我的 express.js 没有收到我从 React Native 发送的 body

Question

我在 React Native 中有一个 api object 设置：

import axios from "axios";
import AsyncStorage from "@react-native-async-storage/async-storage"; //npm install @react-native-async-storage/async-storage

const instance = axios.create({
  baseURL: "localhost url here",
});
/**
 * This will add a header if we have a token only,
 * we will be adding a Authorization header to our instance before running
 * the http req
 */
instance.interceptors.request.use(
  //this will be called before doing the http request,
  //it is async because to retrieve the storage it is async
  async (config) => {
    const token = await AsyncStorage.getItem("token"); //awaits until it gets token (IF THERE IS ONE)
    //if there is a token
    if (token) {
      config.headers.Authorization = `Bearer ${token}`; //add string 'Bearer withGivenTOKEN'
    }
    return config;
  },
  (err) => {
    return Promise.reject(err);
  }
);

export default instance;

在进行 api 调用时，我是这样做的：

await myApi
    .get("/routeHere", {
      latitude: currentLocation.latitude,
      longitude: currentLocation.longitude,
    })
    .then((response) => console.log(response))
    .catch((err) => console.log(err));

接收数据时，body 部分只是一个空 object。发生这种情况有原因吗？我做错了什么吗？

router.get("/routeHere", async (req, res) => {
  console.log("here is my body: ", req.body);
}

我想我缺少添加 header 类型，但不确定它是否有效，如果有效，你怎么写？我是新来的表达和反应原生

Answer 1

GET 请求不应包含数据。

The HTTP GET method requests a representation of the specified resource. Requests using GET should only be used to request data (they shouldn't include data).

GET method

但是你可以使用params来发送纬度和经度，像这样：

await myApi
    .get(`/routeHere?latitude=${currentLocation.latitude}&longitude=${currentLocation.longitude}`)
    .then((response) => console.log(response))
    .catch((err) => console.log(err));

或

 await myApi
 .get("/routeHere", {
    params: {
      latitude: currentLocation.latitude,
      longitude: currentLocation.longitude,
    }
 })
.then((response) => console.log(response))
.catch((err) => console.log(err));

并且您可以在后端使用 req.query.latitude 和 req.query.longitude

接收它

我的 express.js 没有收到我从 React Native 发送的 body

My express.js is not receiving the body that I sent from react native

javascript

node.js

express

react-native