条件样式不能改变背景色答案

【问题标题】：Conditional Style can't change backcolor条件样式不能改变背景色
【发布时间】：2014-01-29 15:48:02
【问题描述】：

我正在使用 Jasper 报告基本上，我的问题是当字段为空时，我无法使用 Styles 标记中的条件样式更改背景颜色

我不知道条件语句的问题或条件为真时条件样式不能改变。

所以，我希望找到解决这个问题的方法，下面是我的报告文件代码：

<?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="FEP_ENERGY_DATA" 
language="groovy" pageWidth="1333" pageHeight="1350" whenNoDataType="NoDataSection" 
columnWidth="1293" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="0"/>
<property name="net.sf.jasperreports.style.evaluation.time.enabled" value="true"/>

<style name="style_TOU">
    <conditionalStyle>
        <conditionExpression><![CDATA[$F{TOTAL_EXP} == null]]></conditionExpression>
        <style mode="Opaque" backcolor="#FFFF00"/>
    </conditionalStyle>
    <conditionalStyle>
        <conditionExpression><![CDATA[$F{TOU1_KWH_EXP} == null]]></conditionExpression>
        <style mode="Opaque" backcolor="#FFFF00"/>
    </conditionalStyle>
    <conditionalStyle>
        <conditionExpression><![CDATA[$F{TOU2_KWH_EXP} == null]]></conditionExpression>
        <style mode="Opaque" backcolor="#FFCC00"/>
    </conditionalStyle>
    <conditionalStyle>
        <conditionExpression><![CDATA[$F{TOU3_KWH_EXP} == null]]></conditionExpression>
        <style mode="Opaque" backcolor="#FF3300"/>
    </conditionalStyle>
    <conditionalStyle>
        <conditionExpression><![CDATA[$F{TOU4_KWH_EXP} == null]]></conditionExpression>
        <style mode="Opaque" backcolor="#77BCD4"/>
    </conditionalStyle>
</style>


<parameter name="daydate" class="java.lang.String"/>
<parameter name="metersId" class="java.util.Collection"/>
<parameter name="imagepath" class="java.lang.String"/>
<queryString>
    <![CDATA[WITH METER_ENERGY_DATA AS
      (
                 SELECT MTR_INFO.MTR_ID, MTR_INFO.MTR_SLNO AS METER_SLNO ,MTR_INFO.ACCOUNT_NO AS ACCOUNT_NO, MTR_INFO.SUB_NO AS SUB_NO,
                        CONVERT(varchar,ENERGY_TOU.TOTAL_EXP) as TOTAL_EXP, CONVERT(varchar,ENERGY_TOU.TOU1_EXP) as TOU1_KWH_EXP,
                        CONVERT(varchar,ENERGY_TOU.TOU2_EXP) as TOU2_KWH_EXP, CONVERT(varchar,ENERGY_TOU.TOU3_EXP) as TOU3_KWH_EXP,
                        CONVERT(varchar,ENERGY_TOU.TOU4_EXP) as TOU4_KWH_EXP , ROW_NUMBER() OVER (PARTITION BY 
                        ENERGY_TOU.METER_ID ORDER BY ENERGY_TOU.METER_TIME DESC) ROW_NUM
                 FROM   AECMDMS_DEV.dbo.METER_INFO AS MTR_INFO
                 LEFT JOIN
                 (SELECT * FROM AECMDMS_DEV.dbo.ENERGY_WITH_TOU as ENERGY
                  WHERE ENERGY.METER_TIME BETWEEN '2014-01-10' AND '2014-01-10 23:59:59.999' ) AS ENERGY_TOU ON (ENERGY_TOU.METER_ID = MTR_INFO.MTR_ID)
                 )

