在Angular项目中的angular.json文件中，可以为构建命名提供模板。可以使用[hash]来添加文件哈希值，以确保文件名的唯一性。

例如，如果将以下内容添加到angular.json文件中：

"projects": {
    "my-project": {
        "architect": {
            "build": {
                "options": {
                    "outputPath": "dist/my-project",
                    "index": "src/index.html",
                    "main": "src/main.ts",
                    "polyfills": "src/polyfills.ts",
                    "tsConfig": "tsconfig.app.json",
                    "assets": [
                        "src/favicon.ico",
                        "src/assets"
                    ],
                    "styles": [
                        "src/styles.css"
                    ],
                    "scripts": []
                },
                "configurations": {
                    "production": {
                        "outputHashing": "all",
                        "fileReplacements": [
                            {
                                "replace": "src/environments/environment.ts",
                                "with": "src/environments/environment.prod.ts"
                            }
                        ],
                        "sourceMap": false,
                        "extractCss": true,
                        "namedChunks": false,
                        "aot": true,
                        "extractLicenses": true,
                        "vendorChunk": false,
                        "buildOptimizer": true,
                        "fileNames": {
                            "index": "index.html",
                            "main": "main.[hash].js",
                            "polyfills": "polyfills.[hash].js",
                            "runtime": "runtime.[hash].js",
                            "styles": "styles.[hash].css",
                            "scripts": "[name].[hash].bundle.js"
                        }
                    }
                }
            }
        }
    }
}

在生产环境下构建项目时，文件名将包含哈希值，例如：main.456f3057b96d30ba676e.js。这保证了文件名的唯一性，从而避免了缓存问题。