springboot2.x使用interceptor之后静态资源文件加载问题

在使用spring boot 2.x 的过程中，如果使用了interceptor来做权限拦截，很有可能你会发现原来能正常请求的资源文件css,js,images等都不能用了。如果没有加这个拦截器之前，所有的都是好的。一般在开发过程中，很多人估计都是先开发功能，最后再加权限拦截（当然如果采用第三方权限框架比如shiro等，不存在这问题）, 尝试过修改application.properties增加静态资源文件地址，结果没用。最后还是在代码里面配置才生效.

@Configuration
public class AppConfig extends WebMvcConfigurationSupport {
	
	public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new ClientTokenInterceptor()).addPathPatterns("/server/**").excludePathPatterns("/login/**", "/schedule/collect/info"); 
	}
	
	@Override
    public void addViewControllers(ViewControllerRegistry registry) {
        super.addViewControllers(registry);         
        registry.addViewController("/").setViewName("forward:/login");
    } 
	/*重写这个是重点. 可以根据自己需要增加多个地址.*/
	@Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/webjars/**", "/images/**", "/css/**", "/js/**", "/fonts/**", "/font-awesome/**")
                .addResourceLocations(
                    "classpath:/META-INF/resources/webjars/",
                    "classpath:/static/mosquitto/"                   
            	);
    }

}

拦截器代码

public class ClientTokenInterceptor implements HandlerInterceptor  {
	
	private Logger logger = LoggerFactory.getLogger(this.getClass());	
	
	
    @SuppressWarnings({ "rawtypes", "unused" })
	@Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws ServletException, IOException {  
    	 //logger.info(request.getRequestURI());
    	 request.setAttribute("startTime", System.currentTimeMillis()); 
    	 Object user = request.getSession().getAttribute("loginUser");
         if (user == null) {
             request.getRequestDispatcher("/login").forward(request, response);
             return false;
         } else {
             return true;
         }        
    }     
    

	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object arg2, Exception arg3)throws Exception {
		long beginTime = (Long)request.getAttribute("startTime");
		long endTime = System.currentTimeMillis();		
		//logger.info("complete url {}, total cost:{} " ,request.getRequestURI(), (endTime - beginTime));
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3) throws Exception {
		
	}
   
}

From：一号门