我的报告遇到问题,因此我创建了一个简单的示例来查找问题。
SimpleRep.jrxml:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.8.0.final using JasperReports Library version 6.8.0-2ed8dfabb690ff337a5797129f2cd92902b0c87b -->
<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="StackOverflowExample" pageWidth="555" pageHeight="802" columnWidth="555" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="749cd048-9a0d-4a00-89bf-1a75a4565943">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="Sample DB"/>
<property name="com.jaspersoft.studio.data.sql.tables" value=""/>
<queryString>
<![CDATA[SELECT "ORDERS"."SHIPCOUNTRY",
Max("ORDERS"."SHIPCOUNTRY")
FROM "ORDERS"
GROUP BY "ORDERS"."SHIPCOUNTRY"
ORDER BY "ORDERS"."SHIPCOUNTRY" ASC]]>
</queryString>
<field name="SHIPCOUNTRY" class="java.lang.String">
<property name="com.jaspersoft.studio.field.label" value="SHIPCOUNTRY"/>
<property name="com.jaspersoft.studio.field.tree.path" value="ORDERS"/>
</field>
<field name="C2" class="java.lang.String">
<property name="com.jaspersoft.studio.field.label" value="C2"/>
</field>
<detail>
<band height="223">
<subreport>
<reportElement x="0" y="50" width="555" height="173" uuid="ed633d08-0959-42bf-a95f-fc66f35b1323"/>
<subreportParameter name="country">
<subreportParameterExpression><![CDATA[$F{SHIPCOUNTRY}]]></subreportParameterExpression>
</subreportParameter>
<connectionExpression><![CDATA[$P{REPORT_CONNECTION}]]></connectionExpression>
<subreportExpression><![CDATA["SimpleSubRep.jasper"]]></subreportExpression>
</subreport>
<textField>
<reportElement x="0" y="0" width="555" height="45" uuid="dc687557-e2f4-4c62-b9ae-bc92dbd62130"/>
<textElement>
<font size="29"/>
</textElement>
<textFieldExpression><![CDATA[$F{SHIPCOUNTRY}]]></textFieldExpression>
</textField>
</band>
</detail>
</jasperReport>
SimpleSubRep.jrxml:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.8.0.final using JasperReports Library version 6.8.0-2ed8dfabb690ff337a5797129f2cd92902b0c87b -->
<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="SimpleSubRep" columnCount="2" printOrder="Horizontal" pageWidth="555" pageHeight="802" columnWidth="277" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="ddf05f60-d7c2-4c97-85ea-59b36ddd5382">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="Sample DB"/>
<property name="com.jaspersoft.studio.data.sql.tables" value=""/>
<parameter name="country" class="java.lang.String"/>
<queryString>
<![CDATA[SELECT "ORDERS"."ORDERID"
FROM "ORDERS"
WHERE "ORDERS"."SHIPCOUNTRY" = $P{country}]]>
</queryString>
<field name="ORDERID" class="java.lang.Integer">
<property name="com.jaspersoft.studio.field.label" value="ORDERID"/>
<property name="com.jaspersoft.studio.field.tree.path" value="ORDERS"/>
</field>
<detail>
<band height="40" splitType="Stretch">
<textField>
<reportElement x="0" y="0" width="277" height="40" uuid="a64ae352-8c74-4c2f-95f0-9d2c913244a1">
<property name="com.jaspersoft.studio.unit.width" value="px"/>
</reportElement>
<textElement>
<font size="22"/>
</textElement>
<textFieldExpression><![CDATA[$F{ORDERID}]]></textFieldExpression>
</textField>
</band>
</detail>
<summary>
<band height="1">
<break>
<reportElement x="0" y="0" width="100" height="1" uuid="8d9d1fb6-1c60-4cdb-acca-9af0b65c3c23"/>
</break>
</band>
</summary>
</jasperReport>
在此示例中,我正在使用JasperStudio 示例数据库。
我所拥有的是一份报告,该报告将搜索ORDER表的每个国家/地区,并打印所有订单的ID来自那个国家。
我做了一些屏幕截图:
http://www.zupimages.net/viewer.php?id=19/30/24r2.png
它可以正常工作,但是如果我的主报告有一个摘要带,则报告末尾会出现一个空白页,如果删除摘要带,该空白页就会消失。
这很可能是由子报表末尾的 break元素引起的。
-如果什么也没剩下,最后一个break元素将被删除
-但是我有一个摘要栏,即使摘要栏为空,它也会打印 break元素
任何想法,如果有摘要带,如何删除最后一个空白页?任何技巧或窍门,(虽然我很难使用变量,但似乎找不到解决方法)。