springboot2.x 整合redis

1.jar包依赖

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<dependency>     <groupId>redis.clients</groupId>     <artifactId>jedis</artifactId>     <version>2.9.0</version> </dependency>    <dependency>     <groupId>org.springframework.boot</groupId>     <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency>

2.application.yml

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# redis配置 redis:   host: localhost   password:   timeout: 2000   port: 6379

3.config配置类

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package com.example.proserver.config;   import lombok.Data; import org.springframework.boot.context.properties.ConfigurationProperties;   /**  * @Title: RedisProperties  * @ProjectName proserver  * @date 2019/3/511:33  */ @Data @ConfigurationProperties(prefix = "redis") public class RedisProperties {     private String host;     private String password;     private int timeout;     private int port; }

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package com.example.proserver.config;   import com.example.proserver.util.FastJson2JsonRedisSerializer; import com.example.proserver.util.RedisUtil; import lombok.extern.slf4j.Slf4j; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.connection.RedisConnectionFactory; import org.springframework.data.redis.connection.RedisStandaloneConfiguration; import org.springframework.data.redis.connection.jedis.JedisClientConfiguration; import org.springframework.data.redis.connection.jedis.JedisConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer; import org.springframework.data.redis.serializer.RedisSerializer; import org.springframework.data.redis.serializer.StringRedisSerializer;   import java.time.Duration;   /**  * @Title: RedisConfig  * @ProjectName proserver  * @date 2019/3/511:26  */ @Slf4j @Configuration @EnableConfigurationProperties(RedisProperties.class) public class RedisConfig {     @Bean     public RedisTemplate functionDomainRedisTemplate(RedisConnectionFactory redisConnectionFactory) {         RedisTemplate redisTemplate = new RedisTemplate();         initDomainRedisTemplate(redisTemplate, redisConnectionFactory);         return redisTemplate;     }     @Bean     public JedisConnectionFactory JedisConnectionFactory(RedisProperties redisProperties) {         RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();         redisStandaloneConfiguration.setHostName(redisProperties.getHost());         redisStandaloneConfiguration.setPort(redisProperties.getPort());         //由于我们使用了动态配置库,所以此处省略         //redisStandaloneConfiguration.setDatabase(database); //        设置密码 //        redisStandaloneConfiguration.setPassword(RedisPassword.of(redisProperties.getPassword()));         JedisClientConfiguration.JedisClientConfigurationBuilder jedisClientConfiguration = JedisClientConfiguration.builder();         jedisClientConfiguration.connectTimeout(Duration.ofMillis(redisProperties.getTimeout()));         JedisConnectionFactory factory = new JedisConnectionFactory(redisStandaloneConfiguration,                 jedisClientConfiguration.build());         return factory;     }       private void initDomainRedisTemplate(RedisTemplate redisTemplate, RedisConnectionFactory factory) {         // 如果不配置Serializer，那么存储的时候缺省使用String         // 这里根据自己需求吧         redisTemplate.setKeySerializer(new StringRedisSerializer());         redisTemplate.setHashKeySerializer(new StringRedisSerializer());         redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());         redisTemplate.setValueSerializer(fastJson2JsonRedisSerializer());         // 开启事务         redisTemplate.setEnableTransactionSupport(true);         redisTemplate.setConnectionFactory(factory);     }       @Bean     public RedisSerializer fastJson2JsonRedisSerializer() {         return new FastJson2JsonRedisSerializer<Object>(Object.class);     }       @Bean(name = "redisUtil")     public RedisUtil redisUtil(RedisTemplate redisTemplate) {         RedisUtil redisUtil = new RedisUtil();         redisUtil.setRedisTemplate(redisTemplate);         return redisUtil;     } }

4.util工具类

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package com.example.proserver.util;   import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.serializer.SerializerFeature; import org.springframework.data.redis.serializer.RedisSerializer; import org.springframework.data.redis.serializer.SerializationException;   import java.nio.charset.Charset;   /**  * @Title: FastJson2JsonRedisSerializer  * @ProjectName proserver  * @date 2019/3/511:41  */ public class FastJson2JsonRedisSerializer<T> implements RedisSerializer<T> {     public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");       private Class<T> clazz;       public FastJson2JsonRedisSerializer(Class<T> clazz) {         super(); this.clazz = clazz;     }       @Override     public byte[] serialize(T t) throws SerializationException {         if (t == null) {             return new byte[0];         }         return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);     }       @Override     public T deserialize(byte[] bytes) throws SerializationException {         if (bytes == null || bytes.length <= 0) {             return null;         }         String str = new String(bytes, DEFAULT_CHARSET);         return (T) JSON.parseObject(str, clazz);     } }

