javascript - Angular 1 和 Angular 2 混合应用程序路由问题(不显示 Angular 组件)

Question

我有一个 Angular 1 和 Angular 2 混合应用程序，它是使用以下指南设置的，Upgrading from AngularJS和 Migrating Angular 1 Application to Angular 2 .我的根组件如下所示:

import { NgModule, Component } from '@angular/core';
import { RouterModule, UrlHandlingStrategy } from '@angular/router';
import { BrowserModule } from '@angular/platform-browser';
import { UpgradeModule } from '@angular/upgrade/static';
import { RouterUpgradeInitializer } from '@angular/router/upgrade';
import { MyModule } from './Mymodule/my-module';

export class Ng1Ng2UrlHandlingStrategy implements UrlHandlingStrategy {
    shouldProcessUrl(url: any) {
        return url.toString().startsWith("/Mymodule");
    }

    extract(url: any) {
        return url;
    }

    merge(url: any, whole: any) {
        return url;
    }
}

@Component({
    selector: 'root-component',
    template: `
    <router-outlet></router-outlet>
    <div class="ng-view"></div>
  `
})
export class RootComponent { }

@NgModule({
    imports: [
        BrowserModule,
        UpgradeModule,
        MyModule,

        RouterModule.forRoot([])
    ],
    providers: [
        { provide: UrlHandlingStrategy, useClass: Ng1Ng2UrlHandlingStrategy }
    ],
    bootstrap: [RootComponent],
    declarations: [RootComponent]
})
export class Ng2AppModule {
    constructor(public upgrade: UpgradeModule) { }
}

我的“main.ts”如下:

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { setUpLocationSync } from '@angular/router/upgrade';
import { Ng2AppModule } from "./Angular2/app.rootcomponent";

// This is the entry point for the AngularJS/Angular hybrid application.
// It bootstraps the Angular module 'Ng2AppModule', which in turn bootstraps
// the AngularJS module 'angular1App'.
platformBrowserDynamic().bootstrapModule(Ng2AppModule).then(ref => {
    const upgrade = (<any>ref.instance).upgrade;
    // bootstrap angular1
    upgrade.bootstrap(document.body, ['angular1App']);
    setUpLocationSync(upgrade);
});

模块“MyModule”如下:

import { NgModule } from '@angular/core';
import { RouterModule } from '@angular/router';
import { TestDataListComponent } from './testdata-list.component';

@NgModule({
    imports: [
        RouterModule.forChild([
            {
                path: 'Mymodule', children: [
                    { path: 'testdata', component: TestDataListComponent }
                ]
            }
        ])
    ],
    declarations: [TestDataListComponent ]
})
export class MyModule {

}

“TestDataListComponent”组件非常简单:

import { Component } from '@angular/core';

@Component({
    selector: 'test-data',
    templateUrl: 'App/Angular2/MyModule/testdata-list.component'.html'
})
export class TestDataListComponent{

}

我链接到 Angular 2 组件的方式是在主菜单 HTML 页面中。相关代码如下:

<li id="main-menu" class="menu-top-level" ng-mouseover="cur = 'mymodule'">        
    <a ng-reflect-router-link="/Mymodule/testdata" href="#/Mymodule/testdata">
        MyModule
        <span>
            <i class="fa fa-check-square fa-2x"></i>
        </span>
    </a>
</li>

我遇到的问题是，单击上面的链接会将我带到空白 View ，即未显示组件 TestDataListComponent。但是，如果我在主 Angular 2 模块中替换以下行，即 Ng2AppModule:

RouterModule.forRoot([])

与:

RouterModule.forRoot([], { useHash: true, initialNavigation: false })

component TestDataListComponent 显示正常，但是当我尝试通过单击链接导航回 Angular 1 组件时，页面是空白的，我注意到我的 URL浏览器窗口如下所示:

http://localhost:60813/#/

虽然它看起来应该是这样的:

http://localhost:60813/#/myclients

如果我第二次点击链接，URL 是正确的并且 Angular 1 组件显示正常。

我的 Angular 1 模块 angular1App 的相关部分是:

angular.module("angular1App",
["ngRoute",
 "myInterceptorService",
 "ngStorage",
 "ngAnimate",
 "ui.bootstrap",
 "ngResource",
 "SignalR",
 "ui.select",
 "ngSanitize"])
.config([
    "$routeProvider", "$httpProvider", function($routeProvider, $httpProvider) {

        $httpProvider.interceptors.push("myInterceptorService");

        $routeProvider
            .when('/myclients',
            {
                title: "Client Data",
                controller: "clientDataCtrl",
                templateUrl: "/App/Common/Views/clientData.html"
            })

这里有什么问题？为什么现在显示我的 Angular 2 或 Angular 1 组件？

Answer 1

您的组件问题似乎出在这里:

import { Component } from '@angular/core';

@Component({
    selector: 'test-data',
    templateUrl: 'App/Angular2/MyModule/testdata-list.component'.html'
})
export class TestDataListComponent{

}

你需要添加正确的templateUrl字符串