Jedis是java开发的操作redis的工具包。
引入maven依赖:
<dependency>
<groupId>redis.clientsgroupId>
<artifactId>jedisartifactId>
<version>4.2.1version>
dependency>
使用redis的api操作redis:
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPubSub;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
public class JedisTest {
Jedis jedis;
@Before
public void before() {
this.jedis = new Jedis("192.168.200.129", 6379);
}
@After
public void after() {
//关闭jedis
this.jedis.close();
}
/**
* 测试redis是否连通
*/
@Test
public void test1() {
String ping = jedis.ping();
System.out.println(ping);
}
/**
* string类型测试
*/
@Test
public void stringTest() {
jedis.set("site", "http://www.itsoku.com");
System.out.println(jedis.get("site"));
System.out.println(jedis.ttl("site"));
}
/**
* list类型测试
*/
@Test
public void listTest() {
jedis.rpush("courses", "java", "spring", "springmvc", "springboot");
List<String> courses = jedis.lrange("courses", 0, -1);
for (String course : courses) {
System.out.println(course);
}
}
/**
* zset类型测试
*/
@Test
public void setTest() {
jedis.sadd("users", "tom", "jack", "ready");
Set<String> users = jedis.smembers("users");
for (String user : users) {
System.out.println(user);
}
}
/**
* 订阅消息
*
* @throws InterruptedException
*/
@Test
public void subscribeTest() throws InterruptedException {
//subscribe(消息监听器,频道列表)
jedis.subscribe(new JedisPubSub() {
@Override
public void onMessage(String channel, String message) {
System.out.println(channel + ":" + message);
}
}, "sitemsg");
TimeUnit.HOURS.sleep(1); }
}
/**
* 发布消息
*/
@Test
public void publishTest() {
jedis.publish("sitemsg", "hello redis");
}
}
引入redis的maven配置:
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-data-redisartifactId>
dependency>
application.properties中配置redis信息:
# redis 服务器 ip
spring.redis.host=192.168.200.129
# redis 服务器端口
spring.redis.port=6379
# redis 密码
#spring.redis.password=root
# 连接超时时间(毫秒)
spring.redis.timeout=60000
# Redis默认情况下有16个分片,这里配置具体使用的分片,默认是0
spring.redis.database=0
使用RedisTemplate工具类操作redis:
springboot中使用RedisTemplate来操作redis,需要在我们的bean中注入这个对象,代码如下:
@Autowired private RedisTemplate<String, String> redisTemplate; // 用下面5个对象来操作对应的类型
this.redisTemplate.opsForValue(); //提供了操作string类型的所有方法
this.redisTemplate.opsForList(); // 提供了操作list类型的所有方法
this.redisTemplate.opsForSet(); //提供了操作set的所有方法
this.redisTemplate.opsForHash(); //提供了操作hash表的所有方法
this.redisTemplate.opsForZSet(); //提供了操作zset的所有方法
RedisTemplate示例代码:
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap; import java.util.List;
import java.util.Map; import java.util.Set;
import java.util.concurrent.TimeUnit;
@RestController
@RequestMapping("/redis")
public class RedisController {
@Autowired
private RedisTemplate<String, String> redisTemplate;
@RequestMapping("/stringTest")
public String stringTest() {
this.redisTemplate.delete("name");
this.redisTemplate.opsForValue().set("name", "路人");
String name = this.redisTemplate.opsForValue().get("name");
return name;
}
@RequestMapping("/listTest")
public List<String> listTest() {
this.redisTemplate.delete("names");
this.redisTemplate.opsForList().rightPushAll("names", "刘德华", "张学友", "郭富城", "黎明");
List<String> courses = this.redisTemplate.opsForList().range("names", 0, -1);
return courses;
}
@RequestMapping("setTest")
public Set<String> setTest() {
this.redisTemplate.delete("courses");
this.redisTemplate.opsForSet().add("courses", "java", "spring", "springboot");
Set<String> courses = this.redisTemplate.opsForSet().members("courses");
return courses;
}
@RequestMapping("hashTest")
public Map<Object, Object> hashTest() {
this.redisTemplate.delete("userMap");
Map<String, String> map = new HashMap<>();
map.put("name", "路人"); map.put("age", "30");
this.redisTemplate.opsForHash().putAll("userMap", map);
Map<Object, Object> userMap = this.redisTemplate.opsForHash().entries("userMap");
return userMap;
}
@RequestMapping("zsetTest")
public Set<String> zsetTest() {
this.redisTemplate.delete("languages");
this.redisTemplate.opsForZSet().add("languages", "java", 100d);
this.redisTemplate.opsForZSet().add("languages", "c", 95d);
this.redisTemplate.opsForZSet().add("languages", "php", 70);
Set<String> languages = this.redisTemplate.opsForZSet().range("languages", 0, -1);
return languages;
}
}