5.RedisUtil.java

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package com.example.proserver.util;   import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Lazy; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.util.CollectionUtils;   import java.util.List; import java.util.Map; import java.util.Set; import java.util.concurrent.TimeUnit;   /**  * @Title: RedisUtil  * @ProjectName proserver  * @date 2019/3/511:47  */ @Lazy public class RedisUtil {     @Autowired     private RedisTemplate redisTemplate;         public void setRedisTemplate(RedisTemplate redisTemplate) {         this.redisTemplate = redisTemplate;     }     //=============================common============================     /**      * 指定缓存失效时间      * @param key 键      * @param time 时间(秒)      * @return      */     public boolean expire(String key,long time){         try {             if(time>0){                 redisTemplate.expire(key, time, TimeUnit.SECONDS);             }             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 根据key 获取过期时间      * @param key 键 不能为null      * @return 时间(秒) 返回0代表为永久有效      */     public long getExpire(String key){         return redisTemplate.getExpire(key,TimeUnit.SECONDS);     }       /**      * 判断key是否存在      * @param key 键      * @return true 存在 false不存在      */     public boolean hasKey(String key){         try {             return redisTemplate.hasKey(key);         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 删除缓存      * @param key 可以传一个值 或多个      */     @SuppressWarnings("unchecked")     public void del(String ... key){         if(key!=null&&key.length>0){             if(key.length==1){                 redisTemplate.delete(key[0]);             }else{                 redisTemplate.delete(CollectionUtils.arrayToList(key));             }         }     }       //============================String=============================     /**      * 普通缓存获取      * @param key 键      * @return 值      */     public Object get(String key){         return key==null?null:redisTemplate.opsForValue().get(key);     }       /**      * 普通缓存放入      * @param key 键      * @param value 值      * @return true成功 false失败      */     public boolean set(String key,Object value) {         try {             redisTemplate.opsForValue().set(key, value);             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }       }       /**      * 普通缓存放入并设置时间      * @param key 键      * @param value 值      * @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期      * @return true成功 false 失败      */     public boolean set(String key,Object value,long time){         try {             if(time>0){                 redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);             }else{                 redisTemplate.opsForValue().set(key, value);             }             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 递增      * @param key 键      * @param delta 要增加几(大于0)      * @return      */     public long incr(String key, long delta){         if(delta<0){             throw new RuntimeException("递增因子必须大于0");         }         return redisTemplate.opsForValue().increment(key, delta);     }       /**      * 递减      * @param key 键      * @param delta 要减少几(小于0)      * @return      */     public long decr(String key, long delta){         if(delta<0){             throw new RuntimeException("递减因子必须大于0");         }         return redisTemplate.opsForValue().increment(key, -delta);     }       //================================Map=================================     /**      * HashGet      * @param key 键 不能为null      * @param item 项 不能为null      * @return 值      */     public Object hget(String key,String item){         return redisTemplate.opsForHash().get(key, item);     }       /**      * 获取hashKey对应的所有键值      * @param key 键      * @return 对应的多个键值      */     public Map<Object,Object> hmget(String key){         return redisTemplate.opsForHash().entries(key);     }       /**      * HashSet      * @param key 键      * @param map 对应多个键值      * @return true 成功 false 失败      */     public boolean hmset(String key, Map<String,Object> map){         try {             redisTemplate.opsForHash().putAll(key, map);             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * HashSet 并设置时间      * @param key 键      * @param map 对应多个键值      * @param time 时间(秒)      * @return true成功 false失败      */     public boolean hmset(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;         }     }       /**      * 向一张hash表中放入数据,如果不存在将创建      * @param key 键      * @param item 项      * @param value 值      * @return true 成功 false失败      */     public boolean hset(String key,String item,Object value) {         try {             redisTemplate.opsForHash().put(key, item, value);             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 向一张hash表中放入数据,如果不存在将创建      * @param key 键      * @param item 项      * @param value 值      * @param time 时间(秒)  注意:如果已存在的hash表有时间,这里将会替换原有的时间      * @return true 成功 false失败      */     public boolean hset(String key,String item,Object value,long time) {         try {             redisTemplate.opsForHash().put(key, item, value);             if(time>0){                 expire(key, time);             }             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 删除hash表中的值      * @param key 键 不能为null      * @param item 项 可以使多个 不能为null      */     public void hdel(String key, Object... item){         redisTemplate.opsForHash().delete(key,item);     }       /**      * 判断hash表中是否有该项的值      * @param key 键 不能为null      * @param item 项 不能为null      * @return true 存在 false不存在      */     public boolean hHasKey(String key, String item){         return redisTemplate.opsForHash().hasKey(key, item);     }       /**      * hash递增 如果不存在,就会创建一个 并把新增后的值返回      * @param key 键      * @param item 项      * @param by 要增加几(大于0)      * @return      */     public double hincr(String key, String item,double by){         return redisTemplate.opsForHash().increment(key, item, by);     }       /**      * hash递减      * @param key 键      * @param item 项      * @param by 要减少记(小于0)      * @return      */     public double hdecr(String key, String item,double by){         return redisTemplate.opsForHash().increment(key, item,-by);     }       //============================set=============================     /**      * 根据key获取Set中的所有值      * @param key 键      * @return      */     public Set<Object> sGet(String key){         try {             return redisTemplate.opsForSet().members(key);         } catch (Exception e) {             e.printStackTrace();             return null;         }     }       /**      * 根据value从一个set中查询,是否存在      * @param key 键      * @param value 值      * @return true 存在 false不存在      */     public boolean sHasKey(String key,Object value){         try {             return redisTemplate.opsForSet().isMember(key, value);         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 将数据放入set缓存      * @param key 键      * @param values 值 可以是多个      * @return 成功个数      */     public long sSet(String key, Object...values) {         try {             return redisTemplate.opsForSet().add(key, values);         } catch (Exception e) {             e.printStackTrace();             return 0;         }     }       /**      * 将set数据放入缓存      * @param key 键      * @param time 时间(秒)      * @param values 值 可以是多个      * @return 成功个数      */     public long sSetAndTime(String key,long time,Object...values) {         try {             Long count = redisTemplate.opsForSet().add(key, values);             if(time>0) expire(key, time);             return count;         } catch (Exception e) {             e.printStackTrace();             return 0;         }     }       /**      * 获取set缓存的长度      * @param key 键      * @return      */     public long sGetSetSize(String key){         try {             return redisTemplate.opsForSet().size(key);         } catch (Exception e) {             e.printStackTrace();             return 0;         }     }       /**      * 移除值为value的      * @param key 键      * @param values 值 可以是多个      * @return 移除的个数      */     public long setRemove(String key, Object ...values) {         try {             Long count = redisTemplate.opsForSet().remove(key, values);             return count;         } catch (Exception e) {             e.printStackTrace();             return 0;         }     }     //===============================list=================================       /**      * 获取list缓存的内容      * @param key 键      * @param start 开始      * @param end 结束  0 到 -1代表所有值      * @return      */     public List<Object> lGet(String key, long start, long end){         try {             return redisTemplate.opsForList().range(key, start, end);         } catch (Exception e) {             e.printStackTrace();             return null;         }     }       /**      * 获取list缓存的长度      * @param key 键      * @return      */     public long lGetListSize(String key){         try {             return redisTemplate.opsForList().size(key);         } catch (Exception e) {             e.printStackTrace();             return 0;         }     }       /**      * 通过索引 获取list中的值      * @param key 键      * @param index 索引  index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推      * @return      */     public Object lGetIndex(String key,long index){         try {             return redisTemplate.opsForList().index(key, index);         } catch (Exception e) {             e.printStackTrace();             return null;         }     }       /**      * 将list放入缓存      * @param key 键      * @param value 值      * @return      */     public boolean lSet(String key, Object value) {         try {             redisTemplate.opsForList().rightPush(key, value);             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 将list放入缓存      * @param key 键      * @param value 值      * @param time 时间(秒)      * @return      */     public boolean lSet(String key, Object value, long time) {         try {             redisTemplate.opsForList().rightPush(key, value);             if (time > 0) expire(key, time);             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 将list放入缓存      * @param key 键      * @param value 值      * @return      */     public boolean lSet(String key, List<Object> value) {         try {             redisTemplate.opsForList().rightPushAll(key, value);             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 将list放入缓存      * @param key 键      * @param value 值      * @param time 时间(秒)      * @return      */     public boolean lSet(String key, List<Object> value, long time) {         try {             redisTemplate.opsForList().rightPushAll(key, value);             if (time > 0) expire(key, time);             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 根据索引修改list中的某条数据      * @param key 键      * @param index 索引      * @param value 值      * @return      */     public boolean lUpdateIndex(String key, long index,Object value) {         try {             redisTemplate.opsForList().set(key, index, value);             return true;         } catch (Exception e) {             e.printStackTrace();             return false;         }     }       /**      * 移除N个值为value      * @param key 键      * @param count 移除多少个      * @param value 值      * @return 移除的个数      */     public long lRemove(String key,long count,Object value) {         try {             Long remove = redisTemplate.opsForList().remove(key, count, value);             return remove;         } catch (Exception e) {             e.printStackTrace();             return 0;         }     } }

6.测试controller

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package com.example.proserver.controller;   import com.example.proserver.util.RedisUtil; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; /**  * @Title: RedisTestController  * @ProjectName proserver  * @date 2019/3/514:05  */ @Controller @Slf4j @RequestMapping("/redis") public class RedisTestController{       @Autowired     RedisUtil redisUtil;       @RequestMapping(value="/get")     @ResponseBody     public Object test(@RequestParam String key) {         try {             Object o = redisUtil.get(key);             return "get：{key:"+key+",value:"+o.toString()+"}";         } catch (Exception e) {             e.printStackTrace();         }         return null;     }       @RequestMapping(value="/set")     @ResponseBody     public String set(@RequestParam String key, @RequestParam String value){         try {             redisUtil.set(key, value);             return "set：{key:"+key+",value:"+value+"}";         } catch (Exception e) {             e.printStackTrace();         }         return "null";     } }