spring boot data redis如何将hashmap更改为Model

Question

我是spring和spring boot的新手，现在用的是spring data redis。

1. 我有一个这样的模型

   @Entity
   @Table(name = "users")
   public class User {
       private Long id;
   
       @Id
       @javax.persistence.Column(name = "id", nullable = false, insertable = true, updatable = true)
   
       private String email;
   
       @Basic
       @javax.persistence.Column(name = "email", nullable = false, insertable = true, updatable = true, length = 128)
   
      //some other fields and getters and setters
   
   }
   

2. 在redis中，我们使用哈希存储用户模型，像这样。 关键是：u_id

   redis-cli> hgetall u_19999
     1) "id"
     2) "19999"
     3) "email"
     4) "xx@gmail.com"
     5) "weblink"
     6) "www.google.com"
   

3. 在spring boot数据redis中

   HashOperations<String, String, String> hashOperations = this.stringRedisTemplate.opsForHash();
   String key = "u_"+userId;
   Map<String, String> userMap = hashOperations.entries(key);
   

现在，userMap 是一个 hashmap，包含模型用户的字段，现在我想将 userMap 更改为模型用户

我该怎么办？

提前致谢。

Answer 1

1. 首先得到所有字段

    HashOperations<String, String, String> hashOperations =            this.stringRedisTemplate.opsForHash();
    String key = "u_"+userId;
    Map<String, String> userMap = hashOperations.entries(key);
   

2. 使用BeanUtilsHashMapper 类

   HashMapper<User, String, String> mapper = new BeanUtilsHashMapper<User>(User.class);
   return mapper.fromHash(userMap);