How to Retrieve Webpage Content as a String in Go?

Accessing Webpage Content as a String in Go

Question:

How can I retrieve the content of a webpage as a string using Go's http package?

Answer:

To accomplish this, follow these steps:

1. Utilize the http Package:

   • Start by importing the http package: import "net/http".

2. Construct an HTTP GET Request:

   • Use the http.Get(link) function to create an HTTP GET request for the specified webpage URL (stored in the link variable).

3. Receive and Read Response:

   • If the request is successful, store the response in the res variable.
   • Use io.ReadAll(res.Body) to read the content of the webpage and convert it to a byte slice.

4. Convert and Store Content:

   • Convert the byte slice into a string using string(content).
   • Return the resulting string, which represents the webpage content.

5. Handle the Response Body:

   • Remember to close the response body using res.Body.Close() to prevent resource leaks.

6. Example Code:

   package main
   
   import (
       "fmt"
       "io/ioutil"
       "log"
       "net/http"
   )
   
   func OnPage(link string) string {
       res, err := http.Get(link)
       if err != nil {
           log.Fatal(err)
       }
       content, err := io.ReadAll(res.Body)
       res.Body.Close()
       if err != nil {
           log.Fatal(err)
       }
       return string(content)
   }
   
   func main() {
       fmt.Println(OnPage("http://www.bbc.co.uk/news/uk-england-38003934"))
   }

   This example retrieves and prints the content of the BBC UK News page.

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