gin实战（九）

package main
import (
    "gindemo12/models"
    "gindemo12/routers"
    "html/template"
    "github.com/gin-gonic/gin"
)
func main() {
    // 创建一个默认的路由引擎
    r := gin.Default()
    //自定义模板函数  注意要把这个函数放在加载模板前
    r.SetFuncMap(template.FuncMap{
        "UnixToTime": models.UnixToTime,
    })
    //加载模板 放在配置路由前面
    r.LoadHTMLGlob("templates/**/*")
    //配置静态web目录   第一个参数表示路由, 第二个参数表示映射的目录
    r.Static("/static", "./static")
    routers.AdminRoutersInit(r)
    routers.ApiRoutersInit(r)
    routers.DefaultRoutersInit(r)
    r.Run(":80")
}

package admin
import (
    "net/http"
    "github.com/gin-gonic/gin"
)
type ArticleController struct {
    BaseController
}
func (con ArticleController) Index(c *gin.Context) {
    con.success(c)
}
func (con ArticleController) Add(c *gin.Context) {
    c.String(http.StatusOK, "-add--文章-")
}
func (con ArticleController) Edit(c *gin.Context) {
    c.String(http.StatusOK, "-Edit---文章---")
}

package admin
import "github.com/gin-gonic/gin"
type BaseController struct{}
func (con BaseController) success(c *gin.Context) {
    c.String(200, "成功")
}
func (con BaseController) error(c *gin.Context) {
    c.String(200, "失败")
}

package admin
import (
    "fmt"
    "github.com/gin-gonic/gin"
)
type IndexController struct {
}
func (con IndexController) Index(c *gin.Context) {
    username, _ := c.Get("username")
    fmt.Println(username)
    //类型断言
    v, ok := username.(string)
    if ok {
        c.String(200, "用户列表--"+v)
    } else {
        c.String(200, "用户列表--获取用户失败")
    }
}

package admin
import (
    "fmt"
    "gindemo12/models"
    "net/http"
    "os"
    "path"
    "strconv"
    "github.com/gin-gonic/gin"
)
type UserController struct {
    BaseController
}
func (con UserController) Index(c *gin.Context) {
    c.String(200, "用户列表--")
    // con.success(c)
}
func (con UserController) Add(c *gin.Context) {
    c.HTML(http.StatusOK, "admin/useradd.html", gin.H{})
}
/*
    1、获取上传的文件
    2、获取后缀名 判断类型是否正确  .jpg .png .gif .jpeg
    3、创建图片保存目录  static/upload/20200623
    4、生成文件名称和文件保存的目录
    5、执行上传
*/
func (con UserController) DoUpload(c *gin.Context) {
    username := c.PostForm("username")
    // 1、获取上传的文件
    file, err := c.FormFile("face")
    if err == nil {
        // 2、获取后缀名 判断类型是否正确  .jpg .png .gif .jpeg
        extName := path.Ext(file.Filename)
        allowExtMap := map[string]bool{
            ".jpg":  true,
            ".png":  true,
            ".gif":  true,
            ".jpeg": true,
        }
        if _, ok := allowExtMap[extName]; !ok {
            c.String(200, "上传的文件类型不合法")
            return
        }
        // 3、创建图片保存目录  static/upload/20210624
        day := models.GetDay()
        dir := "./static/upload/" + day
        err := os.MkdirAll(dir, 0666)
        if err != nil {
            fmt.Println(err)
            c.String(200, "MkdirAll失败")
            return
        }
        // 4、生成文件名称和文件保存的目录   111111111111.jpeg
        fileName := strconv.FormatInt(models.GetUnix(), 10) + extName
        // 5、执行上传
        dst := path.Join(dir, fileName)
        c.SaveUploadedFile(file, dst)
    }
    c.JSON(http.StatusOK, gin.H{
        "success":  true,
        "username": username,
    })
}

package api
import "github.com/gin-gonic/gin"
type ApiController struct{}
func (con ApiController) Index(c *gin.Context) {
    c.String(200, "我是一个api接口")
}
func (con ApiController) Userlist(c *gin.Context) {
    c.String(200, "我是一个api接口-Userlist")
}
func (con ApiController) Plist(c *gin.Context) {
    c.String(200, "我是一个api接口-Plist")
}

package itying
import (
    "net/http"
    "github.com/gin-gonic/gin"
)
type DefaultController struct{}
func (con DefaultController) Index(c *gin.Context) {
    //设置cookie
    //3600表示的是秒
    c.SetCookie("username", "张三", 3600, "/", ".itying.com", false, true)
    c.HTML(http.StatusOK, "default/index.html", gin.H{
        "msg": "我是一个msg",
        "t":   1629788418,
    })
}
func (con DefaultController) News(c *gin.Context) {
    //获取cookie
    username, _ := c.Cookie("username")
    c.String(200, "username=%v", username)
}
func (con DefaultController) Shop(c *gin.Context) {
    //获取cookie
    username, _ := c.Cookie("username")
    c.String(200, "username=%v", username)
}
func (con DefaultController) DeleteCookie(c *gin.Context) {
    //删除cookie
    c.SetCookie("username", "张三", -1, "/", "localhost", false, true)
    c.String(200, "删除成功")
}

