【Go】简易到简陋的web服务器

在上篇的读数据库代码上直接修改的。之后应该不会有下文了，感觉成功加入黑历史……还是找个框架，读读代码，快点上手吧。自己摸索有点迷迷糊糊……

Go写静态网页服务器，为浏览器返回网页。网页里的脚本向服务器上的动态接口请求了数据，拿到数据后灌进网页。总结：静态网页+动态内容的简陋服务器……

【Go】本来想把数据库的内容和网页做个交互，但是时间原因，先放过……

package main

import (
    //"path/filepath"
    "bufio"
    "io"
    "os"
    "fmt"
    "log"
    "net/http"
    "strconv"
    "database/sql"
    _ "github.com/go-sql-driver/mysql"
)

func AddHandler(w http.ResponseWriter, r *http.Request) {
    //dir, _ := filepath.Abs(filepath.Dir(os.Args[0])) // 运行路径罢辽
    //fmt.Println(dir)
    fmt.Println(r.URL.Path)
    if r.URL.Path == "/test" {
        f, err := os.Open("path/main.html") // 得填绝对路径……
        if err == nil {
            defer f.Close()
            bfRd := bufio.NewReader(f) // 读取静态网页内容并返回给浏览器
            for {
                str, err := bfRd.ReadString('\n')
                fmt.Fprintln(w, str)
                if err != nil {
                    fmt.Println("Read Err", err)
                    if err == io.EOF {
                        return
                    }
                }
            }
        }    
        fmt.Println("Open err")    
    }

    vars := r.URL.Query()
    a := vars.Get("para")
    b := vars.Get("para2")

    inta, _ := strconv.Atoi(a)
    intb, _ := strconv.Atoi(b)

    fmt.Println(r.Method, r.URL, r.Host, vars)
    fmt.Println(r.Proto)
    fmt.Fprintln(w, inta+intb) //  vars["para"][0]+vars["para2"][0])
}

type Good struct {
    Name string
    Count string
    Price string
}

func CheckErr(err error, paras ...string) {
    if err != nil {
        for _, val := range paras {
            log.Println(val)
        }
        log.Fatal(err)
    }
}

func main() {
    db, _ := sql.Open("mysql", "root:pwd@(127.0.0.1:3306)/mysql")
    defer db.Close()
    err := db.Ping()
    CheckErr(err, "SQLErr")

    log.Println("Success")
    query := "select * from goods"
    rows, _ := db.Query(query)

    var id, name, count, price string
    var nameCount map[string] int
    nameCount = make(map[string]int)
    for rows.Next() {
        rows.Scan(&id, &name, &count, &price)
        _count, err := strconv.Atoi(count)
        CheckErr(err, id, name, count, price)
        _, ok := nameCount[name]
        if (ok) {
            nameCount[name] += _count
        } else {
            nameCount[name] = _count
        }
    }

    for k, v := range nameCount {
        fmt.Println(k, v)
    }

    http.HandleFunc("/", AddHandler)
    log.Println("Listen : 15233")
    err = http.ListenAndServe("0.0.0.0:15233", nil)
    CheckErr(err, "ListenErr")
    fmt.Println("Start open")    
}

View Code

【HTML】html是拿以前的部件改的……有点丑。

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Show plus</title>

    <link rel="stylesheet" href="http://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
    <style>
        .plus .calcu {
            padding: 40px;
            background-color: #FF0000;
            text-align: center;
            font: 10px;
        }
    </style>
    <script src="http://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
    <script src="http://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <script>
        $(document).ready(function() {
            [
                [11, 15, ".plus .plus-fifteen"],
                [12, 30, ".plus .plus-thirty"],
                [13, 90, ".plus .plus-ninety"]
            ].forEach(function(v) {
                $.get("/get?para=" + v[0] + "&para2=" + v[1], function(data) {
                    if (data.length == 0) {
                        $(v[2]).text("blank");
                    } else {
                        $(v[2]).text(data);
                    }
                });
            });

        })
    </script>
</head>

<body>
    <div class="row plus">
        <div class="col-md-9">
            <div id="recommendation-carousel" class="carousel slide" data-ride="carousel">
                <ol class="carousel-indicators">
                    <li data-target="#recommendation-carousel" data-slide-to="0" class="active"></li>
                    <li data-target="#recommendation-carousel" data-slide-to="1"></li>
                    <li data-target="#recommendation-carousel" data-slide-to="2"></li>
                </ol>

                <div class="carousel-inner">
                    <div class="item active">
                        <div class="calcu">
                            11+15=
                            <div class="plus-fifteen">
                            </div>
                        </div>
                    </div>
                    <div class="item">
                        <div class="calcu">
                            12+30=
                            <div class="plus-thirty">
                            </div>
                        </div>
                    </div>
                    <div class="item">
                        <div class="calcu">
                            13+90=
                            <div class="plus-ninety">
                            </div>
                        </div>
                    </div>

                    <a class="left carousel-control" href="#recommendation-carousel" role="button" data-slide="prev">
                        <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
                    </a>
                    <a class="right carousel-control" href="#recommendation-carousel" role="button" data-slide="next">
                        <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
                    </a>


                </div>
            </div>
        </div>
</body>

</html>

View Code

Anyway，做个记录。接下来打算跟着走：

https://github.com/geektutu/7days-golang

https://geektutu.com/post/gee.html

【Go】简易到简陋的web服务器

猜你喜欢