Firebase Storage存储文本显示为数字而非预期字符串的问题

我在React Native项目中使用Firebase Storage存储用户反馈文本，相关代码如下：

import { StyleSheet, Text, View, TextInput} from 'react-native'
import React , { useState} from 'react'

import { storage} from '../firebase'
import { Button  } from '@rneui/themed';
import { uploadString } from 'firebase/storage';
import { ref as sRef } from 'firebase/storage';
import 'react-native-get-random-values'
import {v1} from 'uuid'

const Reviews = ({route}) => {
  const paramKey = route.params.paramKey1
  const paramKey1 = route.params.paramKey2
  console.log("Path: " + paramKey)
  console.log("Shop: " +paramKey1)
  const feedback = "Post"
  
  const [todoDatafb, setToDoDatafb] = useState("")
  
  const handlefb = async () => {
    const fb = sRef(storage, paramKey + `/${feedback + v1()}.txt`);
    uploadString(fb, todoDatafb).then((snapshot) => {
      console.log('Uploaded new feedback')
    })
  }    
  console.log(todoDatafb)
   
  return (
    <View style = {styles.container}>
       <Text style = {styles.header}>Shop Name</Text>
       <Text style = {styles.text}>{paramKey1}</Text>
       <View style={{
        borderBottomColor: 'black',
        borderBottomWidth: StyleSheet.hairlineWidth,
        }}
      />
      <View style = {styles.inputContainer}> 
            <Text>   Feedback:   <Button
                onPress = {handlefb}
                title = "Post"
                buttonStyle={{
                  backgroundColor: 'black',
                  borderWidth: 2,
                  borderColor: 'white',
                  borderRadius: 30,
              }}
              /></Text>
            <TextInput
                editable
                multiline
                numberOfLines={5}
                maxLength={500}
                placeholder = "Key in for any feedback for the shop" 
                value = {todoDatafb}
                onChangeText ={text => setToDoDatafb(text)}
                style = {styles.input} 
            />
            <Text>  Feedback by others:</Text>
        </View> 
    </View>
  )
}

export default Reviews

发布成功后，控制台日志显示todoDatafb为正确字符串（如"Awesome"），Firebase Storage控制台显示文件已存储，但下载后内容是一串数字而非预期字符串。参考YouTube教程，教程中存储的.txt文件正常显示文字。

更新：我在handlefb函数中添加日志：

const handlefb = async () => {
    const fb = sRef(storage, paramKey + `/${feedback + v1()}.txt`);
    console.log("Right before uploadString: " + todoDatafb)
    uploadString(fb, todoDatafb).then((snapshot) => {
      console.log('Uploaded new feedback')
      console.log("In uploadString: " + todoDatafb)
    })
  }    

日志显示上传前后todoDatafb均为正确字符串，请问为何下载文件显示数字？

问题出在uploadString的默认行为：该方法默认会把传入的字符串当作base64编码处理，导致你的普通文本被错误编码，下载后解析成了字节数值。

只需在调用uploadString时，指定第三个参数为'raw'，明确告知Firebase这是原始文本内容，不需要进行编码转换：

const handlefb = async () => {
    const fb = sRef(storage, paramKey + `/${feedback + v1()}.txt`);
    console.log("Right before uploadString: " + todoDatafb)
    // 添加第三个参数'raw'
    uploadString(fb, todoDatafb, 'raw').then((snapshot) => {
      console.log('Uploaded new feedback')
      console.log("In uploadString: " + todoDatafb)
    })
  }    

这样上传的文本会以原始字符串形式存储在Firebase Storage中，下载后就能正常显示预期的文字内容了。

内容的提问来源于stack exchange，提问作者L.Calvin