我正在尝试将图像上传到谷歌驱动器。我按照本教程上传文件，我可以上传一个简单的文件，但是当我尝试上传图像时，我的图像已损坏。实际上，文件已上传，但我想查看的图像已损坏。我知道问题出在请求的正文中，但我不知道在哪里，因为这是一种奇怪的方式（边界、分隔符等）。除了图像的内容外，一切正常，因此您只需要查看上传图像的 post 方法。这是我的代码：

import { Upload } from 'antd';
import React, { Component } from 'react';

var SCOPE = 'https://www.googleapis.com/auth/drive.file';
var discoveryUrl = 'https://www.googleapis.com/discovery/v1/apis/drive/v3/rest';


class App extends Component {
  state = {
    name: '',
    googleAuth: '',
    body: ''
  }
  componentDidMount(){
    var script = document.createElement('script');
    script.onload=this.handleClientLoad;
    script.src="https://apis.google.com/js/api.js";
    document.body.appendChild(script);
  }


  initClient = () => {
    try{
      window.gapi.client.init({
          'apiKey': "apikey",
          'clientId': "clientid",
          'scope': SCOPE,
          'discoveryDocs': [discoveryUrl]
        }).then(() => {
          this.setState({
            googleAuth: window.gapi.auth2.getAuthInstance()
          })
          this.state.googleAuth.isSignedIn.listen(this.updateSigninStatus);  
         document.getElementById('signin-btn').addEventListener('click', this.signInFunction);
         document.getElementById('signout-btn').addEventListener('click', this.signOutFunction);

      });
    }catch(e){
      console.log(e);
    }
  }


  signInFunction =()=>{
    console.log(this.state.googleAuth)
    this.state.googleAuth.signIn();
    console.log(this.state.googleAuth)
    this.updateSigninStatus()
  }

  signOutFunction =()=>{
    this.state.googleAuth.signOut();
    this.updateSigninStatus()
  }

  updateSigninStatus = ()=> {
    this.setSigninStatus();
  }

  setSigninStatus= async ()=>{
    console.log(this.state.googleAuth.currentUser.get())
    var user = this.state.googleAuth.currentUser.get();
    console.log(user)
    if (user.wc == null){
      this.setState({
        name: ''
      });
    }
    else{
      var isAuthorized = user.hasGrantedScopes(SCOPE);
      if(isAuthorized){
        console.log('USER')
        console.log(user)
        this.setState({
          name: user.vt.Ad
        });

        const boundary = '-------314159265358979323846';
        const delimiter = "\r\n--" + boundary + "\r\n";
        const close_delim = "\r\n--" + boundary + "--";
        var fileName='mychat123.png';
        var contentType='image/png'
        var metadata = {
          'name': fileName,
          'mimeType': contentType
        };

          var multipartRequestBody =
            delimiter +  'Content-Type: application/json\r\n\r\n' +
            JSON.stringify(metadata) +
            delimiter +
            'Content-Type: ' + contentType + '\r\n';

            multipartRequestBody +=  + '\r\n' + this.state.body;
            multipartRequestBody += close_delim;

          console.log(multipartRequestBody);
          var request = window.gapi.client.request({
            'path': 'https://www.googleapis.com/upload/drive/v3/files',
            'method': 'POST',
            'params': {'uploadType': 'multipart'},
            'headers': {
              'Content-Type': contentType
            },
            'body': multipartRequestBody
          });

        request.execute(function(file) {
          console.log(file)
        });
      }
    }
  }

  getBase64(file) {
    return new Promise((resolve, reject) => {
      const reader = new FileReader();
      reader.readAsDataURL(file);
      reader.onload = () => resolve(reader.result);
      reader.onerror = error => reject(error);
    });
  }
  

  handleChange = async file => {
    let image

    if (file.currentTarget) {
      image = file.currentTarget.currentSrc;
      console.log(file.currentTarget)
    } else {
      if (!file.file.url && !file.file.preview) {
        file.file.preview = await this.getBase64(file.file.originFileObj);
      }
      image = file.file.preview;
      console.log(file.file)
      this.setState({
        body: file.file.preview
      });
    }

    console.log(image)
    
  }

  handleClientLoad = ()=>{
    window.gapi.load('client:auth2', this.initClient);
  }

  render() {
    return (
      <div className="App">
        <Upload 
          style={{width: '100%', height: '200px' }} 
          listType="picture-card" 
          onChange={this.handleChange} >
          <div>
            <div style={{ marginTop: 8 }}>Subir imagen</div>
          </div>
        </Upload>
        <div>UserName: <strong>{ this.state.name}</strong></div>
        <button id="signin-btn">Sign In</button>
        <button id="signout-btn">Sign Out</button>
      </div>
    );
  }
}

export default App;

为什么我的文件损坏了？它说这不是 PNG 文件。将图像上传到驱动器的正确方法是什么？谢谢！！