PowerBuilder

Extract HTML Title, Description, Keywords

See more Spider Examples

This example expands on the "getting started" example by showing how to access the HTML title, description, and keywords within each page spidered. These are the contents of the META tags for keywords, description, and title found in the HTML header. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Spider
integer i

li_Success = 0

loo_Spider = create oleobject
li_rc = loo_Spider.ConnectToNewObject("Chilkat.Spider")
if li_rc < 0 then
    destroy loo_Spider
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// The spider object crawls a single web site at a time.  As you'll see
// in later examples, you can collect outbound links and use them to 
// crawl the web.  For now, we'll simply spider 10 pages of chilkatsoft.com
loo_Spider.Initialize("www.chilkatsoft.com")

// Add the 1st URL:
loo_Spider.AddUnspidered("http://www.chilkatsoft.com/")

// Begin crawling the site by calling CrawlNext repeatedly.

for i = 0 to 9

    li_Success = loo_Spider.CrawlNext()
    if li_Success = 1 then
        // Show the URL of the page just spidered.
        Write-Debug loo_Spider.LastUrl

        // The HTML META keywords, title, and description are available in these properties:
        Write-Debug loo_Spider.LastHtmlTitle
        Write-Debug loo_Spider.LastHtmlDescription
        Write-Debug loo_Spider.LastHtmlKeywords

        // The HTML is available in the LastHtml property
    else
        // Did we get an error or are there no more URLs to crawl?
        if loo_Spider.NumUnspidered = 0 then
            Write-Debug "No more URLs to spider"
        else
            Write-Debug loo_Spider.LastErrorText
        end if

    end if

    // Sleep 1 second before spidering the next URL.
    loo_Spider.SleepMs(1000)
next


destroy loo_Spider