Jasper reports 有没有可能在引擎的帮助下进行自定义排序(不是升序或降序)?
我有一个要排序的数据,但它应该是由我的规则定义的自定义排序 例如,我需要按以下顺序打印值:Jasper reports 有没有可能在引擎的帮助下进行自定义排序(不是升序或降序)?,jasper-reports,Jasper Reports,我有一个要排序的数据,但它应该是由我的规则定义的自定义排序 例如,我需要按以下顺序打印值: B C A D 它不是升序或降序排序 可以这样做吗?首先,可以通过JasperReports引擎进行排序(无需查询语言的帮助,例如SQL) 这可以借助主数据集或子数据集的sortField属性来完成 未经排序的报表样本 不带排序的报表的jrxml: <?xml version="1.0" encoding="UTF-8"?> <jasperRe
B
C
A
D
它不是升序或降序排序
可以这样做吗?首先,可以通过JasperReports引擎进行排序(无需查询语言的帮助,例如SQL) 这可以借助主数据集或子数据集的sortField属性来完成 未经排序的报表样本 不带排序的报表的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="Non sorted data" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<subDataset name="ds">
<field name="value" class="java.lang.String">
<fieldDescription><![CDATA[_THIS]]></fieldDescription>
</field>
</subDataset>
<summary>
<band height="15">
<componentElement>
<reportElement x="0" y="0" width="311" height="15"/>
<jr:list xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd" printOrder="Vertical">
<datasetRun subDataset="ds">
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource(Arrays.asList("def", "jkl", "abc", "ghi"))]]></dataSourceExpression>
</datasetRun>
<jr:listContents height="15" width="311">
<textField>
<reportElement x="0" y="0" width="311" height="15"/>
<textFieldExpression><![CDATA[$F{value}]]></textFieldExpression>
</textField>
</jr:listContents>
</jr:list>
</componentElement>
</band>
</summary>
</jasperReport>
3.自定义数据源
使用自定义数据源是对数据进行排序的另一种方法。我们可以用Java代码对数据进行排序,然后将数据源传递给报表
4.使用交叉表
交叉表组件正在使用排序数据的机制-我们可以设置排序的自定义行为。正如我在前面的评论中提到的,您可以使用
sortField
ok done!知道了。将要排序的字段作为变量。添加条件。然后将其添加到排序字段中。谢谢你能给我写个答案吗?否则请删除该问题。不回答也无济于事。
<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="Sorted data" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<subDataset name="ds">
<field name="value" class="java.lang.String">
<fieldDescription><![CDATA[_THIS]]></fieldDescription>
</field>
<sortField name="value"/>
</subDataset>
<summary>
<band height="15">
<componentElement>
<reportElement x="0" y="0" width="311" height="15"/>
<jr:list xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd" printOrder="Vertical">
<datasetRun subDataset="ds">
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource(Arrays.asList("def", "jkl", "abc", "ghi"))]]></dataSourceExpression>
</datasetRun>
<jr:listContents height="15" width="311">
<textField>
<reportElement x="0" y="0" width="311" height="15"/>
<textFieldExpression><![CDATA[$F{value}]]></textFieldExpression>
</textField>
</jr:listContents>
</jr:list>
</componentElement>
</band>
</summary>
</jasperReport>
<?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="Data with custom sorting" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<subDataset name="ds">
<field name="value" class="java.lang.String">
<fieldDescription><![CDATA[_THIS]]></fieldDescription>
</field>
<sortField name="valueForSorting" type="Variable"/>
<variable name="valueForSorting" class="java.lang.Integer">
<variableExpression><![CDATA["a".equalsIgnoreCase($F{value}) ? 3 : "b".equalsIgnoreCase($F{value}) ? 1 : "c".equalsIgnoreCase($F{value}) ? 2 : "d".equalsIgnoreCase($F{value}) ? 4 : 0]]></variableExpression>
</variable>
</subDataset>
<summary>
<band height="15">
<componentElement>
<reportElement x="0" y="0" width="311" height="15"/>
<jr:list xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd" printOrder="Vertical">
<datasetRun subDataset="ds">
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource(Arrays.asList("d", "c", "b", "a"))]]></dataSourceExpression>
</datasetRun>
<jr:listContents height="15" width="311">
<textField>
<reportElement x="0" y="0" width="311" height="15"/>
<textFieldExpression><![CDATA[$F{value}]]></textFieldExpression>
</textField>
</jr:listContents>
</jr:list>
</componentElement>
</band>
</summary>
</jasperReport>
SELECT value,
CASE
WHEN value = 'a' THEN 3
WHEN value = 'b' THEN 1
WHEN value = 'c' THEN 2
WHEN value = 'd' THEN 4
ELSE 0
END AS valueForSorting
FROM someTable