react-native android 获取 Blob JSON 而不是 S3 预签名 URL 中的图像文件

Question

我正在尝试使用 react-native-image-picker 和预签名 URL 从 android 上传图片，但得到的是一张没有内容的图片，如果我更改图片文件扩展名到 JSON，我得到 JSON 格式的 blob 内容，如下所示

{"_data":{"lastModified":0,"name":"rn_image_picker_lib_temp_e47f0064-c49c-439e-95e2-30ed167d1444.jpg","size":2447490,"offset":0,"type":"image/jpeg","blobId":"8d905790-3113-4cb7-b9ab-b5415e5e6b50","__collector":{}}}

以下是 Axios 请求和组件的代码片段

// HTTP Requests

export const save = async (uri, data, type) => 
    await axios.put(uri, data, {headers: {'Content-Type': type,  Accept: "application/json"}}) 
        .then(response => {
            return response.data;
        }, error => {
            return error.response.data;
        });

export const getImageURI = async id =>
    await axios.post(URL + id) 
        .then(response => {
            return response.data;
        }, error => {
            return error.response.data;
        });

import React from 'react';
import { TouchableOpacity } from 'react-native';
import { launchImageLibrary } from 'react-native-image-picker';
import { getImageURI, save } from '../Services';

const UploadImage = (props) => {
  const uploadImageOnS3 = async (file) => {
    const res = await fetch(file.uri);
    const blob = await res.blob();
    let signedUriResp = await getImageURI("someId");
    await save(signedUriResp.url, blob, file.type);
  }

  return (
     <TouchableOpacity  onPress={() =>  
          launchImageLibrary({mediaType: 'photo', includeBase64: true}, 
              (response) => uploadImageOnS3(response))} 
     />
  );
}
export default UploadImage;

版本：

"react-native-image-picker": "3.2.1",
"react-native": "0.63.4",
"react": "16.13.1",
"axios": "^0.21.1",

我已向 android 中的应用程序授予相机和存储权限。不确定为什么 blob 没有作为图像正确上传到 S3。有没有人遇到过类似的问题？请让我知道是否有任何遗漏。

Answer 1

在保存图像调用中将 axios 更改为 fetch 解决了这个问题。这是上述方法的片段

export const save = async (data, uri, type) =>
  await fetch(uri, {
    method: 'PUT',
    headers: {
      Accept: 'application/json',
      'Content-Type': type
    },
    body: data
  });

react-native android 获取 Blob JSON 而不是 S3 预签名 URL 中的图像文件

react-native android getting Blob JSON instead of image file in S3 pre-signed URL

android

react-native

amazon-s3

file-upload

blob