如何在参数列表多个时设置文本字段

时间:2012-04-13 08:01:47

标签: jasper-reports

我从我的参数中输入了名称kem的输入列表。它是kem 1kem 2kem 3。我创建 $x{in,pd_id,Kem} 作为参数,但结果只显示来自三个kem的kem 1。我想要的是当我列出kem的列表名称时,数据将显示所有数据。那是kem 1kem 2kem 3。 这是我的代码:

<?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="testspace" language="javascript" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <parameter name="kem" class="java.util.Collection">
        <defaultValueExpression><![CDATA[]]></defaultValueExpression>
    </parameter>
    <queryString>
        <![CDATA[select
PD_ID,
PD_NAME
from wf_proc_def where $X{IN,PD_ID,kem}]]>
    </queryString>
    <field name="PD_ID" class="java.math.BigDecimal"/>
    <field name="PD_NAME" class="java.lang.String"/>
    <background>
        <band splitType="Stretch"/>
    </background>
    <title>
        <band height="79" splitType="Stretch">
            <textField isBlankWhenNull="true">
                <reportElement x="118" y="24" width="334" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[ ("1".equals($P{kem})) ? "kem1"
:("2".equals($P{kem})) ? "kem2"
:("3".equals($P{kem})) ? "kem3"
:("4".equals($P{kem})) ? "kem4"
:("5".equals($P{kem})) ? "kem5"
:null]]></textFieldExpression>
            </textField>
        </band>
    </title>
</jasperReport>

1 个答案:

答案 0 :(得分:2)

我认为您的参数kem有问题,必须包含值列表。您应该初始化此参数。

这是工作样本(适用于iReport的示例数据库):

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport ..>
    <parameter name="cities" class="java.util.List">
        <defaultValueExpression><![CDATA[Arrays.asList(new String[] {"Dallas", "Lyon", "Paris"})]]></defaultValueExpression>
    </parameter>
    <queryString>
        <![CDATA[SELECT ID, CITY FROM ADDRESS WHERE $X{IN,CITY,cities}]]>
    </queryString>
    <field name="ID" class="java.lang.Integer"/>
    <field name="CITY" class="java.lang.String"/>
    <title>
        <band height="79" splitType="Stretch">
            <textField>
                <reportElement x="0" y="12" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$P{cities}]]></textFieldExpression>
            </textField>
        </band>
    </title>
    <detail>
        <band height="20" splitType="Stretch">
            <textField>
                <reportElement x="0" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{CITY}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="100" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{ID}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
</jasperReport>

iReport预览功能中生成的结果: Result generated via iReport preview

<强> 更新

如何借助google guava

按键解析值

样本:

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport ..>
    <import value="com.google.common.collect.*"/>
    <import value="com.google.common.base.*"/>
    <parameter name="cities" class="java.util.List">
        <defaultValueExpression><![CDATA[Arrays.asList(new String[] {"1", "2", "3"})]]></defaultValueExpression>
    </parameter>
    <parameter name="citiesMap" class="java.util.Map">
        <defaultValueExpression><![CDATA[new ImmutableMap.Builder<String, String>().put("1", "Dallas").put("2", "Lyon").put("3", "Paris").build()]]></defaultValueExpression>
    </parameter>
    ...
    <title>
        <band height="79" splitType="Stretch">
            <textField>
                <reportElement x="0" y="12" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$P{cities}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="185" y="12" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[Maps.filterKeys($P{citiesMap}, Predicates.in($P{cities})).values()]]></textFieldExpression>
            </textField>
        </band>
    </title>
    ...
</jasperReport>

结果将是: enter image description here