SpringSecurity如何实现配置单个HttpSecurity

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

@Override
  protected void configure(HttpSecurity http) throws Exception {
    http.authorizeRequests()
        .antMatchers("/admin/**").hasRole("admin")
        .antMatchers("/db/**").hasAnyRole("admin","user")
        .antMatchers("/user/**").access("hasAnyRole('admin','user')")
        //剩下的其他路径请求验证之后就可以访问
        .anyRequest().authenticated()
        .and()
        .formLogin()
        .loginProcessingUrl("/dologin")
        .loginPage("/login")
        .usernameParameter("uname")
        .passwordParameter("pwd")
        .successHandler(new AuthenticationSuccessHandler() {
          @Override
          public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
            response.setContentType("application/json;charset=utf-8");
            PrintWriter pw = response.getWriter();
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("status", 200);
            map.put("msg", authentication.getPrincipal());
            pw.write(new ObjectMapper().writeValueAsString(map));
            pw.flush();
            pw.close();
          }
        })
        .failureHandler(new AuthenticationFailureHandler() {
          @Override
          public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {
            response.setContentType("application/json;charset=utf-8");
            PrintWriter pw = response.getWriter();
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("status", 401);
            if (exception instanceof LockedException) {
              map.put("msg", "账户被锁定，登陆失败！");
            } else if (exception instanceof BadCredentialsException) {
              map.put("msg", "账户或者密码错误，登陆失败！");
            } else if (exception instanceof DisabledException) {
              map.put("msg", "账户被禁用，登陆失败！");
            } else if (exception instanceof AccountExpiredException) {
              map.put("msg", "账户已过期，登陆失败！");
            } else if (exception instanceof CredentialsExpiredException) {
              map.put("msg", "密码已过期，登陆失败！");
            } else {
              map.put("msg", "登陆失败！");
            }
            pw.write(new ObjectMapper().writeValueAsString(map));
            pw.flush();
            pw.close();
          }
        })
        .permitAll()
        .and()
        .csrf().disable();
  }