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server/model/storage_policy.go

@@ -9,11 +9,11 @@ import (
 
 // StoragePolicy 存储策略模型
 type StoragePolicy struct {
-	ID         uint64          `json:"id" gorm:"primaryKey;autoIncrement"`
+	ID         uint64          `json:"id" gorm:"primaryKey"`
 	Name       string          `json:"name" gorm:"size:64;not null"`
 	Type       string          `json:"type" gorm:"size:32;not null"`       // local/minio/s3/oss
 	PolicyType string          `json:"policy_type" gorm:"size:32;default:hot"` // hot/cold/public/slave
-	Config     PolicyConfig    `json:"config" gorm:"type:json"`
+	Config     PolicyConfig    `json:"config" gorm:"type:text"`
 	Status     int8            `json:"status" gorm:"default:1"`
 	CreatedAt  time.Time       `json:"created_at"`
 }
@@ -48,16 +48,26 @@ type PolicyConfig struct {
 
 // Value 实现 driver.Valuer 接口, 用于写入数据库
 func (c PolicyConfig) Value() (driver.Value, error) {
-	return json.Marshal(c)
+	b, err := json.Marshal(c)
+	if err != nil {
+		return nil, err
+	}
+	return string(b), nil
 }
 
 // Scan 实现 sql.Scanner 接口, 用于从数据库读取
+// MySQL 返回 []byte, PostgreSQL/SQL Server 返回 string
 func (c *PolicyConfig) Scan(value interface{}) error {
 	if value == nil {
 		return nil
 	}
-	bytes, ok := value.([]byte)
-	if !ok {
+	var bytes []byte
+	switch v := value.(type) {
+	case []byte:
+		bytes = v
+	case string:
+		bytes = []byte(v)
+	default:
 		return fmt.Errorf("PolicyConfig.Scan: 无法将 %T 转换为 []byte", value)
 	}
 	return json.Unmarshal(bytes, c)