Angular 2.2.0注入從RC5遷移=>切換注入

Question

自從我將代碼從Angular 2 RC5遷移到2.2.0以來，我遇到了一個令人驚訝的問題。我注入到服務的其他服務一樣，：

constructor(_http:Http, 
      _cachingServices:CachingServices, 
      _globalServices:GlobalServices, 
      _dataServices:DataServices, 
      _notificationServices:NotificationServices) 

這是工作在RC5罰款，但現在，隨着2.2.0版本，注射混合！下面的代碼：

// Constructor 
    constructor(_http:Http, 
      _cachingServices:CachingServices, 
      _globalServices:GlobalServices, 
      _dataServices:DataServices, 
      _notificationServices:NotificationServices){ 

console.debug(this.className + " param globalServices => ",_globalServices); 
console.debug(this.className + " param cachingServices => ",_cachingServices); 
console.debug(this.className + " param dataServices => ",_dataServices); 
console.debug(this.className + " param notificationServices => ",_notificationServices); 

} 

給我下面的結果：

TranslateServices param globalServices => DataServices {connectionStrings: Object, mode: "dev", magicServices: MagicServices, apiURL: "http://127.0.0.1/api.php", baseURL: "http://localhost:3000"} 
    TranslateServices param cachingServices => CachingServices {expiration: EventEmitter, cacheduration: 400000} 
    TranslateServices param dataServices => NotificationServices {notification: EventEmitter, types: Object, notification_one_like_per_day: "notification_one_like_per_day", notification_one_message_per_day: "notification_one_message_per_day", notification_thanks_for_message: "notification_thanks_for_message"…} 
    TranslateServices param notificationServices => GlobalServices {mode: "dev", apiURL: "http://127.0.0.1/api.php", baseURL: "http://localhost:3000"} 

ERROR =>服務引用混合！ 我搜索了一段時間沒有任何開始的答案。

謝謝！ OMG！

Answer 1

OMG！多麼可疑的問題。我的解決方案有幾項服務。其中每個參考另一個服務，但沒有循環參考。

讓我們採取兩種服務： translate.services.ts

export class TranslateServices extends BaseServices { 

    // Constructor 
    constructor(_http:Http, 
       _globalServices:GlobalServices, 
       _cachingServices:CachingServices, 
       _dataServices:DataServices, 
       _notificationServices:NotificationServices, 
       _ipServices:IPServices, 
       _configurationServices:ConfigurationServices){ 
    } 
} 

和user.services.ts

export class UserServices extends BaseServices { 

    constructor(_http:Http, 
       _globalServices:GlobalServices, 
       _cachingServices:CachingServices, 
       _dataServices:DataServices, 
       _notificationServices:NotificationServices, 
       _ipServices:IPServices, 
       _cookieServices:CookieServices) { 
    } 
} 

我們可以看到，translate.services注入configuration.services and user.serv冰注入cookie.services。

在我的情況下，如果translate.services首先被初始化，以下命令：

console.debug("TranslateServices _configurationServices => ",_configurationServices); 
    console.debug("UserServices _cookieServices => ",_cookieServices); 

會給下面的輸出：

TranslateServices _configurationServices => ConfigurationServices 
UserServices _cookieServices => ConfigurationServices 

如果user.services首先初始化，相同的命令：

console.debug("TranslateServices _configurationServices => ",_configurationServices); 
    console.debug("UserServices _cookieServices => ",_cookieServices); 

將給出以下輸出：

TranslateServices _configurationServices => CookieServices 
UserServices _cookieServices => CookieServices 

的PARAMATERS _cookieServices和_configurationServices似乎有一個重要的，即使他們有兩種型動物服務的位置。

爲了處理這個問題，我已經在boths服務，給予相同的簽名：

export class TranslateServices extends BaseServices { 

    constructor(_http:Http, 
       _globalServices:GlobalServices, 
       _cachingServices:CachingServices, 
       _dataServices:DataServices, 
       _notificationServices:NotificationServices, 
       _ipServices:IPServices, 
       _configurationServices:ConfigurationServices 
       _cookieServices:CookieServices) { 
    } 
} 

export class UserServices extends BaseServices { 

    constructor(_http:Http, 
       _globalServices:GlobalServices, 
       _cachingServices:CachingServices, 
       _dataServices:DataServices, 
       _notificationServices:NotificationServices, 
       _ipServices:IPServices, 
       _configurationServices:ConfigurationServices 
       _cookieServices:CookieServices) { 
    } 
} 

這似乎不是一個正常的行爲。我努力尋找解釋的開始。希望這個錯誤能夠在一個合併版本中得到糾正。

如果有人能給我更多的解釋，我想。