在axios请求中,使用FormData对象来包装图像文件,并设置正确的请求头。 在axios请求的回调函数中,可以处理上传成功或失败的情况。 下面是一个示例代码: 代码语言:txt 复制 import React, { useState } from 'react'; import axios from 'axios'; const ImageUploader = () => { const [selectedFile, ...
2. 拿到id调用获取图片的接口 获取后端返回一个图片文件 进行base64转化 放入img图片中 进行图片展示 二.实现步骤 1.使用Upload的customRequest属性 实现自定义的请求方式 封装文件上传方法 http.js import axios from 'axios'; const http=axios.create({ headers: { appId:'8a8a8','TM-Header-AppId': 'xixi'...
方法一:用原生方法实现 importReact,{Component}from'react';import$from'jquery';import{Input,Form,message}from'antd';import'antd/dist/antd.css';import'./App.css';classAppextendsComponent{state={fileList:[],file1:{},fileList2:[],file2:{},imageUrl:'',input1:{},input2:{},resdata:"",upl...
This problem also occurs on a fresh clean react native project. The dependencies used in the new project were "axios": "0.19.2", "react": "17.0.2", "react-native": "0.67.4", "react-native-image-picker": "3.4.0" The code used was: const instance = axios.create({ baseURL: ENV...
import React, { Component } from 'react'; import axios from "axios"; 反应组件类: class FileUpload extends Component { // API Endpoints custom_file_upload_url = `YOUR_API_ENDPOINT_SHOULD_GOES_HERE`; constructor(props) { super(props); this.state = { image_file: null, image_preview: ...
在 React 中,我们可以通过 fetch 或axios 等库来实现文件的上传。 基本实现 创建文件上传组件 首先,我们创建一个简单的文件上传组件: 代码语言:jsx 复制 import React, { useState } from 'react'; const FileUpload = () => { const [file, setFile] = useState(null); const handleFileChange = (e) ...
方法一:用原生方法实现 参考我发在github上的App.js文件https://github.com/topvae/upload importReact,{Component}from'react';import$ from'jquery';import{Input,Form,message}from'antd';import'antd/dist/antd.css';import'./App.css';classAppextendsComponent{state={fileList:[],file1:{},fileList2:[...
2. react 条件渲染,两种写法: (1)let example = <Example {...props} />,再在 render 中引用 { example }; (2)直接在 render 中: { condition === value ? (1) : (2) }; 3. 对于多个接口相同,参数不同的请求,使用 axios.all(),具体用法: import axios from 'axios' ...
Here’s the relevant code that I’m using to upload the image: import axios from 'axios'; import * as ImagePicker from 'expo-image-picker'; import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3'; import 'react-native-get-random-values'; // This polyfills cr...
import React from "react"; import axios from "axios"; const FileUpload = () => { const handleFileUpload = (event) => { // get the selected file from the input const file = event.target.files[0]; // create a new FormData object and append the file to it const formData = new ...