二、Jedis的简单使用 Jedis的连接池使用

一、Jedis的简单使用

package com.itheima.jedis;

import org.junit.Test;

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

public class JedisTest {

	//通过java程序访问redis数据库
	@Test
	//获得单一的jedis对象操作数据库
	public void test1(){
		
		//1.获得连接对象
		Jedis jedis = new Jedis("192.168.79.128", 6379);
		
		//2.获得数据
		String username = jedis.get("username");
		System.out.println(username);
		
		//3.存储
		jedis.set("addr","北京");
		System.out.println(jedis.get("addr"));
	}
	
	//通过jedis的pool获得jedis连接对象
	@Test
	public void test2(){
		//0.创建池子的配置对象
		JedisPoolConfig poolConfig = new JedisPoolConfig();
		//最大空闲时间
		poolConfig.setMaxIdle(30);
		poolConfig.setMinIdle(10);
		//最大连接数
		poolConfig.setMaxTotal(50);
		
		//1.创建一个redis的连接池
		JedisPool pool = new JedisPool(poolConfig,"192.168.79.128", 6379);
		
		//2.从池子中获取redis的连接资源
		Jedis jedis = pool.getResource();
		
		//3.操作数据库
		jedis.set("xxx", "yyy");
		System.out.println(jedis.get("xxx"));
		
		//4.关闭资源
		jedis.close();
		pool.close();
		
	}
}

　　

二、Jedis的连接池

redis.properties

redis.maxIdle=30
redis.minIdle=10
redis.maxTotal=100
redis.url=192.168.79.128
redis.port=6379

JedisPoolUtils

package com.itheima.jedis;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

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

public class JedisPoolUtils {
	
	private static JedisPool pool = null;
	
	static{
		
		//加载配置文件
		InputStream in = JedisPoolUtils.class.getClassLoader().getResourceAsStream("redis.properties");
		Properties pro = new Properties();
		try {
			pro.load(in);
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		//获得池子的配置对象
		JedisPoolConfig poolConfig = new JedisPoolConfig();
		poolConfig.setMaxIdle(Integer.parseInt(pro.get("redis.maxIdle").toString()));
		poolConfig.setMinIdle(Integer.parseInt(pro.get("redis.minIdle").toString()));
		poolConfig.setMaxTotal(Integer.parseInt(pro.get("redis.maxTotal").toString()));
		String url = pro.get("redis.url").toString();
		Integer port = Integer.parseInt(pro.get("redis.port").toString());
		pool = new JedisPool(poolConfig,url,port);
	}

	//获得jedis资源的方法
	public static Jedis getJedis(){
		return pool.getResource();
	}
	
	public static void main(String[] args){
		Jedis jedis = getJedis();
		System.out.println(jedis.get("xxx"));
	}
}