说明：使用了注解的方式进行对接口防刷的功能，非常高大上，本文章仅供参考 一，技术要点：springboot的基本知识，redis基本操作，
首先是写一个注解类：
代码语言：javascript复制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;}拦截器中实现：
代码语言：javascript复制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 {
//判断请求是否属于方法的请求 if(handler instanceof HandlerMethod){
HandlerMethod hm = (HandlerMethod) handler;
//获取方法中的注解,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(); //如果需要登录 if(login){ //获取登录的session进行判断 //..... key ="" "1"; //这里假设用户是1,项目中是动态获取的userId }
//从redis中获取用户访问的次数 AccessKey ak = AccessKey.withExpire(seconds); Integer count = redisService.get(ak,key,Integer.class); if(count == null){ //第一次访问 redisService.set(ak,key,1); }else if(count < maxCount){ //加1 redisService.incr(ak,key); }else{ //超出访问次数 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(); }}注册到springboot中
代码语言：javascript复制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); }}在Controller中加入注解
代码语言：javascript复制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("请求成功"); }作者：CS打赢你 原文：https://blog.csdn.net/weixin_42533856/article/details/82593123
