重定向后进行本机提取并检索页面代码

Question

我需要在重定向后检索数据（html页面代码）。

也就是说，通过Post将数据发送到特定的url，然后如果数据正确，页面将被重定向，当重定向完成后，我应该恢复页面的源代码并打印它。

但是我在错误的地方没有成功吗？

代码：

import * as React from 'react';
import { Text, View, StyleSheet, Button } from 'react-native';
import { Constants } from 'expo';

import { TextInput } from 'react-native-paper';
import Base64 from './Base64';
import cio from 'cheerio-without-node-native';

export default class App extends React.Component {
  constructor() {
    super();
    this.state = {
      ident: '',
      pwd: '',
    };
  }

  login() {
    let { ident, pwd } = this.state;
    const data = {
      iliad: {},
    };
    let details = {
      'login-ident': ident,
      'login-pwd': pwd,
    };

    let formBody = [];
    for (let property in details) {
      let encodedKey = encodeURIComponent(property);
      let encodedValue = encodeURIComponent(details[property]);
      formBody.push(encodedKey + '=' + encodedValue);
    }
    formBody = formBody.join('&');

    fetch('https://www.iliad.it/account/', {
      method: 'POST',
      redirect: 'manual',
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
      },
      body: formBody,
    })
      .then(response => response.text())
      .then(body => {
        const $ = cio.load(body);
        const results = body;
        console.log(results);
      })
      .catch(error => {
        console.error(error);
      });
  }

  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.title}>Iliad</Text>
        <View
          style={{
            backgroundColor: '#13a8f4',
            borderRadius: 5,
            padding: 5,
            marginBottom: 5,
          }}>
          <TextInput
            style={styles.textinput}
            onChangeText={ident => this.setState({ ident })}
            value={this.state.ident}
            label="IdUser"
            keyboardType="numeric"
            theme={{ colors: { primary: '#03a9f4' } }}
          />
          <TextInput
            style={styles.textinput}
            onChangeText={pwd => this.setState({ pwd })}
            value={this.state.pwd}
            label="Pwd"
            theme={{ colors: { primary: '#03a9f4' } }}
          />
        </View>

        <Button onPress={() => this.login()} title="Login" color="#03a9f4" />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    paddingTop: Constants.statusBarHeight,
    backgroundColor: '#fff',
    padding: 8,
  },
  title: {
    margin: 24,
    fontSize: 48,
    fontWeight: 'bold',
    textAlign: 'center',
    color: '#c00',
  },
  textinput: {
    /*height: 40,
    borderColor: '#000',
    borderWidth: 1,
    padding: 5,
    borderRadius: 5,
    marginBottom: 5,*/
    selectionColor: '#000',
    //marginBottom: 50,
    backgroundColor: '#fff',
  },
});