add recursive search support
This commit is contained in:
parent
4f394e3925
commit
33b5ac9390
2 changed files with 250 additions and 12 deletions
138
scraper-nodepth.go
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138
scraper-nodepth.go
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@ -0,0 +1,138 @@
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package main
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import (
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"fmt"
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"regexp"
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"sync"
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"time"
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"github.com/go-rod/rod"
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)
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var visitedURLs = sync.Map{}
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var allLinks = sync.Map{}
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var mutex = &sync.Mutex{}
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var wg sync.WaitGroup
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func main() {
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fmt.Println("Starte das Programm...")
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startTime := time.Now()
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browser := rod.New().MustConnect()
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defer browser.MustClose()
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initialURL := "https://pad.stratum0.org/p/dc"
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fmt.Printf("Beginne mit der initialen URL: %s\n", initialURL)
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wg.Add(1)
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go extractLinksFromPage(browser, initialURL)
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wg.Wait()
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fmt.Println("\nAlle gefundenen Links:")
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linkCount := 0
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allLinks.Range(func(key, value interface{}) bool {
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fmt.Println(key)
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linkCount++
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return true
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})
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fmt.Printf("\nStatistik:\n")
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fmt.Printf("Gesamtanzahl der gefundenen Links: %d\n", linkCount)
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visitedCount := 0
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visitedURLs.Range(func(key, value interface{}) bool {
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visitedCount++
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return true
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})
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fmt.Printf("Anzahl der besuchten URLs: %d\n", visitedCount)
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fmt.Printf("Gesamtzeit: %v\n", time.Since(startTime))
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}
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func extractLinksFromPage(browser *rod.Browser, url string) {
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defer wg.Done()
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mutex.Lock()
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fmt.Printf("\nVerarbeite URL: %s\n", url)
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mutex.Unlock()
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if _, visited := visitedURLs.LoadOrStore(url, true); visited {
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mutex.Lock()
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fmt.Printf("URL bereits besucht: %s\n", url)
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mutex.Unlock()
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return
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}
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page := browser.MustPage(url)
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defer page.MustClose()
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page.MustWaitLoad()
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mutex.Lock()
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fmt.Printf("Seite geladen: %s\n", url)
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mutex.Unlock()
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// Verarbeite die Hauptseite
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processPage(page, url)
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// Verarbeite die verschachtelten iFrames
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processNestedIframes(page, url)
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}
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func processNestedIframes(page *rod.Page, sourceURL string) {
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mutex.Lock()
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fmt.Printf("Suche nach äußerem iFrame auf %s\n", sourceURL)
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mutex.Unlock()
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// Finden Sie das erste iFrame-Element
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outerIframeElement := page.MustElement("#editorcontainer > iframe:nth-child(1)")
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// Wechseln Sie zum Kontext des ersten iFrames
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outerFrame := outerIframeElement.MustFrame()
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// Warten Sie, bis der Inhalt des ersten iFrames geladen ist
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outerFrame.MustWaitLoad()
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mutex.Lock()
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fmt.Printf("Äußeres iFrame geladen auf %s\n", sourceURL)
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mutex.Unlock()
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// Verarbeite das äußere iFrame
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processPage(outerFrame, sourceURL+" (äußeres iFrame)")
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mutex.Lock()
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fmt.Printf("Suche nach innerem iFrame auf %s\n", sourceURL)
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mutex.Unlock()
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// Finden Sie das zweite iFrame-Element innerhalb des ersten iFrames
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innerIframeElement := outerFrame.MustElement("#outerdocbody > iframe:nth-child(1)")
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// Wechseln Sie zum Kontext des zweiten iFrames
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innerFrame := innerIframeElement.MustFrame()
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innerFrame.MustWaitLoad()
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mutex.Lock()
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fmt.Printf("Inneres iFrame geladen auf %s\n", sourceURL)
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mutex.Unlock()
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// Verarbeite das innere iFrame
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processPage(innerFrame, sourceURL+" (inneres iFrame)")
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}
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func processPage(page *rod.Page, sourceURL string) {
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text := page.MustElement("body").MustText()
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re := regexp.MustCompile(`https://pad\.stratum0\.org/p/dc[^\s"']+`)
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links := re.FindAllString(text, -1)
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mutex.Lock()
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fmt.Printf("Gefundene Links auf %s: %d\n", sourceURL, len(links))
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mutex.Unlock()
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for _, link := range links {
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if _, exists := allLinks.LoadOrStore(link, true); !exists {
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mutex.Lock()
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fmt.Printf("Neuer Link gefunden: %s\n", link)
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mutex.Unlock()
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wg.Add(1)
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go extractLinksFromPage(page.Browser(), link)
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}
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}
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}
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124
scraper.go
124
scraper.go
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@ -3,18 +3,96 @@ package main
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import (
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"fmt"
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"regexp"
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"time"
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"github.com/go-rod/rod"
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)
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var (
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visitedURLs = make(map[string]bool)
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allLinks = make(map[string]bool)
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maxDepth = 3 // Hier können Sie die maximale Tiefe festlegen
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)
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func main() {
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fmt.Println("Starte das Programm...")
