如何从 App Engine 服务器获取错误消息？

Question

我正在运行使用这个端点连接一个简单的 Node Express 服务器

app.get('/', (req, res) => {
  res.send("Success!");
});

当我在本地或通过 App Engine 运行此服务器并联系端点时，我收到了预期的响应 "Success!"。

为确保我能收到错误消息，我将端点更改为

app.get('/', (req, res) => {
  throw new Error("A useful error message")
});

当我在本地运行此服务器并联系端点时，我按预期收到消息 Error: A useful error message。但是当我运行带有 App Engine 的服务器并联系端点时，我收到消息 Internal Server Error。有没有办法让 App Engine return 我从服务器抛出的特定错误消息？

Answer 1

您可以在 Stackdriver Logging 上查看错误消息：

   Error: A useful error message at app.get (/srv/app.js:32:9) at Layer.handle [as handle_request] (/srv/node_modules/express/lib/router/layer.js:95:5) at next (/srv/node_modules/express/lib/router/route.js:137:13) at Route.dispatch (/srv/node_modules/express/lib/router/route.js:112:3) at Layer.handle [as handle_request] (/srv/node_modules/express/lib/router/layer.js:95:5) at /srv/node_modules/express/lib/router/index.js:281:22 at Function.process_params (/srv/node_modules/express/lib/router/index.js:335:12) at next (/srv/node_modules/express/lib/router/index.js:275:10) at expressInit (/srv/node_modules/express/lib/middleware/init.js:40:5) at Layer.handle [as handle_request] (/srv/node_modules/express/lib/router/layer.js:95:5)

或者您可以运行 :

     gcloud app logs read --limit 5

     Error: A useful error message      at app.get (/srv/app.js:32:9)      at Layer.handle [as handle_request] (/srv/node_modules/express/lib/router/layer.js:95:5)      at next (/srv/node_modules/express/lib/router/route.js:137:13)      at Route.dispatch (/srv/node_modules/express/lib/router/route.js:112:3)      at Layer.handle [as handle_request] (/srv/node_modules/express/lib/router/layer.js:95:5)      at /srv/node_modules/express/lib/router/index.js:281:22      at Function.process_params (/srv/node_modules/express/lib/router/index.js:335:12)      at next (/srv/node_modules/express/lib/router/index.js:275:10)      at expressInit (/srv/node_modules/express/lib/middleware/init.js:40:5)      at Layer.handle [as handle_request] (/srv/node_modules/express/lib/router/layer.js:95:5)

如何从 App Engine 服务器获取错误消息？

How to get an error message from an App Engine server?

google-app-engine

express

google-appengine-node