CoreData Swift：崩溃：SQLite 错误 code:14、'unable to open database file'

Question

我正在使用 swift 2.0 和 Xcode 7。我想将 JSON 文件中的名称存储在 CoreData 中。

我成功将数据保存到我的 CoreData 模型中，但在值编号 1272 或 1273 之后，我的应用程序崩溃了。

代码如下：

for (key,subJson):(String, JSON) in json {
                if let name = subJson["nom"].string {
                    print("key : \(key)")
                    self.savePerson(name)
                }
}

 func savePerson(name: String) {
    let appDelegate =
    UIApplication.sharedApplication().delegate as! AppDelegate
    let managedContext = appDelegate.managedObjectContext
    let entity =  NSEntityDescription.entityForName("Person",
        inManagedObjectContext:
        managedContext)
    let person = NSManagedObject(entity: entity!,
        insertIntoManagedObjectContext:managedContext)
    person.setValue(name, forKey: "name")
    do {
        try AppDelegate().managedObjectContext.save()
    } catch {
        fatalError("Failure to save context: \(error)")
    }
    people.append(person)
}

我试着用断点看，这是1272或1273键处的程序:

--> [savePerson()] try AppDelegate().managedObjectContext.save()
--> [AppDelegate] lazy var managedObjectContext: NSManagedObjectContext =
--> [AppDelegate][managedObjectContext] let coordinator = self.persistentStoreCoordinator

这里是崩溃！我查了一下，这个名字确实存在，它不是零。我试图让我的代码休眠，但并不总是在同一时刻。你觉得这是速度的问题吗？

否则，你知道为什么吗？

日志是：

CoreData: error: (14) I/O error for database at     /.../.../.../SingleViewCoreData.sqlite.  SQLite error code:14, 'unable to open database file'
2015-09-22 23:59:59.774 testAlamofire2[8765:351886] CoreData: error: Encountered exception I/O error for database at /.../.../.../SingleViewCoreData.sqlite.  SQLite error code:14, 'unable to open database file' with userInfo {
NSFilePath = "/.../.../.../.../SingleViewCoreData.sqlite";
NSSQLiteErrorDomain = 14;
} while checking table name from store: <NSSQLiteConnection: 0x7f8e2d677ee0>
2015-09-22 23:59:59.779 testAlamofire2[8765:351886] CoreData: error: -addPersistentStoreWithType:SQLite configuration:(null) URL:file:///.../.../.../.../SingleViewCoreData.sqlite options:(null) ... returned error Error Domain=NSCocoaErrorDomain Code=256 "(null)" UserInfo={NSSQLiteErrorDomain=14, NSUnderlyingException=I/O error for database at .../.../.../SingleViewCoreData.sqlite.  SQLite error code:14, 'unable to open database file'} with userInfo dictionary {
NSSQLiteErrorDomain = 14;
NSUnderlyingException = "I/O error for database at /.../.../...SingleViewCoreData.sqlite.  SQLite error code:14, 'unable to open database file'";
}
2015-09-22 23:59:59.780 testAlamofire2[8765:351886] Unresolved error Error Domain=YOUR_ERROR_DOMAIN Code=9999 "Failed to initialize the application's saved data" UserInfo={NSLocalizedDescription=Failed to initialize the application's saved data, NSLocalizedFailureReason=There was an error creating or loading the application's saved data., NSUnderlyingError=0x7f8e2d6772d0 {Error Domain=NSCocoaErrorDomain Code=256 "(null)" UserInfo={NSSQLiteErrorDomain=14, NSUnderlyingException=I/O error for database at /.../.../.../SingleViewCoreData.sqlite.  SQLite error code:14, 'unable to open database file'}}}, [NSLocalizedDescription: Failed to initialize the application's saved data, NSLocalizedFailureReason: There was an error creating or loading the application's saved data., NSUnderlyingError: Error Domain=NSCocoaErrorDomain Code=256 "(null)" UserInfo={NSSQLiteErrorDomain=14, NSUnderlyingException=I/O error for database at /.../.../.../.../SingleViewCoreData.sqlite.  SQLite error code:14, 'unable to open database file'}]

编辑：

我找到了这个page，不知道有没有帮助。（旧）

Answer 1

我认为问题可能是因为你的save语句正在创建应用程序委托的新实例，每次你保存一个新人：

try AppDelegate().managedObjectContext.save()

尝试使用您之前使用的相同的现有实例：

try managedContext.save()

CoreData Swift：崩溃：SQLite 错误 code:14、'unable to open database file'

CoreData Swift : Crash : SQLite error code:14, 'unable to open database file'

sqlite

core-data

ios

swift