考虑有一个表格，其中有4列EmpId , EmpFirstName , EmpSecondName, EmpAge
EmpId EmpFirstName EmpSecondName EmpAge
101 Jackson Bilson 45
102 Willson 25
103 Barley 23
output:
EmpId EmpFirstName EmpSecondName EmpAge
101 Jackson Bilson 45
102 Willson -- 25
103 Barley -- 23
我的XML源代码在这里
<?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="sample" language="groovy" pageWidth="842" pageHeight="595" orientation="Landscape" columnWidth="802" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="0" uuid="e6f67a14-570a-4046-9ab3-52cbb2cb9d36">
<property name="ireport.zoom" value="2.0"/>
<property name="ireport.x" value="8"/>
<property name="ireport.y" value="626"/>
<style name="Title" fontName="Serif" fontSize="26" isBold="true" pdfFontName="Helvetica-Bold"/>
<style name="SubTitle" forecolor="#666666" fontName="Serif" fontSize="18"/>
<style name="Column header" forecolor="#FFFFFF" fontName="Serif" fontSize="12" isBold="true"/>
<style name="Detail" fontName="Serif" fontSize="12"/>
<queryString>
<![CDATA[SELECT * FROM Employee;]]>
</queryString>
<field name="EmployeeId" class="java.lang.String">
<fieldDescription><![CDATA[]]></fieldDescription>
</field>
<field name="EmployeeFirstName" class="java.lang.String">
<fieldDescription><![CDATA[]]></fieldDescription>
</field>
<field name="EmployeeSecondName" class="java.lang.String">
<fieldDescription><![CDATA["$F{EmployeeSecondName}.equals("0") ? "--" : $F{EmployeeSecondName}"]]></fieldDescription>
</field>
<field name="EmployeeAge" class="java.lang.String">
<fieldDescription><![CDATA[]]></fieldDescription>
</field>
<variable name="EmployeeSecondName_1" class="java.lang.Integer" calculation="Count">
<variableExpression><![CDATA[$F{EmployeeSecondName}]]></variableExpression>
</variable>
<variable name="EmployeeId_1" class="java.lang.Integer" calculation="Count">
<variableExpression><![CDATA[$F{EmployeeId}]]></variableExpression>
</variable>
<variable name="EmployeeId_2" class="java.lang.Integer" resetType="Column" calculation="Count">
<variableExpression><![CDATA[$F{EmployeeId}]]></variableExpression>
</variable>
<variable name="EmployeeId_3" class="java.lang.Integer" calculation="Count">
<variableExpression><![CDATA[$F{EmployeeId}]]></variableExpression>
</variable>
<variable name="EmployeeId_4" class="java.lang.Integer" calculation="System">
<variableExpression><![CDATA[$F{EmployeeId}]]></variableExpression>
</variable>
<variable name="EmployeeId_5" class="java.lang.Integer" resetType="Column" calculation="Count">
<variableExpression><![CDATA[$F{EmployeeId}]]></variableExpression>
</variable>
<variable name="EmployeeFirstName_1" class="java.lang.Integer" resetType="Column" calculation="Count">
<variableExpression><![CDATA[$F{EmployeeFirstName}]]></variableExpression>
</variable>
<group name="Group1">
<groupExpression><![CDATA[(int)($V{REPORT_COUNT}/15)]]></groupExpression>
<groupHeader>
<band height="40">
<staticText>
<reportElement x="12" y="13" width="100" height="20" uuid="3aeea084-6d27-457c-bb0e-5d455609fcde"/>
<textElement>
<font fontName="Serif" size="12" isBold="true"/>
</textElement>
<text><![CDATA["EmployeeId"]]></text>
</staticText>
<staticText>
<reportElement x="146" y="10" width="177" height="20" uuid="664c98ba-24b9-4c87-8e86-eac17066a4e3"/>
<textElement>
<font fontName="Serif" size="12" isBold="true"/>
</textElement>
<text><![CDATA["EmployeeFirstName"]]></text>
</staticText>
<staticText>
<reportElement x="426" y="13" width="168" height="20" uuid="f461036a-e9a0-4c21-9d7d-2a307e83a6d5"/>
<textElement>
<font fontName="Serif" size="12" isBold="true"/>
</textElement>
<text><![CDATA["EmployeeSecondName""]]></text>
</staticText>
<staticText>
<reportElement x="671" y="13" width="106" height="20" uuid="959acc83-336f-4941-98c6-6b860f628bd7"/>
