iReport: How to hide line with text fields without data line contains different kind of data

问题

I have null textfields (it contains string or bigdecimal value) put on single line pulled for my report which display a blank line.

In order to remove the blank line that has null rows I used the property isRemoveLineWhenBlank for the report elements in that line. But that does not work.

Can someone help me with this please?

snap: enter image description here

output snap: enter image description here

jrxml :

<?xml version="1.0" encoding="UTF-8"  ?>
<!-- Created with iReport - A designer for JasperReports -->
<!DOCTYPE jasperReport PUBLIC "//JasperReports//DTD Report Design//EN" "http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">
<jasperReport
         name="WEB_PREVIEW"
         columnCount="1"
         printOrder="Horizontal"
         orientation="Portrait"
         pageWidth="595"
         pageHeight="900"
         columnWidth="535"
         columnSpacing="0"
         leftMargin="30"
         rightMargin="30"
         topMargin="20"
         bottomMargin="20"
         whenNoDataType="NoPages"
         isTitleNewPage="false"
         isSummaryNewPage="false">
    <property name="ireport.scriptlethandling" value="0" />
    <property name="ireport.encoding" value="UTF-8" />
    <import value="java.util.*" />
    <import value="net.sf.jasperreports.engine.*" />
    <import value="net.sf.jasperreports.engine.data.*" />

    <parameter name="GROSS_RENTAL_INCOME_SQPA_LABEL" isForPrompting="false" class="java.lang.String"/>
    <parameter name="GROSS_RENTAL_INCOME_SQPA" isForPrompting="false" class="java.math.BigDecimal"/>
    <defaultValueExpression ><![CDATA["C:\\Development_New\\Cyprus\\Cyprus\\WebRoot\\report\\"]]></defaultValueExpression>
    </parameter>
    <background>
            <band height="0"  isSplitAllowed="true" >
            </band>
        </background>
        <title>
            <band height="0"  isSplitAllowed="true" >
            </band>
        </title>
        <pageHeader>
            <band height="32"  isSplitAllowed="true" >
                <textField isStretchWithOverflow="true" isBlankWhenNull="true" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="367"
                        y="105"
                        width="96"
                        height="12"
                        key="textField"
                        positionType="Float"
                        isRemoveLineWhenBlank="true">
                            <printWhenExpression><![CDATA[new Boolean($P{GROSS_RENTAL_INCOME_SQPA}!=null)]]></printWhenExpression>
                        </reportElement>
                    <box></box>
                    <textElement>
                        <font pdfFontName="Helvetica-Bold" size="8" isBold="true"/>
                    </textElement>
                <textFieldExpression   class="java.lang.String"><![CDATA[$P{GROSS_RENTAL_INCOME_SQPA_LABEL}]]></textFieldExpression>
                </textField>
                <textField isStretchWithOverflow="true" pattern="###,##0.00" isBlankWhenNull="true" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="472"
                        y="105"
                        width="48"
                        height="12"
                        key="textField"
                        positionType="Float"
                        isRemoveLineWhenBlank="true">
                            <printWhenExpression><![CDATA[new Boolean($P{GROSS_RENTAL_INCOME_SQPA}!=null)]]></printWhenExpression>
                        </reportElement>
                    <box></box>
                    <textElement>
                        <font size="8"/>
                    </textElement>
                <textFieldExpression   class="java.math.BigDecimal"><![CDATA[$P{GROSS_RENTAL_INCOME_SQPA}]]></textFieldExpression>
                </textField>
                </band>
        </detail>
        <columnFooter>
            <band height="0"  isSplitAllowed="true" >
            </band>
        </columnFooter>
        <pageFooter>
            <band height="0"  isSplitAllowed="true" >
            </band>
        </pageFooter>
        <summary>
            <band height="0"  isSplitAllowed="true" >
            </band>
        </summary>
</jasperReport>

回答1:

You can play the sample below to achieve the result you want.

It's demonstrates how to hide the row with two textField elements (two columns) with help of frame elements (of course in cooperation with using isRemoveLineWhenBlank property as said in the question).

The jrxml file code:

