首先引入Redis
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
然后写一个Redis的工具类
package com.sws.platform.config;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
public class JedisConfig {
//Redis服务器IP
private static String ADDR = "127.0.0.1";
//Redis的端口号
private static int PORT = 6379;
//可用连接实例的最大数目,默认值为8;
//如果赋值为-1,则表示不限制;如果pool已经分配了maxActive个jedis实例,则此时pool的状态为exhausted(耗尽)。
private static int MAX_ACTIVE = 10000;
//控制一个pool最多有多少个状态为idle(空闲的)的jedis实例,默认值也是8。
private static int MAX_IDLE = 200;
//等待可用连接的最大时间,单位毫秒,默认值为-1,表示永不超时。如果超过等待时间,则直接抛出JedisConnectionException;
private static int MAX_WAIT = 10000;
private static int TIMEOUT = 10000;
//在borrow一个jedis实例时,是否提前进行validate操作;如果为true,则得到的jedis实例均是可用的;
private static boolean TEST_ON_BORROW = true;
private static JedisPool jedisPool = null;
/**
* 初始化Redis连接池
*/
static {
try {
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(MAX_ACTIVE); //整个池最大值
config.setMaxIdle(MAX_IDLE);
config.setMaxWaitMillis(MAX_WAIT);
config.setTestOnBorrow(TEST_ON_BORROW);
jedisPool = new JedisPool(config, ADDR, PORT);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 获取Jedis实例
* @return
*/
public synchronized static Jedis getJedis() {
try {
if (jedisPool != null) {
Jedis resource = jedisPool.getResource();
return resource;
} else {
return null;
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 释放jedis资源
* @param jedis
*/
public static void returnResource(final Jedis jedis) {
if (jedis != null) {
jedisPool.returnResource(jedis);
}
}
}
然后开始保存List<>
public void selectFromAnimalShengList() {
List<AnimalTopDTO> toAniaml = newAnimalPursueMapper.selectFromAnimalShengList();
Jedis jedis = JedisConfig.getJedis();
//将List转为json字符串
String jsonObject = JSONObject.toJSONString(toAniaml);
jedis.set("selectToAnimalShengList",jsonObject);
JedisConfig.returnResource(jedis);
}
然后取获取List<>
@PostMapping("/loadData")
public Object loadData(){
Jedis jedis = JedisConfig.getJedis();
String loadData=jedis.get("loadDatacron");
List<AnimalPursueDTO> loadDatacron=JSONObject.parseArray(loadData,AnimalPursueDTO.class);
System.out.println("redis数据:" +loadDatacron);
return loadDatacron;
}