Golang框架Gin入门实战--(8)Gin中间件详解 路由中间件 全局中间件 路由分组中间件

package main

import (
	"GINDEMO/routers"
	"fmt"

	"html/template"
	"time"

	"github.com/gin-gonic/gin"
)

func UnixToTime(timestamp int) string {
	fmt.Println(timestamp)
	t := time.Unix(int64(timestamp), 0)

	return t.Format("2006-01-02 15:04:05")
}

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": UnixToTime,
	})
	//加载模板
	r.LoadHTMLGlob("templates/**/*")
	//配置静态web目录
	r.Static("/xxx", "./static")

	routers.AdminRoutersInit(r)

	routers.ApiRoutersInit(r)

	routers.DefaultRoutersInit(r)

	// }

	r.Run()
}

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
	cCp := c.Copy()

	go func() {
		time.Sleep(2 * time.Second)
		fmt.Println("Done! in path" + cCp.Request.URL.Path)
	}()
}

package routers

import (
	"GINDEMO/controllers/admin"
	"GINDEMO/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.GET("/user/edit", admin.UserController{}.Edit)

		adminRouters.GET("/article", admin.ArticleController{}.Index)
		adminRouters.GET("/article/add", admin.ArticleController{}.Add)
		adminRouters.GET("/article/edit", admin.ArticleController{}.Edit)
	}
}

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)

	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")
	}

}