将本地JSON文件解析为Coredata会导致错误

import CoreData

// 1. 解析JSON文件
guard let url = Bundle.main.url(forResource: "data", withExtension: "json"),
      let data = try? Data(contentsOf: url),
      let json = try? JSONSerialization.jsonObject(with: data, options: []) as? [[String: Any]] else {
    // 处理解析错误
    return
}

// 2. 创建Core Data上下文
guard let appDelegate = UIApplication.shared.delegate as? AppDelegate else {
    return
}
let context = appDelegate.persistentContainer.viewContext

// 3. 创建Core Data实体对象
for item in json {
    guard let entity = NSEntityDescription.entity(forEntityName: "EntityName", in: context),
          let coreDataObject = NSManagedObject(entity: entity, insertInto: context) as? EntityName else {
        // 处理实体对象创建错误
        continue
    }
    
    // 4. 填充数据到实体对象的属性中
    coreDataObject.property1 = item["property1"] as? String
    coreDataObject.property2 = item["property2"] as? Int
    
    // 5. 保存数据
    do {
        try context.save()
    } catch {
        // 处理保存错误
    }
}