是的你是对的。您可以使用背景带打印水印文本(或图片)。您应该设置此带的高度- 我认为最好将此带的高度设置为与报告的高度相同。
例如,对于A4格式,我为Background's band height设置了802像素。计算此数字的公式是:报告的高度(A4格式为842像素) -左边距的宽度(在我的情况下为20)-右边距的 宽度(在我的情况下为20)。
设置背景带的大小后,您可以将图像或静态文本(textField)元素放入此(背景)带。
您可以借助旋转属性旋转staticText (textField)元素的文本。此属性的可用值是:
- 无(无旋转 - 0 度),
- 向左(旋转 270 度),
- 右(旋转 90 度),
- 颠倒(旋转 180 度)。
在工作示例中,我使用样式设置textField的旋转属性,对于一个元素,我将此属性的值直接设置为textField元素:
<?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="watermark_sample" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="bc290dd1-903c-4740-8484-16a2ebe872d2">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="0"/>
<style name="Rotated180" mode="Opaque" forecolor="#FF33CC" hAlign="Center" vAlign="Middle" rotation="UpsideDown" fontName="Curlz MT" fontSize="40"/>
<style name="Rotated270" mode="Opaque" forecolor="#FF33CC" hAlign="Center" vAlign="Middle" rotation="Left" fontName="Curlz MT" fontSize="40"/>
<style name="Rotated90" mode="Opaque" forecolor="#FF33CC" hAlign="Center" vAlign="Middle" rotation="Right" fontName="Curlz MT" fontSize="40"/>
<style name="NotRotated" mode="Opaque" forecolor="#FF33CC" hAlign="Center" vAlign="Middle" rotation="None" fontName="Curlz MT" fontSize="40"/>
<queryString>
<![CDATA[SELECT ID, NAME, COST FROM PRODUCT ORDER BY NAME]]>
</queryString>
<field name="ID" class="java.lang.Integer"/>
<field name="NAME" class="java.lang.String"/>
<field name="COST" class="java.math.BigDecimal"/>
<background>
<band height="802" splitType="Stretch">
<image hAlign="Center">
<reportElement uuid="42c96db8-4afd-4834-ba69-6b211df0c42f" style="Rotated180" mode="Opaque" x="118" y="372" width="318" height="58"/>
<imageExpression><![CDATA["D:\\java\\jasper_reports\\happy_new_year_h.png"]]></imageExpression>
</image>
<staticText>
<reportElement uuid="d7401e33-f1b3-49ca-85d1-2923d82508f6" style="NotRotated" x="106" y="22" width="342" height="63"/>
<textElement/>
<text><![CDATA[Happy New Year!]]></text>
</staticText>
<staticText>
<reportElement uuid="d7401e33-f1b3-49ca-85d1-2923d82508f6" style="Rotated270" x="24" y="236" width="93" height="330"/>
<textElement/>
<text><![CDATA[Happy New Year!]]></text>
</staticText>
<staticText>
<reportElement uuid="d7401e33-f1b3-49ca-85d1-2923d82508f6" style="Rotated90" x="445" y="236" width="93" height="330"/>
<textElement/>
<text><![CDATA[Happy New Year!]]></text>
</staticText>
<staticText>
<reportElement uuid="d7401e33-f1b3-49ca-85d1-2923d82508f6" style="Rotated180" x="106" y="702" width="342" height="63"/>
<textElement/>
<text><![CDATA[Happy New Year!]]></text>
</staticText>
<staticText>
<reportElement uuid="3bdd5d67-94f0-457f-8477-b1d0438d7bc9" mode="Opaque" x="79" y="85" width="428" height="139" forecolor="#9999FF"/>
<textElement textAlignment="Center" verticalAlignment="Middle" rotation="Right">
<font fontName="Edwardian Script ITC" size="40" isItalic="true"/>
</textElement>
<text><![CDATA[Happy New Year!]]></text>
</staticText>
</band>
</background>
<title>
<band height="79" splitType="Stretch">
<staticText>
<reportElement uuid="6d708618-09e4-433d-ab48-bb9cbd0b832b" x="92" y="29" width="370" height="20"/>
<textElement>
<font size="14" isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Sample of report with watermark]]></text>
</staticText>
</band>
</title>
<columnHeader>
<band height="20" splitType="Stretch">
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="0" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Id]]></text>
</staticText>
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="200" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Cost]]></text>
</staticText>
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="100" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Name]]></text>
</staticText>
</band>
</columnHeader>
<detail>
<band height="20" splitType="Stretch">
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="0" y="0" width="100" height="20"/>
<box leftPadding="10" rightPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Right"/>
