How Can I Retrieve Webpage Content as a String Using Go?

Obtaining Webpage Content as a String with Go

Introduction

In the world of web development, accessing the content of a webpage is often a crucial step for various tasks. Go, a versatile programming language, provides robust libraries for accomplishing this task.

Creating the OnPage Function

Your objective is to devise a function, OnPage, that takes a webpage's URL as a parameter and returns its content as a string. This string can then be processed and manipulated as desired.

Leveraging the HTTP Package

To establish a connection with a webpage and retrieve its content, Go's http package is indispensable. It provides the essential tools for sending HTTP requests and receiving responses.

Implementing OnPage Functionality

The following code snippet demonstrates how to implement the OnPage function:

package main

import (
    "fmt"
    "io/ioutil"
    "log"
    "net/http"
)

func OnPage(link string) string {
    // Establish a connection with the webpage via HTTP GET
    res, err := http.Get(link)
    if err != nil {
        log.Fatal(err)
    }

    // Read the response body, which contains the webpage's content
    content, err := io.ReadAll(res.Body)
    if err != nil {
        log.Fatal(err)
    }

    // Close the response body
    res.Body.Close()

    // Convert the content into a string and return it
    return string(content)
}

func main() {
    // Example usage: retrieve the content of the BBC News UK webpage
    fmt.Println(OnPage("http://www.bbc.co.uk/news/uk-england-38003934"))
}

This enhanced implementation constructs an HTTP request, sends it to the specified URL, and retrieves the response body containing the webpage's content. It then converts the response content into a string and returns it. The main function demonstrates the function's usage by fetching the content of a webpage and printing it to the console.

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