Guy*_*ood 6 c# serilog .net-core
我有两个带有 Serilog 的记录器，它们保存到不同的文件。我想通过 appsettings.json 而不是代码创建记录器。
当我通过Startup.cs配置创建记录器时，我会得到更具体的日志，我更喜欢这种方式，因为它更清晰，并且允许其他人检查日志并了解正在发生的情况，而无需太多的技术知识。但是，我想将其应用于应用程序设置，以便我可以将代码迁移到我可能使用的任何其他项目。
仅供参考：我不想覆盖日志级别。
例如，我使用代码创建记录器，如下所示：
Log.Logger = new LoggerConfiguration()
.WriteTo.ColoredConsole()
.WriteTo.Logger(lc => lc
.Filter.ByExcluding(Matching.FromSource("Microsoft"))
.WriteTo.File("Serilogs/Program_log_.txt", rollingInterval: RollingInterval.Day)
.MinimumLevel.Information()
.MinimumLevel.Override("Microsoft", LogEventLevel.Information))
.WriteTo.Logger(lc => lc
.Filter.ByIncludingOnly(Matching.FromSource("Microsoft"))
.WriteTo.File("Serilogs/ServerTrace_log_.txt", rollingInterval: RollingInterval.Day)
.MinimumLevel.Information()
.MinimumLevel.Override("Microsoft", LogEventLevel.Information))
.CreateLogger();
这会生成两个单独的输出，我喜欢它们的格式：：
File 1可读的自定义日志：
2019-01-18 11:18:09.873 +00:00 [INF] //Some custom log information
2019-01-18 11:18:09.875 +00:00 [INF] //Some more custom log information
File 2：堆栈跟踪，服务器信息：
2019-01-18 11:17:56.378 +00:00 [INF] User profile is available. Using '//A path' as key repository and Windows DPAPI to encrypt keys at rest.
2019-01-18 11:17:57.840 +00:00 [INF] Request starting HTTP/1.1 GET https://localhost:5001/swagger/index.html
2019-01-18 11:17:58.074 +00:00 [INF] Request finished in 235.5796ms 200 text/html
2019-01-18 11:17:58.326 +00:00 [INF] Request starting HTTP/1.1 GET https://localhost:5001/swagger/v1/swagger.json
2019-01-18 11:17:58.452 +00:00 [INF] Request finished in 126.2127ms 200 application/json;charset=utf-8
当我使用 JSON appsettings 执行此操作时，它看起来像这样：
"Serilog": {
"Using": [
"Serilog.Sinks.File",
"Serilog.Filters.Expressions",
"Serilog.Settings.Configuration"
],
"WriteTo": [
{
"Name": "Logger",
"Args": {
"configureLogger": {
"Filter": [
{
"Name": "ByIncluding",
"Args": {
"expression": "SourceContext = 'Microsoft'"
}
}
],
"WriteTo": [
{
"Name": "File",
"Args": {
"path": "./Serilogs/server_logs_.log",
"rollingInterval": "Day"
}
}
]
}
}
},
{
"Name": "Logger",
"Args": {
"configureLogger": {
"Filter": [
{
"Name": "ByExcluding",
"Args": {
"expression": "SourceContext = 'Microsoft.AspNetCore.Hosting.Internal.WebHost'"
}
}
],
"WriteTo": [
{
"Name": "File",
"Args": {
"path": "./Serilogs/program_logs_.log",
"rollingInterval": "Day"
}
}
]
}
}
}
]
}
这会生成两个文件。
File 1：可读的自定义日志：
2019-01-18 11:22:52.903 +00:00 [INF] User profile is available. Using '// A path' as key repository and Windows DPAPI to encrypt keys at rest.
2019-01-18 11:22:59.229 +00:00 [INF] Route matched with {action = "PollForStatusUpdate", controller = "StatusMessage"}. Executing action {apiname}.{controller}.{method}.PollForStatusUpdate ({apiname})
2019-01-18 11:22:59.505 +00:00 [INF] Executing action method {apiname}.{controller}.{method}.PollForStatusUpdate ({apiname}) with arguments (["{apiname}.{controller}.{method}.MessageResult"]) - Validation state: "Valid"
2019-01-18 11:22:59.632 +00:00 [INF] //Some custom log information
2019-01-18 11:22:59.639 +00:00 [INF] //Some more custom log information
{apiname}.{controller}.{method}.PollForStatusUpdate ({apiname}), returned result Microsoft.AspNetCore.Mvc.OkObjectResult in 516.8129ms.
