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Hide image when its value is NULL or Empty in JasperReports

I am using JasperReports 6.2.2 version. I want to hide image if the value is null or empty.

Below code I used in jrxml to hide the image, but this doesn't work for me.

<image>
    <reportElement x="33" y="0" width="88" height="45" uuid="182b40f8-b18e-417c-b9f4-096199533567">
        <printWhenExpression><![CDATA[($F{urlImage}!=null ? $F{urlImage} : "")]]></printWhenExpression>
    </reportElement>
</image>

$F{urlImage} is of String type

It gives an error 

ERROR [btpool0-2] (JRFillSubreport.java:866) - Fill 1: exception
     [java] java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
     [java]     at net.sf.jasperreports.engine.fill.JRFillElement.evaluatePrintWhenExpression(JRFillElement.java:806)
     [java]     at net.sf.jasperreports.engine.fill.JRFillImage.evaluate(JRFillImage.java:471)
     [java]     at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:381)
     [java]     at net.sf.jasperreports.engine.fill.JRFillFrame.evaluate(JRFillFrame.java:159)
     [java]     at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:381)
     [java]     at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:500)
     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2022)
     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:748)
     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:255)
     [java] java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
     [java]     at net.sf.jasperreports.engine.fill.JRFillElement.evaluatePrintWhenExpression(JRFillElement.java:806)
     [java]     at net.sf.jasperreports.engine.fill.JRFillImage.evaluate(JRFillImage.java:471)
     [java]     at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:381)
     [java]     at net.sf.jasperreports.engine.fill.JRFillFrame.evaluate(JRFillFrame.java:159)
     [java]     at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:381)
     [java]     at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:500)
     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2022)
     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:748)
     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:255)
     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:115)
     [java]     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:580)
     [java]     at net.sf.jasperreports.engine.fill.BaseReportFiller.fill(BaseReportFiller.java:414)
     [java]     at net.sf.jasperreports.engine.fill.JRFillSubreport.fillSubreport(JRFillSubreport.java:736)
     [java]     at net.sf.jasperreports.engine.fill.JRSubreportRunnable.run(JRSubreportRunnable.java:59)
     [java]     at net.sf.jasperreports.engine.fill.AbstractThreadSubreportRunner.run(AbstractThreadSubreportRunner.java:221)
     [java]     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
     [java]     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
     [java]     at java.lang.Thread.run(Unknown Source)
     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:115)
     [java]     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:580)
     [java]     at net.sf.jasperreports.engine.fill.BaseReportFiller.fill(BaseReportFiller.java:414)
     [java]     at net.sf.jasperreports.engine.fill.JRFillSubreport.fillSubreport(JRFillSubreport.java:736)
     [java]     at net.sf.jasperreports.engine.fill.JRSubreportRunnable.run(JRSubreportRunnable.java:59)
     [java]     at net.sf.jasperreports.engine.fill.AbstractThreadSubreportRunner.run(AbstractThreadSubreportRunner.java:221)
     [java]     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
     [java]     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
     [java]     at java.lang.Thread.run(Unknown Source)

How to hide the image if its value is null or empty. In urlImage field contains the url of the image. For example: "[http://use.example.com/pop.png][1]".

Solution

  • The printWhenExpression should return a Boolean, currently you are returning a String

    $F{urlImage}!=null ? $F{urlImage} : "" is a ternary expression that returns value of $F{urlImage} if not null otherwise and empty String

    Instead you need just to return a Boolean so you will need an expression like this:

    <printWhenExpression>
    <![CDATA[$F{urlImage}!=null && !$F{urlImage}.isEmpty()]]>    
</printWhenExpression>

    Print when not null and not empty

    Note: Using old jasper-reports lib it will not autobox automatically you need to create the Boolean object yourself

    new Boolean($F{urlImage}!=null && !$F{urlImage}.isEmpty())