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I forget...Don't work in this way
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Happens nothing. No error message. What can I do?
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Happens nothing. No error message. What can I do?

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In my Action class execute method, I save an field from the user's form (login.jsp), if for any reason there is a problem such as a empty field or no valid field I want to report details back to the user so they can correct .<br />
Something like <br />
&nbsp;<br />
ActionErrors errors = new ActionErrors();<br />
&nbsp; &nbsp; &nbsp; &nbsp; if ((campo2 == null) || (campo2.length() &lt;&nbsp;1))<br />
&nbsp; &nbsp; &nbsp; &nbsp; errors.add(&quot;campo2&quot;, new ActionError(&quot;error.campo2.<wbr />required&quot;)<wbr />);<br />
<br />
&nbsp; &nbsp; &nbsp; &nbsp; if (!errors.empty())<br />
&nbsp; &nbsp; &nbsp; &nbsp; { <br />
&nbsp; &nbsp; &nbsp; &nbsp; return mapping.findForward(&quot;failu<wbr />re&quot;);<br />
&nbsp; &nbsp; &nbsp; &nbsp; }<br />
<br />
In user's form (login.jsp) I have the follow code:<br />
&nbsp;<br />
&lt;html:text property=&quot;campo2&quot; value=&quot;&quot;/&gt;<br />
&lt;html:errors property=&quot;campo2&quot;/&gt;<br />
<br />
In the bundle resource I have :<br />
<br />
error.campo2.required=Camp<wbr />o2 obbligatorio<br />
<br />
In the struts-config.xml , I have :<br />
<br />
&lt;action path=&quot;/login&quot; type=&quot;com.srl.SomeAction&quot; name=&quot;loginForm&quot; parameter=&quot;method&quot; scope=&quot;request&quot; &gt;<br />
&nbsp; &nbsp; &nbsp; &nbsp;&lt;forward name=&quot;success&quot; path=&quot;/pages/resultPage.js<wbr />p&quot;/&gt;<br />
&nbsp; &nbsp; &nbsp; &nbsp;&lt;forward name=&quot;failure&quot; path=&quot;/pages/login.jsp&quot;/&gt;<br />
&nbsp; &nbsp; &lt;/action&gt;<br />

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In my Action class execute method, I save an field from the user's form (login.jsp), if for any reason there is a problem such as a empty field or no valid field I want to report details back to the user so they can correct .
Something like 
 
ActionErrors errors = new ActionErrors();
        if ((campo2 == null) || (campo2.length() < 1))
        errors.add("campo2", new ActionError("error.campo2.required"));

        if (!errors.empty())
        { 
        return mapping.findForward("failure");
        }

In user's form (login.jsp) I have the follow code:
 
<html:text property="campo2" value=""/>
<html:errors property="campo2"/>

In the bundle resource I have :

error.campo2.required=Campo2 obbligatorio

In the struts-config.xml , I have :

<action path="/login" type="com.srl.SomeAction" name="loginForm" parameter="method" scope="request" >
       <forward name="success" path="/pages/resultPage.jsp"/>
       <forward name="failure" path="/pages/login.jsp"/>
    </action>


ActionErrors + return message

JavaServer Pages (JSP) allow the development of dynamically generated web pages. It uses the Java programming language; JSP pages are translated into servlets at runtime, with each servlet being cached and reused until the JSP is modified. JSP allows Java code to be interleaved with static web markup content, so the resulting page can be compiled and executed on the server to deliver the content.