snaker-core/src/main/java/org/snaker/engine/access/jdbc/JdbcHelper.java
public static String getDatabaseType(Connection conn) throws Exception {
        DatabaseMetaData databaseMetaData = conn.getMetaData();
        String databaseProductName = databaseMetaData.getDatabaseProductName();
        return databaseTypeMappings.getProperty(databaseProductName);
    }
public static String getDatabaseType(Connection conn) throws Exception {
        DatabaseMetaData databaseMetaData = conn.getMetaData();
        String databaseProductName = databaseMetaData.getDatabaseProductName();
        return databaseTypeMappings.getProperty(databaseProductName);
    }
根据连接对象获取数据库类型
@param conn 数据库连接
@return 类型
@throws Exception