springboot配置攔截器不能放行靜態資源

新建一個攔截器類，實現 org.springframework.web.servlet.HandlerInterceptor 接口，重寫preHandle、postHandle、afterCompletion方法分別是處理前、處理中、處理后。

public class RequestInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("目標方法執行前！");
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("目標方法執行時！");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("目標方法執行后！");
    }
}

在配置類中添加該攔截器，如下：

方式一：根據后綴放行，這樣要是文件類型很多的話是不是就很麻煩呢

@Configuration
public class WebConfig implements WebMvcConfigurer {
    
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //注冊TestInterceptor攔截器
        InterceptorRegistration registration = registry.addInterceptor(new RequestInterceptor());
        registration.addPathPatterns("/**");                      //所有路徑都被攔截
        registration.excludePathPatterns(                         //添加不攔截路徑            
                                         "/**/*.html",            
                                         "/**/*.js",              //js靜態資源
                                         "/**/*.css",             //css靜態資源
                                         "/**/*.woff",
                                         "/**/*.ttf"
                                         );    
    }
}

 

方式二：有個問題就是：靜態資源是默認static下的，請求路徑中沒有static,所以放行不成功

@Configuration
public class WebConfig implements WebMvcConfigurer {
    
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
       
    registry.addInterceptor(new     RequestInterceptor()).addPathPatterns("/**").excludePathPatterns("/toLogin","/login","/logout","/static/**");
}

方式三：就是直接配置攔截所有，然后在攔截器中對url篩選，只要是請求的靜態資源就直接返回true,但是感覺做了一些無用功

@Configuration
public class WebConfig implements WebMvcConfigurer {
    
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
    　　registration.addInterceptor(new RequestInterceptor()).addPathPatterns("/**");
　　}
}

 //攔截器中

 @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        boolean check = false;
        StringBuffer url = request.getRequestURL();
       if(isStatic(url)){
           check = true;
       }else{
           Object auth = request.getSession().getAttribute("auth");
           if(auth == null){
               String scheme = request.getScheme();
               String serverName = request.getServerName();
               int port = request.getServerPort();
               String context = request.getContextPath();
               String path = scheme+"://"+serverName+":"+port+context+"/";
               String str = "<script language='javascript'>alert('登錄狀態過期，請重新登陸!');"
                       +"if (window != top){top.location.href = '"+ path +"login';}location.href='"+path+"login'"
                       +"</script>";
               response.setContentType("text/html;charset=UTF-8");// 解決中文亂碼
               try {
                   PrintWriter writer = response.getWriter();
                   writer.write(str);
                   writer.flush();
                   writer.close();
               } catch (Exception e) {e.printStackTrace();}
           }else{
               check = true;
           }
       }
       return  check;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
　　
    public boolean isStatic(StringBuffer url) {
        boolean result = false;
        String[] arr = { //定義一個需要放行的數組
                "/login",
                "/css",
                "/images",//圖片
                "/js" //js腳本
        };
        for (String a : arr) {
            if (url.indexOf(a) != -1) {
                result = true;
            }
        }
        return result;
    }

 

//excludePathPatterns放行是？ 請求路徑中包含你所配置的就ok,還是你請求的是這個目錄下的資源就可以呢？