說明：使用了注解的方式進(jìn)行對接口防刷的功能，非常高大上，本文章僅供參考 一，技術(shù)要點(diǎn)：springboot的基本知識，redis基本操作，

首先是寫一個(gè)注解類：

import?java.lang.annotation.Retention; import?java.lang.annotation.Target;import?static?java.lang.annotation.ElementType.METHOD; import?static?java.lang.annotation.RetentionPolicy.RUNTIME;/***?@author?yhq*?@date?2018/9/10?15:52*/@Retention(RUNTIME) @Target(METHOD) public?@interface?AccessLimit?{int?seconds();int?maxCount();boolean?needLogin()default?true; }

攔截器中實(shí)現(xiàn)：

import?com.alibaba.fastjson.JSON; import?com.example.demo.action.AccessLimit; import?com.example.demo.redis.RedisService; import?com.example.demo.result.CodeMsg; import?com.example.demo.result.Result; import?org.springframework.beans.factory.annotation.Autowired; import?org.springframework.stereotype.Component; import?org.springframework.web.method.HandlerMethod; import?org.springframework.web.servlet.handler.HandlerInterceptorAdapter;import?javax.servlet.http.HttpServletRequest; import?javax.servlet.http.HttpServletResponse; import?java.io.OutputStream;/***?@author?yhq*?@date?2018/9/10?16:05*/@Component public?class?FangshuaInterceptor?extends?HandlerInterceptorAdapter?{@Autowiredprivate?RedisService?redisService;@Overridepublic?boolean?preHandle(HttpServletRequest?request,?HttpServletResponse?response,?Object?handler)?throws?Exception?{//判斷請求是否屬于方法的請求if(handler?instanceof?HandlerMethod){HandlerMethod?hm?=?(HandlerMethod)?handler;//獲取方法中的注解,看是否有該注解AccessLimit?accessLimit?=?hm.getMethodAnnotation(AccessLimit.class);if(accessLimit?==?null){return?true;}int?seconds?=?accessLimit.seconds();int?maxCount?=?accessLimit.maxCount();boolean?login?=?accessLimit.needLogin();String?key?=?request.getRequestURI();//如果需要登錄if(login){//獲取登錄的session進(jìn)行判斷//.....key+=""+"1";??//這里假設(shè)用戶是1,項(xiàng)目中是動態(tài)獲取的userId}//從redis中獲取用戶訪問的次數(shù)AccessKey?ak?=?AccessKey.withExpire(seconds);Integer?count?=?redisService.get(ak,key,Integer.class);if(count?==?null){//第一次訪問redisService.set(ak,key,1);}else?if(count?<?maxCount){//加1redisService.incr(ak,key);}else{//超出訪問次數(shù)render(response,CodeMsg.ACCESS_LIMIT_REACHED);?//這里的CodeMsg是一個(gè)返回參數(shù)return?false;}}return?true;}private?void?render(HttpServletResponse?response,?CodeMsg?cm)throws?Exception?{response.setContentType("application/json;charset=UTF-8");OutputStream?out?=?response.getOutputStream();String?str??=?JSON.toJSONString(Result.error(cm));out.write(str.getBytes("UTF-8"));out.flush();out.close();} }

注冊到springboot中

import?com.example.demo.ExceptionHander.FangshuaInterceptor; import?org.springframework.beans.factory.annotation.Autowired; import?org.springframework.context.annotation.Configuration; import?org.springframework.web.servlet.config.annotation.InterceptorRegistry; import?org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;/***?@author?yhq*?@date?2018/9/10?15:58*/ @Configuration public?class?WebConfig?extends?WebMvcConfigurerAdapter?{@Autowiredprivate?FangshuaInterceptor?interceptor;@Overridepublic?void?addInterceptors(InterceptorRegistry?registry)?{registry.addInterceptor(interceptor);} }

在Controller中加入注解

import?com.example.demo.result.Result; import?org.springframework.stereotype.Controller; import?org.springframework.web.bind.annotation.RequestMapping; import?org.springframework.web.bind.annotation.ResponseBody;/***?@author?yhq*?@date?2018/9/10?15:49*/@Controller public?class?FangshuaController?{@AccessLimit(seconds=5,?maxCount=5,?needLogin=true)@RequestMapping("/fangshua")@ResponseBodypublic?Result<String>?fangshua(){return?Result.success("請求成功");}

?

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