阐明:应用了注解的形式进行对接口防刷的性能,十分高大上,本文章仅供参考。

技术要点:springboot的基本知识,redis基本操作。

首先是写一个注解类:

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;}

接着就是在Interceptor拦截器中实现:

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 */  @Componentpublic class FangshuaInterceptor extends HandlerInterceptorAdapter {     @Autowired    private RedisService redisService;     @Override    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {         //判断申请是否属于办法的申请        if(handler instanceof HandlerMethod){             HandlerMethod hm = (HandlerMethod) handler;             //获取办法中的注解,看是否有该注解            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();            //如果须要登录            if(login){                //获取登录的session进行判断                //.....                key+=""+"1";  //这里假如用户是1,我的项目中是动静获取的userId            }             //从redis中获取用户拜访的次数            AccessKey ak = AccessKey.withExpire(seconds);            Integer count = redisService.get(ak,key,Integer.class);            if(count == null){                //第一次拜访                redisService.set(ak,key,1);            }else if(count < maxCount){                //加1                redisService.incr(ak,key);            }else{                //超出拜访次数                render(response,CodeMsg.ACCESS_LIMIT_REACHED); //这里的CodeMsg是一个返回参数                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();    }}

再把Interceptor注册到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 */@Configurationpublic class WebConfig extends WebMvcConfigurerAdapter {     @Autowired    private FangshuaInterceptor interceptor;      @Override    public void addInterceptors(InterceptorRegistry registry) {        registry.addInterceptor(interceptor);    }}

接着在Controller中退出注解

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 */ @Controllerpublic class FangshuaController {     @AccessLimit(seconds=5, maxCount=5, needLogin=true)    @RequestMapping("/fangshua")    @ResponseBody    public Result<String> fangshua(){          return Result.success("申请胜利");     }    }    

本文有参考其余视频的教学,心愿能够帮忙更多酷爱it行业的人,

作者:CS打赢你\
本文链接:https://blog.csdn.net/weixin_...\
版权申明:本文为博主原创文章,遵循 CC 4.0 BY-SA 版权协定,转载请附上原文出处链接和本申明。

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