Hibernate常见映射类型，供参考：
| 类型名称 | 显示长度 | 数据库类型 | JAVA类型 | JDBC类型(int) | Types属性 |
| VARCHAR | L+N | VARCHAR | java.lang.String | 12 | Types.VARCHAR |
| CHAR | N | CHAR | java.lang.String | 1 | Types.CHAR |
| BLOB | L+N | BLOB | java.lang.byte[] | -4 | Types.LONGVARBINARY |
| TEXT | 65535 | VARCHAR | java.lang.String | -1 | Types.LONGVARCHAR |
| INTEGER | 4 | INTEGER UNSIGNED | java.lang.Long | 4 | Types.INTEGER |
| TINYINT | 3 | TINYINT UNSIGNED | java.lang.Integer | -6 | Types.TINYINT |
| SMALLINT | 5 | SMALLINT UNSIGNED | java.lang.Integer | 5 | Types.SMALLINT |
| MEDIUMINT | 8 | MEDIUMINT UNSIGNED | java.lang.Integer | 4 | Types.INTEGER |
| BIT | 1 | BIT | java.lang.Boolean | -7 | Types.BIT |
| BIGINT | 20 | BIGINT UNSIGNED | java.math.BigInteger | -5 | Types.BIGINT |
| FLOAT | 4+8 | FLOAT | java.lang.Float | 7 | Types.REAL |
| DOUBLE | 22 | DOUBLE | java.lang.Double | 8 | Types.DOUBLE |
| DECIMAL | 11 | DECIMAL | java.math.BigDecimal | 3 | Types.DECIMAL |
| BOOLEAN | 1 | 同TINYINT | java.lang.Integer | -6 | Types.TINYINT |
| DATE | 10 | DATE | java.sql.Date | 91 | Types.DATE |
| TIME | 8 | TIME | java.sql.Time | 92 | Types.TIME |
| DATETIME | 19 | DATETIME | java.sql.Timestamp | 93 | Types.TIMESTAMP |
| TIMESTAMP | 19 | TIMESTAMP | java.sql.Timestamp | 93 | Types.TIMESTAMP |
| YEAR | 4 | YEAR | java.sql.Date | 91 | Types.DATE |