Redis：java和SpringBoot中使用Redis

Jedis操作Redis6

Jedis是java开发的操作redis的工具包。

引入maven依赖：

<dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>4.2.1</version> 
</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;@Beforepublic void before() {this.jedis = new Jedis("192.168.200.129", 6379);}@Afterpublic void after() {//关闭jedisthis.jedis.close();}/*** 测试redis是否连通*/@Testpublic void test1() {String ping = jedis.ping();System.out.println(ping);}/*** string类型测试*/@Testpublic 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*/@Testpublic 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*/@Testpublic 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*/@Testpublic void subscribeTest() throws InterruptedException {//subscribe(消息监听器,频道列表)jedis.subscribe(new JedisPubSub() {@Overridepublic void onMessage(String channel, String message) {System.out.println(channel + ":" + message);}}, "sitemsg");TimeUnit.HOURS.sleep(1); }}/*** 发布消息*/@Testpublic void publishTest() {jedis.publish("sitemsg", "hello redis");}}

SpringBoot整合Redis

引入redis的maven配置：

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> 
</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 {@Autowiredprivate 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; }}