2019-01-18 11:23:00.040 +00:00 [INF] Executing ObjectResult, writing value of type '{apiname}.{controller}.{method}.MessageResult'.
2019-01-18 11:23:00.048 +00:00 [INF] Executed action {apiname}.{controller}.{method}.PollForStatusUpdate ({apiname}) in 813.08940000000007ms
File 2：堆栈跟踪，服务器信息：
2019-01-18 11:22:52.903 +00:00 [INF] User profile is available. Using 'C:\Users\msharp\AppData\Local\ASP.NET\DataProtection-Keys' as key repository and Windows DPAPI to encrypt keys at rest.
2019-01-18 11:22:54.263 +00:00 [INF] Request starting HTTP/1.1 GET https://localhost:5001/swagger/index.html
2019-01-18 11:22:54.473 +00:00 [INF] Request finished in 211.831ms 200 text/html
2019-01-18 11:22:54.737 +00:00 [INF] Request starting HTTP/1.1 GET https://localhost:5001/swagger/v1/swagger.json
2019-01-18 11:22:54.838 +00:00 [INF] Request finished in 100.8892ms 200 application/json;charset=utf-8
2019-01-18 11:22:59.205 +00:00 [INF] Request starting HTTP/1.1 POST https://localhost:5001/api/StatusMessage/PollForStatusUpdate application/json-patch+json 180
2019-01-18 11:22:59.229 +00:00 [INF] Route matched with {action = "PollForStatusUpdate", controller = "StatusMessage"}. Executing action PureValuationsApi.Controllers.StatusMessageController.PollForStatusUpdate (PureValuationsApi)
2019-01-18 11:22:59.505 +00:00 [INF] Executing action method {apiname}.{controller}.{method}.PollForStatusUpdate ({apiname}) with arguments (["{apiname}.{controller}.{method}.MessageResult"]) - Validation state: "Valid"
2019-01-18 11:22:59.632 +00:00 [INF] //Some custom lof information
2019-01-18 11:22:59.639 +00:00 [INF] //Some more custom log information
{apiname}.{controller}.{method}.PollForStatusUpdate ({apiname}), returned result Microsoft.AspNetCore.Mvc.OkObjectResult in 516.8129ms.
2019-01-18 11:23:00.040 +00:00 [INF] Executing ObjectResult, writing value of type '{apiname}.{controller}.{method}.MessageResult'.
2019-01-18 11:23:00.048 +00:00 [INF] Executed action {apiname}.{controller}.{method}.PollForStatusUpdate ({apiname}) in 813.08940000000007ms
2019-01-18 11:23:00.052 +00:00 [INF] Request finished in 847.5964ms 200 application/json; charset=utf-8
因此，通过应用感觉相同的技术，结果的结果是不同的，因为File 1现在包含更多操作信息并File 2包含堆栈加上自定义日志信息，尽管我希望它们完全分开。
我认为你的过滤器不太正确。
过滤器表达式应该是：
"expression": "SourceContext = 'Microsoft' or StartsWith(SourceContext, 'Microsoft.')"
（我想你可以不使用StartsWith(SourceContext, 'Microsoft')最后一个点，但是对于像这样的命名空间可能无法正常工作MicrosoftOrIsItReally.MyNamespace）
（内部Matching.ForSource进行了一种SourceContext.StartsWith(..)过滤，如源代码中所示）
要确认这一点，您可能需要编辑outputTemplate文件接收器的 来显示SourceContext属性并查看日志事件的来源。（默认值是"{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] {Message:lj}{NewLine}{Exception}"）。您可以将其更改"{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}]<{SourceContext}> {Message:lj}{NewLine}{Exception}"为包含该SourceContext属性。
顺便说一下，你有一个额外的、不需要的"Using"指令。没有"Serilog.Settings.Configuration"必要