objective-c - 将保管箱文件保存在路径中

Question

这给了我...

NSString *filename2 = [NSString stringWithFormat:@"/newFile.json"];

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,     NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *getImagePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@", filename2]];

[self.restClient loadFile:filename2 intoPath:getImagePath];


NSString *fileContent = [[NSString alloc] initWithContentsOfFile:getImagePath];  

SBJsonParser *parser = [[SBJsonParser alloc] init];

NSDictionary *data = (NSDictionary *) [parser objectWithString:fileContent error:nil];  

...这个错误：

文件加载到路径：（空）

...但为什么？？这段代码正在查看确实加载。该文件在保管箱中，所以有什么问题