我正在用Angular 11开发一个Angular应用。应用程序在http://localhost:4200中以开发模式运行。后端应用程序位于使用url为https://localhost:8447的Zuul 2.2配置的网关后面。当请求登录页面(或任何其他页面)时，我看到一些对wss://localhost:8447的请求被拒绝，并且在浏览器中出现此错误:
WebSocket connection to 'wss://localhost:8447/ui/sockjs-node/197/jxkw5ek0/websocket' failed: Error during WebSocket handshake: Unexpected response code: 400
我猜Angular是在尝试对4200端口的Node服务器进行热模式重载。
我在package.json中做了这个修改
"start": "ng serve --base-href /ui/ --public-host http://localhost:4200/sockjs-node"
但是在这种情况下，浏览器会出现以下错误:
zone-evergreen.js:2845 GET https://localhost:4200/ui/sockjs-node/info?t=1611158080859 net::ERR_SSL_PROTOCOL_ERROR
URLhttps://localhost:4200不正确，因为Angular部署在一个非安全端口
有什么问题吗?这是由于Webpack或Angular中的错误吗?
package.json
{
"name": "xxxx",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve --base-href /ui/",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/animations": "~11.0.5",
"@angular/common": "~11.0.5",
"@angular/compiler": "~11.0.5",
"@angular/core": "~11.0.5",
"@angular/forms": "~11.0.5",
"@angular/platform-browser": "~11.0.5",
"@angular/platform-browser-dynamic": "~11.0.5",
"@angular/router": "~11.0.5",
"rxjs": "~6.6.0",
"tslib": "^2.0.0",
"zone.js": "~0.10.2"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.1100.5",
"@angular/cli": "~11.0.5",
"@angular/compiler-cli": "~11.0.5",
"@types/jasmine": "~3.6.0",
"@types/node": "^12.11.1",
"codelyzer": "^6.0.0",
"jasmine-core": "~3.6.0",
"jasmine-spec-reporter": "~5.0.0",
"karma": "~5.1.0",
"karma-chrome-launcher": "~3.1.0",
"karma-coverage": "~2.0.3",
"karma-jasmine": "~4.0.0",
"karma-jasmine-html-reporter": "^1.5.0",
"protractor": "~7.0.0",
"ts-node": "~8.3.0",
"tslint": "~6.1.0",
"typescript": "~4.0.2"
}
}
angular.json
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"otaplatform-ui": {
"projectType": "application",
"schematics": {},
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/xxxxxxx",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.app.json",
"aot": true,
"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,
"namedChunks": false,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"budgets": [
{
"type": "initial",
"maximumWarning": "2mb",
"maximumError": "5mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "6kb",
"maximumError": "10kb"
}
]
}
}
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "xxxxxxxxxxx:build"
},
"configurations": {
"production": {
"browserTarget": "xxxxxxxxxxx:build:production"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "xxxxxxxxxxx: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.css"
],
"scripts": []
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"tsconfig.app.json",
"tsconfig.spec.json",
"e2e/tsconfig.json"
],
"exclude": [
"**/node_modules/**"
]
}
},
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "xxxxxxxxxxx:serve"
},
"configurations": {
"production": {
"devServerTarget": "xxxxxxxxxxx:serve:production"
}
}
}
}
}
},
"defaultProject": "xxxxxxxxxxx"
}
最后我决定使用——ssl标志
"start": "ng serve --base-href /ui/ --ssl --ssl-key ssl/localhost.key --ssl-cert ssl/localhost.crt --public-host localhost:4200"
，并在Zuul中重定向到https://localhost:4200来解决问题。
这不是最好的解决方案，但它有效。也许这个问题是由于Angular 11版本，我没有检查它