<textFieldExpression><![CDATA[$F{ID}]]></textFieldExpression>
</textField>
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="100" y="0" width="100" height="20"/>
<box leftPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement/>
<textFieldExpression><![CDATA[$F{NAME}]]></textFieldExpression>
</textField>
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="200" y="0" width="100" height="20"/>
<box leftPadding="10" rightPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Right"/>
<textFieldExpression><![CDATA[$F{COST}]]></textFieldExpression>
</textField>
</band>
</detail>
</jasperReport>
图像元素不支持旋转属性,但您可以手动创建任何您想要的图像。
注意:在这个示例中,我对textField和图像元素使用了mode="Opaque" 。
结果将是(通过iReport预览功能):
为了解决您的问题(几个文本作为水印),我将几个textField元素放到了背景带中。报告的模板是:
<?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="watermark_sample" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="bc290dd1-903c-4740-8484-16a2ebe872d2">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="68"/>
<queryString>
<![CDATA[SELECT ID, NAME, COST FROM PRODUCT ORDER BY NAME]]>
</queryString>
<field name="ID" class="java.lang.Integer"/>
<field name="NAME" class="java.lang.String"/>
<field name="COST" class="java.math.BigDecimal"/>
<background>
<band height="802" splitType="Stretch">
<staticText>
<reportElement uuid="3bdd5d67-94f0-457f-8477-b1d0438d7bc9" mode="Transparent" x="63" y="112" width="428" height="56" forecolor="#808080"/>
<textElement textAlignment="Center" verticalAlignment="Middle" rotation="None">
<font fontName="Serif" size="40" isItalic="true"/>
</textElement>
<text><![CDATA[this is a good report]]></text>
</staticText>
<staticText>
<reportElement uuid="3bdd5d67-94f0-457f-8477-b1d0438d7bc9" mode="Transparent" x="63" y="272" width="428" height="56" forecolor="#808080"/>
<textElement textAlignment="Center" verticalAlignment="Middle" rotation="None">
<font fontName="Serif" size="40" isItalic="true"/>
</textElement>
<text><![CDATA[this is a good report]]></text>
</staticText>
<staticText>
<reportElement uuid="3bdd5d67-94f0-457f-8477-b1d0438d7bc9" mode="Transparent" x="63" y="432" width="428" height="56" forecolor="#808080"/>
<textElement textAlignment="Center" verticalAlignment="Middle" rotation="None">
<font fontName="Serif" size="40" isItalic="true"/>
</textElement>
<text><![CDATA[this is a good report]]></text>
</staticText>
<staticText>
<reportElement uuid="3bdd5d67-94f0-457f-8477-b1d0438d7bc9" mode="Transparent" x="63" y="594" width="428" height="56" forecolor="#808080"/>
<textElement textAlignment="Center" verticalAlignment="Middle" rotation="None">
<font fontName="Serif" size="40" isItalic="true"/>
</textElement>
<text><![CDATA[this is a good report]]></text>
</staticText>
</band>
</background>
<title>
<band height="79" splitType="Stretch">
<staticText>
<reportElement uuid="6d708618-09e4-433d-ab48-bb9cbd0b832b" x="92" y="29" width="370" height="20"/>
<textElement>
<font size="14" isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Sample of report with watermark]]></text>
</staticText>
</band>
</title>
<columnHeader>
<band height="20" splitType="Stretch">
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="0" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Id]]></text>
</staticText>
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="200" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Cost]]></text>
</staticText>
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="100" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Name]]></text>
</staticText>
</band>
</columnHeader>
<detail>
<band height="20" splitType="Stretch">
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="0" y="0" width="100" height="20"/>
<box leftPadding="10" rightPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Right"/>
<textFieldExpression><![CDATA[$F{ID}]]></textFieldExpression>
</textField>
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="100" y="0" width="100" height="20"/>
<box leftPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement/>
