Go語言-基本的http請求操作
阿新 • • 發佈：2019-08-21
Go發起GET請求
基本的GET請求
//基本的GET請求 package main import ( "fmt" "io/ioutil" "net/http" ) func main() { resp, err := http.Get("http://www.hao123.com") 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") } }
帶引數的GET請求
package main import ( "fmt" "io/ioutil" "net/http" ) func main(){ resp, err := http.Get("http://www.baidu.com?name=Paul_Chan&age=26") if err != nil { fmt.Println(err) return } defer resp.Body.Close() body, _ := ioutil.ReadAll(resp.Body) fmt.Println(string(body)) }
如果我們想要把一些引數做成變數而不是直接放到url中怎麼操作，程式碼例子如下：
package main import ( "fmt" "io/ioutil" "net/http" "net/url" ) func main(){ params := url.Values{} Url, err := url.Parse("http://www.baidu.com") if err != nil { return } params.Set("name","Paul_Chan") params.Set("age","26") //如果引數中有中文引數,這個方法會進行URLEncode Url.RawQuery = params.Encode() urlPath := Url.String() fmt.Println(urlPath) // https://www.baidu.com?age=26&name=Paul_chan resp,err := http.Get(urlPath) defer resp.Body.Close() body, _ := ioutil.ReadAll(resp.Body) fmt.Println(string(body)) }
解析JSON型別的返回結果
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://xxx.com")
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請求新增請求頭
package main
import (
"fmt"
"io/ioutil"
"net/http"
)
func main() {
client := &http.Client{}
req,_ := http.NewRequest("GET","http://xxx.com",nil)
req.Header.Add("name","Paul_Chan")
req.Header.Add("age","26")
resp,_ := client.Do(req)
body, _ := ioutil.ReadAll(resp.Body)
fmt.Printf(string(body))
}從上述的結果可以看出我們設定的頭是成功了：
{
"args": {},
"headers": {
"Accept-Encoding": "gzip",
"Age": "26",
"Host": "xxx.com",
"Name": "Paul_Chan",
"User-Agent": "Go-http-client/1.1"
},
"origin": "211.138.20.170, 211.138.20.170",
"url": "https://xxx.com"
}golang 發起POST請求
基本的POST使用
package main
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
)
func main() {
urlValues := url.Values{}
urlValues.Add("name","Paul_Chan")
urlValues.Add("age","26")
resp, _ := http.PostForm("http://xxx.com/post",urlValues)
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
//結果如下：
/******************
{
"args": {},
"data": "",
"files": {},
"form": {
"age": "26",
"name": "Paul_Chan"
},
"headers": {
"Accept-Encoding": "gzip",
"Content-Length": "19",
"Content-Type": "application/x-www-form-urlencoded",
"Host": "httpbin.org",
"User-Agent": "Go-http-client/1.1"
},
"json": null,
"origin": "211.138.20.170, 211.138.20.170",
"url": "https://httpbin.org/post"
}
******************/另外一種方式
package main
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strings"
)
func main() {
urlValues := url.Values{
"name":{"Paul_Chan"},
"age":{"26"},
}
reqBody:= urlValues.Encode()
resp, _ := http.Post("http://xxx.com/post", "text/html",strings.NewReader(reqBody))
body,_:= ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
//結果如下：
/**************
{
"args": {},
"data": "age=26&name=Paul_Chan",
"files": {},
"form": {},
"headers": {
"Accept-Encoding": "gzip",
"Content-Length": "19",
"Content-Type": "text/html",
"Host": "httpbin.org",
"User-Agent": "Go-http-client/1.1"
},
"json": null,
"origin": "211.138.20.170, 211.138.20.170",
"url": "https://httpbin.org/post"
}
***************/傳送JSON資料的post請求
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))
}
//結果如下：
/*************
{
"args": {},
"data": "{\"age\":\"23\",\"name\":\"zhaofan\"}",
"files": {},
"form": {},
"headers": {
"Accept-Encoding": "gzip",
"Content-Length": "29",
"Host": "httpbin.org",
"User-Agent": "Go-http-client/1.1"
},
"json": {
"age": "23",
"name": "zhaofan"
},
"origin": "211.138.20.170, 211.138.20.170",
"url": "https://httpbin.org/post"
}
*************/不用client的post請求
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))
}