Jedis和springboot集成redis-蒲公英云

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

org.springframework.boot
spring-boot-starter-data-redis

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 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()));
}