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startTime := time.Now()
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browser := rod.New().MustConnect()
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defer browser.MustClose()
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page := browser.MustPage("https://pad.stratum0.org/p/dc") // URL der Hauptseite
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initialURL := "https://pad.stratum0.org/p/dc"
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fmt.Printf("Beginne mit der initialen URL: %s\n", initialURL)
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fmt.Printf("Maximale Tiefe: %d\n", maxDepth)
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toVisit := []struct {
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url string
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depth int
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}{{initialURL, 0}}
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for len(toVisit) > 0 {
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current := toVisit[0]
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toVisit = toVisit[1:]
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newLinks := extractLinksFromPage(browser, current.url, current.depth)
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for _, link := range newLinks {
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if !visitedURLs[link] && current.depth < maxDepth {
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toVisit = append(toVisit, struct {
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url string
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depth int
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}{link, current.depth + 1})
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}
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}
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}
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fmt.Println("\nAlle gefundenen Links:")
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for link := range allLinks {
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fmt.Println(link)
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}
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fmt.Printf("\nStatistik:\n")
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fmt.Printf("Gesamtanzahl der gefundenen Links: %d\n", len(allLinks))
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fmt.Printf("Anzahl der besuchten URLs: %d\n", len(visitedURLs))
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fmt.Printf("Gesamtzeit: %v\n", time.Since(startTime))
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}
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func extractLinksFromPage(browser *rod.Browser, url string, depth int) []string {
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fmt.Printf("\nVerarbeite URL: %s (Tiefe: %d)\n", url, depth)
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if depth > maxDepth {
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fmt.Printf("Maximale Tiefe erreicht für URL: %s\n", url)
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return nil
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}
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if visitedURLs[url] {
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fmt.Printf("URL bereits besucht: %s\n", url)
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return nil
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}
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visitedURLs[url] = true
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page := browser.MustPage(url)
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defer page.MustClose()
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page.MustWaitLoad()
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fmt.Printf("Seite geladen: %s\n", url)
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var newLinks []string
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// Verarbeite die Hauptseite
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newLinks = append(newLinks, extractLinks(page, url)...)
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// Verarbeite die verschachtelten iFrames
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newLinks = append(newLinks, processNestedIframes(page, url)...)
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return newLinks
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}
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func processNestedIframes(page *rod.Page, sourceURL string) []string {
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fmt.Printf("Suche nach äußerem iFrame auf %s\n", sourceURL)
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// Finden Sie das erste iFrame-Element
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outerIframeElement := page.MustElement("#editorcontainer > iframe:nth-child(1)") // Passen Sie den Selektor an
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outerIframeElement := page.MustElement("#editorcontainer > iframe:nth-child(1)")
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// Wechseln Sie zum Kontext des ersten iFrames
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outerFrame := outerIframeElement.MustFrame()
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@ -22,22 +100,44 @@ func main() {
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// Warten Sie, bis der Inhalt des ersten iFrames geladen ist
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outerFrame.MustWaitLoad()
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fmt.Printf("Äußeres iFrame geladen auf %s\n", sourceURL)
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// Extrahiere Links aus dem äußeren iFrame
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outerLinks := extractLinks(outerFrame, sourceURL+" (äußeres iFrame)")
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fmt.Printf("Suche nach innerem iFrame auf %s\n", sourceURL)
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// Finden Sie das zweite iFrame-Element innerhalb des ersten iFrames
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innerIframeElement := outerFrame.MustElement("#outerdocbody > iframe:nth-child(1)") // Passen Sie den Selektor an
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innerIframeElement := outerFrame.MustElement("#outerdocbody > iframe:nth-child(1)")
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// Wechseln Sie zum Kontext des zweiten iFrames
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innerFrame := innerIframeElement.MustFrame()
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innerFrame.MustWaitLoad()
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// Extrahieren Sie den Text aus dem zweiten iFrame (Benutze statt #innderdocbody auch body für jedes Element)
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text := innerFrame.MustElement("#innerdocbody").MustText()
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fmt.Printf("Inneres iFrame geladen auf %s\n", sourceURL)
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// Regex zum Finden von Links, die mit https beginnen
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re := regexp.MustCompile(`https://[\w\.-]+(?:/[\w\.-]*)*`)
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httpsLinks := re.FindAllString(text, -1)
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// Extrahiere Links aus dem inneren iFrame
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innerLinks := extractLinks(innerFrame, sourceURL+" (inneres iFrame)")
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fmt.Println("Gefundene https-Links:")
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for _, link := range httpsLinks {
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fmt.Println(link)
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}
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return append(outerLinks, innerLinks...)
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}
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func extractLinks(page *rod.Page, sourceURL string) []string {
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text := page.MustElement("body").MustText()
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re := regexp.MustCompile(`https://pad\.stratum0\.org/p/dc[^\s"']+`)
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links := re.FindAllString(text, -1)
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fmt.Printf("Gefundene Links auf %s: %d\n", sourceURL, len(links))
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var newLinks []string
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for _, link := range links {
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if !allLinks[link] {
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allLinks[link] = true
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fmt.Printf("Neuer Link gefunden: %s\n", link)
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newLinks = append(newLinks, link)
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}
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}
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return newLinks
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}
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