XQuery is a package to extract data from HTML and XML using XPath selectors.
go get -u github.com/antchfx/xquery
This package use golang html package to parse a HTML document.
| Method | Descript |
|---|---|
| LoadURL(url string) *html.Node | Loads the HTML document from the specified URL |
| Find(*html.Node, expr string) []*html.Node | Searches all the html.Node that matches the specified XPath expression expr |
| FindOne(*html.Node, expr string) *html.Node | Searches the html.Node and returns a first matched node |
| FindEach(*html.Node, expr string,cb func(int, *html.Node)) | Searches all the matched html.Node and to pass its a callback function cb |
| OutputHTML(*html.Node) string | Returns html format output of this html.Node |
| InnerText(*html.Node) string | Returns text without html tag of this html.Node |
package main
import (
"golang.org/x/net/html"
"github.com/antchfx/xquery/html"
)
func main() {
s:=`<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph.</p>
</body>
</html>`
root, err := html.Parse(strings.NewReader(s))
if err != nil {
panic(err)
}
node := htmlquery.FindOne(root, "//title")
fmt.Println(htmlquery.InnerText(node))
}This package is similar to HTML query package, its implemented load XML document and parseing.
| Method | Descript |
|---|---|
| LoadURL(url string) (*Node, error) | Loads the XML document from the specified URL |
| ParseXML(io.Reader) (*Node, error) | Parses the specified io.Reader to the XML document. |
| Find(*Node, expr string) []*Node | Searches all the xmlquery.Node that matches the specified XPath expression expr |
| FindOne(*Node, expr string) *html.Node | Searches the xmlquery.Node and returns a first matched node |
| FindEach(*Node, expr string,cb func(int, *Node)) | Searches all the matched Node and to pass its a callback function cb |
| SelectElements(name string)[]*Node | Finds child elements with the specified element name |
| SelectElement(name string)*Node | Finds child elements with the specified element name |
| SelectAttr(name string)string | Returns the attribute value with the specified attribute name |
| OutputHTML() string | Returns html format output of this node |
| InnerText() string | Returns text without xml element tag of this Node |
package main
import (
"github.com/antchfx/xquery/xml"
)
func main() {
s:=`<?xml version="1.0" encoding="UTF-8"?>
<bookstore>
<book category="cooking">
<title lang="en">Everyday Italian</title>
<author>Giada De Laurentiis</author>
<year>2005</year>
<price>30.00</price>
</book>
......
</bookstore>`
root, err := xmlquery.ParseXML(strings.NewReader(s))
if err != nil {
panic(err)
}
node := xmlquery.FindOne(root, "//book[@category='cooking']")
fmt.Println(node.InnerText())
}
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