Question

我正在创建一个Ionic 3应用程序，在某些方面我想做一些在Twitter REST API上获取请求。

为了避免CORS问题，我安装了Ionic Native HTTP，我认为使用本机代码来发出请求。

在crypto-js的帮助下，我做了这个：

@Injectable()
export class SocialAuthProvider {

   readonly tw_consumer_key = "KMrbopjEliojNyhWAhc5DqrEB";
  readonly tw_consumer_secret_key = "z66rlC6kTXNq2fjrP3UJc1pVDaTlKggkZHSDtl81dnqDRPwfoB";
  public token: string;
  public tokenSecret: string;
  public generatedNONCE = '';
  public time;
  public userID: string;




constructor(
    private fb: Facebook,
    private tw: TwitterConnect,
    private ns: NativeStorage,
    private HTTPnative: HTTP
  ) {


   this.generatedNONCE = this.createNonce();
    this.time = Math.floor((new Date()).getTime() / 1000);


  }

twitterApiRequest（）：承诺{

let url = 'https://api.twitter.com/1.1/users/show.json';

let headers = this.prepareTwitterHeaders();


return new Promise((resolve, reject) => {


  this.HTTPnative.get(url, {'user_id': this.userID}, headers).then((response: HTTPResponse) => {

    resolve(response);

  }).catch((err: Error) => {

    reject(err);

  })

});

}

public prepareTwitterHeaders（）{

const headerJson = {
  'Accept': '*/*',
  'Content-Type'  : 'application/x-www-form-urlencoded',
  'Authorization' :  this.prepareAuthorization(),
};



return headerJson;

}

public createNonce（）：string {

let text = "";
let possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
for(let i = 0; i < 32; i++) {
  text += possible.charAt(Math.floor(Math.random() * possible.length));
}

return text;

}

public prepareAuthorization（）{

let authorization = 'OAuth ';
authorization += this.fixedEncodeUri('oauth_consumer_key') + '="' + this.fixedEncodeUri(this.tw_consumer_key) + '", ' ;
authorization += this.fixedEncodeUri('oauth_nonce') + '="' + this.fixedEncodeUri(this.generatedNONCE) + '", ' ;
authorization += this.fixedEncodeUri('oauth_signature') + '="' + this.fixedEncodeUri(this.prepareSignature()) + '", ' ;
authorization += this.fixedEncodeUri('oauth_signature_method') + '="' + this.fixedEncodeUri('HMAC-SHA1') + '", ' ;
authorization += this.fixedEncodeUri('oauth_timestamp') + '="' + this.fixedEncodeUri(this.time) + '", ' ;
authorization += this.fixedEncodeUri('oauth_token') + '="' + this.fixedEncodeUri(this.token) + '", ' ;
authorization += this.fixedEncodeUri('oauth_version') + '="' + this.fixedEncodeUri('1.0') + '"' ;

return authorization;

}

public fixedEncodeUri（str：string）{

return encodeURIComponent(str).replace(/[!'()*]/g, function (c) {
  return '%' + c.charCodeAt(0).toString(16);
});

}

public prepareSignature（）：string {

const sigParams = {
  'oauth_consumer_key'    : this.tw_consumer_key,
  'oauth_nonce'           : this.generatedNONCE,
  'oauth_signature_method': 'HMAC-SHA1',
  'oauth_timestamp'       : this.time,
  'oauth_token'           : this.token,
  'oauth_version'         : '1.0',
  'user_id'               : this.userID
};


/** Create the string from parameters */

let paramStr = '';

let total = Object.keys(sigParams).length - 1;

Object.keys(sigParams).forEach((key, i) => {

  let name = this.fixedEncodeUri(key);
  let value = this.fixedEncodeUri(sigParams[key]);

  paramStr += name;
  paramStr += '=';
  paramStr += value;

  if ( i < total ) { paramStr += '&' }

});

console.log(paramStr);




/** Create the base signature base string */

let baseSignatureStr = '';

const method = 'GET';
const encodedTwitterUrl =  this.fixedEncodeUri('https://api.twitter.com/1.1/users/show.json');

baseSignatureStr += method + '&' + encodedTwitterUrl +  '&' + this.fixedEncodeUri(paramStr);


/** Create the Signing Key (Consumer Secret & Token Secret) */

let signingKey = this.fixedEncodeUri(this.tw_consumer_secret_key) + '&' + this.fixedEncodeUri(this.tokenSecret);



let hashedParams = CryptoJS.HmacSHA1(baseSignatureStr, signingKey).toString();


let utf8parsed = CryptoJS.enc.Utf8.parse(hashedParams);

let final = CryptoJS.enc.Base64.stringify(utf8parsed);


return final;

} }

但我一直在接受status: 401, code: 32, Could not authenticate you.

我感觉非常接近，但我开始变得疯狂。

非常感谢任何帮助。

PS。所有凭据token, tokenSecret, consumer key, consumer secret key都是正确的。

Ionic 3对Twitter API的GET请求失败

0 个答案: