如何在uniapp中实现图片上传和相册管理

uni.chooseImage({
  count: 1,
  success: res => {
    const tempFilePaths = res.tempFilePaths
    uni.uploadFile({
      url: 'http://example.com/upload', // 上传图片的接口地址
      filePath: tempFilePaths[0],
      name: 'file',
      success: res => {
        console.log(res.data) // 上传成功后的返回数据
      }
    })
  }
})

// index.js
const express = require('express')
const multer = require('multer')

const app = express()
const upload = multer({ dest: 'uploads/' })

app.post('/upload', upload.single('file'), (req, res) => {
  // 处理上传的文件
  console.log(req.file) // 上传的文件信息
  res.send('Upload success')
})

app.listen(3000, () => {
  console.log('Server started on port 3000')
})

uni.chooseImage({
  count: 9,
  success: res => {
    const tempFilePaths = res.tempFilePaths
    console.log(tempFilePaths) // 选择的图片临时文件路径数组
  }
})

uni.previewImage({
  urls: ['img1.jpg', 'img2.jpg'], // 图片地址数组
  current: 'img1.jpg', // 当前显示的图片地址
  success: res => {
    console.log('预览图片成功')
  }
})

uni.showActionSheet({
  itemList: ['保存图片'],
  success: res => {
    if (res.tapIndex === 0) {
      console.log('保存图片')
    }
  }
})