Question

我正在开发在asp.net Web应用程序中使用KendoUI datagrid的Angular 2应用程序。我已将index.html设置为启动页面。当我按F5时，index.html加载。单击Risks菜单显示数据网格，其中包含risk-list.component.html页面中定义的数据。其网址为localhost/risks。如果我按F5，我会收到 404页面未找到错误。有人可以告诉我问题是什么，我该如何解决？

这是我的代码：

风险list.Component.ts

import { Component, OnInit } from '@angular/core';
import { Risk } from './risk';
import { RiskService } from './risk.service';

@Component({
    moduleId: module.id,
    selector: 'rm-risks',
    templateUrl: '/app/risk-list.component.html',
    providers: [RiskService]
})

export class RiskListComponent implements OnInit {
    title = 'Risk List';
     risks: Risk[];

    constructor(private _riskService: RiskService) {
        console.log(this.risks);
    }

    getRisks(): void {
        this._riskService.getRisks().then(risks => this.risks = risks);

    }

    ngOnInit(): void {
        this.getRisks();
    }
};

风险list.component.html

<kendo-grid [data]="risks">
    <kendo-grid-column field="reference" title="Reference" width="120">
    </kendo-grid-column>
    <kendo-grid-column field="insuredName" title="Insured Name">
    </kendo-grid-column>
    <kendo-grid-column field="inceptionDate" title="Inception Date" width="230">
    </kendo-grid-column>
    <kendo-grid-column field="riskType" title="Risk Type" width="120">
    </kendo-grid-column>
    <kendo-grid-column field="Status" title="Status">
    </kendo-grid-column>
    <kendo-grid-column field="grossPremium" title="Gross Premium" width="230">
    </kendo-grid-column>
    <kendo-grid-column field="allocatedTo" title="Allocated To" width="120">
    </kendo-grid-column>
    <kendo-grid-column field="allocatedCompany" title="Allocated Company">
    </kendo-grid-column>
    <kendo-grid-column field="Discontinued" width="120">
        <template kendoCellTemplate let-dataItem>
            <input type="checkbox" [checked]="dataItem.Discontinued" disabled />
        </template>
    </kendo-grid-column>
</kendo-grid>

risk.service.ts

import { Injectable } from '@angular/core';
import { Risk } from './risk';
import { Risks } from './mock-risk';
import { Http, Response } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/from';


@Injectable()
export class RiskService {

    getRisks(): Promise<Risk[]> {
        return Promise.resolve(Risks);
    }

}

risk.ts

export class Risk {
    riskId: number;
    reference: string;
    insuredName: string;
    inceptionDate: string;
    riskType: string;
    status: string;
    grossPremium: number;
    allocatedTo: string;
    allocatedCompany: string;

}

模拟risk.ts

import { Risk } from './risk'

export const Risks: Risk[] = [

    {

        "riskId": 1,
        "reference": "HISC9308336",
        "insuredName": "SA 84161",
        "inceptionDate": "March 19, 2016",
        "riskType": "Quote",
        "status": "Indication",
        "grossPremium": 100,
        "allocatedTo": "Broker User",
        "allocatedCompany": "Broker"
    },
    {

        riskId: 2,
        reference: "HISC9308337",
        insuredName: "SA 84161",
        inceptionDate: 'April 22, 2016',
        riskType: 'Quote',
        status: 'Indication',
        grossPremium: 300,
        allocatedTo: 'Broker User',
        allocatedCompany: 'Broker'
    }

];

risks.module.ts

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { RiskListComponent } from './risk-list.component';
import { RiskService } from './risk.service';
import { RiskRoutingModule } from './risks-routing.module';
import { GridModule } from '@progress/kendo-angular-grid';
@NgModule({
    imports: [
        CommonModule,
        FormsModule,
        RiskRoutingModule,
        GridModule

    ],
    declarations: [
        RiskListComponent
    ],
    providers: [
        RiskService
    ]
})
export class RisksModule { }

风险-routing.module.ts

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

@NgModule({
    imports: [
        RouterModule.forChild([
            { path: 'risks', component: RiskListComponent }
        ])
    ],
    exports: [
        RouterModule
    ]
})
export class RiskRoutingModule { }

app.component.html

<h1>Angular Router</h1>
<nav>
    <a routerLink="/risks" routerLinkActive="active">Risks</a>

</nav>
<router-outlet></router-outlet>

app.component.ts

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

    @Component({
        moduleId: module.id,
        selector: 'my-app',
        templateUrl:'/app/app.component.html'
    })
    export class AppComponent { }

应用-routing.module.ts

import { NgModule } from '@angular/core';
import { RouterModule } from '@angular/router';
import { RiskListComponent } from './risk-list.component'
import { HomeComponent } from './home.component'

@NgModule({
    imports: [
        RouterModule.forRoot([

            { path: '', component: HomeComponent }
        ])
    ],
    exports: [
        RouterModule
    ]
})
export class AppRoutingModule { }

main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

import { AppModule } from './app.module';

platformBrowserDynamic().bootstrapModule(AppModule);

Answer 1

通过实施HashLocationStrategy向所有路由添加#来解决此问题。例如，http://localhost/myComponent变为http://localhost/#/myComponent。您可以通过将HashLocationStrategy添加到AppModule的提供商来实现此目的：

{ provide: LocationStrategy, useClass: HashLocationStrategy }

当然，您需要从LocationStrategy导入HashLocationStrategy和@angular/common：

import { LocationStrategy, HashLocationStrategy } from '@angular/common';

有关详情，请查看Angular 2 Router & Navigation - Browser URL Styles。

Answer 2

找不到此Error404页面的最佳方法，您应将HashLocationStrategy导入appModule.ts

当我之前处理Angular时，我的Project中出现了相同类型的错误，因此我为这种错误创建了一个简单的存储库（404 Page Not Found），它可能对您有所帮助。这是链接 - ＆gt; AngularAppExample

Answer 3

当刷新浏览器时，它将使用当前url向服务器发送get请求，因为angular使用HTML 5样式导航，该url对服务器没有意义。更新服务器以在特定路径上提供index.html或使用data _null_; charField="Result quantity1 = -139 quantity2 = 458 ..."; resultNumber = input(compress(scan(charField,4,' '),''),best6.); put (_all_) (=); run;。

使用HTML 5样式导航的好处是您可以将角度应用程序与服务器呈现的页面混合使用。

使用asp.net进行此操作的示例：http://blog.johnnyreilly.com/2015/05/a-tale-of-angular-html5mode-aspnet-mvc.html

更多关于角度的阅读：https://angular.io/docs/ts/latest/guide/router.html#!#browser-url-styles

刷新angular 2应用程序正在生成错误404 - 找不到页面异常

3 个答案: