我可以通过网络浏览器从Google API获得正确的响应。据说,当我访问时https://www.googleapis.com/blogger/v3/blogs/4871538073781423026?access_token=XXXXXXXX通过某些网络浏览器,然后获得正确的响应,例如
{
"kind": "blogger#blog",
"id": "4871538073781423026",
"name": "SoffeeShop",
"description": "",
"published": "2012-10-24T23:55:32+09:00",
"updated": "2015-03-04T14:31:00+09:00",
"url": "http://soffeeshop.blogspot.com/",
"selfLink": "https://www.googleapis.com/blogger/v3/blogs/4871538073781423026",
"posts": {
"totalItems": 58,
"selfLink": "https://www.googleapis.com/blogger/v3/blogs/4871538073781423026/posts"
},
"pages": {
"totalItems": 0,
"selfLink": "https://www.googleapis.com/blogger/v3/blogs/4871538073781423026/pages"
},
"locale": {
"language": "en",
"country": "",
"variant": ""
}
}
虽然,当我在 GAE 中使用 servlet 做 REST 时,就像
URL url = new URL("https://www.googleapis.com/blogger/v3/blogs/4871538073781423026?access_token=XXXXXXXXX");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setRequestProperty("X-Appengine-Inbound-Appid", "XXXXX");
connection.setRequestProperty("Accept", "application/json");
connection.setRequestProperty("Host", "googleapis.com");
或
URL url = new URL("https://www.googleapis.com/blogger/v3/blogs/4871538073781423026);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setRequestProperty("Authorization", "Bearer " + access_token);
connection.setRequestProperty("X-Appengine-Inbound-Appid", "XXXXX");
connection.setRequestProperty("Accept", "application/json");
connection.setRequestProperty("Host", "googleapis.com");
我刚刚收到"404 未找到"错误。
我可以在GAE的同一个servlet中使用相同的HttpURLConnection与OAuth2 access_token,我不能只访问Google API。因此,这意味着 Http 连接可以很好地访问其他服务器,但看起来 Google API 拒绝了来自 GAE 中 servlet 的访问。
如何在GAE中通过servlet访问Google API或Blogger API?请帮助我。
在 Google 开发者控制台的 GAE 项目中启用 blogger API,它可能会问您一些问题,例如"您希望如何使用 Blogger API?
您是否向 GAE 应用提供了访问 Blogger API 的权限。我认为当您在应用程序的开发人员控制台中生成 clientId 时,您必须在重定向 URIS 中提供应用程序的名称作为 http://app-id.appspot.com。我认为这将解决您的问题。