在Golang中解码JWT令牌 [英] decoding JWT token in Golang

问题描述

我目前正在使用Golang应用程序.我从客户端收到JWT令牌，在Go中，我需要对该令牌进行解码并获取以下信息:用户，名称等.我正在检查可用的库来处理JWT令牌，而我来到了这一个，但是我不知道如何简单地做我需要的. 我有令牌，我需要将信息解码为地图或至少为json.在哪里可以找到如何做的指南? 谢谢！

I am currently working on a Golang application.I receive a JWT token from the client side and, in Go I need to decode that token and get the information: user, name, etc. I was checking the libraries that are available to handle JWT tokens and I came down to this one, but I don't see how to simply make what I need. I have the token and I need to decode the info into a map or at least a json. Where can I find a guide of how to do it? Thank you!

推荐答案

函数 jwt.ParseWithClaims 接受jwt.Claims的接口作为第二个参数.除了基于结构的自定义声明外，该软件包还提供基于map的声明，即 jwt.MapClaims . 因此，您只需将令牌解码为MapClaims，例如

Function jwt.ParseWithClaims accept an interface of jwt.Claims as the second argument. Besides struct-based custom claims, the package also provides map-based claims, i.e. jwt.MapClaims. So, you can simply decode the token into a MapClaims, e.g.

tokenString := "<YOUR TOKEN STRING>"    
claims := jwt.MapClaims{}
token, err := jwt.ParseWithClaims(tokenString, claims, func(token *jwt.Token) (interface{}, error) {
    return []byte("<YOUR VERIFICATION KEY>"), nil
})
// ... error handling

// do something with decoded claims
for key, val := range claims {
    fmt.Printf("Key: %v, value: %v\n", key, val)
}

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