Google Drive API javascript

Question

我正在嘗試使用Google驅動器列出文件。

使用https://stackoverflow.com/a/11280257中的答案我發現了一個我無法找到原因的問題。

var clientId = '*********.apps.googleusercontent.com';
var apiKey = '##########';
var scopes = 'https://www.googleapis.com/auth/drive';


function handleClientLoad() {
    gapi.client.setApiKey(apiKey);
    window.setTimeout(checkAuth,1);
}

function checkAuth() {
    gapi.auth.authorize({client_id: clientId, scope: scopes, immediate: true},handleAuthResult);
}

function handleAuthResult(authResult) {
    var authorizeButton = document.getElementById('authorize-button');

    if (authResult && !authResult.error) {
        authorizeButton.style.visibility = 'hidden';
        makeApiCall();
    }  
    else {
        authorizeButton.style.visibility = '';
        authorizeButton.onclick = handleAuthClick;
    }
}

function handleAuthClick(event) {
    gapi.auth.authorize({client_id: clientId, scope: [scopes], immediate: false}, handleAuthResult);
    return false;
}

function makeApiCall() {  
    gapi.client.load('drive', 'v2', makeRequest);   
}

function makeRequest()
{
    var request = gapi.client.drive.files.list({'maxResults': 5 });

    request.execute(function(resp) {          
        for (i=0; i<resp.items.length; i++) {
            var titulo = resp.items[i].title;
            var fechaUpd = resp.items[i].modifiedDate;
            var userUpd = resp.items[i].lastModifyingUserName;
            var userEmbed = resp.items[i].embedLink;
            var userAltLink = resp.items[i].alternateLink;

            var fileInfo = document.createElement('li');
            fileInfo.appendChild(document.createTextNode('TITLE: ' + titulo + ' - LAST MODIF: ' + fechaUpd + ' - BY: ' + userUpd ));                
            document.getElementById('content').appendChild(fileInfo);
        }
    });    
}

我有這個錯誤：

Uncaught TypeError: Cannot read property 'files' of undefined 

在線

var request = gapi.client.drive.files.list({'maxResults': 5 });

Answer 1

運用

var request = gapi.client.request({
        'path': '/drive/v2/files',
        'method': 'GET',
        'params': {'maxResults': '1'}
        });

代替

var request = gapi.client.drive.files.list({'maxResults': 5 });

解決了這個問題！

Answer 2

代碼看起來沒問題，你正在等待，直到gapi.client.load完成。 加載Drive JS文件或其他一些問題（可能是錯誤的JS文件緩存？）可能只是一個錯誤。 我修改了你的例子以便在jsfiddle上運行，看看http://jsfiddle.net/Rbg44/4/的完整示例：

HTML：

<button id="authorize-button">Authorize</button>
<div id="content">Files:</div>

JS：

var CLIENT_ID = '...';
var API_KEY = '...';
var SCOPES = '...';

function handleClientLoad() {
    gapi.client.setApiKey(API_KEY);
    window.setTimeout(checkAuth,1);
}

function checkAuth() {
    var options = {
        client_id: CLIENT_ID,
        scope: SCOPES,
        immediate: true
    };
    gapi.auth.authorize(options, handleAuthResult);
}

function handleAuthResult(authResult) {
    var authorizeButton = document.getElementById('authorize-button');

    if (authResult && !authResult.error) {
        authorizeButton.style.visibility = 'hidden';
        makeApiCall();
    } else {
        authorizeButton.style.visibility = '';
        authorizeButton.onclick = handleAuthClick;
    }
}

function handleAuthClick(event) {
    var options = {
        client_id: CLIENT_ID,
        scope: SCOPES,
        immediate: false
    };
    gapi.auth.authorize(options, handleAuthResult);
    return false;
}

function makeApiCall() {  
    gapi.client.load('drive', 'v2', makeRequest);   
}

function makeRequest() {
    var request = gapi.client.drive.files.list({'maxResults': 5 });
    request.execute(function(resp) {          
        for (i=0; i<resp.items.length; i++) {
            var titulo = resp.items[i].title;
            var fechaUpd = resp.items[i].modifiedDate;
            var userUpd = resp.items[i].lastModifyingUserName;
            var userEmbed = resp.items[i].embedLink;
            var userAltLink = resp.items[i].alternateLink;

            var fileInfo = document.createElement('li');
            fileInfo.appendChild(document.createTextNode('TITLE: ' + titulo + 
                ' - LAST MODIF: ' + fechaUpd + ' - BY: ' + userUpd ));                
            document.getElementById('content').appendChild(fileInfo);
        }
    });    
}

$(document).ready(function() {
  $('#authorize-button').on('click', handleAuthClick);
  $.getScript('//apis.google.com/js/api.js', function() {
    gapi.load('auth:client', handleClientLoad);
  });
});

如果在調用gapi.client.load（）時請求中出現任何問題，您可以檢查瀏覽器開發工具嗎？

Answer 3

你需要寫這個：

gapi.client.load('drive', 'v2', null);