Hi,
Using Struts 2.1.8 and the JasperReports plugin for Struts 2
struts2-jasperreports-plugin-2.1.8.jar.
I am trying to display an image in a PDF report. That image is stored as BLOB
in the database.
In struts.xml I have specified the following code:
<action name="afficheFichePDF"
class="com.eni.dvtejb.clientStruts2.action.JasperArticleAction">
<result name="success" type="jasper">
<param name="location">rapports\ficheArticle.jasper</param>
<param name="dataSource">artDetails</param>
<param name="format">PDF</param>
<param name="reportParameters">paramsRapport</param>
<param
name="imageServletUrl">/servlets/image?image=</param>
</result>
</action>
In my web.xml I have added the mapping for the ImageServlet servlet that is
part of the JasperReports library :
<servlet>
<servlet-name>ImageServlet</servlet-name>
<servlet-class>net.sf.jasperreports.j2ee.servlets.ImageServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ImageServlet</servlet-name>
<url-pattern>/servlets/image</url-pattern>
</servlet-mapping>
In my .jrxml file, produced with iReport, I have defined a field with
Expression class equal to java.io.InputStream.
I get the following error :
Struts Problem Report
Struts has detected an unhandled exception:
Messages:
1. Cannot cast object
'org.apache.struts2.views.jasperreports.valuestackdatasou...@a0d16c' with class
'org.apache.struts2.views.jasperreports.ValueStackDataSource' to class
'java.io.InputStream'
2. Error evaluating expression : Source text : $F{image}
3. Error evaluating expression : Source text : $F{image}
File:
org/codehaus/groovy/runtime/typehandling/DefaultTypeTransformation.java
Line number: 340
Stacktraces
javax.servlet.ServletException: Error evaluating expression : Source text :
$F{image}
org.apache.struts2.views.jasperreports.JasperReportsResult.doExecute(JasperReportsResult.java:331)
org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186)
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:362)
I tried without the image, it works. But then how exactly do you handle images
with that plugin ? What is the format of the image supposed to be in the .jrxml
file ?
Thanks for helping.
