Question

我正在使用hibernate和spring数据来处理db。我收到了以下错误。我尝试在db中设置默认值，但似乎没有解决这个问题。我做错了什么：

错误：

Caused by: java.sql.SQLException: Field 'USERNAME' doesn't have a default value
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3835)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3771)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2435)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2582)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2535)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1911)
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2145)
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2081)
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2066)
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208)

表查询：

CREATE TABLE `User` (
  `USERNAME` varchar(60) NOT NULL,
  `PASSWORD` varchar(45) NOT NULL,
  `IS_ACTIVE` char(1) NOT NULL,
  `NAME` varchar(100) NOT NULL,
  `EMAIL` varchar(100) NOT NULL,
  `PHONE` varchar(45) NOT NULL,
  PRIMARY KEY (`USERNAME`)

用户pojo：

@Entity
@Table(name= "User")
public class User implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @Column(name = "USERNAME")
    private String username;

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

    @Column(name = "IS_ACTIVE", nullable = false)
    private boolean isActive;

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

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

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

    @OneToOne(mappedBy = "user", cascade=CascadeType.ALL)
    private UserRole userRole;

}

删除了setter和getter以提高可读性。

Answer 1

“用户名”是表“用户”中的主键，因此它必须具有唯一值且不能为空。因此，在持久化用户实体之前，必须为字段“username”设置正确的值。

hibernate错误字段没有默认值

1 个答案: