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本文实例讲述了nodejs实现百度舆情接口。分享给大家供大家参考,具体如下:

const URL = require('url');
const http = require('http');
const https = require('https');
const qs = require('querystring');
let trends = exports;
trends.getInstance = function () {
  return new Trends;
}
function Trends() {
  this.expireTime = 1800;
  this.accessKey = 'xxxxxxxx';
  this.secretKey = 'xxxxxxxx';
  this.userKey = 'xxxxxxxx';
  this.userSecret = 'xxxxxxxx';
  this.host = 'trends.baidubce.com';
  this.timestamp = _.time();
  this.utcTimestamp = _.utcTime();
}
Trends.prototype.request = async function (method, uri, params) {
  method = method.toUpperCase();
  let token = this.getToken();
  let headers = this.getHeaders(method, uri);
  params = Object.assign({}, params || {}, {
    'user_key': this.userKey,
    'token': token,
    'timestamp': this.timestamp
  });
  let url = `http://${this.host}${uri}`;
  return await this.httpRequest(method, url, params, headers);
}
Trends.prototype.getHeaders = function (method, uri) {
  let authorization = this.getAuthorization(method, uri);
  return {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Host': this.host,
    'x-bce-date': this.utcTimestamp,
    'Authorization': authorization,
  };
}
Trends.prototype.getAuthorization = function (method, uri) {
  let authString = `bce-auth-v1/${this.accessKey}/${this.utcTimestamp}/${this.expireTime}`;
  let signinKey = _.hmac(authString, this.secretKey, 'sha256');
  let header = {
    'host': this.host,
    'x-bce-date': _.urlencode(this.utcTimestamp)
  };
  let headerArr = [];
  for (let name in header) {
    let val = header[name];
    headerArr.push(`${name}:${val}`);
  }
  let headerKeyStr = Object.keys(header).sort().join(';');
  let requestStr = `${method}\n${uri}\n\n${headerArr.join('\n')}`;
  let signautre = _.hmac(requestStr, signinKey, 'sha256');
  return `${authString}/${headerKeyStr}/${signautre}`;
}
Trends.prototype.getToken = function () {
  return _.hmac(this.userKey + this.timestamp, this.userSecret);
}
Trends.prototype.httpRequest = async function (method, url, params, headers) {
  let urlObj = URL.parse(url);
  let protocol = urlObj.protocol;
  let options = {
    hostname: urlObj.hostname,
    port: urlObj.port,
    path: urlObj.path,
    method: method,
    headers: headers,
    timeout: 10000,
  };
  let postData = qs.stringify(params || {});
  return new Promise((resolve, reject) => {
    let req = (protocol == 'http:' "timeout", (e) => {
      _.error('request timeout', method, url, params, e);
      resolve('');
    })
    if (method.toUpperCase() == 'POST') {
      req.write(postData);
    }
    req.end();
  });
}

module.exports = function () {
  return new Script;
}
function Script() {}
Script.prototype.run = async function () {
  let rst = this.getTaskList();
  console.log(rst);
}
Script.prototype.getTaskList = async function () {
  let params = {};
  let method = 'post';
  let uri = '/openapi/getTasklist';
  let rst = await _.trends.getInstance().request(method, uri, params);
  return rst;
}

希望本文所述对大家node.js程序设计有所帮助。

标签:
nodejs,百度舆情接口

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而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?