How to use

setEncoding

function

in

Response

req.on('response', function(res) {

      res.setEncoding('utf8');

      var responseData = '';
      var status = res.statusCode;
      var headers = res.headers;

      res.on('data', function(chunk) {
        responseData += chunk;
      });

      res.on('end', function() {

        res.destroy();

        if (headers['content-type'] && headers['content-type'].indexOf('application/json') !== -1) {

          try {
            responseData = JSON.parse(responseData);
          } catch (error) {
            return done(error);
          }
        }

        done(null, responseData, status, headers);
      });
    });

// post数据到服务器
 postData(pinCode) {
  let headers = {
   "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0",
   'Accept-Language': 'zh-cn',
   'Content-Type': 'application/x-www-form-urlencoded',
   'Connection': 'Keep-Alive'
  };
  let encodeBody = encodePostData.encodePostData(this.userName, this.userPwd, this.preLoginData.servertime, this.preLoginData.nonce, this.preLoginData.pubkey, this.preLoginData.rsakv, this.pinCode, this.preLoginData['pcid']);
  let options = {
   method: 'POST',
   url: this.loginUrl,
   headers: headers,
   body: encodeBody,
   gzip: true
  };
  return new Promise((resolve, reject) => {
   request(options, (error, response, body) => {
    if (!error && response.statusCode == 200) {
     response.setEncoding('utf-8');
     resolve(response.body);
    } else {
     reject(response.body);
    }
   });
  });
 }

req.on('response', function (res) {
 var body = ''
 res.setEncoding('utf8')
 res.on('data', function (data) {
  body += data

req.on('response', function (res) {
 var body = ''
 res.setEncoding('utf8')
 res.on('data', function (data) {
  body += data

.setEncoding('utf8')
.pipe(response)
.on('error', (er) => {

// post数据到服务器
 postData(pinCode) {
  let headers = {
   "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0",
   'Accept-Language': 'zh-cn',
   'Content-Type':'application/x-www-form-urlencoded',
   'Connection': 'Keep-Alive'
  };
  let encodeBody = encodePostData.encodePostData(this.userName, this.userPwd, this.preLoginData.servertime,
  this.preLoginData.nonce, this.preLoginData.pubkey, this.preLoginData.rsakv, this.pinCode, this.preLoginData['pcid']);
  let options = {
   method: 'POST',
   url: this.loginUrl,
   headers: headers,
   body: encodeBody,
   gzip: true
  };
  return new Promise((resolve, reject) => {
   request(options, (error, response, body) => {
    if (!error && response.statusCode == 200) {
     response.setEncoding('utf-8');
     resolve(response.body);
    }else{
     reject(response.body)
    }
   })
  })
 }