redis出现WRONGTYPE Operation against a key holding the wrong kind of value错误

操做redis时，想设置一个hash值，出现了WRONGTYPE Operation against a key holding the wrong kind of value 的错误

HashOperations hashOperations = redisTemplate.opsForHash();

hashOperations.put("user", "name", "zhangsan");

出现

Caused by: io.lettuce.core.RedisCommandExecutionException: WRONGTYPE Operation against a key holding the wrong kind of value

出现此状况的缘由颇有多是由于：

redis中已经存在同名，但不一样类型的key值。

因而用type命令查看了此键值的类型，结果显示是字符串，所以用hash的命令，没法执行。

确保此键值没用后，用del命令删除或者更改key名称即可。

HashOperations hashOperations = redisTemplate.opsForHash();

hashOperations.put("new_name", "name", "zhangsan");