SpringBoot---SpringBoot项目实现登录拦截器

雨点打透心脏的1/2处 2023-07-12 05:21 43阅读 0赞

**编写登录拦截器(类需要实现HandlerInterceptor)**

/**
     * DESC :  登录拦截器
     * @author Lonely
     *
     */
    public class AppInterceptor implements HandlerInterceptor{
    
    	@Override
    	public void afterCompletion(HttpServletRequest arg0,
    			HttpServletResponse arg1, Object arg2, Exception arg3)
    			throws Exception {}
    
    	@Override
    	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
    			Object arg2, ModelAndView arg3) throws Exception {}
    
    	
    	/**
    	 * DESC : 实现登录拦截
    	 */
    	@Override
    	public boolean preHandle(HttpServletRequest requ, HttpServletResponse resp,
    			Object arg2) throws Exception {
    		HttpSession session = requ.getSession();
    		String username = (String) session.getAttribute("username");
    		if(username == null) {
    			//重定向到登录页面
    			resp.sendRedirect("/manager/login/toLogin");
    			return false;
    		}else {
    			return true;
    		}
    	}
    
    }

**编写配置类(需要继承WebMvcConfigurerAdapter或实现WebMvcConfigurer)，注册登录拦截器。**

/**
     * DESC : 配置类
     */
    @Configuration
    public class AppConfig implements WebMvcConfigurer{
    
    	@Override
    	public void configurePathMatch(PathMatchConfigurer configurer) {}
    
    	@Override
    	public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {}
    
    	@Override
    	public void configureAsyncSupport(AsyncSupportConfigurer configurer) {}
    
    	@Override
    	public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {}
    
    	@Override
    	public void addFormatters(FormatterRegistry registry) {}
    
    	/**
    	 * DESC :  添加拦截器
    	 *         InterceptorRegistry（拦截注册）
    	 *         InterceptorRegistration（拦截登记）
    	 *         addPathPatterns（添加路径模式）
    	 *         excludePathPatterns（排除路径模式）
    	 */
    	@Override
    	public void addInterceptors(InterceptorRegistry registry) {
    		//登录拦截器
    		InterceptorRegistration interceptorRegistration = registry.addInterceptor(new AppInterceptor());
    		//添加路径模式
    		interceptorRegistration.addPathPatterns("/**");  	
    		//排除路径模式
    		interceptorRegistration.excludePathPatterns("/login/**","/email/**","/mybatis/testGetParam1");
    	}
    
    	@Override
    	public void addResourceHandlers(ResourceHandlerRegistry registry) {}
    
    	@Override
    	public void addCorsMappings(CorsRegistry registry) {}
    
    	@Override
    	public void addViewControllers(ViewControllerRegistry registry) {}
    
    	@Override
    	public void configureViewResolvers(ViewResolverRegistry registry) {}
    
    	@Override
    	public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {}
    
    	@Override
    	public void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> returnValueHandlers) {}
    
    	@Override
    	public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {}
    
    	@Override
    	public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {}
    
    	@Override
    	public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers) {}
    
    	@Override
    	public void extendHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers) {}
    
    	@Override
    	public Validator getValidator() {
    		return null;
    	}
    
    	@Override
    	public MessageCodesResolver getMessageCodesResolver() {
    		return null;
    	}
    
    }