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jasper-reports - 如何删除带有空文本字段的框架？

转载 作者：行者123 更新时间：2023-12-04 04:27:36 28 4
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我有一个框架，我正在使用该框架来显示性别字段。我在该框架中添加了两个 textfields，一个用于显示性别标签，另一个用于显示性别字段值。当性别字段为空时，Jasper 正在呈现空行，我想删除此空行。

<frame>
            <reportElement key="govi" positionType="Float" stretchType="RelativeToTallestObject" x="124" y="154" width="403" height="17" isRemoveLineWhenBlank="true" isPrintWhenDetailOverflows="true" uuid="ff3e33f8-cc51-45c3-a3ed-513832d6e180"/>
            <staticText>
                <reportElement x="0" y="0" width="141" height="15" uuid="9700c67a-9385-4dd5-8626-23a8261bc2b5"/>
                <text><![CDATA[Person with Disability ]]></text>
            </staticText>
            <textField isStretchWithOverflow="true">
                <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="140" y="0" width="245" height="15" isPrintWhenDetailOverflows="true" uuid="69f221ef-ae6b-40c6-98fd-dec7b91a6269"/>
                <textElement textAlignment="Justified">
                    <font size="12" isBold="false"/>
                </textElement>
                <textFieldExpression><![CDATA[($F{is_pd} ? "Yes" : "No")]]></textFieldExpression>
            </textField>
        </frame>
        <frame>
            <reportElement key="genderField" positionType="Float" stretchType="RelativeToTallestObject" x="124" y="114" width="393" height="15" isPrintWhenDetailOverflows="true" uuid="464b5c89-e158-4783-8f21-7b05f567e55e"/>
            <textField isStretchWithOverflow="true" isBlankWhenNull="true">
                <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="0" y="0" width="104" height="15" isRemoveLineWhenBlank="true" uuid="0a77a60f-19ef-4634-84df-7a7f7f94ed14"/>
                <textElement>
                    <font size="10" isBold="false"/>
                </textElement>
                <textFieldExpression><![CDATA[($F{country_id} != 1 ? "Gender" : null )]]></textFieldExpression>
            </textField>
            <textField isStretchWithOverflow="true" isBlankWhenNull="true">
                <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="140" y="0" width="231" height="15" isRemoveLineWhenBlank="true" uuid="884fe0ef-654c-46e0-8399-d9fed8722a76"/>
                <textElement>
                    <font size="12" isBold="false"/>
                </textElement>
                <textFieldExpression><![CDATA[($F{country_id} != 1 ? $F{gender} : null )]]></textFieldExpression>
            </textField>
        </frame>
        <frame>
            <reportElement key="govi" positionType="Float" stretchType="RelativeToTallestObject" x="124" y="134" width="402" height="17" isRemoveLineWhenBlank="true" isPrintWhenDetailOverflows="true" uuid="a4cbd87c-ea2d-4952-8bc4-0a7e6e655e28"/>
            <staticText>
                <reportElement x="0" y="0" width="69" height="15" uuid="e289c5be-91c4-4a74-b3d6-57c800401d0a"/>
                <text><![CDATA[Category]]></text>
            </staticText>
            <textField isStretchWithOverflow="true">
                <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="140" y="0" width="231" height="15" isRemoveLineWhenBlank="true" uuid="c01465ce-fb3d-47ba-9c29-bdfd7be7424f"/>
                <textElement>
                    <font size="12" isBold="false"/>
                </textElement>
                <textFieldExpression><![CDATA[($F{category_id} == 1 ? "GEN" : ($F{category_id} == 2 ? "OBC" : ($F{category_id}==3 ? "SC" : "ST")))]]></textFieldExpression>
            </textField>
        </frame>

我在框架和两个文本字段上应用了 isRemoveLineWhenBlank="true"，在两个文本字段上应用了 isBlankWhenNull="true" 仍然没有成功。我错过了什么吗？

最佳答案

解决您的问题很简单 - 您应该为第一个 textField 设置 isRemoveLineWhenBlank="true"(使用 ($F{country_id} != 1 ? "Gender": null epxression). 在这种情况下一切都会好起来的。

<textField isStretchWithOverflow="true" isBlankWhenNull="true">
    <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="0" y="0" width="104" height="15" isRemoveLineWhenBlank="true"/>
    <textElement>
        <font size="10" isBold="false"/>
    </textElement>
    <textFieldExpression><![CDATA[($f{country_id} != 1 ? "Gender" : null )]]></textFieldExpression>
</textField>

