SpringBoot+redis

链接redis

1.导入依赖

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

2.建立连接（测试类中，另外写一个测试方法）

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

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操作数据结构

String

1.设置键和值

jedis.set("username","lxyk");

1.取值

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

3.关闭

jedis.close();

---

hash

1.连接

Jedis jedis = new Jedis();//如果使用空参构造，默认值就是localhost 6379

 2.存储

        jedis.hset("aaaa","name","fbb");
        jedis.hset("aaaa","age","23");
        jedis.hset("aaaa","gender","male");

 3.获取hash

        String hget = jedis.hget("aaaa", "name");
        System.out.println(hget);

全部获取

        Map<String, String> map = jedis.hgetAll("aaaa");      //全部获取
        for (String key : map.keySet()) {
            String value = map.get(key);
            System.out.println(key + ":"+value);
        }

 4.关闭

jedis.close();

list 

    @Test
    public void test4(){
        Jedis jedis = new Jedis();

        //存储
        jedis.lpush("myList","a","b","c");  //左边存    lpush方法中value的位置是可变参数
        jedis.rpush("myList","a","b","c");  //右边存

        //获取
        List<String> myList = jedis.lrange("myList", 0, -1);
        System.out.println("myList = " + myList);

        //list弹出
        System.out.println(jedis.lpop("myList"));   //左弹出
        System.out.println(jedis.rpop("myList"));   //右弹出


        //获取
        List<String> myList2 = jedis.lrange("myList", 0, -1);
        System.out.println("myList2 = " + myList2);

        jedis.close();

    }

 lpush源码

  @Override
  public Long lpush(final String key, final String... strings) {
    checkIsInMultiOrPipeline();
    client.lpush(key, strings);
    return client.getIntegerReply();
  }

set

//set
    @Test
    public void test5(){
        Jedis jedis = new Jedis();

        //set存储
        jedis.sadd("myset","java","php","C++","Go");

        //set获取
        Set<String> myset = jedis.smembers("myset");
        System.out.println("myset = " + myset);

        jedis.close();
    }

 jedis连接池

1.创建一个配置对象

        JedisPoolConfig config = new JedisPoolConfig();         //Jedis 池配置
        config.setMaxTotal(50);                          //最大连接数
        config.setMaxIdle(10);                          //最大空闲连接

 2.创建连接池对象

 JedisPool jedisPool = new JedisPool(config,"localhost",6379);

 jedispool源码

 public JedisPool(final GenericObjectPoolConfig<Jedis> poolConfig, final String host,
      final int port) {
    this(poolConfig, host, port, Protocol.DEFAULT_TIMEOUT);
  }

 把池子配置进去，本机和端口

3.得到Jedis获取连接

 Jedis resource = jedisPool.getResource();         //获取资源

设置数据

 resource.set("hehe","fbbb");

获取

System.out.println(resource.get("hehe"));

 4.关闭连接

 resource.close();

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工具类操作

新建一个工具包utils 

 创建一个工具类

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

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

//工具类
public class JedisPoolUtils {
    //1.来个静态成员变量
    private static JedisPool jedisPool;
    static {
        //读取配置文件
        InputStream is = JedisPoolUtils.class.getClassLoader()
                                                           .getResourceAsStream("jedis.properties");              //需要写一个配置文件
        //创建
        Properties pro = new Properties();
        try {
            pro.load(is);
        } catch (IOException e) {
            e.printStackTrace();
        }
        //获取数据，设置到JedisPoolConfig中
        JedisPoolConfig config = new JedisPoolConfig();         //Jedis 池配置
        config.setMaxIdle(Integer.parseInt(pro.getProperty("maxTotal")));
        config