在angular2 rc5項目中導入angular2-cookie

Question

我正在嘗試在剛開始的angular2 rc5項目中導入angular2 cookie模塊。

我用npm安裝了模塊

npm install angular2-cookie

編輯了我的angular-cli-build.js文件：

module.exports = function(defaults) {
  return new Angular2App(defaults, {
    vendorNpmFiles: [
     'systemjs/dist/system-polyfills.js',
     'systemjs/dist/system.src.js',
     'zone.js/dist/**/*.+(js|js.map)',
     'es6-shim/es6-shim.js',
     'reflect-metadata/**/*.+(ts|js|js.map)',
     'rxjs/**/*.+(js|js.map)',
     '@angular/**/*.+(js|js.map)',
     'materialize-css/bin/materialize.css',
     'materialize-css/bin/materialize.js',
     'socket.io-client/socket.io.js',
     'angular2-cookie/**/*.+(ts|js|js.map)'
   ]
 });
};

運行構建

在我的dist / vendor文件夾中創建了angular2-cookie文件夾

我的system-config.ts看起來像這樣

    "use strict";

      // SystemJS configuration file, see links for more information
      // https://github.com/systemjs/systemjs
      // https://github.com/systemjs/systemjs/blob/master/docs/config-api.md

      /***********************************************************************************************
       * User Configuration.
       **********************************************************************************************/
      /** Map relative paths to URLs. */
      const map: any = {
      };

      /** User packages configuration. */
      const packages: any = {
      };

      ////////////////////////////////////////////////////////////////////////////////////////////////
      /***********************************************************************************************
       * Everything underneath this line is managed by the CLI.
       **********************************************************************************************/
      const barrels: string[] = [
        // Angular specific barrels.
        '@angular/core',
        '@angular/common',
        '@angular/compiler',
        '@angular/forms',
        '@angular/http',
        '@angular/router',
        '@angular/platform-browser',
        '@angular/platform-browser-dynamic',

        // Thirdparty barrels.
        'rxjs',

        // App specific barrels.
        'app',
        'app/shared',
        /** @cli-barrel */
      ];

      const cliSystemConfigPackages: any = {};
      barrels.forEach((barrelName: string) => {
        cliSystemConfigPackages[barrelName] = { main: 'index' };
      });

      /** Type declaration for ambient System. */
      declare var System: any;

      // Apply the CLI SystemJS configuration.
      System.config({
        map: {
          '@angular': 'vendor/@angular',
          'rxjs': 'vendor/rxjs',
          'main': 'main.js',
          "socket.io-client": "node_modules/socket.io-client/socket.io.js",
          "angular2-cookie": 'vendor/angular2-cookie'
        },
        packages: cliSystemConfigPackages,
        "socket.io-client": {"defaultExtension": "js"},
      'angular2-cookie' : { defaultExtension: 'js',main: 'core.js'}
      });

      // Apply the user's configuration.
      System.config({ map, packages });

我設法將其導入並在組件文件中添加了一些代碼

import {CookieService} from 'angular2-cookie/core';