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport ... pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="0" bottomMargin="0">
    <parameter name="par1" class="java.lang.String">
        <defaultValueExpression><![CDATA[null]]></defaultValueExpression>
    </parameter>
    <parameter name="par2" class="java.lang.String">
        <defaultValueExpression><![CDATA[null]]></defaultValueExpression>
    </parameter>
    <parameter name="par3" class="java.lang.String">
        <defaultValueExpression><![CDATA[null]]></defaultValueExpression>
    </parameter>
    <parameter name="par4" class="java.lang.String">
        <defaultValueExpression><![CDATA[null]]></defaultValueExpression>
    </parameter>
    <title>
        <band height="139" splitType="Stretch">
            <line>
                <reportElement x="10" y="61" width="520" height="1"/>
            </line>
            <line>
                <reportElement x="10" y="127" width="520" height="1"/>
            </line>
            <textField isBlankWhenNull="true">
                <reportElement x="10" y="85" width="52" height="20" isRemoveLineWhenBlank="true"/>
                <box leftPadding="10">
                    <topPen lineWidth="1.0"/>
                    <leftPen lineWidth="1.0"/>
                    <bottomPen lineWidth="1.0"/>
                    <rightPen lineWidth="1.0"/>
                </box>
                <textElement/>
                <textFieldExpression><![CDATA[$P{par3} == null ? null : "P3: " + $P{par3}]]></textFieldExpression>
            </textField>
            <textField isBlankWhenNull="true">
                <reportElement x="10" y="65" width="52" height="20" isRemoveLineWhenBlank="true"/>
                <box leftPadding="10">
                    <topPen lineWidth="1.0"/>
                    <leftPen lineWidth="1.0"/>
                    <bottomPen lineWidth="1.0"/>
                    <rightPen lineWidth="1.0"/>
                </box>
                <textElement/>
                <textFieldExpression><![CDATA[$P{par1} == null ? null : "P1: " + $P{par1}]]></textFieldExpression>
            </textField>
            <textField isBlankWhenNull="true">
                <reportElement x="62" y="65" width="52" height="20" isRemoveLineWhenBlank="true"/>
                <box leftPadding="10">
                    <topPen lineWidth="1.0"/>
                    <leftPen lineWidth="1.0"/>
                    <bottomPen lineWidth="1.0"/>
                    <rightPen lineWidth="1.0"/>
                </box>
                <textElement/>
                <textFieldExpression><![CDATA[$P{par2} == null ? null : "P2: " + $P{par2}]]></textFieldExpression>
            </textField>
            <textField isBlankWhenNull="true">
                <reportElement x="62" y="85" width="52" height="20" isRemoveLineWhenBlank="true"/>
                <box leftPadding="10">
                    <topPen lineWidth="1.0"/>
                    <leftPen lineWidth="1.0"/>
                    <bottomPen lineWidth="1.0"/>
                    <rightPen lineWidth="1.0"/>
                </box>
                <textElement/>
                <textFieldExpression><![CDATA[$P{par4} == null ? null : "P4: " + $P{par4}]]></textFieldExpression>
            </textField>
            <frame>
                <reportElement x="331" y="65" width="52" height="54"/>
                <textField isBlankWhenNull="true">
                    <reportElement x="0" y="20" width="52" height="20" isRemoveLineWhenBlank="true"/>
                    <box leftPadding="10">
                        <topPen lineWidth="1.0"/>
                        <leftPen lineWidth="1.0"/>
                        <bottomPen lineWidth="1.0"/>
                        <rightPen lineWidth="1.0"/>
                    </box>
                    <textElement/>
                    <textFieldExpression><![CDATA[$P{par3} == null ? null : "P3: " + $P{par3}]]></textFieldExpression>
                </textField>
                <textField isBlankWhenNull="true">
                    <reportElement x="0" y="0" width="52" height="20" isRemoveLineWhenBlank="true"/>
                    <box leftPadding="10">
                        <topPen lineWidth="1.0"/>
                        <leftPen lineWidth="1.0"/>
                        <bottomPen lineWidth="1.0"/>
                        <rightPen lineWidth="1.0"/>
                    </box>
                    <textElement/>
                    <textFieldExpression><![CDATA[$P{par1} == null ? null : "P1: " + $P{par1}]]></textFieldExpression>
                </textField>
            </frame>
            <frame>
                <reportElement x="383" y="65" width="52" height="54"/>
                <textField isBlankWhenNull="true">
                    <reportElement x="0" y="0" width="52" height="20" isRemoveLineWhenBlank="true"/>
                    <box leftPadding="10">
                        <topPen lineWidth="1.0"/>
                        <leftPen lineWidth="1.0"/>
                        <bottomPen lineWidth="1.0"/>
                        <rightPen lineWidth="1.0"/>
                    </box>
                    <textElement/>
                    <textFieldExpression><![CDATA[$P{par2} == null ? null : "P2: " + $P{par2}]]></textFieldExpression>
                </textField>
                <textField isBlankWhenNull="true">
                    <reportElement x="0" y="20" width="52" height="20" isRemoveLineWhenBlank="true"/>
                    <box leftPadding="10">
                        <topPen lineWidth="1.0"/>
                        <leftPen lineWidth="1.0"/>
                        <bottomPen lineWidth="1.0"/>
                        <rightPen lineWidth="1.0"/>
                    </box>
                    <textElement/>
                    <textFieldExpression><![CDATA[$P{par4} == null ? null : "P4: " + $P{par4}]]></textFieldExpression>
                </textField>
            </frame>
            <textField isStretchWithOverflow="true">
                <reportElement x="16" y="0" width="115" height="51"/>
                <box topPadding="10" leftPadding="10" bottomPadding="10" rightPadding="10"/>
                <textElement>
                    <font isBold="true" isItalic="true"/>
                </textElement>
                <textFieldExpression><![CDATA["P1: " + $P{par1} + "\nP2: " +  $P{par2} + "\nP3: " +  $P{par3} + "\nP4: " +  $P{par4}]]></textFieldExpression>
            </textField>
        </band>
    </title>
</jasperReport>

The report's design in iReport: The design in iReport

The result for hiding the whole line: P1=null, P2=null, P3=3, P4=4

The result for hiding the only one field in first column, first row: P1=null, P2=2, P3=3, P4=4

回答2:

the solution are not frames.

Add a printWhenExpression to the textfield:

<printWhenExpression><![CDATA[$P{par1}!=null]]></printWhenExpression></reportElement>

sample:

<textField isBlankWhenNull="true">
<reportElement x="719" y="0" width="52" height="11">
    <printWhenExpression><![CDATA[$P{par1}!=null]]></printWhenExpression>
</reportElement>
<box>
    <topPen lineWidth="1.0"/>
    <leftPen lineWidth="1.0"/>
    <bottomPen lineWidth="1.0"/>
    <rightPen lineWidth="1.0"/>
</box>
<textElement />
<textFieldExpression><![CDATA[$P{par1}]]></textFieldExpression>

来源：https://stackoverflow.com/questions/10117478/ireport-how-to-hide-line-with-text-fields-without-data-line-contains-different

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java

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