Angular 6构建失败，无法加载资源。

Question

我尝试使用命令ng build --prod构建我的应用程序，但是当我尝试在dist文件夹中加载index.html文件时，我会收到以下错误：

styles.76a1111….css:1 Failed to load resource: the server responded with a status of 404 (Not Found)
runtime.06daa30….js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
polyfills.f6ae3e8….js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
scripts.f11023c….js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
main.4ee5dbf….js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
styles.76a1111….css:1 Failed to load resource: the server responded with a status of 404 (Not Found)

在 index.html 文件中，我有以下内容：

<base href="/">

angular.json file

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "digital": {
      "root": "",
      "sourceRoot": "src",
      "projectType": "application",
      "prefix": "app",
      "schematics": {},
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/digital",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.app.json",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "./node_modules/ngx-bootstrap/datepicker/bs-datepicker.css",
              "./node_modules/@angular/material/prebuilt-themes/indigo-pink.css",
              "./node_modules/bootstrap/dist/css/bootstrap.css",
              "src/styles.scss"
            ],
            "scripts": [
              "./node_modules/jquery/dist/jquery.js",
              "./node_modules/bootstrap/dist/js/bootstrap.bundle.js"
            ]
          },
          "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": "digital:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "digital:build:production"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "digital: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": [
              "./node_modules/bootstrap/dist/css/bootstrap.min.css",
              "./node_modules/ngx-bootstrap/datepicker/bs-datepicker.css",
              "./node_modules/@angular/material/prebuilt-themes/indigo-pink.css",
              "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/**"
            ]
          }
        }
      }
    },
    "wedigital-e2e": {
      "root": "e2e/",
      "projectType": "application",
      "architect": {
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "digital:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "digital:serve:production"
            }
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": "e2e/tsconfig.e2e.json",
            "exclude": [
              "**/node_modules/**"
            ]
          }
        }
      }
    }
  },
  "defaultProject": "digital",
  "schematics": {
    "@schematics/angular:component": {
      "styleext": "scss"
    }
  }
}

其他信息：

Angular CLI: 6.2.7
Node: 8.10.0
OS: darwin x64
Angular: 6.1.10

dist 文件夹中的文件。

3rdpartylicenses.txt
assets
favicon.ico
index.html
main.4ee5dbfc414143867b55.js
polyfills.f6ae3e8b63939c618130.js
runtime.06daa30a2963fa413676.js
scripts.f11023cbae55e24a4eeb.js
styles.76a1111b5a6844e3fc2b.css

- rob

---

ng build --prod --verbose 的输出是什么？ - billyjov

以上命令输出和错误相同。 - rob

你在 dist 文件夹中有哪些文件？并且你是否编辑了 index.html 的内容？ - billyjov

请确保详细输出冗长的信息。尝试使用“--progress”标志逐步显示出错的步骤，并查看其中的细节。 - billyjov

即使执行 ng build --prod --verbose，输出的文件夹与上述相同。 - rob

Answer 1

您需要将 <base href="/"> 更改为 <base href="./">

- Masre

---

或者直接删除它，因为那是隐式的“base”。 - Toby Speight

谢谢，伙计。这是正确的答案，应该用绿色的勾标记为正确！ - Jmainol

Answer 2

您不能直接从 dist 文件夹中打开 index.html。您需要使用某种反向代理服务器。

您可以使用 Nginx。

修改并添加以下配置到您的 nginx.conf 文件中：

location /angular {
   alias "C:\\<Your Project Location>\\dist";   
   index index.html index.htm;
   try_files $uri $uri/ /index.html =404;
}

然后你可以这样访问项目 dist 文件：
http://localhost/angular

这样你的错误也会得到解决。

假设你的 angular.json 文件已经正确定义了 baseHref 和 deployUrl。
举个例子：

{
  ...
  "projects": {
    "<Your project>": {
      ...
      "architect": {
        "build": {
          ...
          "options": {
            "baseHref": "/angular/",
            "deployUrl": "/angular/",
            ...
          }
        }
      }
    }
  }
}

- Saddam Pojee

Answer 3

请尝试以下指令：

1. 使用 AppModule 进行路由配置

   RouterModule.forRoot(appRoutes, { useHash: true })

2. 从 index.html 中删除基本 URL，并在 AppModule 中动态添加

   import { APP_BASE_HREF } from '@angular/common'; providers: [{ provide: APP_BASE_HREF, useValue: '/' }],

- Dinesh Kumar

---

这里出现了10个错误：GET http://localhost:4200/policy/runtime.js net::ERR_ABORTED 404 (未找到)。 - rob

你从 index.html 中移除了 <base href="/"> 吗？ - Dinesh Kumar

是的，我确实做了那件事。 - rob