一、jedis是什么？

Jedis是redis的java版本的客户端实现，使用Jedis提供的Java API对Redis进行操作，是Redis官方推崇的方式；并且，使用Jedis提供的对Redis的支持也最为灵活、全面；不足之处，就是编码复杂度较高。

二、hello world

1、下载jar包，使用maven的话添加如下依赖即可

<dependency>

<groupId>redis.clients</groupId>

<artifactId>jedis</artifactId>

<version>2.9.0</version>

</dependency>

2、建立连接

Jedis jedis = new Jedis("127.0.0.1", 6379);

3、jedis操作

1. String操作

jedis.set("username", "张三疯了");

System.out.println(jedis.get("username"));

jedis.append("username", "吗？");

System.out.println(jedis.get("username"));

jedis.del("username");

System.out.println(jedis.get("username"));

jedis.mset("username", "zhangsan", "sex", "男", "age", "18");

jedis.incr("age");

System.out.println(jedis.mget("username", "sex", "age"));

1. Map操作

Map<String, String> person = new HashMap<>();

person.put("name", "李四");

person.put("sex", "男");

person.put("age", "28");

jedis.hmset("person", person);

System.out.println(jedis.hmget("person", "name", "sex", "age"));

jedis.hdel("person", "age");

System.out.println(jedis.hmget("person", "age"));

System.out.println(jedis.hlen("person"));

System.out.println(jedis.exists("person"));

System.out.println(jedis.hkeys("person"));

System.out.println(jedis.hvals("person"));

System.out.println(jedis.hgetAll("person"));

1. List操作

jedis.lpush("persons", "张三", "李四", "王五");

System.out.println(jedis.lrange("persons", 0, -1));

jedis.del("persons");

jedis.rpush("persons", "张三", "李四", "王五");

System.out.println(jedis.lrange("persons", 0, -1));

jedis.del("li");

jedis.lpush("li", "10");

jedis.lpush("li", "15");

jedis.rpush("li", "66");

jedis.rpush("li", "44");

jedis.rpush("li", "99");

System.out.println(jedis.lrange("li", 0, -1));

System.out.println(jedis.sort("li"));

System.out.println(jedis.lrange("li", 0, -1));

1. Set操作

jedis.sadd("users", "张三","李四","张三","王五");

System.out.println(jedis.scard("users"));

System.out.println(jedis.smembers("users"));

jedis.srem("users", "张三");

System.out.println(jedis.smembers("users"));

System.out.println(jedis.sismember("users", "李四"));

System.out.println(jedis.srandmember("users"));

三、spring整合

1、添加依赖

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-context</artifactId>

<version>4.3.8.RELEASE</version>

</dependency>

<dependency>

<groupId>redis.clients</groupId>

<artifactId>jedis</artifactId>

<version>2.9.0</version>

</dependency>

<dependency>

<groupId>org.springframework.data</groupId>

<artifactId>spring-data-redis</artifactId>

<version>1.7.5.RELEASE</version>

</dependency>

2、创建redisdb.properties文件，配置redis相关参数

redis.host=127.0.0.1

redis.port=6379

#redis.pass=123456

redis.maxIdle=500

redis.maxTotal=600

redis.maxWaitMillis=1000

redis.testOnBorrow=true

redis.weight=1

redis.timeout=3000

maxIdle：jedis最大活跃数

maxTotal ：jedis最大连接数   

minIdle ： jedis最小空闲数（连接池中最少保留的jedis连接数）

testOnBorrow ：在borrow一个jedis的时候验证其是否可用，可用则返回，不可用则废弃重新创建一个

3、在spring配置文件中添加redis配置

<context:property-placeholder location="classpath:redisdb.properties"/>

<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">

<property name="maxIdle" value="${redis.maxIdle}"></property>

<property name="maxTotal" value="${redis.maxTotal}"></property>

<property name="maxWaitMillis" value="${redis.maxWaitMillis}"></property>

<property name="testOnBorrow" value="${redis.testOnBorrow}"></property>

</bean>

<bean id="shardedJedisPool" class="redis.clients.jedis.ShardedJedisPool">

<constructor-arg index="0" ref="jedisPoolConfig"></constructor-arg>

<constructor-arg index="1">

<list>

<bean class="redis.clients.jedis.JedisShardInfo">

<constructor-arg index="0" value="${redis.host}"></constructor-arg>

<constructor-arg index="1" value="${redis.port}" type="int"></constructor-arg>

</bean>

</list>

</constructor-arg>

</bean>

4、测试