Go语言web之session使用

Higker · · 802 次点击 · · 开始浏览

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第一次，站长亲自招 Gopher 了>>>

由于golang官方没有提供session标准库，我们在开发过程中会遇到session处理的问题，今天笔者推荐我写的一个库给大家使用~谢谢。

支持session 增删改查操作
支持单机内存存储
支持分布式存储
分布式Redis存储

Use Example

go get package 使用下面命令安装这个库

go get -u github.com/higker/go-session

Example Code 使用例子

package main

import (
    "fmt"
    "github.com/higker/go-session"
    "log"
    "net/http"
)

func init() {
    cfg := session.Config{
        CookieName:     session.DefaultCookieName,
        Path:           "/",
        MaxAge:         session.DefaultMaxAge,
        HttpOnly:       true,
        Secure:         false,
        RedisAddr:      "128.199.155.162:6379",
        RedisPassword:  "your password",
        RedisDB:        0,
        RedisKeyPrefix: session.RedisPrefix,
    }
    err := session.Builder(session.Redis, &cfg)
    if err != nil {
        log.Fatal(err)
    }
    // Memory store 使用内存存储方式就使用下面这个 注释上面的 打开下面的
    // It is not recommended that you use it because it consumes memory
    //err := session.Builder(session.Memory, session.DefaultCfg())
    //if err != nil {
    //  log.Fatal(err)
    //}
}

type User struct {
    Name string `json:"name"`
    Age  int8   `json:"age"`
}

func main() {
    http.HandleFunc("/", index)
    http.HandleFunc("/set", set)
    http.HandleFunc("/get", get)
    http.HandleFunc("/del", del)
    http.HandleFunc("/clean", clean)
    http.ListenAndServe(":8080", nil)
}

func set(writer http.ResponseWriter, request *http.Request) {
    ctx, err := session.Ctx(writer, request)
    if err != nil {
        log.Println(err)
    }
    // set data for session
    user := User{Name: "Ding", Age: 21}
    ctx.Set("K1", user)
    fmt.Fprintln(writer, "set value ok")
}

func get(writer http.ResponseWriter, request *http.Request) {
    ctx, err := session.Ctx(writer, request)
    if err != nil {
        log.Println(err)
    }
    bytes, err := ctx.Get("K1")
    if err != nil {
        log.Println("ERR", err)
    }
    u := new(User)
    //Deserialize data into objects
    session.DeSerialize(bytes, &u)
    fmt.Fprintln(writer, u)
}

func clean(writer http.ResponseWriter, request *http.Request) {
    ctx, err := session.Ctx(writer, request)
    if err != nil {
        log.Println(err)
    }

    // clean session all data by session
    ctx.Clean(writer)

    fmt.Fprintln(writer, "clean data ok")
}

func del(writer http.ResponseWriter, request *http.Request) {
    ctx, err := session.Ctx(writer, request)
    if err != nil {
        log.Println(err)
    }
    err = ctx.Del("K1")
    if err != nil {
        log.Println(err)
    }
    fmt.Fprintln(writer, "delete v1 successful")
}

func index(writer http.ResponseWriter, request *http.Request) {
    writer.Header().Add("Content-Type", "text/html")
    fmt.Fprintf(writer, `
        Go session storage example:<br><br>
        <a href="/set">Store key in session</a><br>
        <a href="/get">Get key value from session</a><br>
        <a href="/del">Destroy session</a>
        <a href="/clean">Clean session</a>
        <a href="https://github.com/higker/go-session">to github</a><br>`)
}