golang实现http的get和post请求

实现http的get请求：

package main

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

func main() {
	resp, err := http.Get("http://example.com/")
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}

	fmt.Println(string(body))
}

实现http的post请求：

package main

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

func main() {
	url := "http://example.com/"
	data := []byte(`{"name":"John","age":30,"city":"New York"}`)

	req, err := http.NewRequest("POST", url, bytes.NewBuffer(data))
	if err != nil {
		fmt.Println("Error:", err)
		return
	}

	req.Header.Set("Content-Type", "application/json")

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}

	fmt.Println(string(body))
}
``