jwt認證就是使用者註冊之後, 伺服器生成一個 JWT token返回給瀏覽器, 瀏覽器向伺服器請求資料時將 JWT token 發給伺服器, 伺服器用 signature 中定義的方式解碼 。

安裝：go get github.com/dgrijalva/jwt-go

           go get github.com/dgrijalva/jwt-go/request

main.go

packagemain

import(

"data"

"fmt"

"net/http"

"github.com/dgrijalva/jwt-go"

"github.com/dgrijalva/jwt-go/request"

"gopkg.in/gin-gonic/gin.v1"
 

)

funcmain(){

router:=gin.Default()

router.POST("/customer/register",data.Register)

router.POST("/login",data.Login)

//新增群組中介軟體

authorized:=router.Group("/user",MyMiddelware())

authorized.POST("/info",func(c*gin.Context){

c.String(http.StatusOK,"info")

})

router.Run(":8080")

}

funcMyMiddelware()gin.HandlerFunc{

returnfunc
 
(c*gin.Context){

token,err:=request.ParseFromRequest(c.Request,request.AuthorizationHeaderExtractor,

func(token*jwt.Token)(interface{},error){

return[]byte("mobile"),nil

})

iferr==nil{

iftoken.Valid{

c.Next()

}else{

c.String(http.StatusUnauthorized,"Tokenisnotvalid")

}

}else{

c.String(http.StatusUnauthorized,"Unauthorized
 
accesstothisresource")

}

}

}

data.go

packagedata

import(

"encoding/json"

"fmt"

"net/http"

"gopkg.in/gin-gonic/gin.v1"

_"github.com/go-sql-driver/mysql"

"github.com/go-xorm/xorm"

)

varDb*xorm.Engine

funcinit(){

varerrerror

//開啟資料庫

//DSN資料來源字串：使用者名稱:密碼@協議(地址:埠)/資料庫?引數=引數值

Db,err=xorm.NewEngine("mysql","yuanye:[email protected](127.0.0.1:3306)/wemai?charset=utf8")

iferr!=nil{

fmt.Println(err)

}

Db.ShowSQL(true)

err=Db.Sync2(new(Customer),new(Goods),new(CustomerInfo))

}

funcJsonResponse(codeint,datainterface{})string{

response:=make(map[string]interface{})

response["code"]=code

response["data"]=data

js,err:=json.Marshal(response)

iferr!=nil{

returnerr.Error()

}

returnstring(js)

}

funcRegister(c*gin.Context){

username:=c.PostForm("username")

password:=c.PostForm("password")

user:=Customer{

Username:username,

Password:password,

}

c.String(http.StatusOK,user.Register())

}

funcLogin(c*gin.Context){

username:=c.PostForm("username")

password:=c.PostForm("password")

user:=Customer{

Username:username,

Password:password,

}

c.String(http.StatusOK,user.Login())

}

Customer.go

packagedata

import(

"time"

"github.com/dgrijalva/jwt-go"

)

typeCustomerstruct{

Idint`xorm:"pkautoincr"`

Usernamestring`xorm:"indexuniquenotnull"`

Passwordstring`xorm:"notnull"`

CreatedAttime.Time`xorm:"created"`

}

func(c*Customer)Register()string{

Db.Insert(c)

has,_:=Db.Get(c)

ifhas{

returnJsonResponse(0,"註冊成功")

}else{

returnJsonResponse(1,"註冊失敗")

}

}

func(c*Customer)Login()string{

has,_:=Db.Get(c)

ifhas{

returnJsonResponse(0,setToken())

}else{

returnJsonResponse(1,"登入失敗")

}

}

funcsetToken()string{

token:=jwt.New(jwt.SigningMethodHS256)

claims:=make(jwt.MapClaims)

claims["exp"]=time.Now().Add(time.Hour*time.Duration(1)).Unix()

claims["iat"]=time.Now().Unix()

token.Claims=claims

tokenString,err:=token.SignedString([]byte("mobile"))

iferr!=nil{

return""

}

returntokenString

}

程式碼結構

執行效果：

登入失敗時的效果：

登入成功，返回token

帶token請求user/info介面

當不帶token時，返回錯誤資訊