首先,一张图可以清晰的表示之间的关系
Filter的运行是依赖于Servlet容器的,与spring框架没有关系,init与destory只在servletContext阶段执行
而HandlerInterceptor是基于于WebApplicationContext,在WebApplicationContext内的controller可以多次调用
即ServletContext大于WebApplicationContext
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| public interface Filter {
public void init(FilterConfig filterConfig) throws ServletException;
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException;
public void destroy();
}
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| public interface HandlerInterceptor {
boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception;
void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView)
throws Exception;
void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception;
}
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