update 优化缓存配置 增加spring-cache演示案例

疯狂的狮子li

2021-07-04 c26073afeb59ff898bb46a59031728fb99985a32

 ruoyi-framework/src/main/java/com/ruoyi/framework/interceptor/impl/SameUrlDataInterceptor.java

@@ -1,107 +1,133 @@
package com.ruoyi.framework.interceptor.impl;



import java.util.HashMap;

import java.util.Map;

import java.util.concurrent.TimeUnit;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Component;

import com.alibaba.fastjson.JSONObject;

import com.ruoyi.common.core.redis.RedisCache;

import com.ruoyi.common.filter.RepeatedlyRequestWrapper;

import com.ruoyi.common.utils.StringUtils;

import com.ruoyi.common.utils.http.HttpHelper;

import com.ruoyi.framework.interceptor.RepeatSubmitInterceptor;



/**

 * 判断请求url和数据是否和上一次相同，

 * 如果和上次相同，则是重复提交表单。 有效时间为10秒内。

 * 
 * @author ruoyi

 */

@Component

public class SameUrlDataInterceptor extends RepeatSubmitInterceptor

{

    public final String REPEAT_PARAMS = "repeatParams";



    public final String REPEAT_TIME = "repeatTime";



    public final String CACHE_REPEAT_KEY = "repeatData";



    @Autowired

    private RedisCache redisCache;



    /**

     * 间隔时间，单位:秒 默认10秒

     * 
     * 两次相同参数的请求，如果间隔时间大于该参数，系统不会认定为重复提交的数据

     */

    private int intervalTime = 10;



    public void setIntervalTime(int intervalTime)

    {

        this.intervalTime = intervalTime;

    }



    @SuppressWarnings("unchecked")

    @Override

    public boolean isRepeatSubmit(HttpServletRequest request)

    {

        RepeatedlyRequestWrapper repeatedlyRequest = (RepeatedlyRequestWrapper) request;

        String nowParams = HttpHelper.getBodyString(repeatedlyRequest);



        // body参数为空，获取Parameter的数据

        if (StringUtils.isEmpty(nowParams))

        {

            nowParams = JSONObject.toJSONString(request.getParameterMap());

        }

        Map<String, Object> nowDataMap = new HashMap<String, Object>();

        nowDataMap.put(REPEAT_PARAMS, nowParams);

        nowDataMap.put(REPEAT_TIME, System.currentTimeMillis());



        // 请求地址（作为存放cache的key值）

        String url = request.getRequestURI();



        Object sessionObj = redisCache.getCacheObject(CACHE_REPEAT_KEY);

        if (sessionObj != null)

        {

            Map<String, Object> sessionMap = (Map<String, Object>) sessionObj;

            if (sessionMap.containsKey(url))

            {

                Map<String, Object> preDataMap = (Map<String, Object>) sessionMap.get(url);

                if (compareParams(nowDataMap, preDataMap) && compareTime(nowDataMap, preDataMap))

                {

                    return true;

                }

            }

        }

        Map<String, Object> cacheMap = new HashMap<String, Object>();

        cacheMap.put(url, nowDataMap);

        redisCache.setCacheObject(CACHE_REPEAT_KEY, cacheMap, intervalTime, TimeUnit.SECONDS);

        return false;

    }



    /**

     * 判断参数是否相同

     */

    private boolean compareParams(Map<String, Object> nowMap, Map<String, Object> preMap)

    {

        String nowParams = (String) nowMap.get(REPEAT_PARAMS);

        String preParams = (String) preMap.get(REPEAT_PARAMS);

        return nowParams.equals(preParams);

    }



    /**

     * 判断两次间隔时间

     */

    private boolean compareTime(Map<String, Object> nowMap, Map<String, Object> preMap)

    {

        long time1 = (Long) nowMap.get(REPEAT_TIME);

        long time2 = (Long) preMap.get(REPEAT_TIME);

        if ((time1 - time2) < (this.intervalTime * 1000))

        {

            return true;

        }

        return false;

