ASP.NET Core 部署在Centos 中 偶尔出现 One or more errors occurred. (Cannot access a disposed object.Object name: 'SocketsHttpHandler'.) 之前的写法如下: var httpclientHandler = new HttpClientHandler(); httpclientHandler.ServerCertificateCustomValidationCallback = (m…

ASP.NET Core 引用外部程序包的时候,有时会出现下面的错误: The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. Sample.Infrastructure..NETStan…

services.AddCors(options =>       {                    options.AddPolicy("AnotherPolicy", builder =>                    {                        builder.AllowAnyHeader()                               .AllowAnyMethod()                      …

Introduction to Identity 66 of 93 people found this helpful By Pranav Rastogi, Rick Anderson, Tom Dykstra, Jon Galloway and Erik Reitan ASP.NET Core Identity is a membership system which allows you to add login functionality to your application. User…

Bipin Joshi (http://www.binaryintellect.net/articles/f1cee257-378a-42c1-9f2f-075a3aed1d98.aspx) Uploading files is a common requirement in web applications. In ASP.NET Core 1.0 uploading files and saving them on the server is quite easy. To that end…

简介 日志组件,作为程序员使用频率最高的组件,给程序员开发调试程序提供了必要的信息.ASP.NET Core中内置了一个通用日志接口ILogger,并实现了多种内置的日志提供器,例如 Console Debug EventSource EventLog TraceSource Azure App Service 除了内置的日志提供器,ASP.NET Core还支持了多种第三方日志工具,例如 elmah.io Gelf JSNLog KissLog.net Loggr NLog Serilog 开…

一.使用VisualStudioCode创建一个webapi项目(也可以是mvc等).一个类库(用于封装记录日志方法,当然如果使用依赖注入到控制台项目,就不需要此类库了). 二.在类库中添加NLog.NLog.Web.AspNetCore引用(NLog.Web.AspNetCore 是为 ASP.NET Core 添加了对于 NLog 的平台支持),        webapi项目添加对该类库的引用,这样控制台就无需添加nlog的引用了. 三.在类库中自定义类,简单封装记录日志方法,代码如下:…

1.创建一个新的ASP.NET Core项目 2.添加项目依赖 NLog.Web.AspNetCore 3.在项目目录下添加nlog.config文件: <?xml version="1.0" encoding="utf-8" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/X…

Uploading files is a common requirement in web applications. In ASP.NET Core 1.0 uploading files and saving them on the server is quite easy. To that end this article shows how to do just that. Begin by creating a new ASP.NET Core project. Then add H…

1.根目录新建nlog.config配置文件 <?xml version="1.0"?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true" internalLogLevel="Warn&qu…

第一步:nuget  引入  NLog.Web.AspNetCore 4.5+ 第二步:放入nlog.config <?xml version="1.0" encoding="utf-8" ?><nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance&qu…

一次HTTP请求,就是一次标准IO操作.请求是I,是输入:响应式O,是输出.任何web开发框架,其实都是在干这两件事: 接受请求并进行解析获取参数 根据参数进行渲染并输出响应内容 所以我们学习一个框架,我认为最首要的是知道如何从请求中获取参数.http请求携带参数的地方主要有下面几个地方: URL Header Body 下面看看ASP.NET Core是如何从这几个位置获取参数的. 通过URL获取参数 通过URL传参是HTTP最最常用的办法.这里简单介绍下URL相关的知识.一个URL主要分成4…

本文转自:https://www.ryadel.com/en/asp-net-core-static-files-cache-control-using-http-headers/ Every seasoned web developer experienced at least once some cache-related issue with static files. One of the most common scenarios is the following: you publi…

Cannot access a disposed object in ASP.NET Core 楠木大叔     导航 常见原因 总结   对于.neter来说,在使用ASP.NET Core的过程中,大家或多或少会遇到这样的报错--"Cannot access a disposed object".出现这样的异常的原因有很多,如果它在调试的时候出现是很容易解决的,但是有些时候它在本地运行良好,等到你部署到生产环境才会表现出来.针对这个异常,请跟随我一起来分析和探究其根本原因.   在…

https://www.codeproject.com/Articles/875547/Custom-Roles-Based-Access-Control-RBAC-in-ASP-NET Introduction In this post, I shall cover implementing custom Roles Based Access Control (RBAC) and subsequent roles maintenance in the context of an intrane…

