{"id":22768,"date":"2025-08-26T13:40:02","date_gmt":"2025-08-26T16:40:02","guid":{"rendered":"https:\/\/king.host\/wiki\/?post_type=article&p=22768"},"modified":"2025-08-26T13:40:03","modified_gmt":"2025-08-26T16:40:03","slug":"asp-net-core-logs","status":"publish","type":"article","link":"https:\/\/king.host\/wiki\/artigo\/asp-net-core-logs\/","title":{"rendered":"ASP.NET Core Logs"},"content":{"rendered":"\n

Diferente do ASP “comum”, o ASP.NET Core nos possibilita diversas novas fun\u00e7\u00f5es, dentre elas o ASP.NET Core Logs<\/strong>, que s\u00e3o os logs de erro, para a identifica\u00e7\u00e3o de erros relacionados a execu\u00e7\u00e3o da sua aplica\u00e7\u00e3o ASP.NET core. Sobre o uso de ASP.NET Core em nossa estrutura, clique aqui<\/a>.<\/p>\n\n\n\n

Uma aplica\u00e7\u00e3o ASP.NET Core \u00e9 caracterizada por utilizar uma linha conforme abaixo no arquivo de configura\u00e7\u00e3o da sua aplica\u00e7\u00e3o, web.config:<\/p>\n\n\n\n

