Request Specifies the Settings of HTTP request parameters

We can customize the body of the HTTP request we send. Here are some sample code

package main

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

func printBody(r *http.Response){
   content, err := ioutil.ReadAll(r.Body)
   iferr ! =nil {
      panic(err)
   }
   fmt.Printf("%s", content)
}

// Set the request query parameters
func requestByParams(a){
   request, err := http.NewRequest(http.MethodGet, "http://httpbin.org/get".nil)
   iferr ! =nil {
      panic(err)
   }
   params := make(url.Values)
   params.Add("name"."yuan")
   params.Add("age"."18")
   request.URL.RawQuery = params.Encode()
   fmt.Println(params.Encode())

   resp, err := http.DefaultClient.Do(request)
   iferr ! =nil {
      panic(err)
   }
   defer func(a) {_ = resp.Body.Close()}()
   printBody(resp)
   / / {
   // "args": {
   // "age": "18",
   // "name": "yuan"
   / /},
   // "headers": {
   // "Accept-Encoding": "gzip",
   // "Host": "httpbin.org",
   / / "the user-agent" : "Go - HTTP client / 1.1",
   // "X-Amzn-Trace-Id": "Root=1-60e46b98-58667aee5367f1aa1ca102c9"
   / /},
   / / "origin", "222.211.214.252",
   // "url": "http://httpbin.org/get?age=18&name=yuan"
   / /}
}

// Customize the request header
func reauestByHead(a){
   request, err := http.NewRequest(http.MethodGet, "http://httpbin.org/get".nil)
   iferr ! =nil {
      panic(err)
   }
   request.Header.Add("user-agent"."chrome")
   resp, err := http.DefaultClient.Do(request)
   iferr ! =nil {
      panic(err)
   }
   defer func(a) {_ = resp.Body.Close()}()
   printBody(resp)
   / / {
   // "args": {},
   // "headers": {
   // "Accept-Encoding": "gzip",
   // "Host": "httpbin.org",
   // "User-Agent": "chrome",
   // "X-Amzn-Trace-Id": "Root=1-60e46c63-22fd52047229e6175f52166c"
   / /},
   / / "origin", "222.211.214.252",
   // "url": "http://httpbin.org/get"
   / /}
}
func main(a) {
   requestByParams()
   reauestByHead()
}
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