Jedis和springboot集成redis

01 Jedis

1.前期準備

<!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>2.9.0</version>
</dependency>

2.簡單的使用

• 這里在測試類里演示

public class Test {
    public static void main(String[] args) {
        //首先要創建Jedis連接對象
        Jedis jedis = new Jedis("127.0.0.1",6379);
		//之后通過對象直接調用相關的語法即可
        //和cmd終端中操作類似
        jedis.select(5);//選擇5號數據庫
        List<String> num2 = jedis.lrange("num2", 0, -1);//展示數據庫中列表的全部數據
        for (String s : num2) {
            System.out.println(s);
        }

    }
}

3.Jedis中的事務

public class Test {
    public static void main(String[] args) {
        Jedis jedis = new Jedis("127.0.0.1",6379);
		//創建一個事務
        Transaction multi = jedis.multi();

        try {
           
            multi.set("a1","133");
            System.out.println(multi.get("n1"));
            //提交事務
            multi.exec();


        }catch (Exception e){
            e.printStackTrace();
            //失敗時取消事務
            multi.discard();
        }
    }
}

02 springboot集成redis

1.前期準備

• 在創建springboot項目時選擇nosql或者手動導入依賴

• 手動配置依賴

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

2.配置yml文件

spring:
  redis:
    host: 127.0.0.1
    port: 6379
    database: 5

• 默認端口6379，我這邊選擇的數據庫是5號庫

3.測試

• 測試類

• public class User implements Serializable {
      private String id;
      private String username;
      private String password;
      private String name;
      //構造方法記得寫
  }
  

• 先要注入

@Resource
private RedisTemplate<String,Object> redisTemplate;

• 測試

   @Test
    void contextLoads() {
        ValueOperations valueOperations=redisTemplate.opsForValue();

        valueOperations.set("n2","666");

        System.out.println(valueOperations.get("n2"));

        User user=new User("1","xiaoni","1233","ni");
        
        valueOperations.set("user:"+user.getId(),user);
        System.out.println(valueOperations.get("user:"+user.getId()));

    }