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Error issuing struts2 diploma on html page

I added my error and message to the struts2 action class using addActionMessageand methods addActionError. Now I want a code to display this message and this error on the html page? Can I print?

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Put

<s:actionerrors />

and

<s:actionmessages />

in your jsp

And, for a better graphic result, use a specific div container (one red, one green, for example), and before checking to see if you have any messages or errors (to print the div if it is not empty):

<s:if test="hasActionErrors()">
   <div class="feedError">
       <s:actionerrors />
   </div>
</s:if>

<s:if test="hasActionMessages()">
   <div class="feedOk">
       <s:actionmessages />
   </div>
</s:if>

and in CSS

.feedError{
    width: 100%;
    border: 10px solid red;
}

.feedOk{
    width: 100%;
    border: 10px solid green;
}

EDIT: , , " " HTML. ajax- , JSon, , .

JSP; HTML, Scriptlets , JSP.

FreeMarker, .

JSP - (untested) .ftl:

<#if (actionErrors?size>0)>
    <div class="feedError">
        <@s.actionerror />
    </div>
</#if>

<#if (actionMessages?size>0)>
    <div class="feedOk">
        <@s.actionmessage />
    </div>
</#if>

Velocity ( , ):

#if( $actionErrors.size() > 0 )
   <div class="feedError">
   #foreach( $msg in $actionErrors )
       [$msg]<br />
   #end
   </div>
#end


#if( $actionMessages.size() > 0 )
   <div class="feedOk">
   #foreach( $msg in $actionMessages )
       [$msg]<br />
   #end
   </div>
#end

. JSP , web.xml,

<jsp-config>
        <jsp-property-group>
                <url-pattern>*.jsp</url-pattern>
                <scripting-invalid>true</scripting-invalid>
        </jsp-property-group>
</jsp-config>

JSP Struts2 - , , imho.

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