快速上手go Web服务器端

任务目标

熟悉 go 服务器工作原理
基于现有 web 库，编写一个简单 web 应用类似 cloudgo。
使用 curl 工具访问 web 程序
对 web 执行压力测试

welcome to drop by my gitee

https://gitee.com/woodx9/go/tree/master/webService

效果图

登录界面

服务器端代码

service.go

package main
  
import (
    "fmt"
    "html/template"
    "log"
    "net/http"
)
 
type Information struct {
    Username string
    Password string
}
  
func TestHandle(res http.ResponseWriter, req *http.Request) {
    admin := req.FormValue("admin")
    password := req.FormValue("password")
  
    fmt.Println("account: " + admin)
    fmt.Println("password: " + password + "\nregisted")
  
    if admin != "woodx" || password != "123456" {
        res.Write([]byte("Login Fail,Please Try Again!"))
    } else {
        info := new(Information)
        info.Username = admin;
        info.Password = password;
        t, err := template.ParseFiles("./static/login.html")
        if err != nil {
            http.Error(res, err.Error(), http.StatusInternalServerError)
            return
        }
        t.Execute(res, info)
        return
    }
}
  
func main() {
    port := "3000"
  
    http.HandleFunc("/", func(res http.ResponseWriter, req *http.Request) {
        t, err := template.ParseFiles("./static/index.html")
        if err != nil {
            log.Println("err")
        }
        t.Execute(res, nil)
    })
  
    http.HandleFunc("/Login", TestHandle)
  
    fmt.Println("start http server at:", port)
    http.ListenAndServe(":"+port, nil)
}

static/index.html

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>登陆页面</title>
        <link rel="stylesheet" type="text/css" href="./mycss.css" />
    <script type="text/javascript" src="./myjs.js"> </script>
    </head>
     
     <body>
        <h1>登陆页面</h1>
        <form method="post" action="/Login">
            <table>
                <tr>
                <td>用户名</td><td><input type="text" name="admin"></input></td>
                </tr>
                <tr>
                <td>密码</td><td><input type="password" name="password"></input></td>
                </tr>
                <tr>
                    <td><input type="submit" value="登陆" style="width:100px;height:25px"></input></td>
                </tr>
            </table>
        </form>
    </body>
</html>

static/login.html

<html>
<head>
    <title>Login</title>
</head>
<body>
    <table>
        <tr>
            <th>Username</th>
            <th>Password</th>
        </tr>
        <tr>
            <th>{{.Username}}</th>
            <th>{{.Password}}</th>
        </tr>
    </table>
 
</body>
</html>

curl test

woodx@woodx-VirtualBox:~/Desktop$ curl -v localhost:3000
*   Trying 127.0.0.1:3000...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 3000 (#0)
> GET / HTTP/1.1
> Host: localhost:3000
> User-Agent: curl/7.68.0
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< Date: Mon, 23 Nov 2020 15:26:41 GMT
< Content-Length: 668
< Content-Type: text/html; charset=utf-8
< 
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>登陆页面</title>
        <link rel="stylesheet" type="text/css" href="./mycss.css" />
    <script type="text/javascript" src="./myjs.js"> </script>
    </head>
     
     <body>
        <h1>登陆页面</h1>
        <form method="post" action="/Login">
            <table>
                <tr>
                <td>用户名</td><td><input type="text" name="admin"></input></td>
                </tr>
                <tr>
                <td>密码</td><td><input type="password" name="password"></input></td>
                </tr>
                <tr>
                    <td><input type="submit" value="登陆" style="width:100px;height:25px"></input></td>
                </tr>
            </table>
        </form>
    </body>
</html>
* Connection #0 to host localhost left intact

woodx@woodx-VirtualBox:~/Desktop$ curl -v localhost:3000/Login
*   Trying 127.0.0.1:3000...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 3000 (#0)
> GET /Login HTTP/1.1
> Host: localhost:3000
> User-Agent: curl/7.68.0
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< Date: Mon, 23 Nov 2020 15:29:11 GMT
< Content-Length: 28
< Content-Type: text/plain; charset=utf-8
< 
* Connection #0 to host localhost left intact
Login Fail,Please Try Again!

ab test

woodx@woodx-VirtualBox:~/Desktop$ ab -n 1000 -c 10 http://localhost:3000/
This is ApacheBench, Version 2.3 <$Revision: 1843412 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
 
Benchmarking localhost (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests
 
 
Server Software:        
Server Hostname:        localhost
Server Port:            3000
 
Document Path:          /
Document Length:        668 bytes
 
Concurrency Level:      10
Time taken for tests:   0.320 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      785000 bytes
HTML transferred:       668000 bytes
Requests per second:    3123.64 [#/sec] (mean)
Time per request:       3.201 [ms] (mean)
Time per request:       0.320 [ms] (mean, across all concurrent requests)
Transfer rate:          2394.59 [Kbytes/sec] received
 
Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.0      0       0
Processing:     0    3   2.5      2      18
Waiting:        0    2   2.1      1      18
Total:          0    3   2.5      2      18
 
Percentage of the requests served within a certain time (ms)
  50%      2
  66%      3
  75%      4
  80%      4
  90%      6
  95%      7
  98%     10
  99%     17
 100%     18 (longest request)