为何archiveRootObject和unarchiveObjectWithFile正常,而archivedDataWithRootObject和unarchivedObjectOfClasses一直报错。[NSKeyedArchiver archiveRootObject:account toFile:path];
和`c
PPAccountModel *account = [NSKeyedUnarchiver unarchiveObjectWithFile:path];
```c
'archiveRootObject:toFile:' is deprecated: first deprecated in iOS 12.0 - Use +archivedDataWithRootObject:requiringSecureCoding:error: and -writeToURL:options:error: instead
'unarchiveObjectWithFile:' is deprecated: first deprecated in iOS 12.0 - Use +unarchivedObjectOfClass:fromData:error: instead
替换很简单,但是会一堆问题等着你解决,序列化和反序列全失败。
先说能简单解决的序列化(归档):
NSString *path = [self PathWithFileName:@"啊啊啊.data"];//拓展名可以自己随便取
DYGlobleData.token = @"";
PPAccountModel *account = nil;
// [NSKeyedArchiver archiveRootObject:account toFile:path];
NSError *error = nil;
NSData *archiveData = [NSKeyedArchiver archivedDataWithRootObject:account requiringSecureCoding:YES error:&error];
if (archiveData == nil || error) {
NSLog(@"归档失败:%@", error);
}
BOOL isSuccess = [archiveData writeToFile:path atomically:YES];
if(!isSuccess)
{
NSLog(@"归档存储失败:%d", isSuccess);
}
简单吧!也不是很复杂。首先失败的提示信息如下:
Error Domain=NSCocoaErrorDomain Code=4866 "未能写入数据,因为它的格式不正确。" UserInfo={NSUnderlyingError=0x2835675a0 {Error Domain=NSCocoaErrorDomain Code=4864 "This decoder will only decode classes that adopt NSSecureCoding. Class 'PPAccountModel' does not adopt it." UserInfo={NSDebugDescription=This decoder will only decode classes that adopt NSSecureCoding. Class 'PPAccountModel' does not adopt it.}}}
这是啥鬼?搞了半天查出来了,是序列化时采用了requiringSecureCoding为YES。但是序列化的类采用的是NSCoding协议,可以设置成NO,这样能序列化成功,但是反序列化就不能保证怎么样了。那就遵循NSSecureCoding协议吧!改造也很简单,在头文件换成NSSecureCoding,在实现文件写上supportsSecureCoding函数具体代码:
@interface PPAccountModel : NSObject<NSCoding>
+ (BOOL)supportsSecureCoding {
return YES;
}
遇到空数组序列化失败:
[aCoder encodeObject:[NSMutableArray array] forKey:@"usersAvatar"];
修改为:
if(isCommonUnitEmptyArray(self.usersAvatar))
{
[aCoder encodeObject:@"" forKey:@"usersAvatar"];
}
else
{
[aCoder encodeObject:self.usersAvatar forKey:@"usersAvatar"];
}
也很简单啊!序列化搞定。
反序列化坑更多。序列化成功但是反序列化错误:
反序列化:
//得到用户信息
-(PPAccountModel *)getAccountInfo;
{
FLDDLogDebug(@"函数");
NSString *path = [self PathWithFileName:@"啊啊啊.data"];//拓展名可以自己随便取
// PPAccountModel *account = [NSKeyedUnarchiver unarchiveObjectWithFile:path];
// NSData转array,转dictionary,转NSString
NSError *err = nil;
NSData *archiveData = [NSData dataWithContentsOfFile:path];
if(!archiveData)
{
return nil;
}
PPAccountModel *account = [NSKeyedUnarchiver unarchivedObjectOfClasses:[NSSet setWithArray:@[NSArray.class,NSDictionary.class, NSString.class, UIFont.class, NSMutableArray.class, NSMutableDictionary.class, NSMutableString.class, UIColor.class, NSMutableData.class, NSData.class, NSNull.class, NSValue.class,NSDate.class, XQUserModel.class, NSNumber.class, PPAccountModel.class, XQTimeMapModel.class]] fromData:archiveData error:&err];
_account = account;
if (archiveData == nil || err) {
NSLog(@"反序列化失败:%@", err);
}
// if((account == nil) || (kUserLogin))
NSLog(@"account = %@",account);
if(account == nil)
{
// [[NSUserDefaults standardUserDefaults] setBool:NO forKey:kLoginStateKey];
// [[NSUserDefaults standardUserDefaults] removeObjectForKey:kLoginToken];
// [[NSUserDefaults standardUserDefaults] synchronize];
self.isLogin = NO;
DYGlobleData.token = @"";
[BITSingleObject sharedInstance].token = @"";
}
else
{
self.isLogin = YES;
[BITSingleObject sharedInstance].token = account.token;
DYGlobleData.token = account.token;
[account fetchRoleData];
}
return account;
}
首先保证把参与序列化的所有对象类型都列举出来,写少了就4865 错误。但是全部列举万了还是4865错误,错误信息如下:文章来源:https://www.toymoban.com/news/detail-600193.html
object c -[NSKeyedUnarchiver decodeObjectForKey:]: missing class information for object
到处查资料也没有查到解决方案,我试了半天我快放弃了,才找到原因。因为序列化的用户信息是反序列化后给单例对象了,这个用户信息增加了一些不需要序列化的成员变量,把它当用户相关的单例成员变量了,没有实现序列化和反序列化。我把这些变量去掉或序列化就反序列化正常了。
注意:子类的序列化和反序列化时需要把父类的变量也序列化和反序列化。文章来源地址https://www.toymoban.com/news/detail-600193.html
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