in react native, I use the uri returned in react native image picker to upload the image to Qiniuyun. The url opening of the image returned by the downloaded api on Qiniuyun is a text file upload code: `/ / upload 
 const upload = async (file, token) = > {
const formData = new FormData();
formData.append("token", token);
formData.append("file", file);
const key = await fetch(env.api.QINIUUP_URL, {
    method: "POST",
    headers: {
      "content-Type": "multipart/form-data",
    },
    body: formData,
  })
  .then(response => (response.json()))
  .catch(error => {
      console.log(error);
  });
return key;}; `
 file is the local image address returned by react-native-image-picker 
 Qiniuyun downloads the api of url and returns the url open text file as shown in the following figure 
  
 
 the picture can be opened on the computer simulated uploaded by postman 
 I hope I can open url to see the picture 