                  SELECT METER_SLNO ,ACCOUNT_NO, SUB_NO,  LEFT(TOTAL_EXP,LEN(TOTAL_EXP)-2) as TOTAL_EXP, LEFT(TOU1_KWH_EXP, LEN(TOU1_KWH_EXP)-2) AS TOU1_KWH_EXP ,LEFT(TOU2_KWH_EXP, LEN(TOU2_KWH_EXP)-2) AS TOU2_KWH_EXP, LEFT(TOU3_KWH_EXP, LEN(TOU3_KWH_EXP)-2) AS TOU3_KWH_EXP, LEFT(TOU4_KWH_EXP, LEN(TOU4_KWH_EXP)-2) AS TOU4_KWH_EXP
                  FROM METER_ENERGY_DATA AS MTR_ENERGY
                  WHERE MTR_ENERGY.ROW_NUM = 1
     ]]>
</queryString>
<field name="METER_SLNO" class="java.lang.String"/>
<field name="ACCOUNT_NO" class="java.lang.String"/>
<field name="SUB_NO" class="java.lang.String"/>
<field name="TOTAL_EXP" class="java.lang.String"/>
<field name="TOU1_KWH_EXP" class="java.lang.String"/>
<field name="TOU2_KWH_EXP" class="java.lang.String"/>
<field name="TOU3_KWH_EXP" class="java.lang.String"/>
<field name="TOU4_KWH_EXP" class="java.lang.String"/>
<background>
    <band splitType="Stretch"/>
</background>
<title>
    <band height="102" splitType="Stretch">
        <image scaleImage="FillFrame">
            <reportElement positionType="Float" stretchType="RelativeToBandHeight" x="421" y="0" width="370" height="70"/>
            <imageExpression><![CDATA[$P{imagepath}]]></imageExpression>
        </image>
        <textField>
            <reportElement x="2" y="81" width="1292" height="20"/>
            <textElement textAlignment="Center">
                <font size="12" isBold="true"/>
            </textElement>
            <textFieldExpression><![CDATA["ENERGY DATA EXPORT ON "+$P{daydate}]]></textFieldExpression>
        </textField>
    </band>
</title>
<pageHeader>
    <band height="31" splitType="Stretch">
        <frame>
            <reportElement x="0" y="20" width="1292" height="10"/>
        </frame>
    </band>
</pageHeader>
<columnHeader>
    <band height="40" splitType="Stretch">
        <frame>
            <reportElement x="2" y="0" width="1294" height="40"/>
            <staticText>
                <reportElement mode="Opaque"   x="564" y="20" width="110" height="20" forecolor="#000000" backcolor="#77BCD4"/>
                <box rightPadding="5">
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle">
                    <font fontName="Arial" size="10" isBold="true"/>
                </textElement>
                <text><![CDATA[TOTAL]]></text>
            </staticText>
            <staticText>
                <reportElement mode="Opaque" style="style_TOU" x="674" y="20" width="110" height="20" forecolor="#000000" backcolor="#77BCD4"/>
                <box rightPadding="5">
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle">
                    <font fontName="Arial" size="10" isBold="true"/>
                </textElement>
                <text><![CDATA[TOU 1]]></text>
            </staticText>
            <staticText>
                <reportElement mode="Opaque" x="784" y="20" width="110" height="20" forecolor="#000000" backcolor="#77BCD4"/>
                <box rightPadding="5">
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle">
                    <font fontName="Arial" size="10" isBold="true"/>
                </textElement>
                <text><![CDATA[TOU 2]]></text>
            </staticText>
            <staticText>
                <reportElement mode="Opaque" x="894" y="20" width="110" height="20" forecolor="#000000" backcolor="#77BCD4"/>
                <box rightPadding="5">
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle">
                    <font fontName="Arial" size="10" isBold="true"/>
                </textElement>
                <text><![CDATA[TOU 3]]></text>
            </staticText>
            <staticText>
                <reportElement mode="Opaque" x="1004" y="20" width="110" height="20" forecolor="#000000" backcolor="#77BCD4"/>
                <box rightPadding="5">
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle">
                    <font fontName="Arial" size="10" isBold="true"/>
                </textElement>
                <text><![CDATA[TOU 4]]></text>
            </staticText>
            <staticText>
                <reportElement mode="Opaque" x="564" y="0" width="550" height="20" forecolor="#000000" backcolor="#77BCD4"/>
