fetch('https://api.example.com/data')
  .then(response => {
    console.log('HTTP状态码:', response.status);
    return response.json();
  })
  .then(data => {
    console.log('响应数据:', data);
  })
  .catch(error => {
    console.error('请求错误:', error);
  });

npm install axios

import axios from 'axios';

axios.get('https://api.example.com/data')
  .then(response => {
    console.log('HTTP状态码:', response.status);
    console.log('响应数据:', response.data);
  })
  .catch(error => {
    if (error.response) {
      // 服务器返回了响应但状态码不在 2xx 范围内
      console.log('HTTP状态码:', error.response.status);
      console.log('错误数据:', error.response.data);
    } else {
      console.error('请求错误:', error.message);
    }
  });

axios.get('https://api.example.com/data')
  .catch(error => {
    if (error.code === 'ECONNABORTED') {
      console.log('请求超时');
    } else if (error.code === 'ENETUNREACH') {
      console.log('网络不可达');
    }
  });

import { Platform } from 'react-native';

const httpsAgent = new https.Agent({
  rejectUnauthorized: Platform.OS === 'android' ? false : true
});

axios.get('https://api.example.com/data', { httpsAgent });

axios.interceptors.response.use(
  response => response,
  error => {
    if (error.response.status === 401) {
      // 处理未授权情况
      redirectToLogin();
    }
    return Promise.reject(error);
  }
);

const handleResponse = (response) => {
  switch(response.status) {
    case 200:
      return response.data;
    case 204:
      return null;
    case 400:
      throw new Error('请求参数错误');
    case 500:
      throw new Error('服务器错误');
    default:
      throw new Error(`未知错误: ${response.status}`);
  }
};

fetch('https://api.example.com/data')
  .then(handleResponse)
  .catch(handleError);

type HttpStatus = 200 | 400 | 401 | 403 | 404 | 500;

interface ApiResponse<T> {
  status: HttpStatus;
  data: T;
  message?: string;
}