fix issue missing mysql driver import for package contrib/drivers/mysql

contrib/drivers/mssql/mssql.go

@@ -13,14 +13,14 @@
 package mssql
 
 import (
-	_ "github.com/denisenkom/go-mssqldb"
-
 	"context"
 	"database/sql"
 	"fmt"
 	"strconv"
 	"strings"
 
+	_ "github.com/denisenkom/go-mssqldb"
+
 	"github.com/gogf/gf/v2/container/gmap"
 	"github.com/gogf/gf/v2/database/gdb"
 	"github.com/gogf/gf/v2/errors/gcode"

contrib/drivers/mysql/mysql.go

@@ -13,6 +13,8 @@ import (
 	"fmt"
 	"net/url"
 
+	_ "github.com/go-sql-driver/mysql"
+
 	"github.com/gogf/gf/v2/container/gmap"
 	"github.com/gogf/gf/v2/database/gdb"
 	"github.com/gogf/gf/v2/errors/gcode"

contrib/drivers/oracle/oracle.go

@@ -13,8 +13,6 @@
 package oracle
 
 import (
-	_ "github.com/mattn/go-oci8"
-
 	"context"
 	"database/sql"
 	"fmt"
@@ -23,6 +21,8 @@ import (
 	"strings"
 	"time"
 
+	_ "github.com/mattn/go-oci8"
+
 	"github.com/gogf/gf/v2/container/gmap"
 	"github.com/gogf/gf/v2/database/gdb"
 	"github.com/gogf/gf/v2/errors/gcode"

contrib/drivers/sqlite/sqlite.go

@@ -12,13 +12,13 @@
 package sqlite
 
 import (
-	_ "github.com/mattn/go-sqlite3"
-
 	"context"
 	"database/sql"
 	"fmt"
 	"strings"
 
+	_ "github.com/mattn/go-sqlite3"
+
 	"github.com/gogf/gf/v2/container/gmap"
 	"github.com/gogf/gf/v2/database/gdb"
 	"github.com/gogf/gf/v2/errors/gcode"