Question

我正在尝试使用Angular调用WebAPI，但是遇到了未经授权的凭据问题。它在IE中工作正常，但在Chrome和FF（401未授权）中，凭据不会被转发。

我认为解决方案是将默认凭据添加到Angular的调用中，但我不知道该怎么做，或者可能还有其他解决方案。

Angular调用

import {Http} from 'angular2/http';
import {Injectable} from 'angular2/core';
import 'rxjs/Rx';

@Injectable()
export class MyListService{

    constructor(private _http: Http) { }

    getMyList() {
    //return an observable
    return this._http.get('http:////localhost:2311/api/MyListApi')

        .map((response) => {
            return response.json();
        });
        //.retry(3);

    }

}

Answer 1

您可以尝试这种方式：

public static void partnerStmt(ArrayList<Integer> keys, int age, int sex, int range){
    int amount = keys.size();
    int aageMin = alter - range;
    int ageMax = alter + range;
    int[][] storeArr = new int[amount][2];

    if (ageMin < 18)
        ageMin = 18;

    String select = "SELECT ID FROM individuen WHERE Age BETWEEN " 
            + ageMin +" AND "+ ageMax + " AND Family IS 2 AND Partner IS NULL AND Sex "
            + "IS " + sex + " ORDER BY RANDOM() LIMIT " +amount+";";

    try {
        Statement stmt = DBController.connection.createStatement();
        ResultSet rs = stmt.executeQuery(select);

        for (int i = 0; i < anzahl; i++){
            int idColumn = rs.findColumn("ID");
            int idPartner = rs.getInt(idColumn);
            storeArr[i][0] = keys.get(i);
            storeArr[i][1] = idPartner;
            rs.next();
        }

        PreparedStatement person = DBController.connection.prepareStatement(
            "UPDATE individuen set Partner = ? WHERE ID = ?");

        for (int i = 0; i < amount; i++){
            person.setInt(1, storeArr[i][0]);
            person.setInt(2, storeArr[i][1]);
            person.addBatch();
        }

        person.executeBatch();
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

看起来像Angular2的最近fix。您还可以查看this answer。

Answer 2

我也有这个问题。我的Angular2-rc4应用程序在另一个域上调用.NET Core 1.0.0 WebAPI应用程序。发布此应用程序以防其他域名。

如其他人所述，在Angular2中传递withCredentials为真：

getUser() {
    return this.http.get(this._apiUrl + "/account/GetUser", { withCredentials: true })
        .toPromise()
        .then(response => response.json().data)
        .catch(this.handleError);
}

在您的WebAPI项目中，您可以在Startup.cs（而不是web.config）中设置CORS策略：

public void ConfigureServices(IServiceCollection services)
{
    var corsBuilder = new CorsPolicyBuilder();
    corsBuilder.AllowAnyHeader();
    corsBuilder.AllowAnyMethod();
    corsBuilder.AllowAnyOrigin();
    corsBuilder.AllowCredentials();
    services.AddCors(options =>
    {
        options.AddPolicy("AllowAll", corsBuilder.Build());
    });
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    app.UseCors("AllowAll");
}

当然，根据您应用的需求设置您的政策，这只是允许所有测试。示例here和官方.NET Core文档here提供了更多详细信息。

Angular 2调用ASP.NET WebAPI

2 个答案: