子报表中带有“溢出溢出”的文本字段可以跨多个页面吗？

Question

我有一个只有一个文本字段的子报表。此文本字段可以包含从服务中检索到的大约 5000 个字符。

我的目标是在父报表上显示此子报表。它应该从我将它以连续方式放置到多个页面的“浮动”位置开始。

当我的父报表中有此子报表时，文本剪辑当子报表中的文本字段的“溢出溢出”设置为 false。 当我将 "Stretch with overflow" 设置为 true 时，页面上的 文本字段显示为空白，但会占用父报表上所需的空间。

我尝试了以下方法，但似乎没有任何效果：

1.在子报告中：

• 当细节溢出 = true 时打印
• 拆分类型 = “拉伸”
• 忽略分页 = true

2。主要报告：

• 拆分类型 = “拉伸”
• 当子报表对象的细节溢出 = true 时打印
• 在第一个全波段打印 = true

几天以来的尝试让我觉得不可能有跨页的文本字段溢出。

请让我知道是否有可能有一个包含跨多个页面的文本字段的子报表。

Answer 1

“甚至可以让一个带有文本字段的子报表跨越多个页面？”

是的，我在下面附上一个例子

主要报告

<?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="stretchTest" pageWidth="842" pageHeight="595" orientation="Landscape" whenNoDataType="BlankPage" columnWidth="802" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="6c8cebac-a7b5-4dc2-abe8-e36b0cb184ca">
    <parameter name="SUBREPORT_DIR" class="java.lang.String" isForPrompting="false">
        <defaultValueExpression><![CDATA["C:\\jdd\\projects\\StackTrace\\jasper\\"]]></defaultValueExpression>
    </parameter>
    <detail>
        <band height="20" splitType="Stretch">
            <subreport>
                <reportElement x="0" y="0" width="100" height="20" uuid="778b107f-288e-4f17-915d-fed6f83a2805"/>
                <dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.JREmptyDataSource(2)]]></dataSourceExpression>
                <subreportExpression><![CDATA[$P{SUBREPORT_DIR} + "stretchTest_subreport.jasper"]]></subreportExpression>
            </subreport>
        </band>
    </detail>
</jasperReport>

子报告

<?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="stretchTest_subreport" pageWidth="100" pageHeight="555" orientation="Landscape" columnWidth="100" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="f716e850-ab6f-4668-b3a1-afe4823b8abf">
    <property name="ireport.zoom" value="1.0"/>
    <property name="ireport.x" value="0"/>
    <property name="ireport.y" value="0"/>
    <parameter name="veryLongTextThatNeedToBreak" class="java.lang.String" isForPrompting="false">
        <defaultValueExpression><![CDATA["I have a subreport with just one text field. This text field can have somewhere around 5000 characters retrieved from a service. My goal is to show this subreport on the parent report.(it should start from the Float position where I place it to multiple pages in a continuous manner). When I have this subreport in my parent report, the text clips when the Stretch with overflow of the text field in subreport is set to false. When I set Stretch with overflow to true, the text field appears blank on the pages but takes up the required space on the parent report. I have tried the following but nothing seem to work:1. In the sub report: Set the Print when detail overflow = true Set Split Type = Stretch Ignore pagination = true 2. Main report: Set Split Type = Stretch Set Print when detail overflow = true of subreport object Print in first whole band = true Trying it since few days has made me feel that it is impossible to have a overflowing text field across pages. Please let me know if its even possible to have a subreport with text field to span across multiple pages. Thanks in advance!!"]]></defaultValueExpression>
    </parameter>
    <detail>
        <band height="20" splitType="Stretch">
            <textField isStretchWithOverflow="true">
                <reportElement x="0" y="0" width="100" height="20" uuid="4f14a231-dd62-465b-b10a-fa39f9c6a297"/>
                <textFieldExpression><![CDATA[$P{veryLongTextThatNeedToBreak}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
</jasperReport>

编译子报表，设置正确的子报表路径并测试你自己。

注意：我没有在reportElements 上设置很多属性。

输出