我创建了一个角度通用的应用程序与angular2我要求/类别服务。
this.hsService.getCategories(AppConstants.BASE_URL_GET_CATGORIES).subscribe(
resp => {
if (resp !== null) {
console.log('response is not null');
}else {
console.log('response is null');
}
},
err => {
console.log('error');
that.categories = that.Categories();
}
);
但我错误地得到了这个错误。但是不明白为什么?
错误错误:服务器上通过Http请求的URL必须是绝对的。 URL:/,类别在validateRequestUrl(D:\ Myprojects \ angular universal \ ciel \ node_modules \ @angular \ platform-server \ bundles \ platform-server.umd.js:99:15 at new ZoneMacroTaskConnection(D:\ Myprojects \ angular universal) \ ciel \ node_modules \ @angular \ platform-server \ bundles \ platform-server.umd.js:226:9)在ZoneMacroTaskBackend.createConnection(D:\ Myprojects \ angular universal \ ciel \ node_modules \ @angular \ platform-server \在http://in :. (D:\ Myprojects \ angular universal \ ciel \ node_modules \ @angular \ http \ bundles \ http.umd.js:1943:34)在Http.get(D:\ Myprojects \ angular universal \ ciel \ node_modules \ @angular \在n.XV61.n的n.getCategories(D:\ Myprojects \ angular universal \ ciel \ dist-server \ main.bundle.js:1:26301)的http \ bundles \ http.umd.js:1957:21)在n.XV61.n.ngOnInit(D:\ Myproj)的getCategories(D:\ Myprojects \ angular universal \ ciel \ dist-server \ main.bundle.js:1:24428) ects \ angular universal \ ciel \ dist-server \ main.bundle.js:1:24346)checkAndUpdateDirectiveInline(D:\ Myprojects \ angular universal \ ciel \ node_modules \ @angular \ core \ bundles \ core.umd.js:10875 :19)
有谁能够帮我?
错误错误:服务器上通过Http请求的URL必须是绝对的。
看起来像AppConstants.BASE_URL_GET_CATGORIES
是undefined
或无效的http
URL。
我认为你需要注入原始URL来创建绝对路径
export function createTranslateLoader(http: Http, @Inject('AppConstants.BASE_URL_GET_CATGORIES') originUrl: string) {
return new TranslateHttpLoader(http, originUrl);
}
在服务器端呈现中,任何HTTP调用都需要绝对URL。
你也可以
在this问题的答案中,有多种解决方法可以做选项2。
我个人建议配置一个注入令牌,它为您提供服务器的源,并使用HTTP拦截器将其添加到基本URL:
添加HTTP拦截器类:
import { Injectable, Inject, Optional } from '@angular/core';
import { HttpInterceptor, HttpHandler, HttpRequest } from '@angular/common/http';
@Injectable()
export class UniversalInterceptor implements HttpInterceptor {
constructor(@Optional() @Inject('serverUrl') protected serverUrl: string) {}
intercept(req: HttpRequest<any>, next: HttpHandler) {
const serverReq = !this.serverUrl ? req : req.clone({
url: `${this.serverUrl}${req.url}`
});
return next.handle(serverReq);
}
}
将其添加到服务器端模块的providers数组:
providers: [
{
provide: HTTP_INTERCEPTORS,
useClass: UniversalInterceptor,
multi: true
}
在服务器端配置中(在此示例中表示),为令牌提供服务器的原始URL:
let protocol = 'http';
if (process.env.NODE_ENV == 'production') {
protocol = 'https'
}
app.engine('html', (_, options, callback) => {
let engine = ngExpressEngine({
bootstrap: AppServerModuleNgFactory,
providers: [
provideModuleMap(LAZY_MODULE_MAP),
{
provide: 'serverUrl',
useValue: `${protocol}://${options.req.get('host')}`
}
]
});
engine(_, options, callback)
})