NSString *path = [[NSBundle mainBundle] pathForResource:xmlName ofType:@"xml"];

    NSFileHandle *file = [NSFileHandle fileHandleForReadingAtPath:path];

    NSData *data = [file readDataToEndOfFile];

    GDataXMLDocument *doucument = [[GDataXMLDocument alloc]initWithData:data options: error:nil];

    GDataXMLElement *rootElement = [doucument rootElement];

    NSArray *booksElement = [rootElement elementsForName:@"book"];

    NSMutableArray *books = [NSMutableArray array];

    for (GDataXMLElement *element in booksElement) {

        WJLBookModel *book = [[WJLBookModel alloc] init];

        book.bookID = [[[element attributeForName:@"id"] stringValue] integerValue];

        book.title = [[[element elementsForName:@"title"] lastObject] stringValue];

        book.author = [[[element elementsForName:@"author"] lastObject]stringValue];

        book.remark = [[[element elementsForName:@"remark"] lastObject] stringValue];

        [books addObject:book];

    }

    return [books copy]