React Native Blob上传

记录下React Native中上传Blob的坑。

需要设置Content-Type为multipart/form-data

const upload = async (formData) => {
  const response = await axios.post('http://localhost:3000/upload', formData, {
    headers: {
      'Content-Type': 'multipart/form-data',
    },
  });
};

需要给出文件路径

const image = 'file://path/to/image.png';
const file = {
    uri:
        Platform.OS === 'ios'
        ? image.replace('file://', '')
        : image,
    name: `photo.${fileType}`,
    type: `image/${fileType}`,
};

不知道为什么，直接传Blob并不能上传成功

参考

https://github.com/facebook/react-native/issues/35698