How to extract JSON data from HTML using goquery in Golang?

Methods to use goquery to extract JSON data from HTML in Go are: Install goquery library: go get -u github.com/PuerkitoBio/goquery Load HTML document: goquery.NewDocument(htmlURL) Select elements containing JSON data: doc .Find(selector) gets JSON data: jsonDataElement.Text()

How to use goquery to extract JSON data from HTML in Golang?

Goquery is a Go library that allows you to parse, manipulate, and query HTML in a jQuery-like manner. It is useful for extracting JSON data from HTML.

Installation goquery

go get -u github.com/PuerkitoBio/goquery

Practical case

Let us consider a practical case of extracting JSON data from an HTML page. Suppose we have a page that contains the following JSON data:

<div id="json-data">
  {
    "name": "John Doe",
    "age": 30,
    "city": "New York"
  }
</div>

Using goquery, we can easily extract this JSON data:

package main

import (
    "fmt"
    "log"

    "github.com/PuerkitoBio/goquery"
)

func main() {
    // 加载 HTML 文档
    doc, err := goquery.NewDocument("https://example.com/page.html")
    if err != nil {
        log.Fatal(err)
    }

    // 从 HTML 中选择包含 JSON 数据的元素
    jsonDataElement := doc.Find("#json-data")

    // 获取 JSON 数据
    jsonData := jsonDataElement.Text()

    // 打印 JSON 数据
    fmt.Println(jsonData)
}

Output:

{
  "name": "John Doe",
  "age": 30,
  "city": "New York"
}

Conclusion

Extracting JSON data from HTML using goquery is very simple. Just load the HTML document, select the element containing the JSON data, and get the data. This is useful for automating tasks and extracting data from the network.

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