配置拦截器遇到swagger的问题

首先访问swagger-ui需要放行对应的路由，比如"/swagger-ui.html/**","/swagger-resources/**","webjar/**","/v2/**","doc.html","/error"等等。如

@Override
  public void addInterceptors(InterceptorRegistry registry) {
    registry
    .addInterceptor(getAuthInterceptor())
    .addPathPatterns("/**")
    .excludePathPatterns("/swagger-resources/**", "/webjars/**", "/v2/**", "/swagger-ui.html/**","doc.html","/error");
    super.addInterceptors(registry);
  }

还有对应的swagger需要的资源，使用addResourceHandlers()，如

@Override
  protected void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("swagger-ui.html","doc.html")
    .addResourceLocations("classpath:/META-INF/resources/");
    registry.addResourceHandler("/webjars/**")
    .addResourceLocations("classpath:/META-INF/resources/webjars/");
   
  }

其中遇到的问题，在webmvcConfig配置类里需要注入拦截器，不然可能会加载拦截器失败

@Bean
  public MyInterceptor getMyInterceptor() {
    return new MyInterceptor();
  }

还有是在放行规则中加入/error的路由，防止访问到404的页面报了跳转/error也会拦截，一般报错了拦截了不能拦截的url，最好断点观察，preHandle方法中，然后查看request.requestDispatcerPath的值就知道了。