Redis中sentinel集群的搭建和Jedis測試圖文教程[二]

RedisConnector.java為Redis操作封裝類

import java.util.HashSet;
import java.util.Set;

import org.apache.commons.pool2.impl.GenericObjectPoolConfig;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisSentinelPool;
import Albert.CfgFileReader.CfgFileReader;

public class RedisConnector {

    static public HashSet<String> REDIS_SERVER = new HashSet<String>();
    static public int REDIS_NUMBERS = 1;
    static public String REDIS_MASTER = "master";
    static public String REDIS_PASSWORD = "";
    static public int REDIS_TIME_OUT = 1000;
    static public int REDIS_DATABASE = 0;
    static public JedisSentinelPool jedisSentinelPool = null;
    static public Object syncObj = new Object();

    static public void Start() {
        synchronized (syncObj) {
            CfgFileReader cfg = null;

            try {
                cfg = new CfgFileReader("XServer.ini");

                // [Redis]
                REDIS_NUMBERS = cfg.getInteger("REDIS_NUMBERS", 1);
                REDIS_MASTER = cfg.getString("REDIS_MASTER", "master");
                REDIS_PASSWORD = cfg.getString("REDIS_PASSWORD", "master");
                REDIS_TIME_OUT = cfg.getInteger("REDIS_TIME_OUT", 5000);
                REDIS_DATABASE = cfg.getInteger("REDIS_DATABASE", 0);

                if (REDIS_PASSWORD.length() == 0)
                    REDIS_PASSWORD = null;

                for (int i = 0; i < REDIS_NUMBERS; ++i) {
                    String key = String.format("REDIS_SERVER_%d", i + 1);
                    String value = cfg.getString(key, "");
                    value = value.replace("tcp://", "");
                    value = value.replace("/", "");
                    value = value.toString().trim();

                    if (value.length() > 0) {
                        REDIS_SERVER.add(value);
                    }
                }

                if (jedisSentinelPool != null) {
                    jedisSentinelPool.destroy();
                    jedisSentinelPool = null;
                }

                System.out.println("Creating JedisSentinelPool...");

                jedisSentinelPool = new JedisSentinelPool(REDIS_MASTER,
                        REDIS_SERVER, new GenericObjectPoolConfig(),
                        REDIS_TIME_OUT, REDIS_PASSWORD, REDIS_DATABASE);

                System.out.println("Create JedisSentinelPool Success");
            } catch (Exception ex) {
                ex.printStackTrace();
            } finally {
                if (cfg != null) {
                    cfg.close();
                    cfg = null;
                }
            }
        }
    }

    static public boolean Set(String key, String value) {
        if (jedisSentinelPool == null)
            return false;

        synchronized (syncObj) {
            Jedis jedis = null;

            try {
                jedis = jedisSentinelPool.getResource();

                if (jedis != null) {
                    if (value == null)
                        value = "";

                    jedis.set(key, value);
                    return true;
                }
            } catch (Exception ex) {
                ex.printStackTrace();
                jedisSentinelPool.returnBrokenResource(jedis);
            } finally {
                jedisSentinelPool.returnResource(jedis);
            }

            return false;
        }
    }

    static public String Get(String key, String defaultval) {
        if (jedisSentinelPool == null)
            return defaultval;

        synchronized (syncObj) {
            Jedis jedis = null;

            try {
                jedis = jedisSentinelPool.getResource();

                if (jedis != null) {
                    String value = jedis.get(key);

                    if (value == null)
                        value = defaultval;

                    return value;
                }
            } catch (Exception ex) {
                ex.printStackTrace();
                jedisSentinelPool.returnBrokenResource(jedis);
            } finally {
                jedisSentinelPool.returnResource(jedis);
            }

            return defaultval;
        }
    }

    static public boolean Del(String key) {
        if (jedisSentinelPool == null)
            return false;

        synchronized (syncObj) {
            Jedis jedis = null;

            try {
                jedis = jedisSentinelPool.getResource();

                if (jedis != null) {
                    jedis.del(key);
                    return true;
                }
            } catch (Exception ex) {
                ex.printStackTrace();
                jedisSentinelPool.returnBrokenResource(jedis);
            } finally {
                jedisSentinelPool.returnResource(jedis);
            }

            return false;
        }
    }

    static public boolean Auth(String key) {
        if (jedisSentinelPool == null)
            return false;

        synchronized (syncObj) {
            Jedis jedis = null;

            try {
                jedis = jedisSentinelPool.getResource();

                if (jedis != null) {
                    jedis.auth(key);
                    return true;
                }
            } catch (Exception ex) {
                ex.printStackTrace();
                jedisSentinelPool.returnBrokenResource(jedis);
            } finally {
                jedisSentinelPool.returnResource(jedis);
            }

            return false;
        }
    }

    static public Set<String> Select(String pattern) {
        if (jedisSentinelPool == null)
            return null;

        synchronized (syncObj) {
            Jedis jedis = null;

            try {
                jedis = jedisSentinelPool.getResource();

                if (jedis != null) {
                    Set<String> keys = jedis.keys(pattern);
                    return keys;
                }
            } catch (Exception ex) {
                ex.printStackTrace();
                jedisSentinelPool.returnBrokenResource(jedis);
            } finally {
                jedisSentinelPool.returnResource(jedis);
            }

            return null;
        }
    }
}

public class RedisTest {

    public static void main(String[] args) {

        RedisConnector.Start();

        RedisConnector.Set("str1", "world");
        System.out.println(RedisConnector.Get("str", "default"));
        System.out.println(RedisConnector.Get("str1", "default"));
    }
}