• python按年份统计文件数量


    import os,sys,time
    
    maps = {}
    
    def count(key):
        k = str(key)
        if maps.has_key(k) :
            val = maps[k]
            maps[k]=val+1
        else:
            maps[k]=1
    
    
    def listDir(rootDir):
        list_dirs = os.walk(rootDir)
        year_sec = 60*60*24*365
        for root, dirs, files in list_dirs:
            for d in dirs:
               year=int(os.path.getmtime(os.path.join(root, d))/year_sec+1970)
               count(year)
            for f in files:
               year=int(os.path.getctime(os.path.join(root, f))/year_sec+1970)
               count(year)
        print maps
    
    listDir(sys.argv[1])
    package com.czp.opensource;
    
    import java.util.concurrent.ConcurrentHashMap;
    
    import redis.clients.jedis.Client;
    import redis.clients.jedis.Jedis;
    
    /**
     * Function:分布式Hashmap支持在线扩容<br>
     *
     * Date :2015年12月9日 <br>
     * Author :coder_czp@126.com<br>
     * Copyright (c) 2015,coder_czp@126.com All Rights Reserved.
     */
    
    public class DistributedMap {
    
        private static final int BASE = 10000;
        private static final String SPLIT = "X";
        private static final String SIZE = "SIZE";
        private ConcurrentHashMap<Jedis, Integer> jedisArr = new ConcurrentHashMap<Jedis, Integer>();
    
        /**
         * 格式:[host:port:pwd,...]
         * 
         * @param redisGroup
         */
        public DistributedMap(String[] redisGroup) {
            for (String string : redisGroup) {
                String[] arr = string.split(":");
                addRedisServer(arr[0], Integer.valueOf(arr[1]), arr[2]);
            }
        }
    
        /**
         * 添加服务,如果有同名ip和端口,则返回false
         * 
         * @param host
         * @param port
         * @param pwd
         * @return
         */
        public synchronized boolean addRedisServer(String host, int port, String pwd) {
            if (getRedisServer(host, port) != null) {
                return false;
            }
    
            Jedis jedis = new Jedis(host, port);
            if (pwd != null && pwd.trim().length() > 0)
                jedis.auth(pwd.trim());
            int redisKeyCount = getRedisKeyCount(jedis);
            jedisArr.put(jedis, redisKeyCount);
            return true;
    
        }
    
        /**
         * 返回key个数
         * 
         * @return
         */
        public long size() {
            long size = 0;
            for (Jedis jedis : jedisArr.keySet()) {
                size += jedisArr.get(jedis);
            }
            return size;
        }
    
        /**
         * 是否包含某个key
         * 
         * @param key
         * @return
         */
        public boolean containsKey(String key) {
            for (Jedis jedis : jedisArr.keySet()) {
                if (jedis.exists(key))
                    return true;
            }
            return false;
        }
    
        /**
         * 获取key对应的value
         * 
         * @param key
         *            必须是:/encode(host[h32],port[l32])/port/key
         * @return
         */
        public String get(String key) {
            Jedis jedis = getRedisFromKey(key);
            return jedis == null ? null : jedis.get(key);
        }
    
        /**
         * 添加key-value,会将key包装为/encode(host,port)/key再保存
         * 
         * @param key
         * @param value
         * @return /encode(host[h23],port[l32])/key
         */
        public String put(String key, String value) {
    
            if (!key.startsWith("/"))
                key = "/".concat(key);
    
            Jedis redis = chooseRedisServer(key);
            Client client = redis.getClient();
            String prefex = endcodeIpPort(client.getHost(), client.getPort());
            String wrapKey = String.format("/%s%s", prefex, key);
            redis.set(wrapKey, value);
            comareAndSetRedisSize(redis);
            return wrapKey;
        }
    
        /**
         * 选择Redis服务器,选择存储最少的服务
         * 
         * @param key
         * @return
         */
        private Jedis chooseRedisServer(String key) {
            int minSize = -1;
            Jedis jedis = null;
            for (Jedis tmp : jedisArr.keySet()) {
                if (minSize == -1) {
                    minSize = jedisArr.get(tmp);
                    jedis = tmp;
                } else if (jedisArr.get(tmp) < minSize) {
                    jedis = tmp;
                }
            }
            return jedis;
        }
    
        /**
         * 删除key-value
         * 
         * @param key
         * @return
         */
        public boolean remove(String key) {
            Jedis redis = getRedisFromKey(key);
            if (redis == null)
                return false;
            redis.del(key);
            return true;
        }
    
        /**
         * 关闭所有连接,释放资源
         */
        public synchronized void release() {
            for (Jedis tmp : jedisArr.keySet()) {
                tmp.quit();
            }
            jedisArr.clear();
        }
    
        /**
         * 更新redis的size值
         * 
         * @param redis
         */
        private synchronized void comareAndSetRedisSize(Jedis redis) {
            int oldSize = getRedisKeyCount(redis);
            int curSize = jedisArr.get(redis);
            int max = Math.max(oldSize, curSize) + 1;
            redis.set(SIZE, String.valueOf(max));
            jedisArr.put(redis, max);
        }
    
        private synchronized int getRedisKeyCount(Jedis jedis) {
            String ssize = jedis.get(SIZE);
            if (ssize == null)
                return 0;
            return Integer.valueOf(ssize);
        }
    
        /**
         * 选择匹配的redis
         * 
         * @param ip
         * @param port
         * @return
         */
        private Jedis getRedisServer(String redisIp, int port) {
            for (Jedis jedis : jedisArr.keySet()) {
                Client client = jedis.getClient();
                String host = client.getHost();
                int portx = client.getPort();
                if (host.equals(redisIp) && portx == port)
                    return jedis;
            }
            return null;
        }
    
        /**
         * key:endcode[ip,port]/key
         * 
         * @param key
         * @return
         */
        private Jedis getRedisFromKey(String key) {
            String[] arr = key.split("/");
            String[] ipPort = decodeIpPort(arr[1]);
            Jedis jedis = getRedisServer(ipPort[0], Integer.valueOf(ipPort[1]));
            return jedis;
        }
    
        /**
         * @param string
         * @return
         */
        private static String[] decodeIpPort(String string) {
            String[] arr = string.split(SPLIT);
            char frist = arr[0].charAt(0);
            int ipVal = Integer.valueOf(arr[0].substring(1));
            if (frist == 'J') {
                ipVal = 0 - ipVal;
            }
            String port = String.valueOf(Integer.valueOf(arr[1]) ^ BASE);
            String ip = String.valueOf(PubTools.intToIP(ipVal));
            return new String[] { ip, port };
        }
    
        /**
         * 将ip转换为int 和port合并成int后用base64编码
         * 
         * @param ipstr
         * @param port
         * @return
         */
        private static String endcodeIpPort(String ipstr, int port) {
            int ipToInt = PubTools.ipToInt(ipstr);
            String ip = null;
            if (ipToInt < 0) {
                ip = "J".concat(String.valueOf(0 - ipToInt));
            } else {
                ip = "M".concat(String.valueOf(ipToInt));
            }
            return String.valueOf(ip).concat(SPLIT)
                    .concat(String.valueOf(port ^ BASE));
        }
    
        public static void main(String[] args) {
            Jedis edis = new Jedis("192.168.20.78");
            System.out.println(edis.get("mset2"));
            edis.quit();
        }
    }
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  • 原文地址:https://www.cnblogs.com/czpblog/p/5038336.html
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