java之jedis使用

下載

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使用

# Redis settings
redis.host=192.168.208.153
redis.port=6379
redis.pass=1234
redis.timeout=10000

redis.maxIdle=300
redis.maxTotal=600
# 毫秒
redis.maxWaitMillis=1000

redis.properties

package com.zze.util;
 
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
 
/**
 * 屬性文件加載工具類
 * @author zze
 */
public class PropertyUtil {

    //加載property文件到io流裏面
    public static Properties loadProperties(String propertyFile) {
        Properties properties = new Properties();
        try {
            InputStream is = PropertyUtil.class.getClassLoader().getResourceAsStream(propertyFile);
            if (is == null) {
                is = PropertyUtil.class.getClassLoader().getResourceAsStream("properties/" + propertyFile);
            }
            properties.load(is);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return properties;
    }

    /**
     * 根據key值取得對應的value值
     *
     * @param key
     * @return
     */
    public static String getValue(String propertyFile, String key) {
        Properties properties = loadProperties(propertyFile);
        return properties.getProperty(key);
    }

}

com.zze.util.PropertyUtil

package com.zze.util;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

import java.util.Properties;
@SuppressWarnings("all")
public class RedisClient {
    //鏈接池
    private static JedisPool jedisPool;

    static {
        try {
            Properties properties = PropertyUtil.loadProperties("redis.properties");
            String host = properties.getProperty("redis.host");
            String port = properties.getProperty("redis.port");
            String pass = properties.getProperty("redis.pass");
            String timeout = properties.getProperty("redis.timeout");
            String maxIdle = properties.getProperty("redis.maxIdle");
            String maxTotal = properties.getProperty("redis.maxTotal");
            String maxWaitMillis = properties.getProperty("redis.maxWaitMillis");
            String testOnBorrow = properties.getProperty("redis.testOnBorrow");

            JedisPoolConfig config = new JedisPoolConfig();
            //控制一個pool可分配多少個jedis實例，經過pool.getResource()來獲取；
            //若是賦值爲-1，則表示不限制；若是pool已經分配了maxActive個jedis實例，則此時pool的狀態爲exhausted(耗盡)。
            config.setMaxTotal(Integer.parseInt(maxTotal));
            //控制一個pool最多有多少個狀態爲idle(空閒的)的jedis實例。
            config.setMaxIdle(Integer.parseInt(maxIdle));
            //表示當borrow(引入)一個jedis實例時，最大的等待時間，若是超過等待時間，則直接拋出JedisConnectionException；
            config.setMaxWaitMillis(Long.parseLong(maxWaitMillis));
            //在borrow一個jedis實例時，是否提早進行validate操做；若是爲true，則獲得的jedis實例均是可用的；
            config.setTestOnBorrow(Boolean.valueOf(testOnBorrow));
            jedisPool = new JedisPool(config, host, Integer.parseInt(port), Integer.parseInt(timeout), pass);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    //獲取Redis資源
    public synchronized static Jedis getJedis() {
        try {
            if (jedisPool != null) {
                Jedis jedis = jedisPool.getResource();
                return jedis;
            } else {
                return null;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    //釋放redis資源
    public synchronized static void releaseConn(Jedis jedis) {
        if (jedisPool != null) {
            jedis.close();
        }
    }
}

com.zze.util.RedisClient

@Test
public void test2(){
    Jedis jedis = RedisClient.getJedis();
    jedis.set("name", "張三");
    String name = jedis.get("name");
    System.out.println(name);
}