<textElement>
<font fontName="Serif" size="12" isBold="true"/>
</textElement>
<text><![CDATA["EmployeeAge"]]></text>
</staticText>
</band>
</groupHeader>
<groupFooter>
<band height="30">
<frame>
<reportElement mode="Opaque" x="652" y="0" width="150" height="30" forecolor="#CCCCCC" backcolor="#CCCCCC" uuid="9bcd5cd2-f3ed-41fc-9d6c-4702a5eb2d0a"/>
</frame>
</band>
</groupFooter>
</group>
<group name="Group2">
<groupExpression><![CDATA[(int)($V{REPORT_COUNT}/5)]]></groupExpression>
<groupHeader>
<band height="30"/>
</groupHeader>
</group>
<background>
<band height="575" splitType="Stretch">
<frame>
<reportElement mode="Opaque" x="-20" y="475" width="105" height="100" backcolor="#666666" uuid="622f9467-c399-4189-9d30-50ff7d9c52a5"/>
<textField>
<reportElement style="Column header" x="0" y="0" width="104" height="73" forecolor="#000000" uuid="f2a4aeb9-ff2e-44a5-9db2-bb5b0590e03a"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font size="54" isBold="true" pdfFontName="Helvetica-Bold"/>
</textElement>
<textFieldExpression><![CDATA[$V{PAGE_NUMBER}]]></textFieldExpression>
</textField>
<textField evaluationTime="Report">
<reportElement style="Column header" x="0" y="77" width="104" height="20" forecolor="#000000" uuid="96f7b50c-6c9d-441c-b9ec-e60299eac1ba"/>
<box leftPadding="4" rightPadding="4"/>
<textElement textAlignment="Center">
<font size="16" isBold="false"/>
</textElement>
<textFieldExpression><![CDATA[$V{PAGE_NUMBER}]]></textFieldExpression>
</textField>
<line>
<reportElement mode="Transparent" x="42" y="73" width="20" height="1" backcolor="#FFFFFF" uuid="2117cc39-0ba0-44ad-be80-98daa5324bc6"/>
</line>
</frame>
</band>
</background>
<title>
<band height="105" splitType="Stretch">
<staticText>
<reportElement x="222" y="35" width="280" height="36" uuid="48f86f36-c575-421a-ba54-797ace4f0917"/>
<textElement textAlignment="Justified">
<font fontName="Serif" size="24"/>
</textElement>
<text><![CDATA[ EMPLOYEE REPORT]]></text>
</staticText>
</band>
</title>
<pageHeader>
<band splitType="Stretch"/>
</pageHeader>
<columnHeader>
<band height="156" splitType="Stretch"/>
</columnHeader>
<detail>
<band height="47" splitType="Stretch">
<textField pattern="#,##0.00">
<reportElement x="0" y="5" width="98" height="20" uuid="c623e57a-404e-4820-91f4-a7808b3d316d"/>
<textElement>
<font fontName="Serif"/>
</textElement>
<textFieldExpression><![CDATA[$F{EmployeeId}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="163" y="5" width="128" height="23" uuid="73bc515a-8af9-4ef0-aca5-35bb41a30892"/>
<textFieldExpression><![CDATA[$F{EmployeeFirstName}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="426" y="5" width="151" height="23" uuid="94e1ec36-478a-4761-b49a-8502057c2a08"/>
<textFieldExpression><![CDATA[$F{EmployeeSecondName}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="642" y="5" width="108" height="23" uuid="2d6f40ac-098a-4c11-a3cd-e432b1f12bb5"/>
<textFieldExpression><![CDATA[$F{EmployeeAge}]]></textFieldExpression>
</textField>
</band>
</detail>
<columnFooter>
<band splitType="Stretch"/>
</columnFooter>
<pageFooter>
<band height="39" splitType="Stretch">
<textField pattern="EEEEE dd MMMMM yyyy">
<reportElement style="Column header" x="671" y="0" width="131" height="20" forecolor="#000000" uuid="1632c120-8789-4389-8a3e-8e68b964393d"/>
<textElement textAlignment="Right">
<font size="12" isBold="false"/>
</textElement>
<textFieldExpression><![CDATA[new java.util.Date()]]></textFieldExpression>
</textField>
</band>
</pageFooter>
<summary>
<band splitType="Stretch"/>
</summary>
</jasperReport>
我在Xml代码中使用这种语法但不能正常工作请帮帮我
"$F{EmployeeSecondName}.equals("0") ? "--" : $F{EmployeeSecondName
答案 0 :(得分：0)
你可以尝试：
$F{EmployeeSecondName}.isEmpty() ? "--" : $F{EmployeeSecondName}