錯誤：錯誤XHR（404未找到）裝載.... @角/ HTTP（...）

Question

我遇到了問題，當我試圖來引導HTTP_PROVIDERS在main.ts文件和實際的錯誤是：

Error: XHR error (404 Not Found) loading http://localhost:3000/node_modules/@angular/Http(…) 

沒有引導HTTP_PROVIDERS，我沒有任何問題來啓動應用程序。這裏是我的應用程序的信息。

您是否看到我使用HTTP_PROVIDERS的方式有問題？

這裏是package.json

{ 
    "name": "angular2-quickstart", 
    "version": "1.0.0", 
    "scripts": { 
    "start": "tsc && concurrently \"npm run tsc:w\" \"npm run lite\" ", 
    "lite": "lite-server", 
    "postinstall": "typings install", 
    "tsc": "tsc", 
    "tsc:w": "tsc -w", 
    "typings": "typings" 
    }, 
    "license": "ISC", 
    "dependencies": { 
    "@angular/common": "2.0.0-rc.1", 
    "@angular/compiler": "2.0.0-rc.1", 
    "@angular/core": "2.0.0-rc.1", 
    "@angular/http": "2.0.0-rc.1", 
    "@angular/platform-browser": "2.0.0-rc.1", 
    "@angular/platform-browser-dynamic": "2.0.0-rc.1", 
    "@angular/router": "2.0.0-rc.1", 
    "@angular/router-deprecated": "2.0.0-rc.1", 
    "@angular/upgrade": "2.0.0-rc.1", 

    "systemjs": "0.19.27", 
    "es6-shim": "^0.35.0", 
    "reflect-metadata": "^0.1.3", 
    "rxjs": "5.0.0-beta.6", 
    "zone.js": "^0.6.12", 

    "angular2-in-memory-web-api": "0.0.7", 
    "bootstrap": "^3.3.6" 
    }, 
    "devDependencies": { 
    "concurrently": "^2.0.0", 
    "lite-server": "^2.2.0", 
    "typescript": "^1.8.10", 
    "typings":"^0.8.1" 
    } 
} 

這裏是system.config.js

(function(global) { 

    // map tells the System loader where to look for things 
    var map = { 
    'app':      'app', // 'dist', 
    'rxjs':      'node_modules/rxjs', 
    'angular2-in-memory-web-api': 'node_modules/angular2-in-memory-web-api', 
    '@angular':     'node_modules/@angular' 
    }; 

    // packages tells the System loader how to load when no filename and/or no extension 
    var packages = { 
    'app':      { main: 'main.js', defaultExtension: 'js' }, 
    'rxjs':      { defaultExtension: 'js' }, 
    'angular2-in-memory-web-api': { defaultExtension: 'js' }, 
    }; 

    var packageNames = [ 
    '@angular/common', 
    '@angular/compiler', 
    '@angular/core', 
    '@angular/http', 
    '@angular/platform-browser', 
    '@angular/platform-browser-dynamic', 
    '@angular/router', 
    '@angular/router-deprecated', 
    '@angular/testing', 
    '@angular/upgrade', 
    ]; 

    // add package entries for angular packages in the form '@angular/common': { main: 'index.js', defaultExtension: 'js' } 
    packageNames.forEach(function(pkgName) { 
    packages[pkgName] = { main: 'index.js', defaultExtension: 'js' }; 
    }); 

    var config = { 
    map: map, 
    packages: packages 
    } 

    // filterSystemConfig - index.html's chance to modify config before we register it. 
    if (global.filterSystemConfig) { global.filterSystemConfig(config); } 

    System.config(config); 

})(this); 

這裏是tsconfig.json

{ 
    "compilerOptions": { 
    "target": "es5", 
    "module": "commonjs", 
    "moduleResolution": "node", 
    "sourceMap": true, 
    "emitDecoratorMetadata": true, 
    "experimentalDecorators": true, 
    "removeComments": false, 
    "noImplicitAny": false 
    }, 
    "exclude": [ 
    "node_modules", 
    "typings/main", 
    "typings/main.d.ts" 
    ] 
} 

Answer 1

我認爲你輸入以下內容：

import { ... } from '@angular/Http'; 

代替

import { ... } from '@angular/http'; 

http必須爲小寫。 Http對應於@angular/http模塊中執行HTTP請求的類。