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1.导包
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>
spring-boot-starter-data-redis</artifactId> </dependency> <dependency> <groupId>
org.springframework.session</groupId> <artifactId>spring-session-data-redis</
artifactId> </dependency>
2.application.properties 中指定库：
指定3号库 驼峰命名 需要和app.config中 private int redisInterceptorDatabase; 相对应
app.redis-Interceptor-database=3
3.app.config 文件
package leyan.website.config; import com.fasterxml.jackson.annotation.
JsonAutoDetect; import com.fasterxml.jackson.annotation.JsonInclude; import com.
fasterxml.jackson.annotation.JsonTypeInfo; import com.fasterxml.jackson.
annotation.PropertyAccessor; import com.fasterxml.jackson.databind.
DeserializationFeature; import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator
; import io.lettuce.core.resource.ClientResources; import lombok.Getter; import
lombok.Setter; import org.springframework.beans.factory.ObjectProvider; import
org.springframework.beans.factory.annotation.Qualifier; import org.
springframework.boot.autoconfigure.data.redis.
LettuceClientConfigurationBuilderCustomizer; import org.springframework.boot.
autoconfigure.data.redis.RedisProperties; import org.springframework.boot.
context.properties.ConfigurationProperties; import org.springframework.boot.
context.properties.EnableConfigurationProperties; import org.springframework.
cache.annotation.EnableCaching; import org.springframework.context.annotation.
Bean; import org.springframework.context.annotation.Configuration; import org.
springframework.context.annotation.Primary; import org.springframework.data.
redis.connection.RedisConnectionFactory; import org.springframework.data.redis.
connection.RedisPassword; import org.springframework.data.redis.connection.
RedisStandaloneConfiguration; import org.springframework.data.redis.connection.
lettuce.LettuceClientConfiguration; import org.springframework.data.redis.
connection.lettuce.LettuceConnectionFactory; import org.springframework.data.
redis.core.RedisTemplate; import org.springframework.data.redis.serializer.
Jackson2JsonRedisSerializer; import org.springframework.data.redis.serializer.
StringRedisSerializer; import org.springframework.security.crypto.bcrypt.
BCryptPasswordEncoder; import org.springframework.security.crypto.password.
PasswordEncoder; import org.springframework.session.data.redis.config.annotation
.SpringSessionRedisConnectionFactory; import java.util.Locale; @Configuration
@ConfigurationProperties("app") @EnableConfigurationProperties(AppConfig.class)
@EnableCaching @Getter @Setter public class AppConfig { private int
redisInterceptorDatabase; @Bean protected ObjectMapper objectMapper() { Locale.
setDefault(Locale.US); var objectMapper = new ObjectMapper(); objectMapper.
disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES); objectMapper.
setSerializationInclusion(JsonInclude.Include.NON_NULL); // 不准写入值为 null
的属性，防止属性泄露 return objectMapper; } @Bean protected PasswordEncoder
passwordEncoder() { return new BCryptPasswordEncoder(13); } @Bean protected
LettuceClientConfigurationlettuceClientConfiguration(ClientResources
clientResources, RedisProperties redisProperties, ObjectProvider<
LettuceClientConfigurationBuilderCustomizer> redisBuilderCustomizers) { var
configurationBuilder= LettuceClientConfiguration.builder(); if (redisProperties.
isSsl()) { configurationBuilder.useSsl(); } if (redisProperties.getTimeout() !=
null) { configurationBuilder.commandTimeout(redisProperties.getTimeout()); } if
(redisProperties.getLettuce() != null) { var lettuce = redisProperties.
getLettuce(); if (lettuce.getShutdownTimeout() != null && !lettuce.
getShutdownTimeout().isZero()) { configurationBuilder.shutdownTimeout(
redisProperties.getLettuce().getShutdownTimeout()); } } configurationBuilder.
clientResources(clientResources); redisBuilderCustomizers.orderedStream().
forEach((customizer) -> customizer.customize(configurationBuilder)); return
configurationBuilder.build(); }
//bean中名字需要和工厂中@Qualifier("redisConnectionInterceptorFactory") 相对应 @Bean(
"redisConnectionInterceptorFactory") protected RedisConnectionFactory
redisCacheConnectionInterceptorFactory(LettuceClientConfiguration
lettuceClientConfiguration, RedisProperties redisProperties) { var config = new
RedisStandaloneConfiguration(); config.setHostName(redisProperties.getHost());
config.setPort(redisProperties.getPort()); config.setPassword(RedisPassword.of(
redisProperties.getPassword())); config.setDatabase(redisInterceptorDatabase);
return new LettuceConnectionFactory(config, lettuceClientConfiguration); } @Bean
("redisInterceptorTemplate") public RedisTemplate<String, String>
redisInterceptorTemplate(@Qualifier("redisConnectionInterceptorFactory")
RedisConnectionFactory factoryCart) { RedisTemplate<String, String> template =
new RedisTemplate<>(); // 配置连接工厂 template.setConnectionFactory(factoryCart);
//使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）
Jackson2JsonRedisSerializer jacksonSeial= new Jackson2JsonRedisSerializer(Object
.class); ObjectMapper om = new ObjectMapper(); //
指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public om.setVisibility(
PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); //
指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
//om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); om.
activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.
DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY); jacksonSeial.setObjectMapper
(om); // 值采用json序列化 template.setValueSerializer(jacksonSeial);
//使用StringRedisSerializer来序列化和反序列化redis的key值 template.setKeySerializer(new
StringRedisSerializer()); // 设置hash key 和value序列化模式 template.
setHashKeySerializer(new StringRedisSerializer()); template.
setHashValueSerializer(jacksonSeial); template.afterPropertiesSet(); return
template; } }
* redis工具类 使用该工具类操作对应库 package leyan.website.util; import lombok.
RequiredArgsConstructor; import org.slf4j.Logger; import org.slf4j.LoggerFactory
; import org.springframework.beans.factory.annotation.Autowired; import org.
springframework.beans.factory.annotation.Qualifier; import org.springframework.
data.redis.core.RedisTemplate; import org.springframework.stereotype.Component;
import java.util.List; import java.util.Map; import java.util.concurrent.
TimeUnit; @Component public class RedisInterceptorUtils { /** * 日志对象 */ private
static Logger logger = LoggerFactory.getLogger(RedisInterceptorUtils.class);
@Autowired @Qualifier("redisInterceptorTemplate")
//@Qualifier("redisInterceptorTemplate") 需要和app.config中配置redis指定工程名称一致 private
RedisTemplate<String, String> redisTemplate; /** * 读取缓存 */ public String get(
final String key) { return redisTemplate.opsForValue().get(key); } /** * 写入缓存 */
public boolean set(final String key, String value) { boolean result = false; try
{ redisTemplate.opsForValue().set(key, value); result = true; } catch (Exception
e) { e.printStackTrace(); } return result; } /** * 更新缓存 */ public boolean
getAndSet(final String key, String value) { boolean result = false; try {
redisTemplate.opsForValue().getAndSet(key, value); result = true; } catch (
Exception e) { e.printStackTrace(); } return result; } /** * 删除缓存 */ public
boolean delete(final String key) { boolean result = false; try { if (key != null
&& key.length() > 0) { redisTemplate.delete(key); result = true; } } catch (
Exception e) { e.printStackTrace(); } return result; } /** * 指定缓存失效时间 */ public
void expire(String key, long time) { try { if (time > 0) { redisTemplate.expire(
key, time, TimeUnit.SECONDS); } } catch (Exception e) { logger.error(
"RedisUtils expire(String key,long time) failure." + e.getMessage()); } } /** *
将list放入缓存 */ public void listSet(String key, String value, long time) { try {
redisTemplate.opsForList().rightPush(key, value); if (time > 0) { expire(key,
time); } } catch (Exception e) { logger.error("RedisUtils lSet(String key,
Object value, long time) failure." + e.getMessage()); } } /** *
根据索引修改list中的某条数据 */ public void listUpdateIndex(String key, long index, String
value) { try { redisTemplate.opsForList().set(key, index, value); } catch (
Exception e) { logger.error("RedisUtils lUpdateIndex(String key, long
index,Object value) failure." + e.getMessage()); } } /** * 获取list缓存的内容 */ public
List<String> listGet(String key, long start, long end) { try { return
redisTemplate.opsForList().range(key, start, end); } catch (Exception e) {
logger.error("RedisUtils lGet(String key, long start, long end) failure." + e.
getMessage()); return null; } } /** * 移除N个值为value */ public long deleteList(
String key, long count, Object value) { try { return redisTemplate.opsForList().
remove(key, count, value); } catch (Exception e) { e.printStackTrace(); return 0
; } } /** * HashSet 并设置时间 */ public boolean setHash(String key, Map<String,
Object> map, long time) { try { redisTemplate.opsForHash().putAll(key, map); if
(time > 0) { expire(key, time); } return true; } catch (Exception e) { e.
printStackTrace(); return false; } } /** * 获取hashKey对应的所有键值 */ public Map<Object
, Object> getHash(String key) { return redisTemplate.opsForHash().entries(key);
} /** * HashGet */ public Object getOneHash(String key, String item) { return
redisTemplate.opsForHash().get(key, item); } /** * 删除hash表中的值 */ public void
deleteHash(String key, Object... item) { redisTemplate.opsForHash().delete(key,
item); } /** * 判断redis是否存在 */ public boolean exitsKey(String key) { return
redisTemplate.hasKey(key); } }