解决nginx代理 多一层之后的 //问题。

jjt-framework/src/main/java/com/jjt/framework/config/SecurityConfig.java

@@ -17,6 +17,8 @@ import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
 import org.springframework.security.web.authentication.logout.LogoutFilter;
+import org.springframework.security.web.firewall.HttpFirewall;
+import org.springframework.security.web.firewall.StrictHttpFirewall;
 import org.springframework.web.filter.CorsFilter;
 
 import javax.annotation.Resource;
@@ -141,4 +143,14 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
     protected void configure(AuthenticationManagerBuilder auth) throws Exception {
         auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
     }
+
+    /**
+     * 支持"//"
+     */
+    @Bean
+    public HttpFirewall httpFirewall() {
+        StrictHttpFirewall firewall = new StrictHttpFirewall();
+        firewall.setAllowUrlEncodedDoubleSlash(true);
+        return firewall;
+    }
 }