角.net核心api cors预检请求错误

本文介绍了角核心api cors预检请求错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我无法使cors使用角 core 2.1，但出现此错误：

I am unable to make cors work angular core 2.1 I get this error:

在' https：//dev...SaveAPP '来自来源' https：/ / page 已被CORS政策阻止：对飞行前请求的响应未通过访问控制检查：飞行前请求不允许重定向。

Access to XMLHttpRequest at 'dev...SaveAPP' from origin 'page' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request.

这是我的startup.cs

this is my startup.cs

public void ConfigureServices(IServiceCollection services) { services.AddCors(options => { options.AddPolicy("AllowAll", builder => builder.WithOrigins("localhost:4200", "e.corpintra", "specit-dtna-dev.e.corpintra", "specit-dtna.e.corpintra", "specit-dtna-test.e.corpintra") .AllowAnyMethod() .WithExposedHeaders("content-disposition") .AllowAnyHeader() .AllowCredentials() .SetPreflightMaxAge(TimeSpan.FromSeconds(3600))); }); services.Configure<MvcOptions>(options => { options.Filters.Add(new CorsAuthorizationFilterFactory("AllowAll")); }); services.AddMvc().AddJsonOptions(options => options.SerializerSettings.ContractResolver = new DefaultContractResolver()); services.AddAuthentication(IISDefaults.AuthenticationScheme); } public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } if (env.IsProduction() || env.IsStaging()) { app.UseExceptionHandler("/Error"); } // app.UseCorsMiddleware(); app.UseCors("AllowAll"); // app.UseCors(builder => // builder.WithOrigins("localhost:4200", "localhost:5000") //.AllowAnyOrigin() //.AllowAnyHeader() //.AllowAnyMethod()); app.UseMvc(); }

来自角度我正在使用拦截器

from angular I am using an interceptor

intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> { request = request.clone({ withCredentials: true }); return next.handle(request); }

我的api同时启用了Windows身份验证和匿名身份验证。

my api is both windows authentication and anonymous authentication enabled.

这是在Intranet上。

this is on an intranet.

推荐答案

（已解决）我得到了类似的答案尝试将 Tour of Heroes Angular 7演示转换为对远程MySQL DB进行REST调用时发生错误。我什至尝试将Apache服务器移动到本地计算机上：

(SOLVED) I had been getting a similar error while trying to convert the Tour of Heroes Angular 7 Demo to make REST calls to a remote MySQL DB. I had even tried moving the Apache server to my local machine:

通过' http：// localhost / angular-php-app / backend '来自来源' http：// localhost：4200 已被CORS政策阻止：对预检请求的响应未通过访问控制检查：预检请求不允许重定向。

Access to XMLHttpRequest at 'localhost/angular-php-app/backend' from origin 'localhost:4200' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request.

解决方案，我在这里找到它-> http：//blog.wsoft .se / category / tips-tricks /

The SOLUTION, I found it here -> blog.wsoft.se/category/tips-tricks/

这是我在我的角度应用程序中所做的事情：

Here is what I did within my angular app:

/tour-of-heroes-mysql>npm install -g cors-proxy-server ...Roaming\npm\cors-proxy-server -> ...Roaming\npm\node_modules\cors-proxy-server\index.js + cors-proxy-server@1.0.2 added 8 packages from 10 contributors in 2.376s

启动它

Started it up

tour-of-heroes-mysql>HOST=127.0.0.1 PORT=9090 cors-proxy-server & [1] 17172 /tour-of-heroes-mysql>[Sun Jan 27 2019 10:52:13 GMT-0500 (Eastern Standard Time)] - CORS Proxy Server started on 127.0.0.1:9090

编辑heroes.service以更改URL以包括代理

edit heroes.service to change the URL to include the proxy

private heroesUrl = 'localhost/angular-php-app/backend'; // URL to web api --> private heroesUrl = 'localhost:9090/localhost/angular-php-app/backend'

保存了更改并开始工作！!!!

注意： PUT操作存在一些问题，不确定代理是否正确处理了这些操作。发现这是使用CHROME的更好解决方案，只需通过将目标上的Windows属性调整为以下方式来禁用检查：

Saved the changes and IT WORKED!!!!

NOTE: Had some problems with "PUT" operations, not sure if the proxy was handling those properly. Found this as a better solution using CHROME, just disable the check by adjusting the Windows Properties on the target, to this:

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --disable-web-security --user-data-dir="C:/ChromeDevSession"

（注意-启动CHROME时会收到不支持警告，但它可以工作。在您的特殊快捷方式上桌面，仅用于测试）

(NOTE - you will get a warning 'unsupported' when you start CHROME, but it works. Make a special shortcut on your desktop, use ONLY FOR TESTING)