[displaytag-user] [displaytag - Help] Error messages while using file export option

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https://sourceforge.net/forum/message.php?msg_id=5109875
By: chikkubhai

I had a working export option earlier. However, in order to be able to have
a export option with grouping and sorting enabled, I used the WYSIWYG examples
provided, over wrote my existing library files, class files (HtmlTotalWrapper.java,
ItextTotalWrapper.java,....), displaytag.properties file and changed my jsp
code as shown below:

In the jsp, I am now explicitly mentioning the display table to use my custom
wrapper classes that I wrote and want to use for the each kind of export. Not
only are the display table tags are not using my classes (they are at the right
location or path) that I would like them to use as I mention explicitly in the
jsp, what I do not understand is from where the display table tag is looking
or using these classes that I have not mentioned even in the default
displaytag.properties file??

Excel:
SEVERE: Exception: [.DefaultDecoratorFactory] Unable to load
org.displaytag.sample.decorators.HssfTotalWrapper due to a j
ang.ClassNotFoundException exception Cause:
org.displaytag.sample.decorators.HssfTotalWrapper
java.lang.ClassNotFoundException:
org.displaytag.sample.decorators.HssfTotalWrapper
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1340)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1189)


PDF:
WARNING: Exception: [.TableTag] Unable to reset response before returning exported
data. You are not using an export filter. Be sure that no other jsp tags are
used before display:table or refer to the displaytag documentation on how to
configure the export filter (requires j2ee 1.3).



My JSP:

...
<display:table name="sessionScope.someList" export="true" id="tmpId"
class="dataTable" defaultorder="ascending" cellspacing="1">
							
<display:setProperty name="decorator.media.html"
value="displaytag.sample.decorators.MyHtmlTotalWrapper" />
    						
<display:setProperty name="export.pdf.decorator"
value="displaytag.sample.decorators.MyITextTotalWrapper" />
<display:setProperty name="export.pdf.filename" value="result.pdf" />
							
<display:setProperty name="export.rtf.decorator"
value="displaytag.sample.decorators.MyITextTotalWrapper" />
<display:setProperty name="export.rtf.filename" value="result.rtf" />
							
<display:setProperty name="export.excel.decorator"
value="org.displaytag.sample.decorators.HssfTotalWrapper" />
<display:setProperty name="export.excel.filename" value="result.xls" />
<display:setProperty name="export.csv" value="true" />
<display:setProperty name="export.csv.filename" value="result.csv" />
<display:setProperty name="export.xml" value="true" />
<display:setProperty name="export.xml.filename" value="result.xml" />
							

<display:column ... />
<display:column ... />
<display:column ... />


</display:table>



My displaytag.properties file:
#sort.behavior=list
#sort.amount=list
#basic.empty.showtable=true
basic.msg.empty_list=No results matched your criteria.
paging.banner.placement=top
#paging.banner.onepage=<span class="pagelinks"></span>
export.types=csv excel xml pdf rtf
export.excel=true
export.csv=true
export.xml=true
export.pdf=true
export.rtf=true
export.excel.class=org.displaytag.export.excel.DefaultHssfExportView
export.pdf.class=org.displaytag.export.DefaultPdfExportView
export.rtf.class=org.displaytag.export.DefaultRtfExportView
# if set, file is downloaded instead of opened in the browser window
#export.[mymedia].filename=


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