springboot定义拦截器

最新推荐文章于 2021-12-29 18:05:02 发布

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最新推荐文章于 2021-12-29 18:05:02 发布

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分类专栏： springboot 文章标签： java

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springboot定义拦截器

首先定义一个拦截器类实现 HandlerInterceptor
里面的三个方法，分别是执行前运行，执行时运行，执行后运行的。

imple`public class MyInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
System.out.println(“preHandle”);
return true;
}

@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
    System.out.println("postHandle");
}

@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
    System.out.println("afterCompletion");
}

然后定义一个配置类实现WebMvcConfigurer
注入上面定义的类MyInterceptor，然后配置拦截路径。

@Configuration
public class Config implements WebMvcConfigurer {
   
   @Bean
   MyInterceptor myInterceptor(){
       return new MyInterceptor();
   }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(myInterceptor()).addPathPatterns("/**");
    }
}