goquery数据选择
===
### Element 选择器
~~~go
func main() {
html := `<body>
<div>DIV1</div>
<div>DIV2</div>
<span>SPAN</span>
</body>
`
dom,err:=goquery.NewDocumentFromReader(strings.NewReader(html))
if err!=nil{
log.Fatalln(err)
}
dom.Find("div").Each(func(i int, selection *goquery.Selection) {
fmt.Println(selection.Text())
})
}
~~~
### ID 选择器
~~~go
func main() {
html := `<body>
<div id="div1">DIV1</div>
<div>DIV2</div>
<span>SPAN</span>
</body>
`
dom,err:=goquery.NewDocumentFromReader(strings.NewReader(html))
if err!=nil{
log.Fatalln(err)
}
dom.Find("#div1").Each(func(i int, selection *goquery.Selection) {
fmt.Println(selection.Text())
})
}
~~~
## Class选择器
~~~go
func main() {
html := `<body>
<div id="div1">DIV1</div>
<div class="name">DIV2</div>
<span>SPAN</span>
</body>
`
dom,err:=goquery.NewDocumentFromReader(strings.NewReader(html))
if err!=nil{
log.Fatalln(err)
}
dom.Find(".name").Each(func(i int, selection *goquery.Selection) {
fmt.Println(selection.Text())
})
}
~~~
## 属性选择器
~~~go
func main() {
html := `<body>
<div>DIV1</div>
<div class="name">DIV2</div>
<span>SPAN</span>
</body>
`
dom,err:=goquery.NewDocumentFromReader(strings.NewReader(html))
if err!=nil{
log.Fatalln(err)
}
dom.Find("div[class]").Each(func(i int, selection *goquery.Selection) {
fmt.Println(selection.Text())
})
}
~~~
| 选择器 | 说明 |
| --- | --- |
| Find(“div\[lang\]“) | 筛选含有lang属性的div元素 |
| Find(“div\[lang=zh\]“) | 筛选lang属性为zh的div元素 |
| Find(“div\[lang!=zh\]“) | 筛选lang属性不等于zh的div元素 |
| Find(“div\[lang¦=zh\]“) | 筛选lang属性为zh或者zh-开头的div元素 |
| Find(“div\[lang\*=zh\]“) | 筛选lang属性包含zh这个字符串的div元素 |
| Find(“div\[lang~=zh\]“) | 筛选lang属性包含zh这个单词的div元素，单词以空格分开的 |
| Find(“div\[lang$=zh\]“) | 筛选lang属性以zh结尾的div元素，区分大小写 |
| Find(“div\[lang^=zh\]“) | 筛选lang属性以zh开头的div元素，区分大小写 |
