package main

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

func main() {
    url := "https://httpbin.org/headers"

    // 创建一个新的GET请求
    req, err := http.NewRequest("GET", url, nil)
    if err != nil {
        log.Fatal("创建请求失败:", err)
    }

    // 设置自定义请求头
    req.Header.Set("User-Agent", "MyApp/1.0")
    req.Header.Set("X-API-Key", "abc123xyz")
    req.Header.Set("Accept", "application/json")

    // 发送请求
    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        log.Fatal("请求发送失败:", err)
    }
    defer resp.Body.Close()

    // 读取响应内容
    body, err := io.ReadAll(resp.Body)
    if err != nil {
        log.Fatal("读取响应失败:", err)
    }

    fmt.Println("状态码:", resp.Status)
    fmt.Println("响应体:", string(body))
}

jsonStr := `{"name": "张三", "age": 25}`
req, err := http.NewRequest("POST", "https://httpbin.org/post", strings.NewReader(jsonStr))
if err != nil {
    log.Fatal(err)
}

// 设置必要的请求头
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Authorization", "Bearer token123")
req.Header.Set("X-Request-ID", "55667788")

client := &http.Client{}
resp, err := client.Do(req)