add session Registy

springboot-springSecurity2/src/main/java/com/us/example/config/WebSecurityConfig.java

@@ -26,6 +26,8 @@ public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
 
     @Autowired
      private  CustomUserService customUserService;
+    @Autowired
+    SessionRegistry sessionRegistry;
 
     @Autowired
     protected void configure(AuthenticationManagerBuilder auth) throws Exception {
@@ -48,10 +50,16 @@ public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
                 .antMatchers("/**")
                 .permitAll()
                 .and()
-                .sessionManagement().maximumSessions(1).maxSessionsPreventsLogin(true);
+                .sessionManagement().maximumSessions(1).maxSessionsPreventsLogin(true).sessionRegistry(sessionRegistry);
         http.httpBasic();
     }
 
+    @Bean
+    public SessionRegistry getSessionRegistry(){
+        SessionRegistry sessionRegistry=new SessionRegistryImpl();
+        return sessionRegistry;
+    }
+
     @Bean
     public ServletListenerRegistrationBean httpSessionEventPublisher() {
         return new ServletListenerRegistrationBean(new HttpSessionEventPublisher());