goquery HTML解析库

goquery是一个使用Go语言写成的HTML解析库，可以让你像jQuery那样的方式来操作DOM文档。下面是示例：

Func ExampleScrape_MetalRevIEw() {
  // Load the HTML document (in real use, the type would be *goquery.Document)
  var doc *Document
  var e error

  if doc, e = NewDocument("HTTP://metalreview.com"); e != Nil {
    panic(e.Error())
  }

  // Find the review items (the type of the Selection would be *goquery.Selection)
  doc.Find(".slider-row:nth-child(1) .slider-item").Each(func(i int, s *Selection) {
    var band, title string
    var score float64

    // For each item found, get the band, title and score, and print it
    band = s.Find("strong").Text()
    title = s.Find("em").Text()
    if score, e = strconv.ParseFloat(s.Find(".score").Text(), 64); e != nil {
      // Not a valid float, ignore score
      fMT.Printf("Review %d: %s - %s.\n", i, band, title)
    } else {
      // Print all, including score
      fmt.Printf("Review %d: %s - %s (%2.1f).\n", i, band, title, score)
    }
  })