如何以角度对客户端上的JWT编码令牌有效载荷进行解码? [英] How to decode the JWT encoded token payload on client-side in angular?

问题描述

作为回应，我从我的API中获得了一个JWT编码的访问令牌.但是我无法对其进行解码并以JSON格式获取它.我尝试为其使用angular2-jwt库，但是没有用.我在下面编写代码:

I am getting one JWT encoded access token from my API in response. But I am not able to decode it and get it in JSON format. I tried using the angular2-jwt library for it, but it did not worked. I am writing my code below:

 setXAuthorizationToken(client){
    let requestHeader = new Headers();
    requestHeader.append('Content-Type', 'application/x-www-form-urlencoded');
    this.http.post(client.clientURL + "oauth/token", 'grant_type=password&client_id=toto&client_secret=sec&' +  'username=' + client.username
    + '&password=' + client.password, {
      headers: requestHeader
    }).map(res=>res.json())
    .subscribe((token) =>{
      if(!token.access_token){
          return;
      }
      else{
       var decompressToken = LZString.decompressFromEncodedURIComponent(token.access_token);
       console.log(decompressToken);
}
    });
    }

有人可以帮我解决这个问题吗?

Can anybody please help me solve this issue?

推荐答案

我使用 jwt-decode 包对角度5中的JWT令牌进行解码；这个包裹对我来说很好.

I use jwt-decode package for decoding JWT token in angular 5; this package works me fine.

通过以下命令安装软件包后:

after install the package through this command:

npm install jwt-decode

通过以下语法将此包导入您的TypeScript类:

import this package into your TypeScript class through this syntax:

import * as jwt_decode from "jwt-decode";

对于较新版本(3及更高版本):

For newer version (3 and above):

import jwt_decode from 'jwt-decode';

并使用此库方法对您的访问令牌进行解码，像这样

and use this library method for decoding your access token like this

  getDecodedAccessToken(token: string): any {
    try{
        return jwt_decode(token);
    }
    catch(Error){
        return null;
    }
  }

令牌参数定义从API获取的访问令牌

token parameter define your access token which gets from your API

jwt_decode 方法将解码的令牌信息作为对象返回；您可以访问令牌中的任何信息.

jwt_decode method return decoded token info as an object; you can access any info into your token.

示例:

let tokenInfo = this.getDecodedAccessToken(token); // decode token
let expireDate = tokenInfo.exp; // get token expiration dateTime
console.log(tokenInfo); // show decoded token object in console

jwt-decode 是一个小型浏览器库，可帮助解码通过Base64Url编码的JWT令牌.

jwt-decode is a small browser library that helps to decode JWTs token which is Base64Url encoded.

重要提示::该库不会验证令牌，任何格式正确的JWT都可以解码.您应该验证自己的令牌通过使用express-jwt，koa-jwt，Owin之类的服务器端逻辑承载JWT等.

IMPORTANT: This library doesn't validate the token, any well formed JWT can be decoded. You should validate the token in your server-side logic by using something like express-jwt, koa-jwt, Owin Bearer JWT, etc.

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