Jedis和springboot集成redis

Jedis和springboot集成redis

01 Jedis

1.前期准备

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

2.简单的使用

• 这里在测试类里演示

public class Test {
    public static void main(String[] args) {
        //首先要创建Jedis连接对象
        Jedis jedis = new Jedis("127.0.0.1",6379);
		//之后通过对象直接调用相关的语法即可
        //和cmd终端中操作类似
        jedis.select(5);//选择5号数据库
        List<String> num2 = jedis.lrange("num2", 0, -1);//展示数据库中列表的全部数据
        for (String s : num2) {
            System.out.println(s);
        }

    }
}

3.Jedis中的事务

public class Test {
    public static void main(String[] args) {
        Jedis jedis = new Jedis("127.0.0.1",6379);
		//创建一个事务
        Transaction multi = jedis.multi();

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


        }catch (Exception e){
            e.printStackTrace();
            //失败时取消事务
            multi.discard();
        }
    }
}

02 springboot集成redis

1.前期准备

• 在创建springboot项目时选择nosql或者手动导入依赖

• 手动配置依赖

<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

• 默认端口6379，我这边选择的数据库是5号库

3.测试

• 测试类

• public class User implements Serializable {
      private String id;
      private String username;
      private String password;
      private String name;
      //构造方法记得写
  }
  

• 先要注入

@Resource
private RedisTemplate<String,Object> redisTemplate;

• 测试

   @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()));

    }