[Struts 2.1.8] Displaying images in a report with the JasperReports plugin
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=locationrapports\ficheArticle.jasper/param
param name=dataSourceartDetails/param
param name=formatPDF/param
param name=reportParametersparamsRapport/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-nameImageServlet/servlet-name
servlet-classnet.sf.jasperreports.j2ee.servlets.ImageServlet/servlet-class
/servlet
servlet-mapping
servlet-nameImageServlet/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.
Issues adding i18n Chinese support to existing Struts based code
I started working a new assignment of Struts based maintenance J2EE project. I am new to Struts and having some trouble understanding the code and I seek Struts expers help here . Basically we need to add Internationalization support to the existing Struts based code and here I am trying to show Japanese characters in the browser. my jsp code looks like below: -- %@ taglib uri=/WEB-INF/tld/globaltech-formatter.tld prefix=fmt % ... div class=tabBody table class=impact2form cellpadding=0 cellspacing=2 tr class=tableRowOdd td colspan = 2bean:message bundle=customer key=customer.calcs.payoff//td /tr tr thfmt:message bundle=customer metaDataRef=loanAmount//th tdhtml:text property=loanAmount maxlength=10 size=10 tabindex=10 //td /tr globaltech-formatter.tld - tag namemessage/name tagclasscom.globaltech.web.taglib.message.MessageTag/tagclass bodycontentempty/bodycontent attribute namearg0/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namearg1/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namearg2/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namearg3/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namearg4/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namebundle/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namekey/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namelocale/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namename/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute nameproperty/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namescope/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute attribute namemetaDataRef/name requiredfalse/required rtexprvaluetrue/rtexprvalue /attribute /tag ... ... struts-customer.xml - ?xml version=1.0 encoding=ISO-8859-1? !DOCTYPE struts-config PUBLIC -//Apache Software Foundation//DTD Struts Configuration 1.1//EN http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd; struts-config . . message-resources key=customer parameter=com.globaltech.customer.CustomerResources/ /struts-config What I did ? --- 1. I started creating a new file using the Notepad editor on Windows XP . The file is then saved as type Unicode Big Endian Next, using the native2ascii utility from JDK 1.4 SDK, I use the following command to convert this file to an ASCII file: native2ascii -encoding UnicodeBig CustomerResources_zh.ucd CustomerResources_zh.properties The resulting output CustomerResources_zh.properties contains the required escape code. I am using this file CustomerResources_zh.properties in my web project. 2. In my internet explorer, Tools -- Internet Options -- Languages tab, I added the language Chinese (Hong Kong S.A.R.) [zh-HK] 3. When I fire a request to my jsp, I see garbage character in my browser instead of chinese characters. I tried to even add this line %@ page contentType=text/html; charset=utf-8 % to top of my jsp file but still no use. Can you please clarify what I am missing here and how to add i18n support for Chinese locale to my existing Struts based code ?
Validation of indexed properties
I've got a problem relating to the validation of indexed properties in Struts
1.1
I get the following error message when I try to access an ArrayList of
students in my DynaValidatorForm
root cause
java.lang.IndexOutOfBoundsException: Index: 1, Size: 0
java.util.ArrayList.RangeCheck(Unknown Source)
java.util.ArrayList.get(Unknown Source)
org.apache.struts.action.DynaActionForm.get(DynaActionForm.java:298)
Here is some background to the problem...
In my session I have an ArrayList called studentsList of objects of type
experiment.mybeans.Student. A Student object has getter and setter methods
for id, year and gradeAverage.
In my students.jsp I create a table by iterating through my student objects
like this...
c:forEach var=students items=${sessionScope.group.studentsList}
trtdhtml:text indexed=true name=students property=id//td
tdhtml:text indexed=true name=students property=year//td
tdhtml:text indexed=true name=students
property=gradeAverage//td/tr
/c:forEach
As you can see the table contains empty text boxes and I would like to
validate these have been filled in, so in struts-config.xml I create my
dynavalidatorform as follows...
form-bean name=studentsForm
type=org.apache.struts.validator.DynaValidatorForm
form-property name=students type=java.util.ArrayList /
/form-bean
And in validation.xml I place my validation rules...
form name=studentsForm
field property=id indexedListProperty=students depends=required
arg0 key=error.studentid.required/
/field
field property=year indexedListProperty=students depends=required
arg0 key=error.studentyear.required/
/field
field property=gradeAverage indexedListProperty=students
depends=required
arg0 key=error.studentgrade.required/
/field
/form
Now here is where things start to go a bit pear-shaped
I have read somewhere online that I need to populate the form ArrayList
before I get to my jsp page. So I have created an action class called
PreStudentsAction.java which takes the student ArrayList out of the session
and assigns it to the student ArrayList in the form before forwarding to the
students.jsp page...
public class PreStudentsAction extends Action{
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception
{
DynaValidatorForm myForm = (DynaValidatorForm)form;
Group group = (Group)request.getSession().getAttribute(group);
ArrayListStudent students = group.getStudentsList();
myForm.set(students, students);
return (mapping.findForward(success));
}
}
Finally when I run my application my table is displayed but when I fill in
the table and press submit I get the IndexOutOfBounds error. It appears to
me that the student ArrayList in the form remains empty and that my Action
class was unsuccessful in populating the form's ArrayList.
Can anybody see what I'm doing wrong?
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