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go语言之jwt

关键词: golang jwt

go语言之jwt

```
package main

import (
    "fmt"
    "github.com/dgrijalva/jwt-go"
)

type JWT struct {
}

func (JWT) GetKey() []byte {
    key := "https://gitee.com/drycms/drycms"
    return []byte(key)
}

func (that JWT) GetToken(data jwt.MapClaims) (token string) {
    t := jwt.NewWithClaims(jwt.SigningMethodHS256, data)
    token, _ = t.SignedString(that.GetKey())
    return
}

func (that JWT) Parse(data string) (result jwt.MapClaims, err error) {
    token, err := jwt.Parse(data, func(token *jwt.Token) (interface{}, error) {
        if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
            return nil, fmt.Errorf("%v", token.Header["alg"])
        }
        return that.GetKey(), nil
    })
    if err != nil {
        return
    }
    if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
        result = claims
    }
    return
}

func main() {
    data := jwt.MapClaims{
        "name": "test",
        "sex":  1,
    }
    token := new(JWT).GetToken(data)
    fmt.Println(token)
    result, _ := new(JWT).Parse(token)
    fmt.Println(result)
}

/*
   用户认证后就给一个token，然后验证就好了
   优点: 无需存储
   缺点: 颁布的token无发撤销，除非服务端又存储token，或者将有效期设置短一点
*/
```

admin
2020-06-11 18:19:30
go

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go语言之jwt