angular - 缺少必需的参数 : grant_type while accessing google token in ionic2

Question

缺少必需的参数:在 ionic2 中访问谷歌 token 时的 grant_type

错误:-

{
  "error" : "invalid_request",
  "error_description" : "Required parameter is missing: grant_type"
}

代码

    let creds=JSON.stringify({
        'client_id':'251059024984-8113pdtb11gm8m4evdq59stlpvcab8cn.apps.googleusercontent.com',
        'client_secret':'uVWZt_Vd5mMLXGQDo7lmAIUe',
        'redirect_uri':'http://localhost/callback',
        'grant_type':'authorization_code',
        'code':data
    });
    var headers = new Headers();
    headers.append('Content-Type', 'application/x-www-form-urlencoded');
    console.log(data)


    this.http.post('https://accounts.google.com/o/oauth2/token',creds,{headers: headers}).map(res => res.json()).subscribe(data => {
        console.log(data)
    },(error)=>{
        console.log('error in', error);
    })

当我检查 Postman 中的 api 时，它工作完美

Answer 1

let creds = 'client_id=251059024984-8113pdtb11gm8m4evdq59stlpvcab8cn.apps.googleusercontent.com'
    +'&client_secret=uVWZt_Vd5mMLXGQDo7lmAIUe'
    +'&redirect_uri=http://localhost/callback'
    +'&grant_type=authorization_code'
    +'&code=' + data

JSON.stringify() 格式不正确