使用Angular 5 +从ASP.NET Core 2.0 Web API中消耗数据时遇到问题。
这是我所做的步骤:
现在问题: 我可以从前端应用程序向wep api发出请求,我也在接收JSON格式的正确数据。 但是,当生成的客户端服务类中的poco对象的映射过程时,某些东西不起作用。我总是得到一个空属性的对象。
这是我的代码:
product.service.ts
export class ProductService {
private http: { fetch(url: RequestInfo, init?: RequestInit): Promise<Response> };
private baseUrl: string;
protected jsonParseReviver: (key: string, value: any) => any = undefined;
constructor() {
this.http = <any>window;
this.baseUrl = "http://testweb01/FurnitureContractWebAPI";
}
getByProductId(productId: string): Promise<Product[]> {
let url_ = this.baseUrl + "/api/Product/GetById?";
if (productId === undefined)
throw new Error("The parameter 'productId' must be defined.");
else
url_ += "productId=" + encodeURIComponent("" + productId) + "&";
url_ = url_.replace(/[?&]$/, "");
let options_ = <RequestInit>{
method: "GET",
headers: {
"Content-Type": "application/json",
"Accept": "application/json"
}
};
return this.http.fetch(url_, options_).then((_response: Response) => {
return this.processGetByProductId(_response);
});
}
protected processGetByProductId(response: Response): Promise<Product[]> {
const status = response.status;
let _headers: any = {}; if (response.headers && response.headers.forEach) { response.headers.forEach((v: any, k: any) => _headers[k] = v); };
if (status === 200) {
return response.text().then((_responseText) => {
let result200: any = null;
let resultData200 = _responseText === "" ? null : JSON.parse(_responseText, this.jsonParseReviver);
if (resultData200 && resultData200.constructor === Array) {
result200 = [];
for (let item of resultData200) {
var x = Product.fromJS(item);
//console.log(x);
result200.push(Product.fromJS(item));
}
}
//console.log(result200);
return result200;
});
} else if (status !== 200 && status !== 204) {
return response.text().then((_responseText) => {
return throwException("An unexpected server error occurred.", status, _responseText, _headers);
});
}
return Promise.resolve<Product[]>(<any>null);
}
这里是Product-class的方法:
init(data?: any) {
console.log(data);
if (data) {
this.productId = data["ProductId"];
this.productNameDe = data["ProductNameDe"];
this.productNameFr = data["ProductNameFr"];
this.productNameIt = data["ProductNameIt"];
this.supplierProductId = data["SupplierProductId"];
this.supplierProductVarId = data["SupplierProductVarId"];
this.supplierProductVarName = data["SupplierProductVarName"];
this.supplierId = data["SupplierId"];
this.supplierName = data["SupplierName"];
this.additionalText = data["AdditionalText"];
this.installationCost = data["InstallationCost"];
this.deliveryCost = data["DeliveryCost"];
this.sectionId = data["SectionId"];
this.categorieId = data["CategorieId"];
this.price = data["Price"];
this.ean = data["Ean"];
this.brand = data["Brand"];
this.modifiedDate = data["ModifiedDate"] ? new Date(data["ModifiedDate"].toString()) : <any>undefined;
this.categorie = data["Categorie"] ? ProductCategory.fromJS(data["Categorie"]) : <any>undefined;
this.section = data["Section"] ? ProductSection.fromJS(data["Section"]) : <any>undefined;
}
}
static fromJS(data: any): Product {
data = typeof data === 'object' ? data : {};
let result = new Product();
result.init(data);
return result;
}
当我查看数据时,在 init()方法中,它包含了我需要的所有值。但是当我使用 data [“ProductId”] 时,该值为null / undefined。
有人可以帮忙吗?
由于
以下是我的数据对象控制台输出的屏幕截图: enter image description here
答案 0 :(得分:0)
现在我可以想出,我可以将数据对象直接转换为Product:
init(data?: any) {
var p = <Product>data;
这样可行,但我问自己,为什么生成的类有一个手动设置属性的init方法,何时可以直接转换对象?
答案 1 :(得分:0)
NSwag配置错误,使用DefaultPropertyNameHandling:CamelCase for ASP.NET Core
或者使用新的基于asp.net核心api explorer的swagger生成器自动检测合同解析器。 (实验)