Question

当所有值都为0时，如何在交叉表中隐藏由measure（详细信息部分）生成的列。当前正在获取一个值为零的列。谁能指出解决方案？

jrxml代码

<?xml version="1.0" encoding="UTF-8"?>
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<!-- 2016-02-23T23:05:34 -->
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        </box>
    </style>
    <queryString language="SQL">
        <![CDATA[select 
id,
name,
cost,
0 as new
from product]]>
    </queryString>
    <field name="ID" class="java.lang.Integer"/>
    <field name="NAME" class="java.lang.String"/>
    <field name="COST" class="java.math.BigDecimal"/>
    <field name="NEW" class="java.lang.Integer"/>
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                <rowGroup name="ID1" width="60">
                    <bucket class="java.lang.Integer">
                        <bucketExpression><![CDATA[$F{ID}]]></bucketExpression>
                    </bucket>
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                                <reportElement x="0" y="0" width="60" height="20" uuid="ed1b3cbe-2a65-4ee8-9882-50b1817b941c"/>
                                <textFieldExpression><![CDATA[$V{ID1}]]></textFieldExpression>
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                                <reportElement x="0" y="0" width="-2147483648" height="-2147483648" uuid="9c778658-e79c-4919-8e40-196b735ce152"/>
                                <text><![CDATA[Total ID1]]></text>
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                <columnGroup name="NAME1" height="20">
                    <bucket class="java.lang.String">
                        <bucketExpression><![CDATA[$F{NAME}]]></bucketExpression>
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                                <textFieldExpression><![CDATA[$V{NAME1}]]></textFieldExpression>
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                                <text><![CDATA[Total NAME1]]></text>
                            </staticText>
                        </cellContents>
                    </crosstabTotalColumnHeader>
                </columnGroup>
                <measure name="NEW_MEASURE1" class="java.lang.Integer" calculation="Sum">
                    <measureExpression><![CDATA[$F{NEW}]]></measureExpression>
                </measure>
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                            </reportElement>
                            <textFieldExpression><![CDATA[($V{NEW_MEASURE1}.intValue()==0)?null:$V{NEW_MEASURE1}]]></textFieldExpression>
                        </textField>
                    </cellContents>
                </crosstabCell>
                <crosstabCell width="60" height="20" columnTotalGroup="NAME1">
                    <cellContents mode="Opaque" style="Crosstab 2_CT">
                        <textField>
                            <reportElement x="0" y="0" width="60" height="20" forecolor="#FFFFFF" uuid="df784b91-a1cc-4cd6-b7f8-56a271e0947a"/>
                            <textFieldExpression><![CDATA[$V{NEW_MEASURE1}]]></textFieldExpression>
                        </textField>
                    </cellContents>
                </crosstabCell>
                <crosstabCell width="60" height="20" rowTotalGroup="ID1">
                    <cellContents mode="Opaque" style="Crosstab 2_CT">
                        <textField>
                            <reportElement x="0" y="0" width="60" height="20" forecolor="#FFFFFF" uuid="70e0669b-1684-4cc8-8671-0c29ac37921c"/>
                            <textFieldExpression><![CDATA[$V{NEW_MEASURE1}]]></textFieldExpression>
                        </textField>
                    </cellContents>
                </crosstabCell>
                <crosstabCell width="60" height="20" rowTotalGroup="ID1" columnTotalGroup="NAME1">
                    <cellContents mode="Opaque" style="Crosstab 2_CT">
                        <textField>
                            <reportElement x="0" y="0" width="60" height="20" forecolor="#FFFFFF" uuid="1da6c415-c92a-4624-aae2-59802fe85538"/>
                            <textFieldExpression><![CDATA[$V{NEW_MEASURE1}]]></textFieldExpression>
                        </textField>
                    </cellContents>
                </crosstabCell>
            </crosstab>
        </band>
    </summary>
</jasperReport>

编辑：无法在查询中进行过滤，因为它会减少行数。即使列值为0，我也喜欢显示行。

Answer 1

在填写报告后，您无法删除jrxml中的整个列，因此您需要的是首先必须填充报告（需要循环所有记录以查看是否全部为0）。

您的解决方案是：

使用正确的过滤器（where）查找正确的查询sql，它允许您保留记录但不包括生成列的值。
使用预查询（在示例java中）了解最终查询应如何通过参数将此查询传递给jasper报告。
使用dynamic-reports或dynamic-jasper，动态生成报告，首先循环数据源以查找需要包含哪些列。
Post在导出，删除和移动物体之前详细说明了Jasper Print。

当所有数据为零时，如何隐藏交叉表列？

1 个答案: