golang NewRequest/gorequest实现http请求的示例代码

通过go语言实现http请求

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

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() {
?? ?stu := Student{
?? ??? ?id:"2ed4tg5fe35fgty3yy6uh",
?? ??? ?name:"amber",
?? ?}
?? ?stu,err := json.Marshal(&stu)
?? ?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：

• stu,err := json.Marshal(&stu)：将stu对象改为json格式

• reader := bytes.NewReader(stu)：所以将json改为byte格式，作为body传给http请求

• request,err := http.NewRequest(“POST”, “http://192.168.1.12:8000/create”, reader)：创建url

• response,err := client.Do(request)：客户端发起请求，接收返回值

• body,err := ioutil.ReadAll(response.Body)：读取body的值，类型是byte

• 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

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))
}

来源：https://blog.csdn.net/ambzheng/article/details/104483754