在没有http auto config的情况下直接配置spring security后找不到"j_spring_security_check"

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/login").permitAll()
                .anyRequest().authenticated()
                .and()
            .formLogin()
                .loginPage("/login")
                .loginProcessingUrl("/j_spring_security_check")
                .defaultSuccessURL("/", true)
                .permitAll();
    }
}

<form name="loginForm" action="/j_spring_security_check" method="post">
   <label for="username">Username:</label>
   <input type="text" id="username" name="username" />
   <label for="password">Password:</label>
   <input type="password" id="password" name="password" />
   <input type="submit" value="Login" />
</form>