JasperReports：如何根據參數構造標題標題

Question

如何根據參數構造標題標題？

例如，我有一個日期，周，月和年的報告。我有一個參數，但我不知道如何在標題中顯示它。

我要的是：

If I put parameter $P{date1} and $P{date2} then it will show 'Date range from $P{date1} and $P{date2}' for header 1 

else if parameter $P{w}$P{month}$P{year} then 'For weekly $P{w}$P{month}$P{year}' for header 2 

else if parameter $P{month}$P{year} then 'For monthly $P{month}$P{year}' for header 3 

else if parameter $P{q}$P{year} then 'For quarter $P{q}$P{year}' for header 4 

else if parameter $P{year} then 'For yearly $P{year}' for header 5 

更新： - 我有新的問題，當我運行報告，我的輸出無法正確顯示。 這是我的代碼： -

<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="Company Profile by Date Registered" pageWidth="595" pageHeight="842" whenNoDataType="NoDataSection" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" isFloatColumnFooter="true"> 
    <property name="ireport.zoom" value="1.0"/> 
    <property name="ireport.x" value="0"/> 
    <property name="ireport.y" value="0"/> 
    <parameter name="daterangefrom" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[]]></defaultValueExpression> 
    </parameter> 
    <parameter name="daterangeto" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[]]></defaultValueExpression> 
    </parameter> 
    <parameter name="monthy" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[]]></defaultValueExpression> 
    </parameter> 
    <parameter name="yrs" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[]]></defaultValueExpression> 
    </parameter> 
    <parameter name="quarter" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[]]></defaultValueExpression> 
    </parameter> 
    <parameter name="weeks" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[]]></defaultValueExpression> 
    </parameter> 
    <queryString> 
     <![CDATA[select a.entered, 
a.modified, 
a.org_id, 
a.name, 
a.organization_type, 
c.description as companygroup,lead, 
a.industry_temp_code, 
b.description, 
a.equity_structure,a.operation_date from organization a 
left join lookup_industry_group b on a.industry_temp_code = b.code 
left join lookup_company_group c on c.code = a.company_group 
left join ticket d on d.org_id = a.org_id 
where 
((d.entered BETWEEN $P{daterangefrom} AND $P{daterangeto}) or ($P{daterangefrom} =' ' AND $P{daterangeto} =' ')) 
AND 
((datename(month,d.entered) = $P{monthy}) or ($P{monthy} = ' ')) 
AND 
((datename(year,d.entered) = $P{yrs}) or ($P{yrs} = ' ')) 
AND 
((datepart(qq, d.entered) = $P{quarter}) or ($P{quarter} = ' ')) 
AND 
((DATEPART(day, d.entered - 1)/7 + 1 = $P{weeks}) or ($P{weeks} = ' '))]]> 
    </queryString> 
    <field name="entered" class="java.sql.Timestamp"/> 
    <field name="modified" class="java.sql.Timestamp"/> 
    <field name="org_id" class="java.lang.Integer"/> 
    <field name="name" class="java.lang.String"/> 
    <field name="organization_type" class="java.lang.String"/> 
    <field name="companygroup" class="java.lang.String"/> 
    <field name="lead" class="java.lang.String"/> 
    <field name="industry_temp_code" class="java.lang.Integer"/> 
    <field name="description" class="java.lang.String"/> 
    <field name="equity_structure" class="java.lang.String"/> 
    <field name="operation_date" class="java.sql.Timestamp"/> 
    <title> 
     <band height="79" splitType="Stretch"> 
      <textField isStretchWithOverflow="true" isBlankWhenNull="true"> 
       <reportElement x="18" y="14" width="537" height="41" isRemoveLineWhenBlank="true"/> 
       <textElement/> 
       <textFieldExpression><![CDATA[(($P{daterangefrom} != null) && ($P{daterangeto} != null)) ? "Date range from " + $P{daterangefrom} + " and " + $P{daterangeto} 
: (($P{weeks} != null) && ($P{monthy} != null) && ($P{yrs} != null)) ? "For weekly " +$P{weeks} + $P{monthy} + $P{yrs} 
: (($P{monthy} != null) && ($P{yrs} != null)) ? "For monthly " + $P{monthy} + $P{yrs} 
: (($P{quarter} != null) && ($P{yrs} != null)) ? "For quarter " + $P{quarter} + $P{yrs} 
: (($P{yrs} != null)) ? "For yearly " + $P{yrs} : null]]></textFieldExpression> 
      </textField> 
     </band> 
    </title> 
</jasperReport> 

Answer 1

你可以把textField元素的Title帶，並設置textFieldExpression財產。

你應該在表達式中使用條件運算符? :。

樣品（JRXML文件的片段）：

<?xml version="1.0" encoding="UTF-8"?> 
<jasperReport ...> 
    <parameter name="date1" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[null]]></defaultValueExpression> 
    </parameter> 
    <parameter name="date2" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[null]]></defaultValueExpression> 
    </parameter> 
    <parameter name="w" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[null]]></defaultValueExpression> 
    </parameter> 
    <parameter name="q" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[null]]></defaultValueExpression> 
    </parameter> 
    <parameter name="month" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[null]]></defaultValueExpression> 
    </parameter> 
    <parameter name="year" class="java.lang.String"> 
     <defaultValueExpression><![CDATA[null]]></defaultValueExpression> 
    </parameter> 
    <title> 
     <band height="79" splitType="Stretch"> 
      <textField> 
       <reportElement x="18" y="14" width="537" height="41"/> 
       <textElement/> 
       <textFieldExpression><![CDATA[$P{date1} != null && $P{date2} != null ? "Date range from " + $P{date1} + " and " + $P{date2} 
: $P{w} != null && $P{month} != null && $P{year} ? "For weekly " + $P{w} + $P{month} + $P{year} 
: $P{month} != null && $P{year} != null ? "For monthly " + $P{month} + $P{year} 
: $P{q} != null && $P{year} != null ? "For quarter " + $P{q} + $P{year} 
: $P{year} != null ? "For yearly " + $P{year} : null]]></textFieldExpression> 
      </textField> 
     </band> 
    </title> 
</jasperReport>