Angular2 路由器保留查询字符串 [英] Angular2 router keep query string

问题描述

我编写了一个使用路由器的 Angular2 (v2.0.1) 应用程序.该网站加载了多个查询字符串参数，因此完整 URL 最初如下所示:

I wrote an Angular2 (v2.0.1) application that makes use of the router. The website is loaded with several query string parameters, so the full URL initially looks like this:

https://my.application.com/?param1=val1&param2=val2&param3=val3

在我的路由配置中，我有一个重定向空路由的条目:

In my route configuration, I have an entry which redirects an empty route:

const appRoutes: Routes = [
    {
        path: '',
        redirectTo: '/comp1',
        pathMatch: 'full'
    },
    {
        path: 'comp1',
        component: FirstComponent
    },
    {
        path: 'comp2',
        component: SecondComponent
    }
];

我的问题是，在应用程序启动后，URL 不再包含查询参数，而是如下所示:

My problem is, that after the app has been bootstrapped, the URL does not contain the query parameters anymore, instead it looks like this:

https://my.application.com/comp1

有什么办法可以配置路由器，使其在导航时保留初始查询字符串?

Is there any way I can configure the router so that it keeps the initial query string when navigating?

谢谢
卢卡斯

推荐答案

我认为没有办法在路由配置中定义它.

I don't think there is a way to define that in the routes configuration.

目前支持routerLinks和命令式导航启用

Currently it is supported for routerLinks and imperative navigation to enable

• preserveQueryParams 和
• preserveFragment

您可以为空路径路由添加一个守卫，在守卫中导航到 /comp1 路线.

You can add a guard to the empty path route, where in the guard navigation to the /comp1 route is done.

router.navigate(['/comp1'], { preserveQueryParams: true }); //deprecated. see update note

router.navigate(['/comp1'], { queryParamsHandling: "merge" });

有一个 PR 允许配置 preserveQueryParams全球.

There is a PR to allow to configure preserveQueryParams globally.

更新说明:来自https://angular.io/api/router/NavigationExtras，preserveQueryParams 已弃用，改用 queryParamsHandling

Update note: from https://angular.io/api/router/NavigationExtras, preserveQueryParams is deprecated, use queryParamsHandling instead

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