                <box>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.5" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.5" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle">
                    <font fontName="Arial" size="10" isBold="true"/>
                </textElement>
                <text><![CDATA[Active Energy(kWh)]]></text>
            </staticText>
            <staticText>
                <reportElement mode="Opaque" x="178" y="0" width="130" height="40" forecolor="#000000" backcolor="#77BCD4"/>
                <box leftPadding="5">
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle">
                    <font fontName="Arial" size="10" isBold="true"/>
                </textElement>
                <text><![CDATA[Serial No.]]></text>
            </staticText>
            <staticText>
                <reportElement mode="Opaque" x="436" y="0" width="128" height="40" forecolor="#000000" backcolor="#77BCD4"/>
                <box rightPadding="5">
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle">
                    <font fontName="Arial" size="10" isBold="true"/>
                </textElement>
                <text><![CDATA[Subscribtion No.]]></text>
            </staticText>
        </frame>
        <staticText>
            <reportElement mode="Opaque" x="310" y="0" width="128" height="40" forecolor="#000000" backcolor="#77BCD4"/>
            <box rightPadding="5">
                <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
            </box>
            <textElement textAlignment="Center" verticalAlignment="Middle">
                <font fontName="Arial" size="10" isBold="true"/>
            </textElement>
            <text><![CDATA[Account No.]]></text>
        </staticText>
    </band>
</columnHeader>
<detail>
    <band height="24" splitType="Stretch">
        <rectangle>
            <reportElement x="180" y="0" width="936" height="24" isRemoveLineWhenBlank="true" backcolor="#D0E8F0">
                <printWhenExpression><![CDATA[$V{REPORT_COUNT}.intValue() % 2 != 1]]></printWhenExpression>
            </reportElement>
            <graphicElement>
                <pen lineWidth="0.0" lineColor="#CCCCCC"/>
            </graphicElement>
        </rectangle>
        <frame>
            <reportElement x="180" y="0" width="936" height="24" backcolor="#FFFFFF"/>
            <textField pattern="###0.0">
                <reportElement mode="Transparent" x="258" y="0" width="128" height="24" backcolor="#CCCCCC"/>
                <box rightPadding="3">
                    <pen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <topPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle"/>
                <textFieldExpression><![CDATA[$F{SUB_NO}+" "]]></textFieldExpression>
            </textField>
            <textField evaluationTime="Band">
                <reportElement mode="Transparent" style="style_TOU" x="386"  y="0" width="110" height="24"/>
                <box rightPadding="3">
                    <pen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <topPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Right" verticalAlignment="Middle"/>
                <textFieldExpression><![CDATA[$F{TOTAL_EXP} ==  null ? "n/a" : $F{TOTAL_EXP} +" "]]></textFieldExpression>
            </textField>
            <textField evaluationTime="Band">
                <reportElement mode="Transparent" style="style_TOU" x="496" y="0" width="110" height="24"/>
                <box rightPadding="3">
                    <pen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <topPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Right" verticalAlignment="Middle"/>
                <textFieldExpression><![CDATA[$F{TOU1_KWH_EXP}== null ? "n/a" : $F{TOU1_KWH_EXP} +" "]]></textFieldExpression>
            </textField>
            <textField evaluationTime="Band">
                <reportElement mode="Transparent" style="style_TOU" x="606" y="0" width="110" height="24"/>
                <box rightPadding="3">
                    <pen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <topPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Right" verticalAlignment="Middle"/>