Add JWT Bearer Authorization to Swagger and ASP.NET Core     If you have an ASP.NET Core web application that already has JWT authorization, this guide will help you add JWT (JSON Web Token) support to the Swagger UI. What is Swagger UI? Swagger UI i…

网页请求报错: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. 如图: 跨域问题解决原理 CORS全称Cross-Origin Resource Sharing,中文全称跨域资源共享.它解决跨域问题的原理是通过向http的请求报文和响应报文里面加入相应的标识告诉…

原文地址 https://docs.microsoft.com/en-us/aspnet/core/mvc/views/tag-helpers/authoring Getting started with Tag Helpers This tutorial provides an introduction to programming Tag Helpers. Introduction to Tag Helpers describes the benefits that Tag Helpers…

Creating a complex data model 创建复杂数据模型 8 of 9 people found this helpful The Contoso University sample web application demonstrates how to create ASP.NET Core 1.0 MVC web applications using Entity Framework Core 1.0 and Visual Studio 2015. For informa…

本文转自: http://webmodelling.com/webbits/aspnet/aspnet-deploy-iis.aspx 15 Sep 2016. This tutorial will show step by step how to deploy an ASP.NET Core 1 project to Internet Information Server (IIS) on a Windows 2012 R2 production server. ASP.NET Core 1…

在前面5篇博客中介绍了OAuth2和OIDC(OpenId Connect),其作用是授权和认证.那么当我们得到OAuth2的Access Token或者OIDC的Id Token之后,我们的资源服务如何来验证这些token是否有权限来执行对资源的某一项操作呢?比如我有一个API,/books,它具有如下5个操作: POST /books 添加一本书 GET /books/{id} 获取一本书 PUT /books/{id} 更新一本书 DELETE /books/{id} 删除一本书 GET…

Most of the literature concerning the theme of authentication in ASP.NET Core focuses on the use of the ASP.NET Identity framework. In that context, things don’t seem to have changed much or, more precisely, all the changes that occurred in the infra…

Submary 又升级了,目录结构有变化了 . project.json and Visual Studio 2015 with .NET Core On March 7, 2017, the .NET Core and ASP.NET Core documentation was updated for the release of Visual Studio 2017. The previous version of the documentation used Visual Studio…

In this guide, we will cover setting up a production-ready ASP.NET environment on an Ubuntu 16.04 Server.+ Note For Ubuntu 14.04 supervisord is recommended as a solution for monitoring the Kestrel process. systemd is not available on Ubuntu 14.04. Se…

Filters in ASP.NET Core MVC allow you to run code before or after specific stages in the request processing pipeline. Important This topic does not apply to Razor Pages. ASP.NET Core 2.1 and later supports IPageFilter and IAsyncPageFilterfor Razor Pa…

What is Middleware? Put simply, you use middleware components to compose the functionality of your ASP.NET Core application.  Anything your application does, even something as basic as serving up static files, is performed by middleware.  An applicat…

这篇文章主要讲解asp.net core 依赖注入的一些内容. ASP.NET Core支持依赖注入.这是一种在类和其依赖之间实现控制反转的一种技术(IOC). 一．依赖注入概述 1.原始的代码 依赖就是一个对象的创建需要另一个对象.下面的MyDependency是应用中其他类需要的依赖: public class MyDependency { public MyDependency() { } public Task WriteMessage(string message) { Console…

Filters in ASP.NET Core allow code to be run before or after specific stages in the request processing pipeline. Built-in filters handle tasks such as: Authorization (preventing access to resources a user isn't authorized for). Response caching (shor…

翻译自 https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-5.0 本文介绍了在 Ubuntu 16.04 服务器上设置生产环境可用的 ASP.NET Core 环境.这里的介绍对于更新版本的 Ubuntu 可能也会工作,但是并没有在更新版本的服务器上测试. 更过关于 ASP.NET Core 只是的 Linux 发行版,请查看 Prerequisites for .NE…

摘要 asp.net core发布至今已经将近6年了,很多人对于这一块还是有些陌生,或者说没接触过:接触过的,对于asp.net core整个启动过程,监听过程,以及请求过程,响应过程也是一知半解,可能有的同学在面试中有被问过整个的启动过程:对此,有个想法就是针对于之前没有接触过core的,后续会持…