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user Digest 8 Feb 2010 00:11:37 -0000 Issue 9002
Topics (messages 204992 through 204994):
[Struts 2.1.8] Displaying images in a report with the JasperReports plugin
204992 by: Celinio Fernandes
Issues adding i18n Chinese support to existing Struts based code
204993 by: Brian Fed
Validation of indexed properties
204994 by: hugh111111
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user_204992.ezm (zipped)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.ValueStackDataSource@(protected)'
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.
Attachment:
user_204993.ezm (zipped)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:
------------------------------------------
....
<%@(protected)" %>
...
<div class="tabBody">
<table class="impact2form" cellpadding="0" cellspacing="2">
<tr class="tableRowOdd">
<td colspan = 2><bean:message bundle="customer"
key="customer.calcs.payoff"/></td>
</tr>
<tr>
<th><fmt:message bundle="customer" metaDataRef="loanAmount"/></th>
<td><html:text property="loanAmount" maxlength="10" size="10" tabindex="10"
/></td>
</tr>
....
....
globaltech-formatter.tld
---------------------------------
....
....
<tag>
<name>message</name>
<tagclass>com.globaltech.web.taglib.message.MessageTag</tagclass>
<bodycontent>empty</bodycontent>
<attribute>
<name>arg0</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>arg1</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>arg2</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>arg3</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>arg4</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>bundle</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>key</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>locale</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>name</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>property</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>scope</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>metaDataRef</name>
<required>false</required>
<rtexprvalue>true</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
<%@(protected)" %>
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 ?
Attachment:
user_204994.ezm (zipped)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}" >
<tr><td><html:text indexed="true" name="students" property="id"/></td>
<td><html:text indexed="true" name="students" property="year"/></td>
<td><html: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");
ArrayList<Student> 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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