Golang之http编程
Go原生支持http。import("net/http")
Go的http服务性能和nginx比较接近
几行代码就可以实现一个web服务服务端http
package main
import (
"fmt"
"net/http"
)
func Hello(w http.ResponseWriter, r *http.Request) {
fmt.Println("handle hello")
fmt.Fprintf(w, "hello")
}
func Login(w http.ResponseWriter, r *http.Request) {
fmt.Println("handle login")
fmt.Fprintf(w, "login....")
}
func main() {
http.HandleFunc("/", Hello)
http.HandleFunc("/user/login", Login)
err := http.ListenAndServe("127.0.0.1:8800", nil)
if err != nil {
fmt.Println("htpp listen failed")
}
}http客户端
package main
import (
"fmt"
"io/ioutil"
"net/http"
)
func main() {
res, err := http.Get("https://www.baidu.com/")
if err != nil {
fmt.Println("get err:", err)
return
}
data, err := ioutil.ReadAll(res.Body)
if err != nil {
fmt.Println("get data err:", err)
return
}
fmt.Println(string(data))
}http_head
package main
import (
"fmt"
"net/http"
)
var url = []string{
"http://www.baidu.com",
"http://google.com",
"http://taobao.com",
}
func main() {
for _, v := range url {
res, err := http.Head(v)
if err != nil {
fmt.Printf("head %s failed,err:%v\n", v, err)
continue
}
fmt.Printf("head succ,status:%v\n", res.Status)
}
}http_head自定义超时写法
package main
import (
"fmt"
"net"
"net/http"
"time"
)
var url = []string{
"http://www.baidu.com",
"http://google.com",
"http://taobao.com",
}
func main() {
for _, v := range url {
//超时写法
c := http.Client{
Transport: &http.Transport{
Dial: func(network, addr string) (net.Conn, error) {
timeout := time.Second * 2
return net.DialTimeout(network, addr, timeout)
},
},
}
resp, err := c.Head(v)
if err != nil {
fmt.Printf("head %s failed,err:%v\n", v, err)
continue
}
fmt.Printf("head succ,status:%v\n", resp.Status)
}
}http_form写法
http_template，模板写法
package main
import (
"fmt"
"os"
"text/template"
)
type Person struct {
Name string
age string
Title string
}
func main() {
t, err := template.ParseFiles("d:/project/src/go_dev/day10/http_form/index.html")
if err != nil {
fmt.Println("parse file err:", err)
return
}
p := Person{Name: "Mary", age: "31", Title: "我的个人网站"}
if err := t.Execute(os.Stdout, p); err != nil {
fmt.Println("There was an error:", err.Error())
}
}index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>{{.Title}}</title>
</head>
<body>
<p>hello,{{.Name}}</p>
<p>{{.}}</p>
</body>
</html>用例2：
package main
import (
"fmt"
"html/template"
"io"
"net/http"
)
var myTemplate *template.Template
type Result struct {
output string
}
func (p *Result) Write(b []byte) (n int, err error) {
fmt.Println("called by template")
p.output += string(b)
return len(b), nil
}
type Person struct {
Name string
Title string
Age int
}
func userInfo(w http.ResponseWriter, r *http.Request) {
fmt.Println("handle hello")
//fmt.Fprintf(w,"hello")
var arr []Person
p := Person{Name: "Mary001", Age: 10, Title: "我的网站"}
p1 := Person{Name: "Mary002", Age: 10, Title: "我的个人网站"}
p2 := Person{Name: "Mary003", Age: 10, Title: "我的网站2"}
arr = append(arr, p)
arr = append(arr, p1)
arr = append(arr, p2)
resultWriter := &Result{}
io.WriteString(resultWriter, "hello world")
err := myTemplate.Execute(w, arr)
if err != nil {
fmt.Println(err)
}
fmt.Println("template render data:", resultWriter.output)
//myTemplate.Execute(w, p)
//myTemplate.Execute(os.Stdout, p)
//file, err := os.OpenFile("C:/test.log", os.O_CREATE|os.O_WRONLY, 0755)
//if err != nil {
// fmt.Println("open failed err:", err)
// return
//}
}
func initTemplate(filename string) (err error) {
myTemplate, err = template.ParseFiles(filename)
if err != nil {
fmt.Println("parse file err:", err)
return
}
return
}
func main() {
initTemplate("d:/project/src/go_dev/day10/template_http/index.html")
http.HandleFunc("/user/info", userInfo)
err := http.ListenAndServe("127.0.0.1:8880", nil)
if err != nil {
fmt.Println("http listen failed")
}
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
</head>
<body>
<p>hello world</p>
<table border="1">
{{range .}}
<tr>
<td>{{.Name}}</td> <td>{{.Age}}</td><td>{{.Title}}</td>
</tr>
{{end}}
</table>
</body>
</html>本文参与 腾讯云自媒体分享计划，分享自作者个人站点/博客。
原始发表：2018-01-24 ，如有侵权请联系 cloudcommunity@tencent.com 删除
评论
登录后参与评论
推荐阅读
目录