如何在单独的Excel工作表中显示每个子报表

Question

我想用iReport for MS Excel创建一个报告.

我的报告包括两个子报告.我需要在单独的Excel工作表中的每个子报表,但生成的导出文件包含一个工作表中的所有数据.

我不知道这个选项需要哪些设置.

Answer 1

您可以借助net.sf.jasperreports.export.xls.break.after.row属性来解决此问题.

您可以为报表中的"sheet break"元素设置此net.sf.jasperreports.export.xls.break.after.row属性(例如,line或staticText元素).

在下面的示例中,我将line元素放入Group Footer band,以便在Excel中为新组生成新工作表.

这是我的样本,主报告:

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport ..>
    <parameter name="SUBREPORT_DIR" class="java.lang.String" isForPrompting="false">
        <defaultValueExpression><![CDATA["path_to_subreport"]]></defaultValueExpression>
    </parameter>
    <queryString>
        <![CDATA[SELECT id, addressId FROM document ORDER BY addressId]]>
    </queryString>
    <field name="ID" class="java.lang.Integer"/>
    <field name="ADDRESSID" class="java.lang.Integer"/>
    <group name="addressGroup">
        <groupExpression><![CDATA[$F{ADDRESSID}]]></groupExpression>
        <groupHeader>
            <band height="53">
                <subreport>
                    <reportElement x="189" y="0" width="200" height="31">
                        <property name="net.sf.jasperreports.export.xls.break.after.row" value="&quot;true&quot;"/>
                    </reportElement>
                    <subreportParameter name="addressId">
                        <subreportParameterExpression><![CDATA[$F{ADDRESSID}]]></subreportParameterExpression>
                    </subreportParameter>
                    <connectionExpression><![CDATA[$P{REPORT_CONNECTION}]]></connectionExpression>
                    <subreportExpression><![CDATA[$P{SUBREPORT_DIR} + "subreport_new_sheet_for_excel.jasper"]]></subreportExpression>
                </subreport>
                <staticText>
                    <reportElement x="0" y="33" width="100" height="20"/>
                    <textElement textAlignment="Center" verticalAlignment="Middle">
                        <font isItalic="true"/>
                    </textElement>
                    <text><![CDATA[ID]]></text>
                </staticText>
            </band>
        </groupHeader>
        <groupFooter>
            <band height="9">
                <line>
                    <reportElement x="1" y="5" width="100" height="1">
                        <property name="net.sf.jasperreports.export.xls.break.after.row" value="true"/>
                    </reportElement>
                    <graphicElement>
                        <pen lineWidth="0.0"/>
                    </graphicElement>
                </line>
            </band>
        </groupFooter>
    </group>
    <detail>
        <band height="20" splitType="Stretch">
            <textField>
                <reportElement x="0" y="0" width="100" height="20"/>
                <box>
                    <topPen lineWidth="1.0"/>
                    <leftPen lineWidth="1.0"/>
                    <bottomPen lineWidth="1.0"/>
                    <rightPen lineWidth="1.0"/>
                </box>
                <textElement/>
                <textFieldExpression><![CDATA[$F{ID}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
</jasperReport>

我的子报告:

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport ...>
    <parameter name="addressId" class="java.lang.Integer" isForPrompting="false"/>
    <queryString>
        <![CDATA[SELECT city, street FROM address WHERE id = $P{addressId}]]>
    </queryString>
    <field name="CITY" class="java.lang.String"/>
    <field name="STREET" class="java.lang.String"/>
    <detail>
        <band height="20" splitType="Stretch">
            <textField>
                <reportElement x="0" y="0" width="258" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA["City: " + $F{CITY}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="258" y="0" width="297" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA["Street: " + $F{STREET}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
</jasperReport>

结果将是:

结果,而不使用"中断"元件(具有net.sf.jasperreports.export.xls.break.after.row)为:

您可以在Advanced Excel Features post中找到有关信息的更多信息.