传递到 handle 的 event 对象是同一个对象 - RequestEvent 的一个实例 - 传递到 +server.js 文件中的 API 路由、+page.server.js 文件中的 表单操作 以及 +page.server.js 和 +layout.server.js 中的 load 函数。

¥The event object passed into handle is the same object — an instance of a RequestEvent — that is passed into API routes in +server.js files, form actions in +page.server.js files, and load functions in +page.server.js and +layout.server.js.

它包含许多有用的属性和方法，其中一些我们已经遇到过：

¥It contains a number of useful properties and methods, some of which we’ve already encountered:

• cookies — cookies API

• fetch — 标准 Fetch API，具有附加功能

  ¥fetch — the standard Fetch API, with additional powers

• getClientAddress() — 获取客户端 IP 地址的函数

  ¥getClientAddress() — a function to get the client’s IP address

• isDataRequest — 如果浏览器在客户端导航期间请求页面数据，则为 true；如果直接请求页面/路由，则为 false

  ¥isDataRequest — true if the browser is requesting data for a page during client-side navigation, false if a page/route is being requested directly

• locals — 放置任意数据的地方

  ¥locals — a place to put arbitrary data

• params — 路由参数

  ¥params — the route parameters

• request — 请求 对象

  ¥request — the Request object

• route — 具有 id 属性的对象，表示匹配的路由

  ¥route — an object with an id property representing the route that was matched

• setHeaders(...) — 响应上的 设置 HTTP 标头 函数

  ¥setHeaders(...) — a function for setting HTTP headers on the response

• url — 表示当前请求的 URL 对象

  ¥url — a URL object representing the current request

一个有用的模式是在 handle 中向 event.locals 添加一些数据，以便可以在后续的 load 函数中读取它：

¥A useful pattern is to add some data to event.locals in handle so that it can be read in subsequent load functions:

export async function handle({ event, resolve }) {
	event.locals.answer = 42;
	return await resolve(event);
}

export function load(event) {
	return {
		message: `the answer is ${event.locals.answer}`
	};
}