Google App Engine Drive API閱讀文件內容（返回undefined）

Question

我想要讀取文件內容，但webContentLink正在變成undefined.But其他值實現。我不明白。這是我的代碼部分：

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({'q': "title contains '--'"}); 
    request.execute(function(resp) { 

     for (i=0; i<resp.items.length; i++) { 
      alert(resp.items[i].webContentLink);//problem is here turning undefined 
      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); 
     } 
    });  
} 

Answer 1

它與html文件一起使用！ Webcontentlink不適用於文本文件。