Question

我是Angular 2的新手，我在ngx-translate组件中遇到以下问题（通过服务器上的Http请求的URL必须是绝对的.URL：./ assets / i18n / en.json）。我确信这个en.json文件存在，因为我向它发出http请求并且请求成功

这是我的app.module.server.ts文件：

import { NgModule } from '@angular/core';
import { ServerModule } from '@angular/platform-server';
import { sharedConfig } from './app.module.shared';
import { HttpModule, Http } from '@angular/http';
import {
    TranslateModule,
    TranslateLoader,
    MissingTranslationHandler,
    MissingTranslationHandlerParams
} from '@ngx-translate/core';
import { TranslateHttpLoader } from '@ngx-translate/http-loader';

export function createTranslateLoader(http: Http) {
    return new TranslateHttpLoader(http, './assets/i18n/', '.json');
}

export class MyMissingTranslationHandler implements MissingTranslationHandler {
    handle(params: MissingTranslationHandlerParams) {
        return '[' + params.key + ']';
    }
}

@NgModule({
    bootstrap: sharedConfig.bootstrap,
    declarations: sharedConfig.declarations,
    imports: [
        ServerModule,
        HttpModule,
        TranslateModule.forRoot({
            loader: {
                provide: TranslateLoader,
                useFactory: (createTranslateLoader),
                deps: [Http]
            }
        }),
        ...sharedConfig.imports
    ]
})
export class AppModule {
}

这是我的app.module.cleint.ts文件：

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { HttpModule,Http } from '@angular/http';
import { sharedConfig } from './app.module.shared';
import {
    TranslateModule,
    TranslateLoader,
    MissingTranslationHandler,
    MissingTranslationHandlerParams
} from '@ngx-translate/core';
import { TranslateHttpLoader } from '@ngx-translate/http-loader';
export function createTranslateLoader(http: Http) {
    return new TranslateHttpLoader(http, './assets/i18n/', '.json');
}

export class MyMissingTranslationHandler implements MissingTranslationHandler {
    handle(params: MissingTranslationHandlerParams) {
        return '[' + params.key + ']';
    }
}

@NgModule({
    bootstrap: sharedConfig.bootstrap,
    declarations: sharedConfig.declarations,
    imports: [
        BrowserModule,
        FormsModule,
        HttpModule,
        TranslateModule.forRoot({
            loader: {
                provide: TranslateLoader,
                useFactory: (createTranslateLoader),
                deps: [Http]
            }
        }),
        ...sharedConfig.imports
    ],
    providers: [
        { provide: 'ORIGIN_URL', useValue: location.origin },
        {
            provide: MissingTranslationHandler,
            useClass: MyMissingTranslationHandler
        }
    ]
})
export class AppModule {
}

这是我的app.module.shared.ts文件：

import { NgModule } from '@angular/core';
import { RouterModule } from '@angular/router';
import { HttpModule, Http } from "@angular/http";
import { BrowserModule } from "@angular/platform-browser";

import { TranslateModule} from '@ngx-translate/core';

import { AppComponent } from './components/app/app.component'
import { NavMenuComponent } from './components/navmenu/navmenu.component';
import { HomeComponent } from './components/home/home.component';
import { FetchDataComponent } from './components/fetchdata/fetchdata.component';
import { EmployeesListComponent } from './components/employees/EmployeesList.component';
import { CounterComponent } from './components/counter/counter.component';

export const sharedConfig: NgModule = {
    bootstrap: [AppComponent],
    declarations: [
        AppComponent,
        NavMenuComponent,
        CounterComponent,
        FetchDataComponent,
        EmployeesListComponent,
        HomeComponent
    ],
    imports: [
        RouterModule.forRoot([
            { path: '', redirectTo: 'home', pathMatch: 'full' },
            { path: 'home', component: HomeComponent },
            { path: 'counter', component: CounterComponent },
            { path: 'fetch-data', component: FetchDataComponent },
            { path: 'employees-list', component: EmployeesListComponent },
            { path: '**', redirectTo: 'home' }
        ]),
        BrowserModule,
        HttpModule,TranslateModule
    ]
    , exports: [
        TranslateModule
    ]
};

Answer 1

问题就在于此。 ./assets/i18n/en.json不是绝对的网址：http://foo.com/assets/i18n/en.json。我知道通常有一些方法可以表明您从与客户端代码相同的服务器提供服务。可能不是

export function createTranslateLoader(http: Http) {
    return new TranslateHttpLoader(http, '/assets/i18n/', '.json');
}

但是当我在角度文档回购中徘徊时：我看到了这一点：https://github.com/angular/angular/issues/15349。因此，有角度的http服务可能不支持调用服务于文档的主机。这有点令人惊讶，但您可以使用以下命令在javascript中获取：

window.location.origin

因此，只需在设置呼叫时将其添加到/ assets / i18n /。

通过服务器上的Http请求的URL必须是绝对的。网址：./ aassets / i18n / en.json

1 个答案: