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Spring Boot 项目的 API 接口防刷

admin 2019-05-14 396人围观 ,发现0个评论
  • 首先是写一个注解类:
  • 拦截器中完成:
  • 注册到springboot中
  • 在Controller中参加注解

阐明:使用了注解的办法进行对接口防刷的功用,十分巨大上,本文章仅供参考 一,技能关键:springboot的根本知识,redis根本操作,

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
*/
@Spring Boot 项目的 API 接口防刷Retention(RUNTIME)
@Target(METHOD)
public @interface AccessLimit {
int seconds();
int maxCount();
boolean needLogin()default true;
}

拦截器中完成:

import com.alibaba.fastjson.JSON;
import com.example.demo.action.AccessLimit;
import com.example.demo.redis.Red毒贩陶静isService;
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 {
@Autowired
private RedisService redisService;
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//判别恳求是否归于办法的恳求
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();
//假如需求登录
if(login){
//获取登录的session进行判别
//.....
key+=""+"1"; //这儿假定用户是1,项目中是动态获取的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); //这儿的CodeMsg是一个回来参数
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

import com.example.demo.ExceptionHandSpring Boot 项目的 API 接口防刷er.FangshuaInterceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotSpring Boot 项目的 API 接口防刷ation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
/**
* @Spring Boot 项目的 API 接口防刷author yhq
* @date 2018/9/10 15:58
*/
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
@Autowired
private FangshuaInterceptor interceptor;
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(interceptor);
}
}

在Controller中参加注解

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")
@ResponseBody
public Result fangshua(){
return Result.success("恳求成功");
}

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