目录


通过go语言实现http请求


1.http.Post

import (
	"net/http"
	"net/url"
)

data := url.Values{"start":{"100"},"hobby":{"xxxx"}}
body := strings.NewReader(data.Encode())
resp,err := http.Post("127.0.0.1:9338","application/x-www-form-urlencoded",body)

net/Http包没有封装直接使用请求带header的get或者post方法,所以,要想请求中带header,只能使用NewRequest方法


2.http.NewRequest

客户端:

import (
	"net/http"
	"json"
	"IoUtil"
)
type Student struct{
	id string
	name string
}

type StudentReq struct{
	id string
	name string
}
func main() {
	data:= Student{
		id:"2ed4tg5fe35fgty3yy6uh",name:"Amber",}
	stu,err := json.Marshal(&data)
	reader := bytes.NewReader(stu)
	request,err := http.NewRequest("POST","http://192.168.1.12:8000/create",reader)
	request.Header.Set("Content-Type","application/json")
	client:=&http.Client{}
	response,err := client.Do(request)
	defer response.Body.Close()
	body,err := IoUtil.ReadAll(response.Body)
	fmt.Printf(string(body))
	
	var stuReq StudentReq 
	err = json.UnMarshal(body,&stuReq)
	fmt.Println(json.MarshalIndent(stuReq))
}

解析:

  1. stu,err := json.Marshal(&data):将data对象改为json格式
  2. reader := bytes.NewReader(stu):所以将json改为byte格式,作为body传给http请求
  3. request,err := http.NewRequest(“POST”,“http://192.168.1.12:8000/create”,reader):创建url
  4. response,err := client.Do(request):客户端发起请求,接收返回值
  5. body,err := IoUtil.ReadAll(response.Body):读取body的值,类型是byte
  6. json.MarshalIndent(stuReq):修改json为标准格式

注意(坑):
1、header里的参数是Content-Type,不要写成ContentType
2、【go http: read on closed response body 】如果发送的请求是分为2个func写的,记住defer要在IoUtil.ReadAll之后执行,否则报错

3.gorequest

这种方式适合在url里拼接参数使用param直接传递

"github.com/parnurzeal/gorequest"

func main() {
	resp,body,errs := gorequest.New().Post("http://127.0.0.1/create").Param("ip","192.168.1.4").EndBytes()
		if errs != nil || resp.StatusCode >= 300 {
			log.Errorf("fail to call api with errors %v,%+v",errs,body)
		}
	var stuReq StudentReq 
	err = json.UnMarshal(body,&stuReq)
	fmt.Println(json.MarshalIndent(stuReq))
}

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