Angular 4提供的参数与呼叫目标的任何签名不匹配

当我使用ng serve运行我的应用程序时，出现以下错误。但我可以看到参数，参数个数是正确的。Angular 4提供的参数与呼叫目标的任何签名不匹配

src/app/Services/customer.service.ts（27,20）：提供的参数不匹配调用目标的任何签名。

服务：

//With Observable 
    getCustomers(): Observable<Customer[]> { 
    console.log('getCountries Service call starting...'); 
    let apiURL = `${this.apiRoot}Customers/`; 
    return this.http.get(apiURL) 
     .map(res => 
     { 
     console.log('getCountries result: ' + res.text()); 
     return res.json().results.map(item => 
      { 
      return new Customer(
       item.CustomerID, 
       item.Username, 
       item.Password, 
       item.Email, 
       item.Firstname, 
       item.Lastname, 
       item.Address, 
       item.PostCode, 
       item.City, 
       item.OrderStatus, 
       item.FK_CountryID, 
       item.Country1, 
       item.Picture, 
       item.CreateDate 
      ); 
      } 
     ) 
     }) 
     .catch(error => { 
     console.log(error); 
     return Observable.throw(error.json()); 
     }); 
    }

型号：

export class Customer { 
    CustomerID:number 
    Username:string 
    Password:string 
    Email:string 
    Firstname:string 
    Lastname:string 
    Address:string 
    PostCode:string 
    City:string 
    OrderStatus:string 
    FK_CountryID:number 
    Country1:string 
    Picture:string 
    CreateDate:string 
    constructor(CustomerID:number,Username:string,Password:string,Email:string,Firstname:string, 
    Lastname:string, Address:string, PostCode:string, City:string, OrderStatus:string,FK_CountryID:number, 
    Country1:string, Picture:string, CreateDate:string){ 
     this.CustomerID = CustomerID 
     this.Username = Username 
     this.Password = Password 
     this.Email = Email 
     this.Firstname = Firstname 
     this.Lastname = Lastname 
     this.Address = Address 
     this.PostCode = PostCode 
     this.City = City 
     this.FK_CountryID = FK_CountryID 
     this.Country1 = Country1 
     this.Picture = Picture 
     this.CreateDate = CreateDate 
    } 
}

来源

2017-07-16 sa_

'.MAP（响应=> response.json（）}'将工作你为什么这样？因为 – Aravind

Customer类属性在服务器端不同，所以我需要一个与设置正确的属性上一个映射有角度的一面。 –

这很奇怪，我只是做了一个简单的变化，它的工作，我想Cli时不能正确地建立这样做的改变模型类再次构建CLI（我猜）。

所以我改变了这一点：

Country1:string, Picture:string, CreateDate:string){ 
     this.CustomerID = CustomerID

如下（我只按后{输入）：

Country1:string, Picture:string, CreateDate:string) 
{ 
    this.CustomerID = CustomerID

所以从字面上我没有做任何改变，但强制CLI再次transpile我认为。

我也回滚了这个改变，它再次正常工作。！？！

来源

2017-07-16 19:18:29

Angular 4提供的参数与呼叫目标的任何签名不匹配

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