我是Google云端存储新手，我正在尝试创建一个Angular服务来执行Google Storage API调用。当我尝试列出存储桶时，出现错误：
"Error: gapi.client.storage is undefined"
如何确保云存储API已加载并正常运行？
从控制器调用：
var apiKey = 'MY API KEY';
var projectId = 'MY PROJECT ID FROM GOOGLE STORAGE';
var clientId = 'MY CLIENT ID FROM GOOGLE STORAGE'
googleCloudService.handleClientLoad(apiKey);
googleCloudService.initializeApi('v1');
googleCloudService.listBuckets(projectId); // <- Throws the Console Errror
googleCloudService：
/**
* Set required API keys and check authentication status.
*/
this.handleClientLoad = function(apiKey) {
gapi.client.setApiKey(apiKey);
};
/**
* Load the Google Cloud Storage API.
*/
this.initializeApi = function(apiVersion){
gapi.client.load('storage', apiVersion).then(function success(res) {
console.log('loaded storage api');
},
function error(res) {
return alert('Error loading storage api: ' + JSON.stringify(res)); // throw error
});
};
/**
* Google Cloud Storage API request to retrieve the list of buckets in
* your Google Cloud Storage project.
*/
this.listBuckets = function(projectId) {
var request = gapi.client.storage.buckets.list({ // <-- ERROR
'project': projectId
});
console.log(request);
};