第十章 golang http操作

与其他编程语言一样，golang也可以发送http请求，同样也有很多第三方库，本文介绍的是golang原生自带的http请求方式

1. 发送最简单的get请求，如下是访问百度http://www.baidu.com

package main

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

func main() {

	url := "http://www.baidu.com"
	method := "GET"

	client := &http.Client {
	}
	req, err := http.NewRequest(method, url, nil)

	if err != nil {
		fmt.Println(err)
		return
	}

	res, err := client.Do(req)
	if err != nil {
		fmt.Println(err)
		return
	}
	defer res.Body.Close()

	body, err := ioutil.ReadAll(res.Body)
	if err != nil {
		fmt.Println(err)
		return
	}
	fmt.Println(string(body))
}

1. 发送请求上传文件

向飞书文档上传文件

package main
import (
	"fmt"
	"io"
	"io/ioutil"
	"net/http"
	"bytes"
	"mime/multipart"
	"os"
	"path/filepath"
)

var (
	url = "https://internal-api-drive-stream.feishu.cn/space/api/box/stream/upload/all/?name=123.txt&size=6&checksum=70123830&mount_node_token=&mount_point=explorer&push_open_history_record=1&ext%255Bextra%255D=&size_checker=true"
	path = "C:/Users/Lenovo/Desktop/123.txt"
	cookie = "__tea__ug__uid=5947971649419715451; _ga=GA1.2.1006846727.1649419716; slardar_delay_type=b; _uuid_hera_ab_path_1=7108239728494772226; locale=zh-CN; trust_browser_id=bf70b95a-e143-4d7c-9d88-30a5945ec37e; Hm_lvt_e78c0cb1b97ef970304b53d2097845fd=1655016032; Hm_lpvt_e78c0cb1b97ef970304b53d2097845fd=1655016038; passport_web_did=7109985771645304835; landing_url=https://login.feishu.cn/accounts/page/login?app_id=2&query_scope=all&redi3rect_uri=https%3A%2F%2Fgg6xi50yvf.feishu.cn%2Fdocs%2FdoccnjtSAS1m3gu2F7Us5x5IOpb%3Flogin_redirect_times%3D1; is_anonymous_session=; _csrf_token=e81b6dabc41d21c76f3082d965f4ee91691a0465-1655422581; lang=zh; session=XN0YXJ0-af7q32ec77-1efb-4f00-b986-691e0df6d6b23b-WVuZA; session_list=XN0YXJ0-af7qec77-1efb-4f00-b986-691e0df6d6bb-WVuZA_XN0YXJ0-5f7g7ce2-7dddeb-4652-8107-94b9e3ha12h3-WVuZA_XN0YXJ0-af7qec77-1efb-4f00-b986-691e0df6d6bb-WVuZA; swp_csrf_token=a6bec888-df2c-4d90-8cd1-f3fd95263ab4; t_beda37=9d977c39fcf210832b015fc1e8474c9922c1d88ec15748a6d435fdf95fb21ac6d"

)

func main(){
	method := "POST"
	payload := &bytes.Buffer{}

	writer := multipart.NewWriter(payload)
	file, err := os.Open(path)
	defer file.Close()
	part, err := writer.CreateFormFile("file", filepath.Base(path))
	_, err = io.Copy(part, file)
	if err != nil {
		fmt.Println("err1 = ", err)
		return
	}
	err = writer.Close()
	if err != nil {
		fmt.Println("err2 = ", err)
		return
	}

	client := &http.Client{}
	req, err := http.NewRequest(method, url, payload)
	if err != nil {
		fmt.Println("err3 = ", err)
		return
	}
	req.Header.Add("Cookie", cookie)
	req.Header.Add("Content-Type", writer.FormDataContentType())
	resp, err := client.Do(req)
	if err != nil {
		fmt.Println("err4 = ", err)
		return
	}

	defer req.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		fmt.Println("err5 = ", err)
		return
	}
	fmt.Println(string(body))

}

结果：

{"code":0,"message":"Success","data":{"data_version":"7110367276871745537","extra":{"node_token":"nodcnr1MrFTFxYlAJ89ELlSnhV6"},"file_token":"boxcnDrUM1wNigYHn6p0Cwq3rEY","version":"7110367276871745537"}}

上传成功

3. x-www-form-urlencoded类型的请求

类似于postman这样的

package main
import (
	"fmt"
	"net/http"
	"io/ioutil"
	"strings"
)

func main(){
	url := "http://localhost:8080/form"
	method := "POST"

	payload := strings.NewReader("name=10&password=12345")
	client := &http.Client{}
	req, err := http.NewRequest(method, url, payload)
	if err != nil {
		fmt.Println("err1 = ", err)
		return
	}
	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")

	resp, err := client.Do(req)
	if err != nil {
		fmt.Println("err2 = ", err)
		return
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		fmt.Println("err3 = ", err)
		return
	}
	fmt.Println(string(body))
}

结果：

username:10,password:12345,type:post