Question

heroku网站上的主页链接到一个不存在的github页面，因此我无法使用它。 https://elements.heroku.com/buttons/herokumx/herokumxnet https://github.com/herokumx/herokumxnet

我确实发现很多SO帖子链接到这个构建包和示例应用程序。 https://github.com/jincod/dotnetcore-buildpack https://github.com/jincod/AspNet5DemoApp

我尝试部署上述应用程序的完全未修改版本（您可以自己重复），但构建过程失败，没有特定错误。这是部署日志。

它抱怨它无法找到xproj.metaproj，我从中读到的是一个动态创建的元项目。通常用于构建服务器。所以我假设构建过程在某些时候失败了，但我不知道在哪里或如何。有什么东西可以添加到构建包中以获得更具体的构建错误吗？

我尝试了几次新鲜克隆/使用内置模板系统但是我总是遇到相同的构建错误。

这是一个错误吗？或者我做错了什么？

...
remote: APT packages Installled 
remote: Installing dotnet 
remote: 
remote: Welcome to .NET Core! 
remote: --------------------- 
remote: Learn more about .NET Core @ https://aka.ms/dotnet-docs. Use dotnet
--he lp to see available commands or go to https://aka.ms/dotnet-cli-docs. 
remote: 
remote: Telemetry 
remote:-------------- 
remote: The .NET Core tools collect usage data in order to improve your experien ce. The data is anonymous and does not include commandline arguments. The data i s collected by Microsoft and shared with the community. remote: You can opt out of telemetry by setting a DOTNET_CLI_TELEMETRY_OPTOUT en vironment variable to 1 using your favorite shell. remote: You can read more about .NET Core tools telemetry @ https://aka.ms/dotne t-cli-telemetry. 
remote: 
remote: Configuring... 
remote: ------------------- 
remote: A command is running to initially populate your local package cache, to improve restore speed and enable offline access. This command will take up to a minute to complete and will only happen once. remote: Decompressing 100% 2659 ms 
remote: Expanding 100% 8029 ms 
remote: /tmp/build_bb0646bd8303182f6bd73ce264103dff/dotnet/sdk/1.0.0-preview5-00 4232/NuGet.targets(164,5): 
error MSB3202: The project file "/tmp/build_bb0646bd8 303182f6bd73ce264103dff/src/AspNet5DemoApp/AspNet5DemoApp.xproj.metaproj" was not found. [/tmp/build_bb0646bd8303182f6bd73ce264103dff/AspNet5DemoApp.sln] 
remote:  !     Push rejected, failed to compile ASP.NET Core app. 
remote: 
remote:  !     Push failed 
remote: Verifying deploy... 
remote: 
remote: !       Push rejected to ****. 
remote:

Warning: Your console font probably doesn't support Unicode. If you experience strange characters in the output, consider switching to a TrueType font such as Consolas! To https://git.heroku.com/****.git  ! 
[remote rejected] master -> master (pre-receive hook declined) error: failed to push some refs to 'https://git.heroku.com/****.git'

编辑：我也试过这个构建包，同样没有错误 http://github.com/heroku/dotnet-buildpack.git

remote: installing https://github.com/friism/mono-builder/releases/download/v4.0
.1.44/mono-4.0.1.44.tar.gz
remote:  !     Push rejected, failed to compile ASP.NET 5 app.

edit2：尝试使用相同的项目文件等在Windows上复制构建脚本，这一切都很好。

dotnet publish project.json --output pathtoproject\heroku-output\ --configuration Release
Publishing AspNet5DemoApp for .NETCoreApp,Version=v1.0
Project AspNet5DemoApp (.NETCoreApp,Version=v1.0) will be compiled because expected outputs are missing
Compiling AspNet5DemoApp for .NETCoreApp,Version=v1.0

Compilation succeeded.
    0 Warning(s)
    0 Error(s)

Time elapsed 00:00:02.4511992

publish: Published to ...\heroku-output\
Published 1/1 projects successfully

Edit3：我编辑了要添加的构建包 - - 详细但输出没有变化。是否有某种流我需要输出输出，以便我可以读取任何可能的错误？

Answer 1

我使用noliar的buildpack来成功获得最小的.net核心   应用程序启动并运行。

步骤：

1：找到您存放git存储库的文件夹。

2：RightClick - ＆gt; Git Bash在这个文件夹中。

3：Heroku创建my-app-name --buildpack   https://github.com/noliar/dotnet-buildpack.git

4：响应应该给你git url，克隆它：

$ git clone https://git.heroku.com/my-app-name.git

5：将project.json和Program.cs复制并粘贴到my-app-name的根目录中夹。 project.json的内容：

{
    "version": "1.0.0-*"
    ,
    "buildOptions": 
    {
        "debugType": "portable"
        ,
        "emitEntryPoint": true
    }
    ,
    "dependencies": {}
    ,
    "frameworks": 
    {
        "netcoreapp1.0": 
        {
            "dependencies": 
            {
                "Microsoft.NETCore.App": 
                {
                  "type": "platform",
                  "version": "1.0.0"
                }
                ,
                "Microsoft.AspNetCore.Server.Kestrel":"1.0.0"
            }
            ,
            "imports": "dnxcore50"
        }
    }
}

Program.cs的内容：基于最小的asp.net核心应用教程这里：http://ardalis.com/the-minimal-aspnet-core-app附加内容让应用程序绑定正确的端口。

//using System;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;

