io/ioutil deprecated (#3217)

tools/goctl/migrate/migrate.go

@@ -8,7 +8,6 @@ import (
 	"go/parser"
 	"go/token"
 	"io/fs"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -163,7 +162,7 @@ func writeFile(pkgs []*ast.Package, verbose bool) error {
 				return fmt.Errorf("[rewriteImport] format file %s error: %w", filename, err)
 			}
 
-			err = ioutil.WriteFile(filename, w.Bytes(), os.ModePerm)
+			err = os.WriteFile(filename, w.Bytes(), os.ModePerm)
 			if err != nil {
 				return fmt.Errorf("[rewriteImport] write file %s error: %w", filename, err)
 			}

tools/goctl/migrate/version.go

@@ -2,7 +2,7 @@ package migrate
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 	"time"
@@ -34,7 +34,7 @@ func getLatest(repo string, verbose bool) ([]string, error) {
 			continue
 		}
 		defer resp.Body.Close()
-		data, err := ioutil.ReadAll(resp.Body)
+		data, err := io.ReadAll(resp.Body)
 		if err != nil {
 			log(err)
 			continue