但是由於某些原因，當我嘗試ng服務該應用程序時，它無法加載並出現以下錯誤

             zone.js:101 GET http://localhost:4200/vendor/angular2-cookie/core 404 (Not Found)scheduleTask @ zone.js:101ZoneDelegate.scheduleTask @ zone.js:336Zone.scheduleMacroTask @ zone.js:273(anonymous function) @ zone.js:122send @ VM308:3fetchTextFromURL @ system.src.js:1154(anonymous function) @ system.src.js:1735ZoneAwarePromise @ zone.js:584(anonymous function) @ system.src.js:1734(anonymous function) @ system.src.js:2759(anonymous function) @ system.src.js:3333(anonymous function) @ system.src.js:3600(anonymous function) @ system.src.js:3985(anonymous function) @ system.src.js:4448(anonymous function) @ system.src.js:4700(anonymous function) @ system.src.js:406ZoneDelegate.invoke @ zone.js:323Zone.run @ zone.js:216(anonymous function) @ zone.js:571ZoneDelegate.invokeTask @ zone.js:356Zone.runTask @ zone.js:256drainMicroTaskQueue @ zone.js:474ZoneTask.invoke @ zone.js:426
            2016-09-01 10:48:02.373 zone.js:461 Unhandled Promise rejection: Error: XHR error (404 Not Found) loading http://localhost:4200/vendor/angular2-cookie/core
                    at XMLHttpRequest.wrapFn [as _onreadystatechange] (http://localhost:4200/vendor/zone.js/dist/zone.js:769:30)
                    at ZoneDelegate.invokeTask (http://localhost:4200/vendor/zone.js/dist/zone.js:356:38)
                    at Zone.runTask (http://localhost:4200/vendor/zone.js/dist/zone.js:256:48)
                    at XMLHttpRequest.ZoneTask.invoke (http://localhost:4200/vendor/zone.js/dist/zone.js:423:34)
                Error loading http://localhost:4200/vendor/angular2-cookie/core as "angular2-cookie/core" from http://localhost:4200/app/app.component.js ; Zone: <root> ; Task: Promise.then ; Value: Error: Error: XHR error (404 Not Found) loading http://localhost:4200/vendor/angular2-cookie/core(…)consoleError @ zone.js:461_loop_1 @ zone.js:490drainMicroTaskQueue @ zone.js:494ZoneTask.invoke @ zone.js:426
            2016-09-01 10:48:02.378 zone.js:463 Error: Uncaught (in promise): Error: Error: XHR error (404 Not Found) loading http://localhost:4200/vendor/angular2-cookie/core(…)

看來angular2 cookie文件夾不可訪問（或無法正確提供），但找不到原因。

我的package.json依賴項：

                "dependencies": {
                        "@angular/common": "2.0.0-rc.5",
                        "@angular/compiler": "2.0.0-rc.5",
                        "@angular/core": "2.0.0-rc.5",
                        "@angular/forms": "0.3.0",
                        "@angular/http": "2.0.0-rc.5",
                        "@angular/platform-browser": "2.0.0-rc.5",
                        "@angular/platform-browser-dynamic": "2.0.0-rc.5",
                        "@angular/router": "3.0.0-rc.1",
                        "angular2-cookie": "^1.2.2",
                        "async": "^2.0.1",
                        "clone": "^1.0.2",
                        "es6-shim": "0.35.1",
                        "express": "^4.14.0",
                        "materialize-css": "^0.97.7",
                        "moment": "^2.14.1",
                        "redis": "^2.6.2",
                        "reflect-metadata": "0.1.3",
                        "rethinkdb": "^2.3.2",
                        "rxjs": "^5.0.0-beta.6",
                        "socket.io": "^1.4.8",
                        "socket.io-client": "^1.4.8",
                        "systemjs": "0.19.37",
                        "typings": "^1.3.1",
                        "zone.js": "0.6.17"
                        },
                        "devDependencies": {
                        "angular-cli": "1.0.0-beta.10",
                        "codelyzer": "0.0.20",
                        "ember-cli-inject-live-reload": "1.4.0",
                        "jasmine-core": "2.4.1",
                        "jasmine-spec-reporter": "2.5.0",
                        "karma": "0.13.22",
                        "karma-chrome-launcher": "0.2.3",
                        "karma-jasmine": "0.3.8",
                        "protractor": "3.3.0",
                        "ts-node": "0.5.5",
                        "tslint": "3.11.0",
                        "typescript": "1.8.10",
                        "typings": "1.3.1"
                        }
                    }

Answer 1

您需要在這些對象中設置地圖和數據包。 請勿在這些行下方修改任何內容。

/** Map relative paths to URLs. */
const map: any = {
  'angular2-cookie': 'vendor/angular2-cookie'
};

/** User packages configuration. */
const packages: any = {
  'angular2-cookie': {main: 'core.js', defaultExtension: 'js'},
};

請注意，目前angular2-cookie不適用於angular2-cookie ，但是新版本正在開發中。 我認為它將在今天或明天發布。

Answer 2

您確實在配置文件"angular2-cookie": 'vendor/angular2-cookie'映射了"angular2-cookie": 'vendor/angular2-cookie' ，因此您需要import {CookieService} from 'angular2-cookie';調用import {CookieService} from 'angular2-cookie';

應該可以，否則請檢查此文件夾/vendor/angular2-cookie/ ，並檢查是否在System.config'angular2 'angular2-cookie' : { defaultExtension: 'js',main: 'core.js'}將此模塊設置為默認的core.js文件'angular2-cookie' : { defaultExtension: 'js',main: 'core.js'} 。