掌握Go语言文档中的net/http.Client函数实现自定义HTTP客户端

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

client := &http.Client{}

// 创建自定义Transport
transport := &http.Transport{
        Proxy: http.ProxyFromEnvironment,
    }
// 创建自定义Client
client := &http.Client{
        Transport: transport,
        Timeout:   time.Second * 10,
}

resp, err := client.Do(req)
if err != nil {
    fmt.Println("发送请求失败:", err)
    return
}
defer resp.Body.Close()

fmt.Println("Response status:", resp.StatusCode)
fmt.Println("Response header:", resp.Header)

body, err := ioutil.ReadAll(resp.Body)
if err != nil {
    fmt.Println("读取响应失败:", err)
    return
}
fmt.Println(string(body))

package main

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

func main() {
    // 创建自定义Transport
    transport := &http.Transport{
        Proxy: http.ProxyFromEnvironment,
    }

    // 创建自定义Client
    client := &http.Client{
        Transport: transport,
        Timeout:   time.Second * 10,
    }

    // 创建HTTP请求
    req, err := http.NewRequest("GET", "http://www.example.com", nil)
    if err != nil {
        fmt.Println("创建请求失败:", err)
        return
    }

    // 发送HTTP请求
    resp, err := client.Do(req)
    if err != nil {
        fmt.Println("发送请求失败:", err)
        return
    }
    defer resp.Body.Close()

    // 获取响应状态码和头信息
    fmt.Println("Response status:", resp.StatusCode)
    fmt.Println("Response header:", resp.Header)

    // 读取响应体内容
    body, err := ioutil.ReadAll(resp.Body)
    if err != nil {
        fmt.Println("读取响应失败:", err)
        return
    }

    fmt.Println(string(body))
}