想要在全局中间件中获取ctx._matchedRoute 有什么办法吗？

[9yuntu]

需求：想在自定义的全局中间件里获取到 ctx._matchedRoute

部分代码

/app/middleware/test.js

console.log('ctx._matchedRoute',ctx._matchedRoute);
// 输出 ctx._matchedRoute : undefined

/config/config.default.js 配置

// 中间件
config.middleware = ['test'];

目前研究了一下，发现将test中间件单独挂载在某个路由上是能拿到 ctx._matchedRoute 的，这应该是egg的加载路由、中间件的顺序导致的。

但是还是不死心的想问问想要在全局中间件中获取ctx._matchedRoute 有什么办法吗？

[egg-bot]

Translation of this issue:

---

Is there any way to get ctx._matchedRoute in the global middleware?

Requirements: I want to get ctx._matchedRoute in a custom global middleware

Part of the code

/app/middleware/test.js

Console.log('ctx._matchedRoute',ctx._matchedRoute);
// output ctx._matchedRoute : undefined

/config/config.default.js configuration

// middleware
Config.middleware = ['test'];

At present, I have studied it and found that the test middleware can be mounted on a certain route to get ctx._matchedRoute. This should be caused by the order of loading routes and middleware of egg.

But still do not give up want to ask ** Do you want to get ctx._matchedRoute in the global middleware? **

[atian25]

XY 问题。

还是来说说你的原始需求吧，是不是想做权限管理啥的？

[9yuntu]

好吧，原始需求

想自定义一个全局中间件，用于权限管理，代码如下

module.exports = (options, app) => {
	return async function aclMiddleware(ctx, next) {
		//获取当前请求所匹配的 path-pattern		
		console.log("ctx._matchedRoute : ",ctx._matchedRoute)
				
		const key = ctx.request.method.toString() + "__" + ctx._matchedRoute.toString();		
		
		const rights = await ctx.app.redis.get(key);

		console.log("rights", rights);

		if (rights) {
			console.log('权限验证成功');
			await next();
		} else {
			ctx.status = 422;
			ctx.body = {
				err: '没有权限',
				msg: '未授权的请求'
			};
		}


	}
};

其中ctx._matchedRoute 输出结果为undefined，想请问如何解决在全局中间件中获取path-pattern

[popomore]

放到 router middleware 试试

app.get('/', app.middleware.aclMiddleware(), 'controller');

[9yuntu]

谢谢，放到 router middleware 是可以的

[atian25]

执行顺序问题， global middleware -> router mapping -> router middleware -> controller