////////////////////////////////////////////////////////////////
//https://msdn.microsoft.com/en-us/library/system.environmentvariabletarget(v=vs.110).aspx
// This example demonstrates the 
//     Environment.GetEnvironmentVariable,
//     Environment.SetEnvironmentVariable, and 
//     Environment.GetEnvironmentVariables overloaded methods.
using System;
using System.Collections;
using Microsoft.Win32;
////////////////////////////////////////////////////////////////

using System.Linq;  //<--to get string[].First extention 

namespace ConsoleApplication
{
    ///<summary>
    ///This class stores the url that the heroku app will launch on.
    ///It also stores a debug message variable that we can print out
    ///to the application.
    ///</summary>
    public class UrlData
    {
        /// <summary> The url in format such as "http://localhost:5000" 
        /// that the application will attach to. </summary>
        public string url = null;

        /// <summary> A debug message that will give us some insight into what happened 
        /// in the function that produced the .url component of the UrlData. </summary>
        public string debug_message = "[DEBUG_MSG_NOT_SET]";
    }

    public class Program
    {

        public static UrlData 
        GetUrl(string[] args)
        {
             //inn=="arguments inputs by priority"
            string[] inn = new string[3]; //3 elements.

            //inn[0] = "[NOTHING_FOUND]";
            inn[0] = String.Join(" | ", args);

            //NOTE: Using "$PORT" and "PORT" both will cause crash on heroku:
            inn[1] = Environment.GetEnvironmentVariable("$PORT"); //with "$"
            //inn[2] = Environment.GetEnvironmentVariable("PORT"); //NO "$"


            //Get first non-null and non-empty entry in array:
            String dyna_port = null;
            if(true == String.IsNullOrEmpty( inn[0] )){
                //Simple processing:
                dyna_port = inn.FirstOrDefault( s => !string.IsNullOrEmpty(s) );
            }else{
                //Parse the command line args:
                //Which will look like:
                // --server.urls | 5001 | 5002 | 5003
                string[] port_args = inn[0].Split('|');
                string port_arg_name = port_args[0];
                dyna_port = port_args[1];
            }


            String port_num = (String.IsNullOrEmpty( dyna_port )) ?
                              "4998" : dyna_port;

            String use_url = "[NOT_SET_USE_URL]";
            if(port_num.Contains("http") ){
                //The command-line likely injected an argument like:
                //"http://5000:80" for the port to use.
                use_url = port_num;
            }else{
                //The command-line likely injected an argument like:
                //"5000" for the server.urls.
                //Interpret it as "Port #5000"
                use_url = "http://localhost:" + port_num;
            }

            //res_msg == "response message"
            String nl = "\n";
            String res_msg = "[Working From Port#]:" + port_num + nl +
                             "|inn[0]=="             + inn[0]   + nl +
                             "|inn[1]=="             + inn[1]   + nl +
                             "|inn[2]=="             + inn[2]   ;

            UrlData results = new UrlData();
            results.url = use_url;
            results.debug_message = res_msg;

            return results;
        }

        public static void Main(string[] args)
        {
            //Step#1: Get Url to operate on:
            UrlData ud = GetUrl( args ); //ud=="url + debug-message"

            //Uncondensed Version, so you can see what classes are being
            //Used where in the chaining:
            Microsoft.AspNetCore.Hosting.WebHostBuilder  w1;
            Microsoft.AspNetCore.Hosting.IWebHostBuilder w2;
            Microsoft.AspNetCore.Hosting.IWebHostBuilder w2_5; //2_5 == 2.5
            Microsoft.AspNetCore.Hosting.IWebHostBuilder w3;
            Microsoft.AspNetCore.Hosting.IWebHost        w4;  

            w1 = new WebHostBuilder();
            w2 = w1.UseKestrel();
            w2_5 = w2.UseUrls( ud.url );

            w3 = w2_5.Configure(
                a => a.Run(c => c.Response.WriteAsync(ud.debug_message))
            );

            w4 = w3.Build();
            w4.Run();

            Console.WriteLine("[HELLO_WORLD]");
        }
    }
}

注意：很多代码都非常混乱和实验性。但它会   建立。有一些工作总是很好。

第6步：

关于git bash：

$ git add .

$ git commit

$ dotnet restore

$> dotnet run

注意：如果您没有为命令行安装.NET CLI，   你需要它。确保您的应用程序是至关重要的   在尝试推送它们之前正确编译。它简化了   故障排除。

第7步：应用程序现在应该正在运行           localhost：4998，如果您没有配置PORT           本地计算机上的环境变量。

步骤8：如果它运行，请继续进行git push和           该项目应该成功部署。        更多提示：    1. Heroku日志 - 帮我弄清楚出了什么问题。



阅读buildpack源代码并查找$ PORT的位置   引用。



看起来.net应用程序无法访问$ PORT环境变量   在heroku上运行时，需要通过命令注入端口   线参数。 noliar buildpack的目的是做什么。



这个人的帖子帮助我理解了我正在使用的一些构建脚本。特别是这一行：

dotnet run --server.urls http://+:8080

文章：

https://blog.jenyay.com/running-asp-net-core-in-heroku/

希望这有帮助。我花了很多时间研究这个问题   出。实际上是希望我能够回到你的身边   张贴以找到其他人回答。

另外，对于C＃代码的缩进感到抱歉。我不得不爆炸它   所有人都可以通过。

将.NET部署到Heroku - 构建无法创建xproj.metaproj项目文件

1 个答案: