spring boot整合redis实现RedisTemplate三分钟快速入门
引入依赖
org.springframework.boot spring-boot-starter-data-redis
RedisTemplate五种数据结构的操作
- redisTemplate.opsForValue();//操作字符串
- redisTemplate.opsForHash();//操作hash
- redisTemplate.opsForList();//操作list
- redisTemplate.opsForSet();//操作set
- redisTemplate.opsForZSet();//操作有序zset
RedisTemplate方法讲解
判断key是否存在
/** *判断key是否存在 */ @GetMapping("haskey") publicbooleanhasKey(Stringkey){ returnredisTemplate.hasKey(key); }
获取指定的key的失效时间
/** *指定key的失效时间 */ @GetMapping("expire") publicvoidexpire(Stringkey,longtime){ //参数一:key //参数二:睡眠时间 //参数三:睡眠时间单位TimeUnit.DAYS天TimeUnit.HOURS小时。。。 redisTemplate.expire(key,time,TimeUnit.MINUTES); }
根据key获取过期时间
/** *根据key获取过期时间 */ @GetMapping("getexpire") publiclonggetExpire(Stringkey){ Longexpire=redisTemplate.getExpire(key); returnexpire; }
根据key删除reids中缓存数据
/** *根据key删除reids中缓存数据 */ @GetMapping("delredisbykey") publicvoiddelete(Stringkey){ redisTemplate.delete(key); }
保存和读取String
/** *保存和读取String */ @GetMapping("stringredisdemo") publicStringstringredisdemo(){ //设置过期时间为1分钟 redisTemplate.opsForValue().set("key1","value1",1,TimeUnit.MINUTES); redisTemplate.opsForValue().set("key2","value2"); redisTemplate.opsForValue().set("key3","value3"); //读取redis数据 Stringresult1=redisTemplate.opsForValue().get("key1").toString(); Stringresult2=redisTemplate.opsForValue().get("key2").toString(); Stringresult3=redisTemplate.opsForValue().get("key3").toString(); System.out.println("缓存结果为:result:"+result1+""+result2+""+result3); return"缓存结果为:result:"+result1+""+result2+""+result3; }
保存和读取list
/** *保存和读取list */ @GetMapping("listredisdemo") publicStringlistredisdemo(){ Listlist1=newArrayList<>(); list1.add("a1"); list1.add("a2"); list1.add("a3"); List list2=newArrayList<>(); list2.add("b1"); list2.add("b2"); list2.add("b3"); redisTemplate.opsForList().leftPush("listkey1",list1); redisTemplate.opsForList().rightPush("listkey2",list2); List resultList1=(List )redisTemplate.opsForList().leftPop("listkey1"); List resultList2=(List )redisTemplate.opsForList().rightPop("listkey2"); System.out.println("resultList1:"+resultList1); System.out.println("resultList2:"+resultList2); return"成功"; }
Hash结构,保存和读取map
/** *Hash结构,保存和读取map */ @GetMapping("mapredisdemo") publicStringmapredisdemo(){ Mapmap=newHashMap<>(); map.put("key1","value1"); map.put("key2","value2"); map.put("key3","value3"); map.put("key4","value4"); map.put("key5","value5"); redisTemplate.opsForHash().putAll("map1",map); Map resultMap=redisTemplate.opsForHash().entries("map1"); List reslutMapList=redisTemplate.opsForHash().values("map1"); Set resultMapSet=redisTemplate.opsForHash().keys("map1"); Stringvalue=(String)redisTemplate.opsForHash().get("map1","key1"); System.out.println("value:"+value); System.out.println("resultMapSet:"+resultMapSet); System.out.println("resultMap:"+resultMap); System.out.println("resulreslutMapListtMap:"+reslutMapList); return"成功"; }
保存和读取Set
/** *保存和读取Set */ @GetMapping("setredisdemo") publicStringgetredisdemo(){ SetOperationsset=redisTemplate.opsForSet(); set.add("key1","value1"); set.add("key1","value2"); set.add("key1","value3"); Set resultSet=redisTemplate.opsForSet().members("key1"); System.out.println("resultSet:"+resultSet); return"resultSet:"+resultSet; }
保存和读取zset
/** *保存和读取zset */ @GetMapping("zsetredisdemo") publicStringzsetredisdemo(){ ZSetOperations.TypedTuple
完整示例代码
importorg.springframework.beans.factory.annotation.Autowired; importorg.springframework.data.redis.core.DefaultTypedTuple; importorg.springframework.data.redis.core.RedisTemplate; importorg.springframework.data.redis.core.SetOperations; importorg.springframework.data.redis.core.ZSetOperations; importorg.springframework.web.bind.annotation.GetMapping; importorg.springframework.web.bind.annotation.RestController; importjava.util.*; importjava.util.concurrent.TimeUnit; @RestController publicclassReidsDemo{ @Autowired RedisTemplateredisTemplate; /** *指定key的失效时间 */ @GetMapping("expire") publicvoidexpire(Stringkey,longtime){ //参数一:key //参数二:睡眠时间 //参数三:睡眠时间单位TimeUnit.DAYS天TimeUnit.HOURS小时。。。 redisTemplate.expire(key,time,TimeUnit.MINUTES); } /** *根据key获取过期时间 */ @GetMapping("getexpire") publiclonggetExpire(Stringkey){ Longexpire=redisTemplate.getExpire(key); returnexpire; } /** *判断key是否存在 */ @GetMapping("haskey") publicbooleanhasKey(Stringkey){ returnredisTemplate.hasKey(key); } /** *根据key删除reids中缓存数据 */ @GetMapping("delredisbykey") publicvoiddelete(Stringkey){ redisTemplate.delete(key); } /** *保存和读取String */ @GetMapping("stringredisdemo") publicStringstringredisdemo(){ //设置过期时间为1分钟 redisTemplate.opsForValue().set("key1","value1",1,TimeUnit.MINUTES); redisTemplate.opsForValue().set("key2","value2"); redisTemplate.opsForValue().set("key3","value3"); //读取redis数据 Stringresult1=redisTemplate.opsForValue().get("key1").toString(); Stringresult2=redisTemplate.opsForValue().get("key2").toString(); Stringresult3=redisTemplate.opsForValue().get("key3").toString(); System.out.println("缓存结果为:result:"+result1+""+result2+""+result3); return"缓存结果为:result:"+result1+""+result2+""+result3; } /** *保存和读取list */ @GetMapping("listredisdemo") publicStringlistredisdemo(){ Listlist1=newArrayList<>(); list1.add("a1"); list1.add("a2"); list1.add("a3"); List list2=newArrayList<>(); list2.add("b1"); list2.add("b2"); list2.add("b3"); redisTemplate.opsForList().leftPush("listkey1",list1); redisTemplate.opsForList().rightPush("listkey2",list2); List resultList1=(List )redisTemplate.opsForList().leftPop("listkey1"); List resultList2=(List )redisTemplate.opsForList().rightPop("listkey2"); System.out.println("resultList1:"+resultList1); System.out.println("resultList2:"+resultList2); return"成功"; } /** *Hash结构,保存和读取map */ @GetMapping("mapredisdemo") publicStringmapredisdemo(){ Map map=newHashMap<>(); map.put("key1","value1"); map.put("key2","value2"); map.put("key3","value3"); redisTemplate.opsForHash().putAll("map1",map); Map resultMap=redisTemplate.opsForHash().entries("map1"); List reslutMapList=redisTemplate.opsForHash().values("map1"); Set resultMapSet=redisTemplate.opsForHash().keys("map1"); Stringvalue=(String)redisTemplate.opsForHash().get("map1","key1"); System.out.println("value:"+value); System.out.println("resultMapSet:"+resultMapSet); System.out.println("resultMap:"+resultMap); System.out.println("resulreslutMapListtMap:"+reslutMapList); return"成功"; } /** *保存和读取Set */ @GetMapping("setredisdemo") publicStringgetredisdemo(){ SetOperations set=redisTemplate.opsForSet(); set.add("key1","value1"); set.add("key1","value2"); set.add("key1","value3"); Set resultSet=redisTemplate.opsForSet().members("key1"); System.out.println("resultSet:"+resultSet); return"resultSet:"+resultSet; } /** *保存和读取zset */ @GetMapping("zsetredisdemo") publicStringzsetredisdemo(){ ZSetOperations.TypedTuple objectTypedTuple1=newDefaultTypedTuple<>("zset-5",9.6); ZSetOperations.TypedTuple objectTypedTuple2=newDefaultTypedTuple<>("zset-6",9.9); Set >tuples=newHashSet<>(); tuples.add(objectTypedTuple1); tuples.add(objectTypedTuple2); System.out.println(redisTemplate.opsForZSet().add("zset1",tuples)); System.out.println(redisTemplate.opsForZSet().range("zset1",0,-1)); return"成功"; } }
序列化
直接粘贴在项目中即可
importorg.springframework.context.annotation.Bean; importorg.springframework.context.annotation.Configuration; importorg.springframework.data.redis.connection.RedisConnectionFactory; importorg.springframework.data.redis.core.RedisTemplate; importorg.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer; importorg.springframework.data.redis.serializer.RedisSerializer; importorg.springframework.data.redis.serializer.StringRedisSerializer; /* *序列化 */ @Configuration publicclassMyRedisConfig{ @Bean(name="redisTemplate") publicRedisTemplateredisTemplate(RedisConnectionFactoryredisConnectionFactory){ RedisTemplate redisTemplate=newRedisTemplate<>(); //参照StringRedisTemplate内部实现指定序列化器 redisTemplate.setConnectionFactory(redisConnectionFactory); redisTemplate.setKeySerializer(keySerializer()); redisTemplate.setHashKeySerializer(keySerializer()); redisTemplate.setValueSerializer(valueSerializer()); redisTemplate.setHashValueSerializer(valueSerializer()); returnredisTemplate; } privateRedisSerializer keySerializer(){ returnnewStringRedisSerializer(); } //使用Jackson序列化器 privateRedisSerializer valueSerializer(){ returnnewGenericJackson2JsonRedisSerializer(); } }
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