***demo项目代码地址 github https://github.com/alwaysInRoad/redis-demo
1、在pom.xml文件中引入
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
2、配置文件application.properties中
server.port=8080
#redis
spring.redis.database=5
#redis的地址
spring.redis.host=localhost
#redis的端口号,这里是默认
spring.redis.port=6379
#redis的密码
#spring.redis.password=123456
#连接池最大连接数(使用负值表示没有限制)
spring.redis.jedis.pool.max-active=8
#连接池最大阻塞等待时间(使用负值表示没有限制)
spring.redis.jedis.pool.max-wait=-1
#连接池中的最大空闲连接
spring.redis.jedis.pool.max-idle=8
#连接池中的最小空闲连接
spring.redis.jedis.pool.min-idle=0
如果是application.yml配置:
spring:
port: 8080
redis:
#Redis数据库索引(默认为15)
database: 15
#redis的地址
host: localhost
#redis的端口号,这里是默认)
port: 6379
#redis的密码
#password: 123456
jedis:
pool:
#连接池最大连接数(使用负值表示没有限制)
max-active: 8
#连接池最大阻塞等待时间(使用负值表示没有限制)
max-wait: -1
#连接池中的最大空闲连接
max-idle: 8
#连接池中的最小空闲连接
min-idle: 0
#连接超时时间(毫秒)
timeout: 0
3、编写 RedisConfig 类 仅仅简单实现存取,这个类不要也可以。 那么要与不要有什么不同,在类此类后面将以图片的形式简单说明
import java.lang.reflect.Method;
import java.time.Duration;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
@Configuration
@EnableCaching //继承CachingConfigurerSupport并重写方法,配合该注解实现spring缓存框架的使用
public class RedisConfig {
@Autowired
RedisConnectionFactory redisConnectionFactory;
@Autowired
RedisTemplate redisTemplate;
@SuppressWarnings({ "rawtypes", "unchecked" })
@Bean
public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
StringRedisTemplate template = new StringRedisTemplate(factory);
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
template.setValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
@Bean
CacheManager cacheManager(RedisConnectionFactory connectionFactory) {
// 初始化一个RedisCacheWriter
RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(connectionFactory);
RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig();
// 设置默认超过期时间是30秒
defaultCacheConfig.entryTtl(Duration.ofSeconds(30));
// 初始化RedisCacheManager
RedisCacheManager cacheManager = new RedisCacheManager(redisCacheWriter, defaultCacheConfig);
return cacheManager;
}
/**
* 重写缓存key生成策略,可根据自身业务需要进行自己的配置生成条件
* @return
**/
@Bean
public KeyGenerator redisKeyGenerator() {
return new KeyGenerator() {
@Override
public Object generate(Object target, Method method, Object... params) {
StringBuilder sb = new StringBuilder();
sb.append(target.getClass().getName());
sb.append(method.getName());
for (Object obj : params) {
sb.append(obj.toString());
}
return sb.toString();
}
};
}
}
4、编写 TestController 类
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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;
@RestController
public class TestController {
private static final Logger logger = LoggerFactory.getLogger(TestController.class);
@Autowired
RedisTemplate redisTemplate;
@RequestMapping("/set")
public void set() {
redisTemplate.opsForValue().set("test", "4321");
}
@RequestMapping("/show")
public String show(){
logger.info(redisTemplate.opsForValue().get("test").toString());
return "Hello World";
}
}
5.打开浏览器访问 http://localhost:8080/set 即可存入redis
再访问 http://localhost:8080/show 即可在后台看到打印日志
结语: 【作者希望每一个人懂得分享】 如有不足请多多指教
如果有问题,可留言,或评论。 qq: 1226500260。 邮箱:[email protected]