我已经在我的Web应用程序中实现了通用角度。它工作正常，但我注意到的是服务器未返回所请求页面的动态HTML。即如果我转到我的应用程序中的浏览页面。它通过http.get获取数据，然后将数据填充到HTML中。目前，我正在从服务器获取HTML，这是在调用之前获得的。当我查看页面源代码时，它不包含我提取的数据。
我也看过了这个人的tutorial，但它有angular-cli.json，在我的项目中我有angluar.json，它们的结构不同。
问题应该是服务器不等到数据被提取并填充到相应的HTML中。当前，它返回的静态HTML不足以实现SEO。
server.ts
// These are important and needed before anything else
import 'zone.js/dist/zone-node';
import 'reflect-metadata';
import { enableProdMode } from '@angular/core';
import 'localstorage-polyfill';
import * as express from 'express';
import { join } from 'path';
// Faster server renders w/ Prod mode (dev mode never needed)
enableProdMode();
// Express server
const app = express();
const PORT = process.env.PORT || 4000;
const DIST_FOLDER = join(process.cwd(), 'dist');
const domino = require("domino");
const fs = require("fs");
const path = require("path");
const templateA = fs
.readFileSync(path.join("dist/browser", "index.html"))
.toString();
const win = domino.createWindow(templateA);
win.Object = Object;
win.Math = Math;
global["window"] = win;
global["document"] = win.document;
global["branch"] = null;
global["object"] = win.object;
global['HTMLElement'] = win.HTMLElement;
global['navigator'] = win.navigator;
global['localStorage'] = localStorage;
// * NOTE :: leave this as require() since this file is built Dynamically from webpack
const { AppServerModuleNgFactory, LAZY_MODULE_MAP } = require('./dist/server/main');
// Express Engine
import { ngExpressEngine } from '@nguniversal/express-engine';
// Import module map for lazy loading
import { provideModuleMap } from '@nguniversal/module-map-ngfactory-loader';
app.engine('html', ngExpressEngine({
bootstrap: AppServerModuleNgFactory,
providers: [
provideModuleMap(LAZY_MODULE_MAP)
]
}));
app.set('view engine', 'html');
app.set('views', join(DIST_FOLDER, 'browser'));
// TODO: implement data requests securely
app.get('/api/*', (req, res) => {
res.status(404).send('data requests are not supported');
});
// Server static files from /browser
app.get('*.*', express.static(join(DIST_FOLDER, 'browser')));
// All regular routes use the Universal engine
app.get('*', (req, res) => {
res.render('index', { req });
});
// Start up the Node server
app.listen(PORT, () => {
console.log(`Node server listening on http://localhost:${PORT}`);
});
webpack.server.config.js
const path = require('path');
const webpack = require('webpack');
module.exports = {
entry: { server: './server.ts' },
resolve: { extensions: ['.js', '.ts'] },
target: 'node',
mode: 'none',
// this makes sure we include node_modules and other 3rd party libraries
externals: [/node_modules/],
output: {
path: path.join(__dirname, 'dist'),
filename: '[name].js'
},
module: {
rules: [{ test: /\.ts$/, loader: 'ts-loader' }]
},
plugins: [
// Temporary Fix for issue: https://github.com/angular/angular/issues/11580
// for 'WARNING Critical dependency: the request of a dependency is an expression'
new webpack.ContextReplacementPlugin(
/(.+)?angular(\\|\/)core(.+)?/,
path.join(__dirname, 'src'), // location of your src
{} // a map of your routes
),
new webpack.ContextReplacementPlugin(
/(.+)?express(\\|\/)(.+)?/,
path.join(__dirname, 'src'),
{}
)
]
};
angular.json
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"repicture-app-pure-cli": {
"root": "",
"sourceRoot": "src",
"projectType": "application",
"prefix": "app",
"schematics": {},
"architect": {
"server": {
"builder": "@angular-devkit/build-angular:server",
"options": {
"outputPath": "dist/server",
"main": "src/main.server.ts",
"tsConfig": "src/tsconfig.server.json"
}
},
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/browser",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.app.json",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.css"
],
"scripts": []
},
"configurations": {
"production": {
"fileReplacements": [{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"aot": true,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true
}
}
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "repicture-app-pure-cli:build"
},
"configurations": {
"production": {
"browserTarget": "repicture-app-pure-cli:build:production"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "repicture-app-pure-cli:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.spec.json",
"karmaConfig": "src/karma.conf.js",
"styles": [
"src/styles.css"
],
"scripts": [],
"assets": [
"src/favicon.ico",
"src/assets"
]
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"src/tsconfig.app.json",
"src/tsconfig.spec.json"
],
"exclude": [
"**/node_modules/**"
]
}
}
}
},
"repicture-app-pure-cli-e2e": {
"root": "e2e/",
"projectType": "application",
"architect": {
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "repicture-app-pure-cli:serve"
},
"configurations": {
"production": {
"devServerTarget": "repicture-app-pure-cli:serve:production"
}
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": "e2e/tsconfig.e2e.json",
"exclude": [
"**/node_modules/**"
]
}
}
}
}
},
"defaultProject": "repicture-app-pure-cli"
}
app.server.module.ts
import { NgModule } from '@angular/core';
import { ServerModule, ServerTransferStateModule } from '@angular/platform-server';
import { ModuleMapLoaderModule } from '@nguniversal/module-map-ngfactory-loader';
import { AppModule } from './app.module';
import { AppComponent } from './app.component';
@NgModule({
imports: [
AppModule,
ServerModule,
ModuleMapLoaderModule,
ServerTransferStateModule
],
bootstrap: [ AppComponent ],
})
export class AppServerModule {}
app.module.ts
imports: [
BrowserModule.withServerTransition({ appId: 'repicture-app-pure-cli' })
.
