Angular 2

Question

参考此处的教程：http://blog.thoughtram.io/angular/2016/06/22/model-driven-forms-in-angular-2.html

这就是我在我的应用程序中使用反应形式的方式：

   <div class="login">
<form [formGroup]="form" (ngSubmit)="dologin(form.value)">
    <div class="form-group">
        <label for="username">Username</label>
        <input id="username" type="text" class="form-control" name="username" formControlName="username">

        <div [hidden]="form.controls['username'].valid || form.controls['username'].pristine"
        class="alert alert-danger"> Username is required.</div>
    </div>
    <div class="form-group">
        <label for="password">Password</label>
        <input id="password" type="password" class="form-control" name="password" [formControl]="form.controls['password']">
        <div [hidden]="form.controls['password'].valid || form.controls['password'].pristine"
        class="alert alert-danger"> Password is required.</div>
    </div>
    <button type="submit" [disabled]="!form.valid" class="btn btn-primary">Login</button>
</form>
</div>


export class LoginComponent implements OnInit {
    form:FormGroup;
    errorMessage:string;
    public isUserAuthenticated = false;

    constructor(private router: Router,private authenticationService : AuthenticationService,private httpService:HttpService,private formBuilder:FormBuilder) {
        this.form=formBuilder.group({
            username:['',Validators.required],
            password:['',Validators.required]
        });

    }

但不知怎的，我收到编译错误如下：

  

未处理的Promise拒绝：模板解析错误：无法绑定到   'formGroup'，因为它不是'form'的已知属性。 （“] [formGroup] =”形式“   （ngSubmit）= “dologin（form.value）” ＆GT;                             ] [formControl] = “form.controls [ '密码']” ＆GT;            [错误 - ＆gt;]                             用户名           [错误 - ＆gt;]

     

“）：LoginComponent @ 4：8没有NgControl的提供者（”                  密码           [错误 - ＆gt;];任务：Promise.then;值：   错误：模板解析错误：（...）错误：模板解析错误：不能   绑定到'formGroup'，因为它不是'form'的已知属性。 （“
   ] [formGroup] = “形式”   （ngSubmit）= “dologin（form.value）” ＆GT;                             ] [formControl] = “form.controls [ '密码']” ＆GT;            [错误 - ＆gt;]                             用户名           [错误 - ＆gt;]

     

“）：LoginComponent @ 4：8没有NgControl的提供者（”                  密码           [错误 - ＆gt;] http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:17418:19）       在RuntimeCompiler._compileTemplate（http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:41756:51）       在http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:41678:83       at Set.forEach（native）       在编译时（http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:41678:47）       在ZoneDelegate.invoke（http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:96428:28）       在Zone.run（http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:96321:43）       在http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:96687:57       在ZoneDelegate.invokeTask（http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:96461:37）       在Zone.runTask（http://ws1066.intern.alpha-raid.com:9002/main.bundle.js:96361:47)consoleError @ zone.js：355_loop_1 @ zone.js：382drainMicroTaskQueue @ zone.js：386   zone.js：357错误：未捕获（在承诺中）：错误：模板解析   错误：（...）consoleError @ zone.js：357_loop_1 @   zone.js：382drainMicroTaskQueue @ zone.js：386

我搜索了NgControl提供商，在那里我看到我想要导入FORM_Directives但是在Angular2.1中他们没有提到任何关于Form指令的内容。

请帮我弄明白，我在这里缺少什么。

这是我的package.json

{
  "name": "raidar-frontend2",
  "version": "0.0.0",
  "license": "MIT",
  "angular-cli": {},
  "scripts": {
    "start": "ng serve --port 9002 --host ws1069.intern.alpha-raid.com",
    "lint": "tslint \"src/**/*.ts\"",
    "test": "ng test",
    "pree2e": "webdriver-manager update",
    "e2e": "protractor"
  },
  "private": true,
  "dependencies": {
    "@angular/common": "~2.0.0",
    "@angular/compiler": "~2.0.0",
    "@angular/core": "~2.0.0",
    "@angular/forms": "~2.0.0",
    "@angular/http": "~2.0.0",
    "@angular/material": "^2.0.0-alpha.9-3",
    "@angular/platform-browser": "~2.0.0",
    "@angular/platform-browser-dynamic": "~2.0.0",
    "@angular/router": "~3.0.0",
    "@ng-bootstrap/ng-bootstrap": "^1.0.0-alpha.9",
    "bootstrap": "^3.3.7",
    "core-js": "^2.4.1",
    "angular2-localstorage": "^0.4.0",
    "ng2-bootstrap": "^1.1.14",
    "rxjs": "5.0.0-beta.12",
    "ts-helpers": "^1.1.1",
    "zone.js": "^0.6.23"
  },
  "devDependencies": {
    "@types/jasmine": "^2.2.30",
    "@types/node": "^6.0.42",
    "angular-cli": "1.0.0-beta.17",
    "codelyzer": "~0.0.26",
    "jasmine-core": "2.4.1",
    "jasmine-spec-reporter": "2.5.0",
    "karma": "1.2.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-cli": "^1.0.1",
    "karma-jasmine": "^1.0.2",
    "karma-remap-istanbul": "^0.2.1",
    "protractor": "4.0.9",
    "ts-node": "1.2.1",
    "tslint": "3.13.0",
    "typescript": "2.0.2"
  }
}