java相关:Redis在springboot中的使用教程

发布于 2020-11-23|标签java
复制链接
摘记: 依赖如下: ```java org.springframework.boot spring-boot-starter-data-redis ``` 配置文件如下: ```jav ..
依赖如下: ```java org.springframework.boot spring-boot-starter-data-redis ``` 配置文件如下: ```java spring: redis: open: true # 是否开启redis缓存 true开启 false关闭 database: 0 host: 47.104.208.124 port: 6378 password: lf.1228 # 密码(默认为空) timeout: 6000 # 连接超时时长(毫秒) pool: max-active: 1000 # 连接池最大连接数(使用负值表示没有限制) max-wait: -1 # 连接池最大阻塞等待时间(使用负值表示没有限制) max-idle: 10 # 连接池中的最大空闲连接 min-idle: 5 # 连接池中的最小空闲连接 ``` RedisConfig类: ```java @Configuration public class RedisConfig { @Autowired private RedisConnectionFactory factory; @Bean public RedisTemplate redisTemplate() { RedisTemplate redisTemplate = new RedisTemplate(); redisTemplate.setKeySerializer(new StringRedisSerializer()); redisTemplate.setHashKeySerializer(new StringRedisSerializer()); redisTemplate.setHashValueSerializer(new StringRedisSerializer()); redisTemplate.setValueSerializer(new StringRedisSerializer()); redisTemplate.setConnectionFactory(factory); return redisTemplate; } @Bean public HashOperations hashOperations(RedisTemplate redisTemplate) { return redisTemplate.opsForHash(); } @Bean public ValueOperations valueOperations(RedisTemplate redisTemplate) { return redisTemplate.opsForValue(); } @Bean public ListOperations listOperations(RedisTemplate redisTemplate) { return redisTemplate.opsForList(); } @Bean public SetOperations setOperations(RedisTemplate redisTemplate) { return redisTemplate.opsForSet(); } @Bean public ZSetOperations zSetOperations(RedisTemplate redisTemplate) { return redisTemplate.opsForZSet(); } } ``` RedisUtils如下: ```java @Component public class RedisUtils { @Autowired private RedisTemplate redisTemplate; @Autowired private ValueOperations valueOperations; @Autowired private HashOperations hashOperations; @Autowired private ListOperations listOperations; @Autowired private SetOperations setOperations; @Autowired private ZSetOperations zSetOperations; /** 默认过期时长,单位:秒 */ public final static long DEFAULT_EXPIRE = 60 * 60 * 24; /** 不设置过期时长 */ public final static long NOT_EXPIRE = -1; private final static Gson gson = new Gson(); public void set(String key, Object value, long expire){ valueOperations.set(key, toJson(value)); if(expire != NOT_EXPIRE){ redisTemplate.expire(key, expire, TimeUnit.SECONDS); } } public void set(String key, Object value){ set(key, value, DEFAULT_EXPIRE); } public T get(String key, Class clazz, long expire) { String value = valueOperations.get(key); if(expire != NOT_EXPIRE){ redisTemplate.expire(key, expire, TimeUnit.SECONDS); } return value == null ? null : fromJson(value, clazz); } public T get(String key, Class clazz) { return get(key, clazz, NOT_EXPIRE); } public String get(String key, long expire) { String value = valueOperations.get(key); if(expire != NOT_EXPIRE){ redisTemplate.expire(key, expire, TimeUnit.SECONDS); } return value; } public String get(String key) { return get(key, NOT_EXPIRE); } public void delete(String key) { redisTemplate.delete(key); } /** * Object转成JSON数据 */ private String toJson(Object object){ if(object instanceof Integer || object instanceof Long || object instanceof Float || object instanceof Double || object instanceof Boolean || object instanceof String){ return String.valueOf(object); } return gson.toJson(object); } /** * JSON数据,转成Object */ private T fromJson(String json, Class clazz){ return gson.fromJson(json, clazz); } } ``` springboot如何封装redis:RedisTemplate 所在包: org.springframework.data.redis.core 作用:redis模板,redis事务,序列化支持,操作redis方法JedisConnectionFactory所在包:org.springframework.data.redis.connection.jedis 作用:redis连接工厂类,创建redis连接池等RedisAutoConfiguration所在包:org.springframework.boot.autoconfigure.data.redis 作用:将redis配置文件相关信息注入工厂类RedisProperties所在包:org.springframework.boot.autoconfigure.data.redis 作用:redis连接基础类通过@ConfigurationProperties注解将配置信息注入属性 原文地址: https://blog.csdn.net/qq_39533847/article/details/80680873
冀ICP备17029012号-4 | 版权所有©鲍亚龙 |免责声明  | GIF图库  | NUXT版