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PONull being passed to Spring Security UserDetailsService
 

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    <p>I am trying to add login to my webapp using spring security.</p> <p>This is the first time I am trying to add spring-security 3.2 using pure code config (I have used it several times before with the xml config and the standard <code>UserDetailsService</code> implementation).</p> <p>I have also seen other similar questions around moving to 3.2 but all relate to csrf stuff - which I have currently disabled just to rule those changes out.</p> <p>My config looks like this:</p> <pre><code>@Configuration @EnableWebSecurity public class SecurityConfig extends WebSecurityConfigurerAdapter { @Autowired private UserDetailsServiceImpl userDetailsServiceImpl; @Override protected void configure(HttpSecurity http) throws Exception { http .csrf() .disable() .authorizeRequests() .antMatchers("/resources/**").permitAll() .antMatchers("/dashboard").permitAll() .antMatchers("/sign-up").permitAll() .anyRequest().authenticated() .and() .formLogin() .loginPage("/") .loginProcessingUrl("/loginprocess") .failureUrl("/?loginFailure=true") .permitAll() .and() .logout() .logoutUrl("/logout") .permitAll(); } @Override protected void registerAuthentication(AuthenticationManagerBuilder auth) throws Exception { auth .userDetailsService(userDetailsServiceImpl) .passwordEncoder(bCryptPasswordEncoder()); } @Bean public BCryptPasswordEncoder bCryptPasswordEncoder(){ return new BCryptPasswordEncoder(); } </code></pre> <p>My login form looks like this:</p> <pre><code>&lt;form class="form-signin" action="loginprocess" method="POST"&gt; &lt;h3 class="form-signin-heading"&gt;Already Registered?&lt;/h3&gt; &lt;input type="text" class="form-control" name='j_username' placeholder="User name"&gt; &lt;input type="password" class="form-control" name='j_password' placeholder="Password"&gt;&lt;br/&gt; &lt;input class="btn btn-lg btn-primary" name="submit" type="submit" value='Sign in' &gt; &lt;a class="btn btn-lg btn-primary" href="#" &gt;Sign up&lt;/a&gt; &lt;/form&gt; </code></pre> <p>Finally, I try to log in and whilst debugging and working through the code, in my implementation of the UserDetailsService:</p> <pre><code>@Transactional(readOnly = true, propagation = Propagation.SUPPORTS) public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException { username = username.toLowerCase(); </code></pre> <p>I see that the username string being passed in here is always null - being as this is all being invoked by the underlying spring mechanism I am struggling to see what is happening to the values in my submitted login form.</p> <p>I have looked earlier on and walked through the spring code including the <code>UsernamePasswordAuthenticationFilter</code> class and it seems that the obtainUsername(request) call is just getting null from the request.</p> <p>Can anyone advise what might be wrong or where a good place to start looking would be? where does the username/password get set in the request object by spring?</p> <hr> <p><strong>UPDATE</strong></p> <p>I have also tried changing just the action url of the form and posting to a normal MVC controller - debugging that, the posted data is present and correct in the parameterMap - so it seems like it is something in the security chain that is removing my posted data from the request?</p>
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