spring-projects/spring-security

hello guys i am implementing user authentication in spring security i am stuck at when authentication exception occur at loginfilter then method of LoginFilter.java

@Override
    protected void unsuccessfulAuthentication(HttpServletRequest request, HttpServletResponse response,
            AuthenticationException failed) throws IOException, ServletException {
        super.unsuccessfulAuthentication(request, response, failed);
        ObjectMapper mapper = new ObjectMapper();
        response.setCharacterEncoding("UTF-8");
        response.getWriter().write(mapper.writeValueAsString(authException.getAuthentication().getInfo()));

    }

gets executed in above method i have added Info object in response.
now my question is that after LoginFilter AuthFilter(present in spring security configuration) is executed but only in error or any java exception i don't want this to executed on exception because if user enter wrong user and pass then i want to send response from LoginFilter.

LoginFilter.java

public class LoginFilter extends AbstractAuthenticationProcessingFilter {
// constructor and beans;
@Override
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response)
            throws AuthenticationException, IOException, ServletException {
      // other logic
        return auth;
    }
@Override
    protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain chain,
            Authentication authResult) throws IOException, ServletException {
// logic
}

@Override
    protected void unsuccessfulAuthentication(HttpServletRequest request, HttpServletResponse response,
            AuthenticationException failed) throws IOException, ServletException {
        super.unsuccessfulAuthentication(request, response, failed);       
// this method is executed when user attempt wrong username or pass
        ObjectMapper mapper = new ObjectMapper();
        response.setCharacterEncoding("UTF-8");
        response.getWriter().write(mapper.writeValueAsString(authException.getAuthentication().getInfo()));
    }

AuthFilter.java

public class AuthFilter extends GenericFilterBean {
@Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
// some other logic
if (auth.isAuthenticated())
                chain.doFilter(request, response);
            else {
                ObjectMapper mapper = new ObjectMapper();
                res.getWriter().write(mapper.writeValueAsString(auth.getInfo()));
            }

}
}

security config

.and()
.addFilterBefore(new LoginFilter(new AntPathRequestMatcher("/budget/login")),
                        UsernamePasswordAuthenticationFilter.class)
                .addFilterBefore(new AuthFilter(),
                        UsernamePasswordAuthenticationFilter.class);