Image expression URL in Jasper Reports - jasper-reports

Question

I would like to embed an image into my JasperReports jrxml file. I have this directory structure.
Tomcat Root
webapps
reports
-->images
--> company_logo.jpg
-->reports
-->sample.jasper
-->WEB-INF
-->classes
And I tried doing this thinking that this is relative to my reports context root
<image>
<reportElement x="0" y="0" width="104" height="40"/>
<imageExpression class="java.lang.String">
<![CDATA["images/company_logo.jpg"]]>
</imageExpression>
</image>
..and this also
<image>
<reportElement x="0" y="0" width="104" height="40"/>
<imageExpression class="java.lang.String">
<![CDATA["/images/company_logo.jpg"]]>
</imageExpression>
</image>
but it always says there was an error loading bytes from location JRLoader.
I tried doing this and it works, but I am a bit confused why my first two attempt doesn't.
Is this really how you embed images in JasperReports? Do you need to supply the whole path? I am thinking that there should be a page relative
something.
<image>
<reportElement x="0" y="0" width="104" height="40"/>
<imageExpression class="java.lang.String">
<![CDATA["http://localhost:8080/reports/images/company_logo.jpg"]]>
</imageExpression>
</image>
I am a bit puzzled about the correct way.

Answer 1

<![CDATA["../images/company_logo.jpg"]]> should do the trick. The path is relative to your .jasper file.

Answer 2

You need to create a PARAMETER of type String called for example CONTEXT, and from your JSP send the servlet context:
parameters.put("CONTEXT",this.getServletContext().getRealPath("/"));
Now, in your report you use the parameter:
$P{CONTEXT}.toString()+"reports/images/logo.png"
The same apply for sub reports or other web resources, example:
$P{CONTEXT}.toString()+"reports/OrdenCompraAlmacen_Items.jasper"
I hope it is useful.

Answer 3

With .jrxml when use an absolute path with image, when the packaged jar filr will be deployed you will get:
java.lang.IllegalArgumentException: name
at sun.misc.URLClassPath$Loader.findResource(Unknown Source) ~[na:1.8.0_121]
at sun.misc.URLClassPath.findResource(Unknown Source) ~[na:1.8.0_121]
at java.net.URLClassLoader$2.run(Unknown Source) ~[na:1.8.0_121]
at java.net.URLClassLoader$2.run(Unknown Source) ~[na:1.8.0_121]
Try to load resource as:
<imageExpression><![CDATA[this.getClass().getResourceAsStream("/img/mdg_logo.jpg")]]></imageExpression>

Answer 4

sometimes is better use File.separtor: "ima" + File.separator + "logo.jpg"

Answer 5

Use the below expression in the image Expression of jasper report IDE on image properties of the jrxml and the relative image path
Accordingly change w.r.t path
getClass().getResource("META-INF/resources/webjars/Bank/themes/default/images/Logo.png").openStream()

Answer 6

This way the path is relative to your current working directory of your project. "." means current working directory.

Answer 7

Put your picture in the following structure:
webapps
reports
-->reports
-->sample.jasper
-->WEB-INF
-->classes
-->images
--> company_logo.jpg
<imageExpression class="java.lang.String">
<![CDATA["company_logo.jpg"]]>
</imageExpression>