fix logout issue with spring security 5

apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/spi/configuration/AuthConfiguration.java

@@ -46,6 +46,7 @@ import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.security.crypto.password.LdapShaPasswordEncoder;
 import org.springframework.security.provisioning.JdbcUserDetailsManager;
 import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;
+import org.springframework.security.web.authentication.logout.SimpleUrlLogoutSuccessHandler;
 
 
 @Configuration
@@ -270,8 +271,10 @@ public class AuthConfiguration {
           .antMatchers("/openapi/**", "/vendor/**", "/styles/**", "/scripts/**", "/views/**", "/img/**").permitAll()
           .antMatchers("/**").hasAnyRole(USER_ROLE);
       http.formLogin().loginPage("/signin").permitAll().failureUrl("/signin?#/error").and().httpBasic();
+      SimpleUrlLogoutSuccessHandler urlLogoutHandler = new SimpleUrlLogoutSuccessHandler();
+      urlLogoutHandler.setDefaultTargetUrl("/signin?#/logout");
       http.logout().logoutUrl("/user/logout").invalidateHttpSession(true).clearAuthentication(true)
-          .logoutSuccessUrl("/signin?#/logout");
+          .logoutSuccessHandler(urlLogoutHandler);
       http.exceptionHandling().authenticationEntryPoint(new LoginUrlAuthenticationEntryPoint("/signin"));
     }