英文:
How to print text between css selectors in golang using html package?
问题
我有一个HTML文档：
<value>1,2,3</value><value>,1,3,5</value>
我想使用下面的代码提取文本，但它只打印出'value'标签（CSS选择器）。如何使用Golang的html包打印标签之间的文本而不是标签本身？
z := html.NewTokenizer(b)for {tt := z.Next()switch {case tt == html.ErrorToken:returncase tt == html.StartTagToken:t := z.Token()isAnchor := t.Data == "value"if isAnchor {fmt.Println(t.Data)}}}
英文:
I have html document
<value>1,2,3</value><value>,1,3,5</value>
and what to extract text with code below but it only prints 'value' tags (css selectors). How to print the text from between tags instead using golang html package ?
z := html.NewTokenizer(b)for {tt := z.Next()switch {case tt == html.ErrorToken:returncase tt == html.StartTagToken:t := z.Token()isAnchor := t.Data == "value"if isAnchor {fmt.Println(t.Data)}}}
答案1
得分: 4
这对我来说似乎有效：
r := strings.NewReader("<value>1,2,3</value><value>,1,3,5</value>")doc, err := html.Parse(r)if err != nil {log.Fatal(err)}var f func(*html.Node)f = func(n *html.Node) {if n.Type == html.ElementNode && n.Data == "value" {fmt.Println(n.FirstChild.Data)}for c := n.FirstChild; c != nil; c = c.NextSibling {f(c)}}f(doc)
我认为关键是在找到"value"节点后获取FirstChild。
英文:
This seems to work for me:
r := strings.NewReader("<value>1,2,3</value><value>,1,3,5</value>")doc, err := html.Parse(r)if err != nil {log.Fatal(err)}var f func(*html.Node)f = func(n *html.Node) {if n.Type == html.ElementNode && n.Data == "value" {fmt.Println(n.FirstChild.Data)}for c := n.FirstChild; c != nil; c = c.NextSibling {f(c)}}f(doc)
I think the key is grabbing the FirstChild after finding the "value" node.
答案2
得分: 1
你必须在下一个Token上使用Text()方法。
如果isAnchor := t.Data == "value"; isAnchor {z.Next()fmt.Println(z.Text())}
英文:
You have to use Text() method on the next Token.
if isAnchor := t.Data == "value"; isAnchor {z.Next()fmt.Println(z.Text())}
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