领域加密，领域文件解密失败，怎么回事？答案

【问题标题】：realm encription, Realm file decryption failed,what‘s wrong?领域加密，领域文件解密失败，怎么回事？
【发布时间】：2023-03-04 09:26:01
【问题描述】：

我的代码在这里：

RLMRealmConfiguration *configuration = [RLMRealmConfiguration defaultConfiguration];
NSString *filePath = [NSString stringWithFormat:@"%@",configuration.fileURL];
NSString *dateBaseName = @"aaa";
configuration.fileURL = [NSURL URLWithString:[[[filePath stringByDeletingLastPathComponent]
                                               stringByAppendingPathComponent:dateBaseName]
                                              stringByAppendingPathExtension:@"realm"]];
 configuration.encryptionKey = [self getEncriptionKey];
[RLMRealmConfiguration setDefaultConfiguration:configuration];
NSError *err = nil;
RLMRealm *realm = [RLMRealm realmWithConfiguration:configuration
                                             error:&err];
if (!realm) {
    NSLog(@"Error opening realm: %@", err);
}

但是当我迁移数据库时，似乎“领域文件解密失败”，应用程序崩溃了。

我的迁移代码在这里：

RLMRealmConfiguration *configuration = [RLMRealmConfiguration defaultConfiguration];
configuration.schemaVersion  = 3;
configuration.encryptionKey = [self getEncriptionKey];
configuration.migrationBlock = migrationBlock;
[configuration setDeleteRealmIfMigrationNeeded:YES];
[RLMRealmConfiguration setDefaultConfiguration:configuration];

帮帮我！！！

【问题讨论】：

标签： ios realm realm-migration

【解决方案1】：

你什么时候执行你的迁移代码？

您的代码应如下所示：

RLMRealmConfiguration *configuration = [RLMRealmConfiguration defaultConfiguration];

NSString *filePath = [NSString stringWithFormat:@"%@",configuration.fileURL];
NSString *dateBaseName = @"aaa";

configuration.fileURL = [NSURL URLWithString:[[[filePath stringByDeletingLastPathComponent]
                                               stringByAppendingPathComponent:dateBaseName]
                                              stringByAppendingPathExtension:@"realm"]];
configuration.encryptionKey = [self getEncriptionKey];
configuration.schemaVersion  = 3;
configuration.migrationBlock = migrationBlock;

[RLMRealmConfiguration setDefaultConfiguration:configuration];

NSError *err = nil;
RLMRealm *realm = [RLMRealm realmWithConfiguration:configuration
                                             error:&err];
if (!realm) {
    NSLog(@"Error opening realm: %@", err);
}

还要注意[configuration setDeleteRealmIfMigrationNeeded:YES]; 会删除 Realm 文件，以防需要迁移并且不会执行迁移。

【讨论】：