                <textFieldExpression><![CDATA[$F{TOU2_KWH_EXP} == null ? "n/a" : $F{TOU2_KWH_EXP}+" "]]></textFieldExpression>
            </textField>
            <textField evaluationTime="Band">
                <reportElement mode="Transparent" style="style_TOU" x="716" y="0" width="110" height="24"/>
                <box rightPadding="3">
                    <pen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <topPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Right" verticalAlignment="Middle"/>
                <textFieldExpression><![CDATA[$F{TOU3_KWH_EXP} == null ? "n/a" : $F{TOU3_KWH_EXP} +" "]]></textFieldExpression>
            </textField>
            <textField evaluationTime="Band">
                <reportElement mode="Transparent" style="style_TOU" x="826" y="0" width="110" height="24"/>
                <box rightPadding="3">
                    <pen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <topPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Right" verticalAlignment="Middle"/>
                <textFieldExpression><![CDATA[$F{TOU4_KWH_EXP} == null ? "n/a" : $F{TOU4_KWH_EXP} +" "]]></textFieldExpression>
            </textField>
            <textField pattern="###0.0">
                <reportElement mode="Transparent" x="130" y="0" width="126" height="24" backcolor="#CCCCCC"/>
                <box rightPadding="3">
                    <pen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <topPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.75" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle"/>
                <textFieldExpression><![CDATA[$F{ACCOUNT_NO}+" "]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement mode="Transparent" x="0" y="0" width="130" height="24" backcolor="#CCCCCC"/>
                <box leftPadding="5">
                    <topPen lineWidth="0.5" lineColor="#CCCCCC"/>
                    <leftPen lineWidth="0.75" lineColor="#CCCCCC"/>
                    <bottomPen lineWidth="0.5" lineColor="#CCCCCC"/>
                    <rightPen lineWidth="0.5" lineColor="#CCCCCC"/>
                </box>
                <textElement textAlignment="Center" verticalAlignment="Middle"/>
                <textFieldExpression><![CDATA[$F{METER_SLNO}]]></textFieldExpression>
            </textField>
        </frame>
    </band>
</detail>
<pageFooter>
    <band height="20" splitType="Stretch">
        <textField>
            <reportElement x="994" y="0" width="80" height="20"/>
            <textElement textAlignment="Right"/>
            <textFieldExpression><![CDATA["Page "+$V{PAGE_NUMBER}+" of"]]></textFieldExpression>
        </textField>
        <textField evaluationTime="Report">
            <reportElement x="1074" y="0" width="42" height="20"/>
            <textFieldExpression><![CDATA[" " + $V{PAGE_NUMBER}+" "]]></textFieldExpression>
        </textField>
        <textField pattern="dd/MM/yyyy h.mm a">
            <reportElement x="182" y="0" width="100" height="20"/>
            <textFieldExpression><![CDATA[new java.util.Date()]]></textFieldExpression>
        </textField>
    </band>
</pageFooter>
<noData>
    <band height="33" splitType="Stretch">
        <staticText>
            <reportElement x="522" y="0" width="291" height="31"/>
            <textElement textAlignment="Center" verticalAlignment="Middle">
                <font size="24" isBold="true"/>
            </textElement>
            <text><![CDATA[No Data To Display]]></text>
        </staticText>
    </band>
</noData>

【问题讨论】：

标签： java jasper-reports report

【解决方案1】：

您在字段级别有mode=Transparent，它的优先级高于样式级别的mode=Opaque。设置 Transparent on 样式并将其从字段中删除，目前您的条件样式在透明字段上设置背景颜色。更改文本字段：

       <textField pattern="###0.0">
            <reportElement mode="Transparent" ...

到（1）：

       <textField pattern="###0.0">
            <reportElement ...

或（2）：

       <textField pattern="###0.0">
            <reportElement mode="Opaque" ...

我不确定您可以设置哪些，但在您更改后它应该可以工作。此外，如果您希望在条件不满足时该字段是透明的，您可以将样式更改为：

 <style name="style_TOU" mode="Transparent">

您编写样式的方式将更改所有字段的背景（如果其中任何一个为空）。如果您只想更改具有空值的字段的颜色，我认为您必须为每个字段编写单独的样式....

【讨论】：

还是没变，如果你能写xml代码解释一下！