plist转NSDictionary

 NSPropertyListFormat format;
 NSString *errorDesc = nil;
    
 NSString *path = [[NSBundle mainBundle]  
                                      pathForResource:@"DocumentFileList" 
                                                     ofType:@"plist"];

NSData *data = [[NSData alloc] initWithContentsOfFile:path];

NSMutableDictionary *dictionary = (NSMutableDictionary *)  
  [NSPropertyListSerialization 
                                        propertyListFromData:data 
                     mutabilityOption:NSPropertyListMutableContainersAndLeaves 
                                                              format:&format  
                                                errorDescription:&errorDesc];