java - 如何使用对象的属性作为@CachePut 的键？

Question

public interface MyRespository extends CrudRepository<MyEntity, Long> {
    @CachePut(value = "mycache", key = "id")
    @Override
    public <S extends MyEntity> S save(S entity);
}

@Entity
public class MyEntity {
    @Id
    private Long id;

    public Long getId() { return id; }
    public void setId(Long id) { this.id = id; }
}

结果:

org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 0): Property or field 'id' cannot be found on object of type 'org.springframework.cache.interceptor.CacheExpressionRootObject' - maybe not public?

Answer 1

使用 key = "#a0.id" 通过索引访问对象是可行的，但我仍然不知道为什么不能通过名称访问对象。