将plist文件写到docmentc目录下的方法

#define APP_CACHES_PATH             

[NSSearchPathForDirectoriesInDomains (NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0]

- (void)writeDoubanAlbumDataToJSON{

    NSString *path = [[NSBundlemainBundle]pathForResource:@"DoubanAlbumData_Local"ofType:@"plist"];

    NSDictionary *dic = [NSDictionarydictionaryWithContentsOfFile:path];

    

    path = [APP_CACHES_PATHstringByAppendingPathComponent:@"JSON"];

    

   NSLog(@"%@",path);

    

   NSString *text = [dic JSONString];

    [textwriteToFile:path

          atomically:YES

             encoding:NSUTF8StringEncoding

               error:nil];

}