Question

如何使用this.jwtHelper.decodeToken（sessionStorage.getItem（＆＃39; encodedToken＆＃39;））解析作为解码的jwt令牌的下面的对象，并且需要从角色获取应用程序（QWE）的特权

name:"ram8"
roles:"{"userid":"991635","privileges":{"QWE":["QQT","RR","RRR","FCC","WWW","WRD","DML","UDE","SDE"]}}"
sub:"123456"
user.tenant.name:"DefaultDomain"
__proto__:Object

现在，使用以下代码获取角色

public getUserRoles(){
    let userInfoJSON = JSON.parse(JSON.stringify(this.jwtHelper.decodeToken(sessionStorage.getItem('encodedToken'))));
    for (let prop in userInfoJSON) {
        if(prop === 'roles'){
            let roles = JSON.parse(userInfoJSON[prop]);
            for(let rProp in roles){
                if(rProp === 'privileges'){
                    let privileges = JSON.parse(JSON.stringify(roles[rProp]));
                    for(let prev in privileges){
                        console.log("prev "+prev+" "+privileges[prev])
                        this.userRoles = privileges[prev];
                    }
                }   
            }
            break;
        }
    }
    console.log("AuthServiceuserRoles "+this.userRoles);
}

Answer 1

JSON.parse解析整个令牌，也解析嵌套对象。

您不需要for循环，只需使用let roles = userInfoJSON.roles和let privileges = roles.privileges等

这是我用来查看用户是否具有特定角色的一些示例代码：

let token = localStorage.getItem(jwtTokenName);
    if (token && tokenNotExpired(null, token)) {
        let tokenDecoded = jwtHelper.decodeToken(token);
        if (tokenDecoded.roles && tokenDecoded.roles.length > 0) {
            for (let i = 0; i < tokenDecoded.roles.length; i++) {
                const role = tokenDecoded.roles[i];
                if (roles.indexOf(role) >= 0) {
                    return true;
                }
            }
        }
    }

在打字稿中解析/读取解码的jwt令牌数据

1 个答案: