angular - 将 Angular 项目部署到 CPanel 返回错误 Cors-Policy:请求源中不存在 Access-Control Allow-Origin Header
问题描述
这是我第一次在在线服务器上部署 Angular 应用程序。这不是企业的事情。在部署期间,我使用了这个命令
ng build --baseHref=https://www.exampleUrl.com/ --deployUrl=https://www.exampleUrl.com/
然后我把它上传到CPanel。
- 在最初的几分钟内,我可以在我的 PC 中看到我的网络,其绝对网址为“www.exampleUrl.com”,但移动设备无法访问该应用程序(idk 以查看移动设备中的控制台登录,因此我无法提供日志问题)。
- 一小时后,它返回此错误
Access to XMLHttpRequest at 'https://www.exampleUrl.com/ngx_pagespeed_beacon?url=https%3A%2F%2FexampleUrl.com%2F' from origin 'https://exampleUrl.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
其次是
www.exampleUrl.com/ngx_pagespeed_beacon?url=https%3A%2F%2FexampleUrl.com%2F:1 Failed to load resource: net::ERR_FAILED
我一直在这个论坛中浏览整个相关标签,但它们都不适合我。任何评论将不胜感激!
顺便说一句,这是我的 package.json 和 angular.json(也许你们需要观察这些)
{
"name": "myproject",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"watch": "ng build --watch --configuration development",
"test": "ng test"
},
"private": true,
"dependencies": {
"@angular/animations": "~12.1.1",
"@angular/cdk": "^12.2.0",
"@angular/common": "~12.1.1",
"@angular/compiler": "~12.1.1",
"@angular/core": "~12.1.1",
"@angular/forms": "~12.1.1",
"@angular/material": "^12.2.0",
"@angular/platform-browser": "~12.1.1",
"@angular/platform-browser-dynamic": "~12.1.1",
"@angular/router": "~12.1.1",
"bootstrap": "^4.5.3",
"ngx-bootstrap": "^7.0.0",
"rxjs": "~6.6.0",
"tslib": "^2.2.0",
"zone.js": "~0.11.4"
},
"devDependencies": {
"@angular-devkit/build-angular": "~12.1.1",
"@angular/cli": "~12.1.1",
"@angular/compiler-cli": "~12.1.1",
"@types/jasmine": "~3.6.0",
"@types/node": "^12.11.1",
"jasmine-core": "~3.7.0",
"karma": "~6.3.0",
"karma-chrome-launcher": "~3.1.0",
"karma-coverage": "~2.0.3",
"karma-jasmine": "~4.0.0",
"karma-jasmine-html-reporter": "^1.5.0",
"typescript": "~4.3.2"
}
}
角.json
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"cli": {
"analytics": "f6871353-1796-4510-ac5d-c072d98cf307"
},
"version": 1,
"newProjectRoot": "projects",
"projects": {
"myproject": {
"projectType": "application",
"schematics": {
"@schematics/angular:component": {
"style": "scss"
},
"@schematics/angular:application": {
"strict": true
}
},
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/myproject",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.app.json",
"inlineStyleLanguage": "scss",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.scss"
],
"scripts": []
},
"configurations": {
"production": {
"budgets": [
{
"type": "initial",
"maximumWarning": "500kb",
"maximumError": "1mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "2kb",
"maximumError": "4kb"
}
],
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"outputHashing": "all"
},
"development": {
"buildOptimizer": false,
"optimization": false,
"vendorChunk": true,
"extractLicenses": false,
"sourceMap": true,
"namedChunks": true
}
},
"defaultConfiguration": "production"
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"configurations": {
"production": {
"browserTarget": "myproject:build:production"
},
"development": {
"browserTarget": "myproject:build:development"
}
},
"defaultConfiguration": "development"
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "myproject: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",
"inlineStyleLanguage": "scss",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.scss"
],
"scripts": []
}
}
}
}
},
"defaultProject": "myproject"
}
解决方案
根据您使用的服务器,您需要允许请求源自的域向相关服务器发出请求。
要允许所有人,您将执行类似“Access-Control-Allow-Origin”“*”之类的操作
“*”选项允许来自所有域的请求,您也可以指定特定域。最好不要允许来自所有域的请求。
下面是我用 Java 编写并在 Jetty Server 上运行的一个旧项目的摘录。
return responseBuilder.header("Access-Control-Allow-Origin", "*").build();
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