    }

}

package com.ruoyi.framework.interceptor.impl;

import cn.hutool.core.io.IoUtil;
import cn.hutool.core.lang.Validator;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.filter.RepeatedlyRequestWrapper;
import com.ruoyi.common.utils.JsonUtils;
import com.ruoyi.framework.interceptor.RepeatSubmitInterceptor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * 判断请求url和数据是否和上一次相同，
 * 如果和上次相同，则是重复提交表单。 有效时间为10秒内。
 *
 * @author ruoyi
 */
@Slf4j
@Component
public class SameUrlDataInterceptor extends RepeatSubmitInterceptor
{
    public final String REPEAT_PARAMS = "repeatParams";

    public final String REPEAT_TIME = "repeatTime";

    // 令牌自定义标识
    @Value("${token.header}")
    private String header;

    @Autowired
    private RedisCache redisCache;

    /**
     * 间隔时间，单位:秒 默认10秒
     *
     * 两次相同参数的请求，如果间隔时间大于该参数，系统不会认定为重复提交的数据
     */
    private int intervalTime = 10;

    public void setIntervalTime(int intervalTime)
    {
        this.intervalTime = intervalTime;
    }

    @SuppressWarnings("unchecked")
    @Override
    public boolean isRepeatSubmit(HttpServletRequest request)
    {
        String nowParams = "";
        if (request instanceof RepeatedlyRequestWrapper)
        {
            RepeatedlyRequestWrapper repeatedlyRequest = (RepeatedlyRequestWrapper) request;
         try {
            nowParams = IoUtil.readUtf8(repeatedlyRequest.getInputStream());
         } catch (IOException e) {
            log.warn("读取流出现问题！");
         }
      }

        // body参数为空，获取Parameter的数据
        if (Validator.isEmpty(nowParams))
        {
            nowParams = JsonUtils.toJsonString(request.getParameterMap());
        }
        Map<String, Object> nowDataMap = new HashMap<String, Object>();
        nowDataMap.put(REPEAT_PARAMS, nowParams);
        nowDataMap.put(REPEAT_TIME, System.currentTimeMillis());

        // 请求地址（作为存放cache的key值）
        String url = request.getRequestURI();

        // 唯一值（没有消息头则使用请求地址）
        String submitKey = request.getHeader(header);
        if (Validator.isEmpty(submitKey))
        {
            submitKey = url;
        }

        // 唯一标识（指定key + 消息头）
        String cacheRepeatKey = Constants.REPEAT_SUBMIT_KEY + submitKey;

        Object sessionObj = redisCache.getCacheObject(cacheRepeatKey);
        if (sessionObj != null)
        {
            Map<String, Object> sessionMap = (Map<String, Object>) sessionObj;
            if (sessionMap.containsKey(url))
            {
                Map<String, Object> preDataMap = (Map<String, Object>) sessionMap.get(url);
                if (compareParams(nowDataMap, preDataMap) && compareTime(nowDataMap, preDataMap))
                {
                    return true;
                }
            }
        }
        Map<String, Object> cacheMap = new HashMap<String, Object>();
        cacheMap.put(url, nowDataMap);
        redisCache.setCacheObject(cacheRepeatKey, cacheMap, intervalTime, TimeUnit.SECONDS);
        return false;
    }

    /**
     * 判断参数是否相同
     */
    private boolean compareParams(Map<String, Object> nowMap, Map<String, Object> preMap)
    {
        String nowParams = (String) nowMap.get(REPEAT_PARAMS);
        String preParams = (String) preMap.get(REPEAT_PARAMS);
        return nowParams.equals(preParams);
    }

    /**
     * 判断两次间隔时间
     */
    private boolean compareTime(Map<String, Object> nowMap, Map<String, Object> preMap)
    {
        long time1 = (Long) nowMap.get(REPEAT_TIME);
        long time2 = (Long) preMap.get(REPEAT_TIME);
        if ((time1 - time2) < (this.intervalTime * 1000))
        {
            return true;
        }
        return false;
    }
}