MySql数据类型参考：http://www.runoob.com/mysql/mysql-data-types.html
Mybatis JDBC与Mysql，Oracle数据类型之间的对应关系
| JdbcType | Oracle | MySql |
|---|---|---|
| ARRAY | ||
| BIGINT | BIGINT | |
| BINARY | ||
| BIT | ||
| BLOB | BLOB | TINYBLOB，BLOB，MEDIUMBLOB，LONGBLOB |
| BOOLEAN | TINYINT | |
| CHAR | CHAR | CHAR |
| CLOB | CLOB | |
| CURSOR | ||
| DATE | DATE | DATE |
| DECIMAL | DECIMAL | DECIMAL |
| DOUBLE | NUMBER | DOUBLE |
| FLOAT | FLOAT | FLOAT |
| INTEGER | INTEGER | INTEGER，INT |
| LONGVARBINARY | ||
| LONGVARCHAR | LONG VARCHAR | TEXT，MEDIUMTEXT，LONGTEXT |
| NCHAR | NCHAR | |
| NCLOB | NCLOB | |
| NULL | ||
| NUMERIC | NUMERIC，NUMBER | NUMERIC |
| NVARCHAR | ||
| OTHER | ||
| REAL | REAL | REAL |
| SMALLINT | SMALLINT | SMALLINT |
| STRUCT | ||
| TIME | TIME | |
| TIMESTAMP | TIMESTAMP | TIMESTAMP，DATETIME |
| TINYINT | TINYINT | |
| UNDEFINED | ||
| VARBINARY | ||
| VARCHAR | VARCHAR | VARCHAR，TINYTEXT |
JAVA Type与JDBC之间的对应关系：
| JdbcType | javaType |
|---|---|
| CHAR | java.lang.String |
| VARCHAR | java.lang.String |
| LONGVARCHAR | java.lang.String |
| NUMERIC | java.math.BigDecimal |
| DECIMAL | java.math.BigDecimal |
| BIT | boolean |
| BOOLEAN | boolean，java.lang.Boolean |
| TINYINT | byte，java.lang.Byte |
| SMALLINT | short ，java.lang.Short |
| INTEGER | int ，java.lang.Integer |
| BIGINT | long，java.lang.Long |
| REAL | float ，java.lang.Float |
| FLOAT | double， java.lang.Double |
| DOUBLE | double ，java.lang.Double |
| BINARY | byte[] |
| VARBINARY | byte[] |
| LONGVARBINARY | byte[] |
| DATE | java.sql.Date |
| TIME | java.sql.Time |
| TIMESTAMP | java.sql.Timestamp |
| CLOB | java.sql.Clob |
| BLOB | java.sql.Blob |
| ARRAY | java.sql.Array |
| DISTINCT | |
| STRUCT | java.sql.Struct |
| REF | java.sql.Ref |
| DATALINK | |