a280">
<style name="table">
<box>
<pen lineWidth="1.0" lineColor="#000000"/>
</box>
</style>
<style name="table_TH" mode="Opaque" backcolor="#F0F8FF">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="table_CH" mode="Opaque" backcolor="#BFE1FF">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="table_TD" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<subDataset name="table_dataset" uuid="4dc1b0fb-2588-4f98-8c8d-f0afefbb2fd1">
<field name="name" class="java.lang.String"/>
<field name="value" class="java.lang.Double"/>
</subDataset>
<field name="field1" class="java.lang.String">
<fieldDescription><![CDATA[_THIS]]></fieldDescription>
</field>
<detail>
<band height="40" splitType="Stretch">
<textField>
<reportElement x="0" y="0" width="555" height="20" uuid="a73343b1-ccb2-4a59-b882-381b98efd664"/>
<textElement verticalAlignment="Middle"/>
<textFieldExpression><![CDATA[$F{field1}]]></textFieldExpression>
</textField>
<componentElement>
<reportElement key="table" style="table" x="0" y="20" width="555" height="20" uuid="09a9a5b8-499b-40d2-b391-ece25772a31e"/>
<jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">
<datasetRun subDataset="table_dataset" uuid="05601bdb-5579-4253-90f7-6742739d9714">
<dataSourceExpression><![CDATA[bounty.TableCellsBean.getDatasource($F{field1})]]></dataSourceExpression>
</datasetRun>
<jr:column width="90" uuid="afbbb3d0-573a-495d-ab51-0ae4d601e6fb">
<jr:tableHeader style="table_TH" height="20" rowSpan="1">
<staticText>
<reportElement x="0" y="0" width="90" height="20" uuid="e476f026-bbec-4b19-9bd4-f4b21f3377ef"/>
<textElement textAlignment="Center" verticalAlignment="Middle"/>
<text><![CDATA[Name]]></text>
</staticText>
</jr:tableHeader>
<jr:detailCell style="table_TD" height="20" rowSpan="1">
<textField>
<reportElement x="0" y="0" width="90" height="20" uuid="49cac181-b16b-4ab3-b600-78a56fb0f42b"/>
<box leftPadding="3" rightPadding="3"/>
<textElement verticalAlignment="Middle"/>
<textFieldExpression><![CDATA[$F{name}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
<jr:column width="90" uuid="4a1b0759-c347-4294-82c5-3aed4762f0c4">
<jr:tableHeader style="table_TH" height="20" rowSpan="1">
<staticText>
<reportElement x="0" y="0" width="90" height="20" uuid="bfa965b5-b5a4-484d-bfbd-d8bc753718b1"/>
<textElement textAlignment="Center" verticalAlignment="Middle"/>
<text><![CDATA[Value]]></text>
</staticText>
</jr:tableHeader>
<jr:detailCell style="table_TD" height="20" rowSpan="1">
<textField>
<reportElement x="0" y="0" width="90" height="20" uuid="925192bc-a761-48f5-bad5-097d15587198"/>
<box leftPadding="3" rightPadding="3"/>
<textElement textAlignment="Right" verticalAlignment="Middle"/>
<textFieldExpression><![CDATA[$F{value}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
</jr:table>
</componentElement>
</band>
</detail>
</jasperReport>
Test the example
Adding main method to export to pdf
public static void main(String[] args) throws JRException {
//Compile report
JasperReport report = JasperCompileManager.compileReport("myJasperReport.jrxml");
//Setting up some arbitrary data to test the auto creation of datasource
List<String> someData = new ArrayList<>();
someData.add("Test1_1.23:Test2_4.32:Test3_1.08");
someData.add("Test1_2.12:Test2_5.12:Test3_2.13");
//Fill report
JasperPrint jasperPrint = JasperFillManager.fillReport(report, new HashMap<>(),new JRBeanCollectionDataSource(someData));
//Export to pdf
JRPdfExporter exporter = new JRPdfExporter();
exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
exporter.setExporterOutput(new SimpleOutputStreamExporterOutput("myJasperReport.pdf"));
SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration();
exporter.setConfiguration(configuration);
exporter.exportReport();
}
Output
Conclusion
The simplest way to provide components with custom datasource depending on running reports values (fields, variables, parameter), is to create a method that generates the datasource and call this in dataSourceExpression
这篇关于在jaspersoft studio中使用多个数据源的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
