之前用python写各种网络请求的时候写的非常顺手，但是当打算用golang写的时候才发现好不习惯，习惯golang的用法之后也就差别不大了，下面主要整理了常用的通过golang发起的GET请求以及POST请求的代码例子：
//基本的GET请求
package main
import (
"fmt"
"io/ioutil"
"net/http"
)
func main() {
resp, err := http.Get("http://httpbin.org/get")
if err != nil {
fmt.Println(err)
return
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
fmt.Println(resp.StatusCode)
if resp.StatusCode == 200 {
fmt.Println("ok")
}
}
带参数的Get请求
package main
import (
"fmt"
"io/ioutil"
"net/http"
)
func main(){
resp, err := http.Get("http://httpbin.org/get?name=zhaofan&age=23")
if err != nil {
fmt.Println(err)
return
}
defer resp.Body.Close()
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
但是如果我们想要把一些参数做成变量而不是直接放到url中怎么操作，代码例子如下：
package main
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
)
func main(){
params := url.Values{}
Url, err := url.Parse("http://httpbin.org/get")
if err != nil {
return
}
params.Set("name","zhaofan")
params.Set("age","23")
//如果参数中有中文参数,这个方法会进行URLEncode
Url.RawQuery = params.Encode()
urlPath := Url.String()
fmt.Println(urlPath) // https://httpbin.org/get?age=23&name=zhaofan
resp,err := http.Get(urlPath)
defer resp.Body.Close()
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
解析JSON类型的返回结果
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
)
type result struct {
Args string `json:"args"`
Headers map[string]string `json:"headers"`
Origin string `json:"origin"`
Url string `json:"url"`
}
func main() {
resp, err := http.Get("http://httpbin.org/get")
if err != nil {
return
}
defer resp.Body.Close()
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
var res result
_ = json.Unmarshal(body,&res)
fmt.Printf("%#v", res)
}
GET请求添加请求头
package main
import (
"fmt"
"io/ioutil"
"net/http"
)
func main() {
client := &http.Client{}
req,_ := http.NewRequest("GET","http://httpbin.org/get",nil)
req.Header.Add("name","zhaofan")
req.Header.Add("age","3")
resp,_ := client.Do(req)
body, _ := ioutil.ReadAll(resp.Body)
fmt.Printf(string(body))
}
从上述的结果可以看出我们设置的头是成功了
{
"args": {},
"headers": {
"Accept-Encoding": "gzip",
"Age": "3",
"Host": "httpbin.org",
"Name": "zhaofan",
"User-Agent": "Go-http-client/1.1"
},
"origin": "211.138.20.170, 211.138.20.170",
"url": "https://httpbin.org/get"
}
golang 发起POST请求
基本的POST使用
package main
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
)
func main() {
urlValues := url.Values{}
urlValues.Add("name","zhaofan")
urlValues.Add("age","22")
resp, _ := http.PostForm("http://httpbin.org/post",urlValues)
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
另外一种方式
package main
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strings"
)
func main() {
urlValues := url.Values{
"name":{"zhaofan"},
"age":{"23"},
}
reqBody:= urlValues.Encode()
resp, _ := http.Post("http://httpbin.org/post", "text/html",strings.NewReader(reqBody))
body,_:= ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
发送JSON数据的post请求
package main
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
)
func main() {
client := &http.Client{}
data := make(map[string]interface{})
data["name"] = "zhaofan"
data["age"] = "23"
bytesData, _ := json.Marshal(data)
req, _ := http.NewRequest("POST","http://httpbin.org/post",bytes.NewReader(bytesData))
resp, _ := client.Do(req)
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
不用client的post请求
package main
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
)
func main() {
data := make(map[string]interface{})
data["name"] = "zhaofan"
data["age"] = "23"
bytesData, _ := json.Marshal(data)
resp, _ := http.Post("http://httpbin.org/post","application/json", bytes.NewReader(bytesData))
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
