小编jcm*_*dan的帖子

我试图使用vscode在ubuntu上运行和ASPNET核心应用程序。当运行应用程序时，它给我这个错误：

  System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
   at …

嗨，我使用 WCF RestFull 服务工作，使用 JsonNet 序列化我的对象我有这个方法：用户对象有一个属性类型 byte[] 像这样

public class User
{
   public int Id {get;set;}
   public string UserName {get;set}
   public byte[] Photo {get;set;}
}

但是我发了一个帖子，照片的大小超过 41 Kb 得到了 HttpStatusCode“413 请求实体太大”

[WebInvoke(Method = "PUT",
         RequestFormat = WebMessageFormat.Json,
         ResponseFormat = WebMessageFormat.Json,
         BodyStyle = WebMessageBodyStyle.Wrapped,
         UriTemplate = "/user/{id}/")]
        public Stream EditUser(string id, Stream input)
        {
            try
            {
                string json = input.ConvertToString();
                User usr = json.FromJSON<User>();
                usr.Update();

                return null;
            }             
            catch (Exception ex)
            {  
                SetInternalServerErrorResponse();
                return GetResponseError(ex);
            }
        }

这是我的网络配置

<bindings>
              <basicHttpBinding>
                  <binding …

我有这个Angular2组件,我尝试使用PersonServie发出两个HTTP并行请求(工作正常).但该Observable.forkJoin方法抛出此错误:EXCEPTION: TypeError: this._subscribe is not a function in [null]

评估getIdentificationTypes()和getPerson()功能,每个返回一个Observable对象.

我错过了什么？

 import { Component, OnInit } from 'angular2/core';
    import { Router, RouteParams } from 'angular2/router';
    import {ROUTER_DIRECTIVES, ROUTER_PROVIDERS} from 'angular2/router';
    import { Observable } from 'rxjs/Rx';
    import 'rxjs/Rx';

    // more imports for models and other components//


    @Component({
        selector: 'my-coponent',
        templateUrl: 'template',
        directives: [ROUTER_DIRECTIVES]
    })

    export class MyComponent implements OnInit {
           public identificationTypes: IdentificationType[];
           public person : Person;
       // some public and …