.
.
]
tsconfig.server.json
{
"extends": "../tsconfig.json",
"compilerOptions": {
"outDir": "../out-tsc/app",
"baseUrl": "./",
"module": "commonjs",
"types": []
},
"exclude": [
"test.ts",
"**/*.spec.ts"
],
"angularCompilerOptions": {
"entryModule": "app/app.server.module#AppServerModule"
}
}
package.json
{
"name": "repicture-app-pure-cli",
"version": "0.0.0",
"license": "MIT",
"scripts": {
"ng": "ng",
"start": "ng serve",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e",
"build:ssr": "npm run build:client-and-server-bundles && npm run webpack:server",
"serve:ssr": "node dist/server",
"build:client-and-server-bundles": "ng build --prod && ng run repicture-app-pure-cli:server",
"webpack:server": "webpack --config webpack.server.config.js --progress --colors"
},
"private": true,
"dependencies": {
"@angular/animations": "^6.0.3",
"@angular/common": "^6.0.3",
"@angular/compiler": "^6.0.3",
"@angular/core": "^6.0.3",
"@angular/forms": "^6.0.3",
"@angular/http": "^6.0.3",
"@angular/platform-browser": "^6.0.3",
"@angular/platform-browser-dynamic": "^6.0.3",
"@angular/platform-server": "^7.1.1",
"@angular/router": "^6.0.3",
"@fortawesome/angular-fontawesome": "^0.1.1",
"@fortawesome/fontawesome-svg-core": "^1.2.2",
"@fortawesome/free-brands-svg-icons": "^5.2.0",
"@fortawesome/free-solid-svg-icons": "^5.2.0",
"@ngui/auto-complete": "^2.0.0",
"@nguniversal/express-engine": "^7.0.2",
"@nguniversal/module-map-ngfactory-loader": "^7.0.2",
"@ngx-share/button": "^6.0.1",
"@ngx-share/core": "^6.0.1",
"@types/jquery": "^3.3.4",
"@types/lodash": "^4.14.111",
"angular-2-dropdown-multiselect": "1.6.3",
"angular2-cookie": "^1.2.6",
"angular2-notification-bar": "^1.2.5",
"classlist.js": "^1.1.20150312",
"core-js": "^2.5.4",
"file-droppa": "^1.8.0",
"jquery": "^3.3.1",
"ng2-alert-center": "^0.5.1",
"ng2-auto-complete": "^0.12.0",
"ng2-bootstrap": "^1.6.3",
"ng2-file-upload": "^1.3.0",
"ng2-img-cropper": "^0.9.0",
"ng2-scrollable": "^0.8.0",
"ng2-social-share": "0.0.10",
"ngx-bootstrap": "^3.0.1",
"ngx-image-viewer": "^1.0.10",
"ngx-notification-bar": "^0.1.4",
"ngx-popover": "0.0.16",
"ngx-progressbar": "^2.1.1",
"ngx-scroll-event": "^1.0.8",
"ngx-tooltip": "0.0.9",
"rxjs": "^6.0.0",
"rxjs-compat": "^6.2.1",
"ts-loader": "^5.3.1",
"zone.js": "^0.8.26"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.6.8",
"@angular/cli": "~6.0.8",
"@angular/compiler-cli": "^6.0.3",
"@angular/language-service": "^6.0.3",
"@types/jasmine": "~2.8.6",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~8.9.4",
"codelyzer": "~4.2.1",
"express": "^4.16.3",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~1.7.1",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.0",
"karma-jasmine": "~1.1.1",
"karma-jasmine-html-reporter": "^0.2.2",
"localstorage-polyfill": "^1.0.1",
"lodash": "^4.17.10",
"mz": "^2.7.0",
"npm-run-all": "^4.1.3",
"protractor": "~5.3.0",
"puppeteer": "^1.7.0",
"ts-node": "~5.0.1",
"tslint": "~5.9.1",
"typescript": "~2.7.2",
"webpack-cli": "^3.1.2"
}
}
调用功能
getList(url) {
this.service.getList(url).subscribe(result => {
...});
我的服务：service.ts
getList(url) {
return this.httpClient.get(url); //got suggestion to use httpClient to make it wait and load data into HTML and then return HTML
}
生成和运行的命令如下：
npm run build:ssr && npm run server:ssr