/
example_test.go
110 lines (96 loc) · 2.38 KB
/
example_test.go
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package goquery_test
import (
"fmt"
"log"
"net/http"
"os"
"strings"
"github.com/PuerkitoBio/goquery"
)
// This example scrapes the reviews shown on the home page of metalsucks.net.
func Example() {
// Request the HTML page.
res, err := http.Get("http://metalsucks.net")
if err != nil {
log.Fatal(err)
}
defer res.Body.Close()
if res.StatusCode != 200 {
log.Fatalf("status code error: %d %s", res.StatusCode, res.Status)
}
// Load the HTML document
doc, err := goquery.NewDocumentFromReader(res.Body)
if err != nil {
log.Fatal(err)
}
// Find the review items
doc.Find(".sidebar-reviews article .content-block").Each(func(i int, s *goquery.Selection) {
// For each item found, get the band and title
band := s.Find("a").Text()
title := s.Find("i").Text()
fmt.Printf("Review %d: %s - %s\n", i, band, title)
})
// To see the output of the Example while running the test suite (go test), simply
// remove the leading "x" before Output on the next line. This will cause the
// example to fail (all the "real" tests should pass).
// xOutput: voluntarily fail the Example output.
}
// This example shows how to use NewDocumentFromReader from a file.
func ExampleNewDocumentFromReader_file() {
// create from a file
f, err := os.Open("some/file.html")
if err != nil {
log.Fatal(err)
}
defer f.Close()
doc, err := goquery.NewDocumentFromReader(f)
if err != nil {
log.Fatal(err)
}
// use the goquery document...
_ = doc.Find("h1")
}
// This example shows how to use NewDocumentFromReader from a string.
func ExampleNewDocumentFromReader_string() {
// create from a string
data := `
<html>
<head>
<title>My document</title>
</head>
<body>
<h1>Header</h1>
</body>
</html>`
doc, err := goquery.NewDocumentFromReader(strings.NewReader(data))
if err != nil {
log.Fatal(err)
}
header := doc.Find("h1").Text()
fmt.Println(header)
// Output: Header
}
func ExampleSingle() {
html := `
<html>
<body>
<div>1</div>
<div>2</div>
<div>3</div>
</body>
</html>
`
doc, err := goquery.NewDocumentFromReader(strings.NewReader(html))
if err != nil {
log.Fatal(err)
}
// By default, the selector string selects all matching nodes
multiSel := doc.Find("div")
fmt.Println(multiSel.Text())
// Using goquery.Single, only the first match is selected
singleSel := doc.FindMatcher(goquery.Single("div"))
fmt.Println(singleSel.Text())
// Output:
// 123
// 1
}