HandlerInterceptor
public class HandlerInterceptorDemo implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
return false;
}
@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 {
}
}
WebRequestInterceptor
public class WebRequestInterceptorDemo implements WebRequestInterceptor {
@Override
public void preHandle(WebRequest webRequest) throws Exception {
}
@Override
public void postHandle(WebRequest webRequest, ModelMap modelMap) throws Exception {
}
@Override
public void afterCompletion(WebRequest webRequest, Exception e) throws Exception {
}
}
说明:interceptor是在请求在适配之后,对具体的handler方法前后的业务处理。
interceptor并不会拦截到所有request,它只有在handlerMapping找到对应的映射之后才会起作用。
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