Question

我有Grails（2.2.1）项目，并希望用Hibernate创建简单的“模型”类

@Entity
@Table(name="User")
class User {

    static mapping = {
        datasource 'system'
    }

    @Id
    @GeneratedValue
    @Column(name="id")
    private Long userId;

    @Column(name="email", nullable=false)
    private String email;

    public User(){

    }

    @Transient
    public Long getUserId(){
        return this.userId;
    }

    @Transient
    public String getEmail(){
        return this.email;
    }

}

但我得到了以下错误：

Caused by MappingException: Could not determine type for: org.springframework.validation.Errors, at table: user, for columns: [org.hibernate.mapping.Column(errors)]
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread

当我删除所有hibernate注释时，app部署在服务器上但是表User只有两个属性（id，version）。

感谢您的帮助！

Answer 1

将您的域类移至grails-app/domain并将其更改为：

class User {
    String email

    static mapping = {
        datasource 'system'
    }

    static constraints = {
        email nullable: false
    }
}

11行与31行。 Groovy的。

Grails - Hibernate - 无法创建模型类/表

1 个答案: