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HomeDatabaseMysql Tutorial基于redis内存数据库简单使用

基于redis内存数据库简单使用

Jun 07, 2016 pm 03:56 PM
redisuseMemorybased ondatabaseSimple

在ecplise中使用内存数据的客端户,前提要准备要下载两个jar包 commons-pool2-2.0.jar jedis-2.4.2.jar 前提准备做好了,那我们就开启redis的服务,打开一个命令窗口输入如下命令:redis-server 或redis-server redis根目\redis.conf 服务器已经开启了,注意

在ecplise中使用内存数据的客端户,前提要准备要下载两个jar包

commons-pool2-2.0.jar

jedis-2.4.2.jar

前提准备做好了,那我们就开启redis的服务,打开一个命令窗口输入如下命令:redis-server 或redis-server redis根目\redis.conf

\

服务器已经开启了,注意端号是6377 

2.在eclipse 创建一个项目,把redist需要的包导入项目中

\

3.写一个Jedis工具类

public class JedisUtil {

private static String HOST="127.0.0.1"; //本机地址

private static Integer PORT=6379; //服务端口

private static JedisPoolConfig config; //连接池的配置对象

private static JedisPool pool; //连接池对象

static{

config = new JedisPoolConfig();

config.setMaxIdle(1024*10); //设置内存大小

pool = new JedisPool(config,HOST);

}

/**

*

* @return 从连接池里获取一个Jedis对象

*/

public static Jedis getPoolJedis(){

return pool.getResource();

}

/**

* 手动把Jedis对象,回放到连接池里

*/

public static void returnPoolJedis(Jedis jedis){

pool.returnResource(jedis);

}

/**

* @return 直接创建一个Jedis连接

*/

public static Jedis getJedis(){

return new Jedis(HOST, PORT);

}

}

4.写一个客户端类操作jedis

public class Client {

public static void main(String[] args) {

//simpleSet();

mSet();

}

private static void mSet() {

//注意 如果使用 JedisUtil.getJedis(); 是直接创建一个jredis对象,所以不受连接池管理,所以不能回放到连接池里

Jedis jedis = JedisUtil.getPoolJedis();

//设置值多个值

jedis.mset("userName","user1","pwd","123");

//取值

List list = jedis.mget("userName","pwd");

for (String string : list) {

System.out.println(string);

}

jedis.flushDB();

JedisUtil.returnPoolJedis(jedis);

}

private static void simpleSet() {

Jedis jedis = JedisUtil.getPoolJedis();

//设置值

jedis.set("userName", "user1");

//取值

System.out.println("userName:"+jedis.get("userName"));

//清空内存数据库

jedis.flushDB();

JedisUtil.returnPoolJedis(jedis);

}

}

现在可以在redist客户端对数据进行取值

打开一个命令窗口,输入命令 redis-cli 开启客户端,原后进行赋值

\

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