jedis 连接redis：

使用jedis如何操作redis，但是其实方法是跟redis的操作大部分是相对应的。

所有的redis命令都对应jedis的一个方法

1、在macen工程中引入jedis的jar包

<dependency>
   <groupId>redis.clients</groupId>
   <artifactId>jedis</artifactId>
</dependency>

2、建立测试工程

public class JedisTest {

    @Test
    public void testJedis()throws Exception{
        Jedis jedis = new Jedis("192.168.241.133",6379);
        jedis.set("test", "my forst jedis");
        String str = jedis.get("test");
        System.out.println(str);
        jedis.close();
    }
}

3、点击运行

使用jedisPool连接redis

jedis可以连接redis，为何需要Jedispool？

每次连接需要创建一个连接、执行完后就关闭，非常浪费资源，所以使用jedispool（连接池）连接。原理和jdbc操作数据库一样。

1、添加依赖pom.xml中添加如下依赖

<!-- 操作redis -->
       <dependency>
           <groupId>redis.clients</groupId>
           <artifactId>jedis</artifactId>
       </dependency>
       <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
       <dependency>
           <groupId>com.alibaba</groupId>
           <artifactId>fastjson</artifactId>
           <version>1.2.75</version>
       </dependency>

2、redis配置文件

#redis
redis.host=121.4.60.79
redis.port=6379
redis.timeout=3
redis.password=123456
redis.poolMaxTotal=10
redis.poolMaxIdle=10
redis.poolMaxWait=3

注：idea会提示Cannot resolve configuration property。不影响运行。

3、绑定配置文件

package com.mc.redis;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix="redis")
public class RedisConfig {
	private String host;
	private int port;
	private int timeout;//秒
	private String password;
	private int poolMaxTotal;
	private int poolMaxIdle;
	private int poolMaxWait;//秒
	public String getHost() {
		return host;
	}
	public void setHost(String host) {
		this.host = host;
	}
	public int getPort() {
		return port;
	}
	public void setPort(int port) {
		this.port = port;
	}
	public int getTimeout() {
		return timeout;
	}
	public void setTimeout(int timeout) {
		this.timeout = timeout;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public int getPoolMaxTotal() {
		return poolMaxTotal;
	}
	public void setPoolMaxTotal(int poolMaxTotal) {
		this.poolMaxTotal = poolMaxTotal;
	}
	public int getPoolMaxIdle() {
		return poolMaxIdle;
	}
	public void setPoolMaxIdle(int poolMaxIdle) {
		this.poolMaxIdle = poolMaxIdle;
	}
	public int getPoolMaxWait() {
		return poolMaxWait;
	}
	public void setPoolMaxWait(int poolMaxWait) {
		this.poolMaxWait = poolMaxWait;
	}
}

4、JedisPool的使用

package com.mc.redis;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

@Service
public class RedisPoolFactory {

	@Autowired
	RedisConfig redisConfig;
	
	@Bean
	public JedisPool JedisPoolFactory() {
		JedisPoolConfig poolConfig = new JedisPoolConfig();
		poolConfig.setMaxIdle(redisConfig.getPoolMaxIdle());
		poolConfig.setMaxTotal(redisConfig.getPoolMaxTotal());
		poolConfig.setMaxWaitMillis(redisConfig.getPoolMaxWait() * 1000);
		JedisPool jp = new JedisPool(poolConfig, redisConfig.getHost(), redisConfig.getPort(),
				redisConfig.getTimeout()*1000, redisConfig.getPassword(), 0);
		return jp;
	}
	
}

5、测试使用

注人

@Autowired
JedisPool jedisPool;