我们最近将我们的服务器端渲染 Angular 11 应用分解为延迟加载模块，现在 SSR 不起作用。一些 URL 未正确路由并转到 404 全能，而其他 URL 似乎已正确路由但显示白页（空 <router-outlet> 内容）。启用 Javascript 后，内容会在客户端正确呈现，或者如果我导航到任何 Angular 路由器链接。
我在较早的教程中读到，曾经有一个用于@nguniversal 的延迟加载模块的模块映射，但 Angular 11 不需要。
这是我的路线的样子：
const routes: Routes = [
{
path: '',
redirectTo: 'start/',
pathMatch: 'full'
},
{
path: 'start',
loadChildren: () => import('../home/home.module').then(m => m.HomeModule)
},
{
path: 'blog',
loadChildren: () => import('../blog/blog.module').then(m => m.BlogModule)
},
{
path: 'ratgeber',
loadChildren: () => import('../guide/guide.module').then(m => m.GuideModule)
},
{
path: 'branchenbuch',
loadChildren: () => import('../vendors/vendors.module').then(m => m.VendorsModule)
},
{
path: 'galerien',
loadChildren: () => import('../gallery/gallery.module').then(m => m.GalleryModule)
},
{ path: '404/.', component: NotFoundComponent },
{ path: ':slug/.', component: StaticPageComponent },
{ path: '**', component: NotFoundComponent },
这是我在 server.ts
export function app(): express.Express {
const server = express()
const distFolder = join(process.cwd(), 'dist/hp24-frontend/browser')
const indexHtml = existsSync(join(distFolder, 'index.original.html')) ? 'index.original.html' : 'index'
// Our Universal express-engine (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
server.engine('html', ngExpressEngine({
bootstrap: AppServerModule,
}))
server.set('view engine', 'html')
server.set('views', distFolder)
// Example Express Rest API endpoints
// server.get('/api/**', (req, res) => { });
// Serve static files from /browser
server.get('*.*', express.static(distFolder, {
maxAge: '1y'
}))
// All regular routes use the Universal engine
server.get('*', (req, res) => {
const hostUrl = req.protocol + '://' + (req.get('X-Forwarded-Host') || req.get('Host'))
res.render(indexHtml, {
req,
providers: [
{ provide: APP_BASE_HREF, useValue: req.baseUrl },
{ provide: HOST_URL, useValue: hostUrl },
]
})
})
return server
}
这是我的angular.json。
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"hp24-frontend": {
"projectType": "application",
"schematics": {
"@schematics/angular:component": {
"style": "scss"
}
},
"root": "",
"sourceRoot": "src",
"prefix": "hp24",
"architect": {
"build": {
"builder": "@angular-builders/custom-webpack:browser",
"options": {
"customWebpackConfig": {
"path": "./webpack.config.js"
},
"outputPath": "dist/hp24-frontend/browser",
"index": "src/index.html",
"indexTransform": "index-html-transform.ts",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.app.json",
"aot": true,
"assets": [
"src/assets"
],
"styles": [
"src/styles/styles.scss"
],
"scripts": [],
"stylePreprocessorOptions": {
"includePaths": [
"src/styles"
]
}
},
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"budgets": [
{
"type": "initial",
"maximumWarning": "2mb",
"maximumError": "5mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "6kb",
"maximumError": "10kb"
}
]
}
}
},
"serve": {
"builder": "@angular-builders/custom-webpack:dev-server",
"options": {
"customWebpackConfig": {
"path": "./webpack.config.js"
},
"browserTarget": "hp24-frontend:build"
},
"configurations": {
"production": {
"browserTarget": "hp24-frontend:build:production"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "hp24-frontend:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.spec.json",
"karmaConfig": "karma.conf.js",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles/variables/_colors.scss",
"src/styles/styles.scss"
],
"scripts": []
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"tsconfig.app.json",
"tsconfig.spec.json",
"e2e/tsconfig.json",
"tsconfig.server.json"
],
"exclude": [
"**/node_modules/**"
]
}
},
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "hp24-frontend:serve"
},
"configurations": {
"production": {
"devServerTarget": "hp24-frontend:serve:production"
}
}
},
"server": {
"builder": "@angular-builders/custom-webpack:server",
"options": {
"customWebpackConfig": {
"path": "./webpack.config.js"
},
"outputPath": "dist/hp24-frontend/server",
"main": "server.ts",
"tsConfig": "tsconfig.server.json"
},
"configurations": {
"production": {
"outputHashing": "media",
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"sourceMap": false,
"optimization": true
}
}
},
"serve-ssr": {
"builder": "@nguniversal/builders:ssr-dev-server",
"options": {
"browserTarget": "hp24-frontend:build",
"serverTarget": "hp24-frontend:server"
},
"configurations": {
"production": {
"browserTarget": "hp24-frontend:build:production",
"serverTarget": "hp24-frontend:server:production"
}
}
},
"prerender": {
"builder": "@nguniversal/builders:prerender",
"options": {
"browserTarget": "hp24-frontend:build:production",
"serverTarget": "hp24-frontend:server:production",
"routes": [
"/"
]
},
"configurations": {
"production": {}
}
}
}
}},
"defaultProject": "hp24-frontend"
}
...这是我用于 postcss 和 tailwind 的自定义 webpack 文件。
const plugins = [
require('postcss-import'),
require('tailwindcss'),
require('autoprefixer'),
]
module.exports = {
module: {
rules: [
{
test: /\.scss$/,
loader: 'postcss-loader',
options: {
ident: 'postcss',
syntax: 'postcss-scss',
plugins: () => plugins
}
}
]
}
};
这是我的主服务器模块：
import { NgModule } from '@angular/core'
import { ServerModule, ServerTransferStateModule } from '@angular/platform-server'
import { AppModule } from './app.module'
import { AppComponent } from './app.component'
import { FlexLayoutServerModule } from '@angular/flex-layout/server'
import { SeoService } from './core/services/seo.service'
@NgModule({
imports: [
AppModule,
ServerModule,
ServerTransferStateModule,
FlexLayoutServerModule
],
providers: [SeoService],
bootstrap: [AppComponent],
})
export class AppServerModule {}
关于我在这里可能遗漏的任何提示？
我发现了问题。 @nguniversal 正在去除我的尾部斜杠，所以我不得不在我的 server.ts 条目中覆盖 Location.stripTrailingSlash 方法。