Using the Gin framework to build a simple login background (Go language)

1. Folder structure

https
--main.go
--data
-----data.go
--gin_router
-----router.go
--gin_api
-----func.go
--func_judge
-----isExist.go

2. Relevant document code

main.go:

package main import ( Main "https/gin_router" ) func main() { Main.InitRouter() }

data.go:

package data //Structure used to store user information, Id,Name,Passwd type User struct { Id int Name string Passwd string } //Slices for storing users var Slice []User //Map for temporary storage of user login information var State = make(map[string]interface{})

route.go

package gin_router import ( api "https/gin_api" "github.com/gin-gonic/gin" ) func InitRouter() { gin.SetMode(gin.ReleaseMode) //Create a routing handler using the Default method of gin router := gin.Default() //Set default route return when visiting a wrong website router.NoRoute(api.NotFound) //Use the Group function provided by the following gin to Group different API s v1 := router.Group("admin") { v1.GET("/register", api.Register) v1.GET("/login", api.Login) } //Listening server port router.Run(":8080") }

func.go:

package gin_regAndlog import ( . "https/data" Func "https/func_judge" "net/http" "github.com/gin-gonic/gin" ) //register func Register(c *gin.Context) { //Get user name and password name := c.Request.FormValue("Name") passwd := c.Request.FormValue("Passwd") //Judge whether the user exists //Output state 1 present //No create user exists, save password and user name Bool := Func.IsExist(name) if Bool { //Registration status State["state"] = 1 State["text"] = "This user already exists!" } else { //Add user if user does not exist AddStruct(name, passwd) State["state"] = 1 State["text"] = "Registration succeeded!" } //Return the status code and registration status to the client c.String(http.StatusOK, "%v", State) } //Sign in func Login(c *gin.Context) { name := c.Request.FormValue("Name") passwd := c.Request.FormValue("Passwd") //Judge whether the user exists first, and then judge whether the password is correct Bool := Func.IsExist(name) if Bool { Bool_Pwd := Func.IsRight(name, passwd) if Bool_Pwd { State["state"] = 1 State["text"] = "Login succeeded!" } else { State["state"] = 0 State["text"] = "Wrong password!" } } else { State["state"] = 2 State["text"] = "Login failed! This user is not registered!" } c.String(http.StatusOK, "%v", State) } //Set default route return when visiting a wrong website func NotFound(c *gin.Context) { c.JSON(http.StatusNotFound, gin.H{ "status": 404, "error": "404 ,page not exists!", }) } //Add user func AddStruct(name string, passwd string) { var user User user.Name = name user.Passwd = passwd user.Id = len(Slice) + 1 Slice = append(Slice, user) }

isExist.go:

package func_judge import ( . "https/data" ) //Judge whether there is a user func IsExist(user string) bool { //If the length is 0, there is no user registration if len(Slice) == 0 { return false } else { //Traversing slice for _, v := range Slice { // return v.Name == user / / at this time, it can only be compared with the first one, so it is all false after the first one if v.Name == user { return true } } } return false } //Determine whether the password is correct func IsRight(user string, passwd string) bool { for _, v := range Slice { if v.Name == user { //Confirm that the names are the same first, and return true if the passwords are the same return v.Passwd == passwd } } return false }

Registration:

Sign in:

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