Dart

Fetch ISBN XML from isbndb.com and Parse

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Demonstrates sending a query to isbndb.com and parsing the XML response. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final http = CkHttp();

  // The access_key in this URL is a valid access key, but limited to 100 queries per day.
  // If the key does not work, it may be that others were testing and exhausted the limit.
  final String strXml;
  try {
    strXml = http.quickGetStr('http://isbndb.com/api/books.xml?access_key=OV8L2Y9I&results=details&index1=isbn&value1=0443074348');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final xml = CkXml();
  xml.loadXml(strXml);

  // The XML returned for this URL is the following:

  // <?xml version="1.0" encoding="UTF-8" ?>

  // <ISBNdb server_time="2007-10-25T14:07:25Z">
  //     <BookList total_results="1" page_size="10" page_number="1" shown_results="1">
  //         <BookData book_id="diagnostic_histopathology_of_tumors_2_volume_set_with_cd_rom" isbn="0443074348">
  //             <Title>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs</Title>
  //             <TitleLong>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs (Diagnostic Histopathology of Tumors (Fletcher))</TitleLong>
  //             <AuthorsText>Christopher D. M. Fletcher (Editor)</AuthorsText>
  //             <PublisherText publisher_id="churchill_livingstone">Churchill Livingstone</PublisherText>
  //             <Details dewey_decimal="616" physical_description_text="2166 pages" language="" edition_info="Hardcover; 2007-03-13" dewey_decimal_normalized="616" lcc_number="" change_time="2006-12-13T14:53:42Z" price_time="2007-10-25T01:12:13Z" />
  //         </BookData>
  //     </BookList>
  // </ISBNdb>

  // First, navigate to the BookData node:
  xml.firstChild2();
  xml.firstChild2();

  // Show the Title and AuthorsText:
  print(xml.getChildContent('Title'));
  print(xml.getChildContent('AuthorsText'));

  // Show the publisher_id attribute of the PublisherText node:
  final xml2 = xml.findChild('PublisherText');
  print(xml2.getAttrValue('publisher_id'));

  // Save the XML to a file:
  xml.saveXml('book.xml');
}