spring自定义注解，防止页面重复提交

注解：@Target(ElementType.METHOD)@Retention(RetentionPolicy.RUNTIME)@Documentedpublic @interface DuplicateSubmitToken { boolean bindToken() default true; boolean unbindToken() default true;}拦截器：package com.auspiciousclouds.support.spring.mvc.interceptor;import java.lang.reflect.Method;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;import org.springframework.web.bind.annotation.support.HandlerMethodResolver;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;import com.auspiciousclouds.config.Configuration;import com.auspiciousclouds.kit.UUIDKit;import com.auspiciousclouds.model.domain.UserDomain;import com.auspiciousclouds.support.spring.mvc.annotation.DuplicateSubmitToken;public class DuplicateSubmitTokenInterceptor  extends HandlerInterceptorAdapter implements ApplicationContextAware{private  ApplicationContext applicationContext ;@Overridepublic boolean preHandle(HttpServletRequest request,HttpServletResponse response, Object handler) throws Exception {UserDomain sessionUser = UserDomain.get( request); if (sessionUser != null) { Method method = org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.class.getDeclaredMethod("getMethodResolver", Object.class);  method.setAccessible(true);     HandlerMethodResolver resolver = (HandlerMethodResolver)method.invoke(applicationContext.getBean("annotationMethodHandlerAdapter"), handler);    Method resolveHandlerMethod = resolver.getClass().getMethod("resolveHandlerMethod", HttpServletRequest.class);     resolveHandlerMethod.setAccessible(true);     Method executorMethod = (Method)resolveHandlerMethod.invoke(resolver, request);             DuplicateSubmitToken annotation = executorMethod.getAnnotation(DuplicateSubmitToken.class);            if (annotation != null) {                boolean bindSession = annotation.bindToken();                if (bindSession) {                    request.getSession(false).setAttribute(Configuration.SystemConstant.DUPLICATETOKEN, UUIDKit.getUUID());                }                boolean unbindSession = annotation.unbindToken();                if (unbindSession) {                    if (isDuplicateSubmitToken(request)) {                    System.out.println("--------------------------------------------------------------------------DuplicateSubmitTokenInterceptor-----------------------------------------------------------------------------");                        return false;                    }                    request.getSession(false).removeAttribute(Configuration.SystemConstant.DUPLICATETOKEN);                }            }        }        return true;}/** *  * isDuplicateSubmitToken 判断是否是重复提交 *   * @param request * @return  * boolean * @exception  * @since  1.0.0 */ private boolean isDuplicateSubmitToken(HttpServletRequest request) {        String serverToken = (String) request.getSession(false).getAttribute(Configuration.SystemConstant.DUPLICATETOKEN);        if (serverToken == null) {            return true;        }        String clinetToken = request.getParameter(Configuration.SystemConstant.DUPLICATETOKEN);        if (clinetToken == null) {            return true;        }        if (!serverToken.equals(clinetToken)) {            return true;        }        return false;    }@Overridepublic void postHandle(HttpServletRequest request,HttpServletResponse response, Object handler,ModelAndView modelAndView) throws Exception {super.postHandle(request, response, handler, modelAndView);}@Overridepublic void afterCompletion(HttpServletRequest request,HttpServletResponse response, Object handler, Exception ex)throws Exception {super.afterCompletion(request, response, handler, ex);}@Overridepublic void setApplicationContext(ApplicationContext applicationContext)throws BeansException {this.applicationContext = applicationContext;}}使用 ：@RequestMapping("/home")@DuplicateSubmitTokenpublic String home(ModelMap model){}