<pre>\n<aspNetCore processPath=\"dotnet\"\n    arguments=\".\\nome-projeto.dll\"\n    stdoutLogEnabled=\"false\"\n    stdoutLogFile=\".\\logs\\stdout\"\n<\/pre><\/code><\/pre>\n\n\n\n
Como ativar o ASP.NET Core Logs<\/h2>\n\n\n\n
Neste conjunto de passos \u00e9 explicado como \u00e9 feita a ativa\u00e7\u00e3o dos logs:<\/p>\n\n\n\n
1 – Crie uma pasta chamada logs<\/strong> no mesmo n\u00edvel do web.config;<\/p>\n\n\n\n
2 – Alterar o campo “stdoutLogEnabled<\/strong>” de “false” para “true<\/strong>” no arquivo web.config;<\/p>\n\n\n\n
3 – Caso n\u00e3o exista essa informa\u00e7\u00e3o, adicione mais c\u00f3digo a este campo de modo que fique da seguinte forma:<\/p>\n\n\n\n
<pre>\n<aspNetCore processPath=\"dotnet\"\n    arguments=\".\\MyApp.dll\"\n    stdoutLogEnabled=\"false\"\n    stdoutLogFile=\".\\logs\\stdout\"\n    hostingModel=\"inprocess\">\n  <handlerSettings>\n    <handlerSetting name=\"debugFile\" value=\".\\logs\\aspnetcore-debug.log\" \/>\n    <handlerSetting name=\"debugLevel\" value=\"FILE,TRACE\" \/>\n  <\/handlerSettings>\n<\/aspNetCore>\n\n<\/pre><\/code><\/pre>\n\n\n\n
4 – Ap\u00f3s isto, quando a aplica\u00e7\u00e3o for acessada ser\u00e3o criados arquivos dentro do diret\u00f3rio de log com o prefixo “stdout<\/strong>“.<\/p>\n\n\n\n
Uma vez que se possui os logs \u00e9 poss\u00edvel analisar de forma detalhada as causas para o erro que esteja ocorrendo na aplica\u00e7\u00e3o.<\/p>\n\n\n\n
Exemplos de erros comuns que podem ocorrer:<\/p>\n\n\n\n
1) Failed to determine the https port for redirect<\/em>.<\/strong><\/p>\n\n\n\n
O erro em quest\u00e3o no log fica desta forma:<\/p>\n\n\n\n
warn: Microsoft.AspNetCore.DataProtection.Repositories.EphemeralXmlRepository[50] Using an in-memory repository. Keys will not be persisted to storage.
warn: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[59] Neither user profile nor HKLM registry available. Using an ephemeral key repository. Protected data will be unavailable when application exits.
warn: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[35] No XML encryptor configured. Key {b899dba6-409b-4aba-ad7f-9f6c1554d98f} may be persisted to storage in unencrypted form.
Hosting environment: Production
Content root path: d:\\web\\localuser\\horticon\\www\\api
Now listening on: http:\/\/127.0.0.1:27066
Application started. Press Ctrl+C to shut down.
warn: Microsoft.AspNetCore.HttpsPolicy.HttpsRedirectionMiddleware[3]
Failed to determine the https port for redirect.<\/strong>
Application is shutting down…<\/p>\n\n\n\n
Este erro ocorre devido o dom\u00ednio n\u00e3o possuir o HTTPS ativo. A indica\u00e7\u00e3o \u00e9 ativar o Let’s Encrypt<\/a>, e uma vez que ele esteja funcional, testar novamente e acompanhar o log de erro, pois pode ser gerado um erro novo.<\/p>\n\n\n\n
2) Could not load file or assembly<\/em>.<\/strong><\/p>\n\n\n\n
O erro em quest\u00e3o no log fica desta forma:<\/p>\n\n\n\n
Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly<\/strong> ‘Microsoft.AspNetCore, Version=2.1.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60’.
The located assembly’s manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) at API.Program.CreateWebHostBuilder(String[] args) at API.Program.Main(String[] args) in C:\\Users\\smunari\\Source\\Workspaces\\horticon-backend\\Horticon\\API\\Program.cs:line 17<\/p>\n\n\n\n
O erro acima pode ocorrer por dois motivos, o assembly n\u00e3o est\u00e1 no FTP no diret\u00f3rio BIN, ou at\u00e9 mesmo como no caso acima, ele est\u00e1 referenciando uma DLL local (C:\\Users…) ao inv\u00e9s de utilizar os arquivos no servidor (D:\\web\\localuser\\dominio\\)<\/p>\n\n\n\n
3) At\u00e9 mesmo comandos SQL podem ser retornados pelo ASP.NET Core de forma detalhada, como o caso abaixo:<\/strong><\/p>\n\n\n\n
fail: Microsoft.EntityFrameworkCore.Database.Command[20102] Failed executing DbCommand (6ms) [Parameters=[@p2=’?’ (Size = 127), @p3=’?’ (Size = 8000)], CommandType=’Text’, CommandTimeout=’30’] DELETE FROM ‘AspNetUsers’ WHERE ‘Id’ = @p2 AND ‘ConcurrencyStamp’ = @p3; SELECT ROW_COUNT(); MySql.Data.MySqlClient.MySqlException (0x80004005): Cannot delete or update a parent row: a foreign key constraint fails (‘bahiavale03′.’usuario’, CONSTRAINT ‘FK_usuario_AspNetUsers’ FOREIGN KEY (‘cod_usuario’) REFERENCES ‘AspNetUsers’ (‘Id’) ON DELETE NO ACTION ON UPDATE NO ACTION) —> MySql.Data.MySqlClient.MySqlException (0x80004005): Cannot delete or update a parent row: a foreign key constraint fails (‘bahiavale03′.’usuario’, CONSTRAINT ‘FK_usuario_AspNetUsers’ FOREIGN KEY (‘cod_usuario’) REFERENCES ‘AspNetUsers’ (‘Id’) ON DELETE NO ACTION ON UPDATE NO ACTION)<\/strong>
at MySqlConnector.Protocol.PayloadData.ThrowIfError() in C:\\projects\\mysqlconnector\\src\\MySqlConnector\\Protocol\\PayloadData.cs:line 19
at MySqlConnector.Core.ServerSession.TryAsyncContinuation(Task’1 task) in C:\\projects\\mysqlconnector\\src\\MySqlConnector\\Core\\ServerSession.cs:line 870
at System.Threading.Tasks.ContinuationResultTaskFromResultTask’2.InnerInvoke()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)<\/p>\n\n\n\n
<\/p>\n","protected":false},"author":630,"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","article-category":[25],"article-tag":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article\/22768"}],"collection":[{"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article"}],"about":[{"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/types\/article"}],"author":[{"embeddable":true,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/users\/630"}],"replies":[{"embeddable":true,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/comments?post=22768"}],"version-history":[{"count":1,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article\/22768\/revisions"}],"predecessor-version":[{"id":26843,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article\/22768\/revisions\/26843"}],"wp:attachment":[{"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/media?parent=22768"}],"wp:term":[{"taxonomy":"article-category","embeddable":true,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article-category?post=22768"},{"taxonomy":"article-tag","embeddable":true,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article-tag?post=22768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}