如何在登录到其他屏幕后从jwt传递数据

// 假设这是你的登录请求
fetch('https://your-api-endpoint.com/login', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({ username, password }),
})
.then(response => response.json())
.then(data => {
  if (data.token) {
    // 存储JWT到本地存储或AsyncStorage
    AsyncStorage.setItem('userToken', data.token);
  }
})
.catch(error => console.error(error));

import React, { useEffect, useState } from 'react';
import { View, Text } from 'react-native';
import AsyncStorage from '@react-native-async-storage/async-storage';

const OtherScreen = () => {
  const [userData, setUserData] = useState(null);

  useEffect(() => {
    const getUserData = async () => {
      try {
        const token = await AsyncStorage.getItem('userToken');
        if (token) {
          // 发送请求获取用户数据
          const response = await fetch('https://your-api-endpoint.com/user-data', {
            headers: {
              'Authorization': `Bearer ${token}`,
            },
          });
          const data = await response.json();
          setUserData(data);
        }
      } catch (error) {
        console.error(error);
      }
    };

    getUserData();
  }, []);

  return (
    <View>
      {userData ? (
        <Text>{`User Name: ${userData.name}`}</Text>
      ) : (
        <Text>Loading...</Text>
      )}
    </View>
  );
};

export default OtherScreen;

// 检查JWT是否过期
const isTokenExpired = (token) => {
  const base64Url = token.split('.')[1];
  const base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
  const jsonPayload = decodeURIComponent(atob(base64).split('').map(function(c) {
    return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
  }).join(''));

  return JSON.parse(jsonPayload).exp * 1000 < Date.now();
};

// 刷新令牌逻辑
const refreshToken = async () => {
  try {
    const response = await fetch('https://your-api-endpoint.com/refresh-token', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ refreshToken: AsyncStorage.getItem('refreshToken') }),
    });
    const data = await response.json();
    if (data.token) {
      AsyncStorage.setItem('userToken', data.token);
    }
  } catch (error) {
    console.error(error);
  }
};