我修改了你的模板以检查为

<?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="Hide frame" pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
    <parameter name="country_id" class="java.lang.Integer"/>
    <parameter name="gender" class="java.lang.String"/>
    <title>
        <band height="742">
            <textField>
                <reportElement positionType="Float" x="0" y="30" width="430" height="15" />
                <textFieldExpression><![CDATA["First line"]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement positionType="Float" x="0" y="60" width="430" height="15" />
                <textFieldExpression><![CDATA["Third line"]]></textFieldExpression>
            </textField>
            <frame>
                <reportElement key="genderField" positionType="Float" stretchType="RelativeToTallestObject" x="0" y="45" width="393" height="15" isRemoveLineWhenBlank="true" isPrintWhenDetailOverflows="true" />
                <textField isStretchWithOverflow="true" isBlankWhenNull="true">
                    <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="0" y="0" width="104" height="15" isRemoveLineWhenBlank="true" />
                    <textElement>
                        <font size="10" isBold="false"/>
                    </textElement>
                    <textFieldExpression><![CDATA[($P{country_id} != 1 ? "Gender" : null )]]></textFieldExpression>
                </textField>
                <textField isStretchWithOverflow="true" isBlankWhenNull="true">
                    <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="140" y="0" width="231" height="15" isRemoveLineWhenBlank="true" />
                    <textElement>
                        <font size="12" isBold="false"/>
                    </textElement>
                    <textFieldExpression><![CDATA[($P{country_id} != 1 ? $P{gender} : null )]]></textFieldExpression>
                </textField>
            </frame>
        </band>
    </title>
</jasperReport>

它就像一个魅力:

The result in preview mode in JSS

例如，您可以使用以下参数组合得到上面的结果:

  • country_id=1
  • gender="M"

如果使用这个值:

  • country_id=3
  • gender="F"

结果将是:

Case of 3 rows

您也可以像这个例子一样简化这个片段:

<?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="Hide frame" pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
    <parameter name="country_id" class="java.lang.Integer"/>
    <parameter name="gender" class="java.lang.String"/>
    <title>
        <band height="742">
            <textField>
                <reportElement positionType="Float" x="0" y="30" width="430" height="15" />
                <textFieldExpression><![CDATA["First line"]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement positionType="Float" x="0" y="60" width="430" height="15" />
                <textFieldExpression><![CDATA["Third line"]]></textFieldExpression>
            </textField>
            <frame>
                <reportElement positionType="Float" x="0" y="45" width="430" height="15" isRemoveLineWhenBlank="true" >
                    <printWhenExpression><![CDATA[$P{country_id} != 1 && $P{gender} != null]]></printWhenExpression>
                </reportElement>
                <textField isBlankWhenNull="true">
                    <reportElement x="0" y="0" width="100" height="15" />
                    <textFieldExpression><![CDATA[$P{country_id} != 1 ? "Gender" : null]]></textFieldExpression>
                </textField>
                <textField isBlankWhenNull="true">
                    <reportElement x="100" y="0" width="100" height="15" />
                    <textFieldExpression><![CDATA[$P{country_id} != 1 ? $P{gender} : null]]></textFieldExpression>
                </textField>
            </frame>
        </band>
    </title>
</jasperReport>

在此示例中，isRemoveLineWhenBlank 和 printWhenExpression 仅用于框架元素。

它和这个例子一样工作:

<?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="Hide frame" pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
    <parameter name="country_id" class="java.lang.Integer"/>
    <parameter name="gender" class="java.lang.String"/>
    <title>
        <band height="742">
            <textField>
                <reportElement positionType="Float" x="0" y="30" width="430" height="15"/>
                <textFieldExpression><![CDATA["First line"]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement positionType="Float" x="0" y="60" width="430" height="15"/>
                <textFieldExpression><![CDATA["Third line"]]></textFieldExpression>
            </textField>
            <frame>
                <reportElement positionType="Float" x="0" y="45" width="430" height="15" isRemoveLineWhenBlank="true"/>
                <textField isBlankWhenNull="true">
                    <reportElement x="0" y="0" width="100" height="15" isRemoveLineWhenBlank="true"/>
                    <textFieldExpression><![CDATA[$P{country_id} != 1 ? "Gender" : null]]></textFieldExpression>
                </textField>
                <textField isBlankWhenNull="true">
                    <reportElement x="100" y="0" width="100" height="15" isRemoveLineWhenBlank="true"/>
                    <textFieldExpression><![CDATA[$P{country_id} != 1 ? $P{gender} : null]]></textFieldExpression>
                </textField>
            </frame>
        </band>
    </title>
</jasperReport>

结果将是相同的，例如在 country_id == 1 的情况下:

The result in preview mode in JSS

更新

您忘记在新代码段中为带有性别的框架设置 isRemoveLineWhenBlank="true"。进行此修复后，您的新示例在 iReport 5.6.0 中也能正常运行。为了测试目的，我用参数替换了字段，并更改了帧的顺序以隐藏带有性别的帧。

jrxml 文件:

<?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="Hide frame" pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
    <parameter name="country_id" class="java.lang.Integer"/>
    <parameter name="gender" class="java.lang.String"/>
    <parameter name="is_pd" class="java.lang.Boolean">
        <defaultValueExpression><![CDATA[true]]></defaultValueExpression>
    </parameter>
    <parameter name="category_id" class="java.lang.Integer">
        <defaultValueExpression><![CDATA[1]]></defaultValueExpression>
    </parameter>
    <title>
        <band height="742">
            <frame>
                <reportElement key="govi" positionType="Float" stretchType="RelativeToTallestObject" x="124" y="129" width="403" height="17" isRemoveLineWhenBlank="true" isPrintWhenDetailOverflows="true"/>
                <staticText>
                    <reportElement x="0" y="0" width="141" height="15"/>
                    <text><![CDATA[Person with Disability ]]></text>
                </staticText>
                <textField isStretchWithOverflow="true">
                    <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="140" y="0" width="245" height="15" isPrintWhenDetailOverflows="true"/>
                    <textElement textAlignment="Justified">
                        <font size="12" isBold="false"/>
                    </textElement>
                    <textFieldExpression><![CDATA[$P{is_pd} ? "Yes" : "No"]]></textFieldExpression>
                </textField>
            </frame>
            <frame>
                <reportElement key="genderField" positionType="Float" stretchType="RelativeToTallestObject" x="124" y="114" width="393" height="15" isRemoveLineWhenBlank="true" isPrintWhenDetailOverflows="true"/>
                <textField isStretchWithOverflow="true" isBlankWhenNull="true">
                    <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="0" y="0" width="104" height="15" isRemoveLineWhenBlank="true"/>
                    <textElement>
                        <font size="10" isBold="false"/>
                    </textElement>
                    <textFieldExpression><![CDATA[($P{country_id} != 1 ? "Gender" : null )]]></textFieldExpression>
                </textField>
                <textField isStretchWithOverflow="true" isBlankWhenNull="true">
                    <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="140" y="0" width="231" height="15" isRemoveLineWhenBlank="true"/>
                    <textElement>
                        <font size="12" isBold="false"/>
                    </textElement>
                    <textFieldExpression><![CDATA[($P{country_id} != 1 ? $P{gender} : null )]]></textFieldExpression>
                </textField>
            </frame>
            <frame>
                <reportElement key="govi" positionType="Float" stretchType="RelativeToTallestObject" x="124" y="97" width="402" height="17" isRemoveLineWhenBlank="true" isPrintWhenDetailOverflows="true"/>
                <staticText>
                    <reportElement x="0" y="0" width="69" height="15"/>
                    <text><![CDATA[Category]]></text>
                </staticText>
                <textField isStretchWithOverflow="true">
                    <reportElement positionType="Float" stretchType="RelativeToTallestObject" x="140" y="0" width="231" height="15" isRemoveLineWhenBlank="true"/>
                    <textElement>
                        <font size="12" isBold="false"/>
                    </textElement>
                    <textFieldExpression><![CDATA[($P{category_id} == 1 ? "GEN" : ($P{category_id} == 2 ? "OBC" : ($P{category_id}==3 ? "SC" : "ST")))]]></textFieldExpression>
                </textField>
            </frame>
        </band>
    </title>
</jasperReport>

iReport 中的设计如下所示:

Design in iReport

我这样设置参数:

  • country_id = 1
  • 性别 - 空
  • is_pd - 默认值(= true)
  • category_id - 默认值 (=1)

此参数生成的报告如下所示:

Preview in iReport

如果使用这个集合

  • country_id = 2
  • 性别 = "M"
  • is_pd - 默认值(= true)
  • category_id - 默认值 (=1)

结果将是:

Preview in iReport

关于jasper-reports - 如何删除带有空文本字段的框架？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41178070/

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