遍历key

1、

MemcachedClient client = XMemcachedUtil.getInstance();
InetSocketAddress socketAddress = AddrUtil.getOneAddress(remote_url);
		KeyIterator it = client.getKeyIterator(socketAddress);

2、

package com.danga.MemCached.test;

import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.Map;

import com.danga.MemCached.MemCachedClient;
import com.danga.MemCached.SockIOPool;

public class CacheKeyListTest {

	static MemCachedClient mc = new MemCachedClient();
    static {
        String[] servers =
        {
          "127.0.0.1:11211"
        };
        SockIOPool pool = SockIOPool.getInstance();
        pool.setServers( servers );
        pool.setInitConn( 2 );
        pool.setMinConn( 2 );
        pool.setMaxConn( 5 );
        pool.setMaxIdle( 1000 * 60 * 60 * 6 );

        pool.setMaintSleep( 30 );
        pool.setSocketTO( 3000 );
        pool.initialize();
    }
    public static void main(String[] args) {
    	CacheKeyListTest test = new CacheKeyListTest();
    	test.getKeys();
    }
    public void getKeys(){
    	
        System.out.println(mc.stats());
        System.out.println(" -- end stats --");
        ArrayList keys = new ArrayList();
        //取得所有 memcached server ,可能有多台 server
        Map slabs = mc.statsItems();
        System.out.println(slabs);
        System.out.println(" -- end statsItems --");
        System.out.println("");
        //key= ip:port, ex: 192.168.1.2:11211,192.168.1.2:11212...
        Iterator itemsItr = slabs.keySet().iterator();
        // 以server IP key值去遍历,可能有多台 server
        while (itemsItr.hasNext()) { 
            String serverInfo = itemsItr.next().toString();
            System.out.println("serverInfo>>"+serverInfo);
            // 取得这个server的各种 status [itemname:number:field=value]
            Map itemNames = (Map) slabs.get(serverInfo);
            System.out.println("itemNames>>"+itemNames);
            Iterator itemNameItr = itemNames.keySet().iterator();
            // 以status key值去遍历
            while (itemNameItr.hasNext()) {
                String itemName = itemNameItr.next().toString();
                System.out.println("itemName>>"+itemName);
                // 拆解status 各位
                // itemAtt[0] = itemname参数
                // itemAtt[1] = CacheDump的参数
                // itemAtt[2] = field:number or age
                String[] itemAtt = itemName.split(":");
                // 要取得field为number的CacheDump参数
                if (itemAtt[2].startsWith("number")) {
                    // 以status取到的,取得cachedDump Map...
                    // ServerIP<cachekey<byte size;unix timestamp>>
                    Map cachedDump = mc.statsCacheDump(Integer.parseInt(itemAtt[1]),0);
                    System.out.println("cachedDump>>"+cachedDump);
                    Iterator itr = cachedDump.keySet().iterator();
                    // 以server IP key值去遍历,可能有多台 server
                    int i = 0;
                    while (itr.hasNext()) {
                        // key=ip:port
                        String serverInfo2 = itr.next().toString();
                        // 取得Cached Key Map...<-终于,這才是我要的Key集合
                        Map items = (Map) cachedDump.get(serverInfo2);
                        System.out.println("items>>>"+items);
                        Iterator keyItr = items.keySet().iterator();
                        //以Cached Key 去遍历,取key出來,或是要取size,unix timestamp 也有
                        while (keyItr.hasNext()) {
                            String key = keyItr.next().toString();
                            String memKey = key;
                            i++;
                            try{
                                key = URLDecoder.decode(key,"UTF-8");
                                String value = ((String)items.get(memKey));
                                value = value.substring(value.indexOf(";")+2,value.indexOf(" s"));
                                Date date = new Date();
                                date.setTime(Long.valueOf(value+"000"));
                                System.out.println(key+" --- ");
                                System.out.println(date+" --- ");
                            }
                            
                            catch(Exception ex)
                            {
                                System.out.println("error:"+ex.getMessage());
                            }
                        }
                    }
                }
            }
        }
    }

}