update

Author: Pu Pu

handlers.go

@@ -18,6 +18,8 @@ func StringToInt(a interface{}) (interface{}, error) {
 	if av, ok := a.(string); ok {
 		if ai, err := strconv.Atoi(av); err == nil {
 			return ai, nil
+		} else {
+			return 0, ErrConvertFailed
 		}
 	}
 	return 0, ErrTypeNotMatch
@@ -27,21 +29,28 @@ func StringToStringSlice(a interface{}) (interface{}, error) {
 	if av, ok := a.(string); ok {
 		return strings.Split(av, ","), nil
 	}
-	return a, ErrTypeNotMatch
+	return []string{}, ErrTypeNotMatch
 }
 
 func StringToIntSlice(a interface{}) (interface{}, error) {
+	bv := []int{}
 	a, err := StringToStringSlice(a)
 	if err != nil {
-		return a, err
+		return bv, err
 	}
-	bv := []int{}
 	for _, row := range a.([]string) {
 		rowInt, err := strconv.Atoi(row)
 		if err != nil {
-			return a, ErrConvertFailed
+			return bv, ErrConvertFailed
 		}
 		bv = append(bv, rowInt)
 	}
 	return bv, nil
 }
+
+func Int64ToInt(a interface{}) (interface{}, error) {
+	if aInt64, ok := a.(int64); ok {
+		return int(aInt64), nil
+	}
+	return 0, ErrTypeNotMatch
+}