在SAPUI5 中，资源通常用作Modules，这个我们将用Message Toast 来实现告警功能

修改controller.js

webapp/controller/App.controller.js

sap.ui.define(["sap/ui/core/mvc/Controller","sap/m/MessageToast"
], (Controller, MessageToast) => {"use strict";return Controller.extend("ui5.walkthrough.controller.App", {onShowHello() {MessageToast.show("Hello World");}});
});

Conventions

• Use sap.ui.define for controllers and all other JavaScript modules to define a global namespace. With the namespace, the object can be addressed throughout the application.

• Use sap.ui.require for asynchronously loading dependencies but without declaring a namespace, for example code that just needs to be executed, but does not need to be called from other code.

• Use the name of the artifact to load for naming the function parameters (without namespace).

实现效果如下：