package middlewares
import (
    "fmt"
    "time"
    "github.com/gin-gonic/gin"
)
func InitMiddleware(c *gin.Context) {
    //判断用户是否登录
    fmt.Println(time.Now())
    fmt.Println(c.Request.URL)
    c.Set("username", "张三")
    //定义一个goroutine统计日志  当在中间件或 handler 中启动新的 goroutine 时，不能使用原始的上下文（c *gin.Context）， 必须使用其只读副本（c.Copy()）
    cCp := c.Copy()
    go func() {
        time.Sleep(2 * time.Second)
        fmt.Println("Done! in path " + cCp.Request.URL.Path)
    }()
}

package models
import (
    "time"
)
//时间戳转换成日期
func UnixToTime(timestamp int) string {
    t := time.Unix(int64(timestamp), 0)
    return t.Format("2006-01-02 15:04:05")
}
//日期转换成时间戳 2020-05-02 15:04:05
func DateToUnix(str string) int64 {
    template := "2006-01-02 15:04:05"
    t, err := time.ParseInLocation(template, str, time.Local)
    if err != nil {
        return 0
    }
    return t.Unix()
}
//获取时间戳
func GetUnix() int64 {
    return time.Now().Unix()
}
//获取当前的日期
func GetDate() string {
    template := "2006-01-02 15:04:05"
    return time.Now().Format(template)
}
//获取年月日
func GetDay() string {
    template := "20060102"
    return time.Now().Format(template)
}

package routers
import (
    "gindemo12/controllers/admin"
    "gindemo12/middlewares"
    "github.com/gin-gonic/gin"
)
func AdminRoutersInit(r *gin.Engine) {
    //middlewares.InitMiddleware中间件
    adminRouters := r.Group("/admin", middlewares.InitMiddleware)
    {
        adminRouters.GET("/", admin.IndexController{}.Index)
        adminRouters.GET("/user", admin.UserController{}.Index)
        adminRouters.GET("/user/add", admin.UserController{}.Add)
        adminRouters.POST("/user/doUpload", admin.UserController{}.DoUpload)
        adminRouters.GET("/article", admin.ArticleController{}.Index)
        adminRouters.GET("/article/add", admin.ArticleController{}.Add)
        adminRouters.GET("/article/edit", admin.ArticleController{}.Edit)
    }
}

package routers
import (
    "gindemo12/controllers/api"
    "github.com/gin-gonic/gin"
)
func ApiRoutersInit(r *gin.Engine) {
    apiRouters := r.Group("/api")
    {
        apiRouters.GET("/", api.ApiController{}.Index)
        apiRouters.GET("/userlist", api.ApiController{}.Userlist)
        apiRouters.GET("/plist", api.ApiController{}.Plist)
    }
}

package routers
import (
    "gindemo12/controllers/itying"
    "github.com/gin-gonic/gin"
)
func DefaultRoutersInit(r *gin.Engine) {
    defaultRouters := r.Group("/")
    {
        defaultRouters.GET("/", itying.DefaultController{}.Index)
        defaultRouters.GET("/news", itying.DefaultController{}.News)
        defaultRouters.GET("/shop", itying.DefaultController{}.Shop)
        defaultRouters.GET("/deleteCookie", itying.DefaultController{}.DeleteCookie)
    }
}

{{ define "admin/index.html" }}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h2>这是后台首页</h2>
</body>
</html>
{{ end }}

{{ define "admin/news.html" }}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h2>后台新闻页面</h2>
</body>
</html>
{{ end }}

{{ define "admin/useradd.html" }}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h2>演示文件上传</h2>
    <form action="/admin/user/doUpload" method="post" enctype="multipart/form-data">
        用户名:<input type="text" name="username" placeholder="用户名" />
        <br>
        <br>
        头 像：<input type="file" name="face" />       
        <br> <br>
        <input type="submit" value="提交">
    </form>
</body>
</html>
{{ end }}

<!-- 相当于给模板定义一个名字 define end 成对出现-->
{{ define "default/index.html" }}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="/static/css/base.css">
</head>
<body>
    <h1>我是一个首页--index</h1>
    <br>
    {{.msg}}
    <br>
    {{UnixToTime .t}}
</body>
</html>
{{ end }}

<!-- 相当于给模板定义一个名字 define end 成对出现-->
{{ define "default/user.html" }}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="static/css/base.css">
</head>
<body>
    <form action="/doAddUser2" method="post">
        用户名:<input type="text" name="username" /> <br><br>
        密码:<input type="password" name="password" /> <br><br>      
        <input type="submit" value="提交">
    </form>
</body>
</html>
{{end}}

<!-- 相当于给模板定义一个名字 define end 成对出现-->
{{ define "public/page_footer.html" }}
    <h1>
        我是一个公共的底部
    </h1>
{{end}}

<!-- 相当于给模板定义一个名字 define end 成对出现-->
{{ define "public/page_header.html" }}
    <h1>
        我是一个公共的标题---{{.title}}
    </h1>
{{end}}

源码.7z