B4X

Fetch ISBN XML from isbndb.com and Parse

See more HTTP Examples

Demonstrates sending a query to isbndb.com and parsing the XML response. B4X

Dim success As Boolean = False

'  This example assumes the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

Dim http As ChilkatHttp
http.Initialize("http")

'  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.
Dim strXml As String = http.QuickGetStr("http://isbndb.com/api/books.xml?access_key=OV8L2Y9I&results=details&index1=isbn&value1=0443074348")
If http.LastMethodSuccess <> True Then
    Log(http.LastErrorText)
    Return
End If


Dim xml As ChilkatXml
xml.Initialize
success = 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:
success = xml.FirstChild2
success = xml.FirstChild2

'  Show the Title and AuthorsText:
Log(xml.GetChildContent("Title"))
Log(xml.GetChildContent("AuthorsText"))

'  Show the publisher_id attribute of the PublisherText node:
Dim xml2 As ChilkatXml
xml2 = xml.FindChild("PublisherText")
Log(xml2.GetAttrValue("publisher_id"))



'  Save the XML to a file:
success = xml.SaveXml("book.xml")