<textFieldExpression><![CDATA[$F{NAME}]]></textFieldExpression>
</textField>
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="200" y="0" width="100" height="20"/>
<box leftPadding="10" rightPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Right"/>
<textFieldExpression><![CDATA[$F{COST}]]></textFieldExpression>
</textField>
</band>
</detail>
</jasperReport>
注意:在这个示例中,我对textField元素使用了mode="Transparent" 。
报告的设计(在iReport中):
结果将是(通过iReport预览功能):
如果您想设置自定义旋转角度,您可以在 JasperReports 帖子的页面上的 Watermark中找到更多信息。
更新:您可以解决第二个问题,例如,借助Commons Lang API的StringUtils.repeat(java.lang.String, int)方法。
您可以将导入指令(<import value="org.apache.commons.lang3.StringUtils"/>
在我的示例中)添加到报告的模板中,并使用如下表达式:
<textFieldExpression><![CDATA[StringUtils.repeat("Welcome to a New Year! ", $P{numberOfRepeats})]]></textFieldExpression>
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="watermark_sample" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="bc290dd1-903c-4740-8484-16a2ebe872d2">
<import value="org.apache.commons.lang3.StringUtils"/>
<parameter name="numberOfRepeats" class="java.lang.Integer" isForPrompting="false">
<defaultValueExpression><![CDATA[10]]></defaultValueExpression>
</parameter>
<queryString>
<![CDATA[SELECT ID, NAME, COST FROM PRODUCT ORDER BY NAME]]>
</queryString>
<field name="ID" class="java.lang.Integer"/>
<field name="NAME" class="java.lang.String"/>
<field name="COST" class="java.math.BigDecimal"/>
<background>
<band height="802" splitType="Stretch">
<textField isStretchWithOverflow="true">
<reportElement uuid="26290245-c5cf-4f28-b637-c5b0253910a5" mode="Transparent" x="21" y="112" width="470" height="56" forecolor="#808080"/>
<textElement textAlignment="Center" verticalAlignment="Middle" rotation="None" markup="none">
<font fontName="Serif" size="20" isItalic="true"/>
</textElement>
<textFieldExpression><![CDATA[StringUtils.repeat("Welcome to a New Year! ", $P{numberOfRepeats})]]></textFieldExpression>
</textField>
</band>
</background>
<title>
<band height="79" splitType="Stretch">
<staticText>
<reportElement uuid="6d708618-09e4-433d-ab48-bb9cbd0b832b" x="92" y="29" width="370" height="20"/>
<textElement>
<font size="14" isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Sample of report with watermark]]></text>
</staticText>
</band>
</title>
<columnHeader>
<band height="20" splitType="Stretch">
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="0" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Id]]></text>
</staticText>
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="200" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Cost]]></text>
</staticText>
<staticText>
<reportElement uuid="414160e2-41c4-4326-8ec8-ff7c230ac2c3" mode="Opaque" x="100" y="0" width="100" height="20" forecolor="#000000" backcolor="#3399FF"/>
<box leftPadding="10" rightPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Name]]></text>
</staticText>
</band>
</columnHeader>
<detail>
<band height="20" splitType="Stretch">
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="0" y="0" width="100" height="20"/>
<box leftPadding="10" rightPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Right"/>
<textFieldExpression><![CDATA[$F{ID}]]></textFieldExpression>
</textField>
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="100" y="0" width="100" height="20"/>
<box leftPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement/>
<textFieldExpression><![CDATA[$F{NAME}]]></textFieldExpression>
</textField>
<textField>
<reportElement uuid="5715c691-0b39-4530-9009-3b7179bb06f5" x="200" y="0" width="100" height="20"/>
<box leftPadding="10" rightPadding="10">
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Right"/>
<textFieldExpression><![CDATA[$F{COST}]]></textFieldExpression>
</textField>
</band>
</detail>
</jasperReport>
结果将是(通过iReport预览功能):
细节:
- 在这个示例中,我使用了Commons Lang library v. 3.1。您应该将此库添加到应用程序的类路径中(在我的情况下,它是iReport的 cp)。
- 我使用参数numberOfRepeats ( java.lang.Integer ) 来设置要生成的短语数。