SpringMvc自定义拦截器(注解)代码实例

拦截器

自定义拦截器实现HandlerInterceptor接口的三个方法。

public class MyInterceptor implements HandlerInterceptor{

@Override

public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

//拦截内容

//放行

return true;

}

@Override

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

//请求来时执行

}

@Override

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

//响应来时执行

}

}

springmvc配置文件

//将拦截器放入mvc容器中

@Bean

public MyInterceptor myInterceptor(){

return new MyInterceptor();

}

//添加拦截器,并配置拦截路径

@Override

public void addInterceptors(InterceptorRegistry registry) {

//配置拦截器

registry.addInterceptor(myInterceptor()).addPathPatterns("/**");

}

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