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                ThinkChat2.0新版上線,更智能更精彩,支持會話、畫圖、視頻、閱讀、搜索等,送10W Token,即刻開啟你的AI之旅 廣告
                ### 創建攔截器 ``` @Component public class LoginIntercept implements HandlerInterceptor { public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { String token = request.getParameter("token"); if (StringUtils.isEmpty(token)) { response.getWriter().println("not found token"); return false; } return true; } } ``` ### 注冊攔截器 ``` @Configuration public class WebAppConfig { @Autowired private LoginIntercept loginIntercept; @Bean public WebMvcConfigurer WebMvcConfigurer() { return new WebMvcConfigurer() { public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(loginIntercept).addPathPatterns("/*"); }; }; } } ``` ``` 攔截器與過濾器區別 攔截器是AOP( Aspect-Oriented Programming)的一種實現,底層通過動態代理模式完成。 (1)攔截器是基于java的反射機制的,而過濾器是基于函數回調。 (2)攔截器不依賴于servlet容器,而過濾器依賴于servlet容器。 (3)攔截器只能對Controller請求起作用,而過濾器則可以對幾乎所有的請求起作用。 (4)在Controller的生命周期中,攔截器可以多次被調用,而過濾器只能在容器初始化時被調用一次。 過濾器應用場景:設置編碼字符、過濾銘感字符 攔截器應用場景:攔截未登陸用戶、審計日志() ```
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