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    copied!<p>I did something similar (thanks axtavt): </p> <pre><code>public class AjaxAuthenticationSuccessHandler extends SimpleUrlAuthenticationSuccessHandler { public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication auth) throws IOException, ServletException { if ("XMLHttpRequest".equals(request.getHeader("X-Requested-With"))) { response.getWriter().print( "{success:true, targetUrl : \'" + this.getTargetUrlParameter() + "\'}"); response.getWriter().flush(); } else { super.onAuthenticationSuccess(request, response, auth); } }} </code></pre> <p>I chose to extend the simple success handler for the default behavior on non-Ajax requests. Here's the XML to make it work:</p> <pre><code>&lt;http auto-config="false" use-expressions="true" entry-point-ref="authenticationProcessingFilterEntryPoint"&gt; &lt;custom-filter position="FORM_LOGIN_FILTER" ref="authenticationFilter" /&gt; ... ... &lt;/http&gt; &lt;beans:bean id="authenticationProcessingFilterEntryPoint" class="org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint"&gt; &lt;beans:property name="loginFormUrl" value="/index.do" /&gt; &lt;beans:property name="forceHttps" value="false" /&gt; &lt;/beans:bean&gt; &lt;beans:bean id="authenticationFilter" class= "org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter"&gt; &lt;beans:property name="authenticationManager" ref="authenticationManager"/&gt; &lt;beans:property name="filterProcessesUrl" value="/j_spring_security_check"/&gt; &lt;beans:property name="sessionAuthenticationStrategy" ref="sas" /&gt; &lt;beans:property name="authenticationFailureHandler" ref="failureHandler"/&gt; &lt;beans:property name="authenticationSuccessHandler" ref="successHandler"/&gt; &lt;/beans:bean&gt; &lt;beans:bean id="successHandler" class="foo.AjaxAuthenticationSuccessHandler"&gt; &lt;beans:property name="defaultTargetUrl" value="/login.html"/&gt; &lt;/beans:bean&gt; &lt;beans:bean id="failureHandler" class="foo.AjaxAuthenticationFailureHandler" /&gt; </code></pre>
 

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