CoreData的使用步骤

//关联上下文件，关联模型文件生成数据库

let context=NSManagedObjectContext(concurrencyType: NSManagedObjectContextConcurrencyType.MainQueueConcurrencyType)

//模型文件

let model=NSManagedObjectModel.mergedModelFromBundles(nil)

//持久化调度器

let store=NSPersistentStoreCoordinator.init(managedObjectModel: model!)

//设置沙盒路径

let doc=NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomainMask.UserDomainMask,true).last

let sqlitePath=doc!.stringByAppendingString("/company.sqlite")

//数据存储的类型和数据库存储路径

try! store.addPersistentStoreWithType(NSsqliteStoreType,configuration: nil,URL: NSURL.fileURLWithPath(sqlitePath),options: nil)

context.persistentStoreCoordinator=store

//保存对象到数据库

let sb=NSEntityDescription.insertNewObjectForEntityForName("Enployee",inManagedObjectContext: context)as! Enployee

sb.age=13

sb.name="nievvsmei"

try! context.save()

//读取信息

let request=NSFetchRequest.init(entityName:"Enployee")

let emps=try!context.executeFetchRequest(request)

for sb2 in emps{

print(sb2.age,sb2.name)

}