哈喽我是不按期更新的平常,昨天群里小伙伴问到了记录日志,固然,之前我也挖过这个坑,后来一直没有来得及填上,也想着 swagger 一直又有错误信息展现的功能,就迟迟没有添加这个功能,不过昨天夜里想了想,仍是须要增长上,旨在提升框架的高效性。不按期平常就直接上代码了,我有一个小想法,就是但愿你们有好的想法,能够给我说,我会整理下,添加到框架里,并在文章头里写上html
投稿做者:这里重点说明下,是参考群里小伙伴 Hello World! 的相关内容,并在他的基础上更新,添加了注入和全局,你们能够看看他的文章,支持开源,棒棒哒。git
废话很少,直接来看,最终的效果是这样的:github
一、感谢网友@梦亦晓的意见,目前是在 .net core api 中能够捕获,至于 mvc 的view视图中的错误是否能够,热心观众能够试试,感激涕零。数据库
二、@易墨 提出了中间件的方法,在评论席里,我感受也不错,你们能够看看,中间件更偏重非业务操做,只不过须要注意中间件的顺序。json
三、感谢@blackheart 从官方教程中,提出指正,其实官方已经内置了接口ILogger,固然你能够直接用 官方地址api
四、关于日志记录,还有 NLog日志、Exceptionless分布式日志、官方的Logging等等均可以用,看我的喜爱吧。甚至能够本身写一个loghepler,可是必定要尽可能使用接口,不只能够依赖注入,还能够之后方便替换,不会到时候破坏底层框架。mvc
在 Blog.core 下的 Log 文件夹内,新建 ILoggerHelper.cs app
更新:这个接口其实也不必,你能够直接参考官方提供的ILogger,而后注入就行,固然看我的习惯吧,若是必定要本身设计,可按照个人方法设计接口框架
namespace Blog.Core.Log { /// <summary> /// 日志接口 /// </summary> public interface ILoggerHelper { /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Debug(object source, string message); /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="ps">ps</param> void Debug(object source, string message, params object[] ps); /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Debug(Type source, string message); /// <summary> /// 关键信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Info(object source, object message); /// <summary> /// 关键信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Info(Type source, object message); /// <summary> /// 警告信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Warn(object source, object message); /// <summary> /// 警告信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Warn(Type source, object message); /// <summary> /// 错误信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Error(object source, object message); /// <summary> /// 错误信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Error(Type source, object message); /// <summary> /// 失败信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Fatal(object source, object message); /// <summary> /// 失败信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> void Fatal(Type source, object message); /* Log a message object and exception */ /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Debug(object source, object message, Exception exception); /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Debug(Type source, object message, Exception exception); /// <summary> /// 关键信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Info(object source, object message, Exception exception); /// <summary> /// 关键信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Info(Type source, object message, Exception exception); /// <summary> /// 警告信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Warn(object source, object message, Exception exception); /// <summary> /// 警告信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Warn(Type source, object message, Exception exception); /// <summary> /// 错误信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Error(object source, object message, Exception exception); /// <summary> /// 错误信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Error(Type source, object message, Exception exception); /// <summary> /// 失败信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Fatal(object source, object message, Exception exception); /// <summary> /// 失败信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> void Fatal(Type source, object message, Exception exception); } }
namespace Blog.Core.Log { /// <summary> /// 日志帮助实现类 /// </summary> public class LogHelper : ILoggerHelper { private readonly ConcurrentDictionary<Type, ILog> Loggers = new ConcurrentDictionary<Type, ILog>(); /// <summary> /// 获取记录器 /// </summary> /// <param name="source">soruce</param> /// <returns></returns> private ILog GetLogger(Type source) { if (Loggers.ContainsKey(source)) { return Loggers[source]; } else { ILog logger = LogManager.GetLogger(Startup.repository.Name, source); Loggers.TryAdd(source, logger); return logger; } } /* Log a message object */ /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Debug(object source, string message) { Debug(source.GetType(), message); } /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="ps">ps</param> public void Debug(object source, string message, params object[] ps) { Debug(source.GetType(), string.Format(message, ps)); } /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Debug(Type source, string message) { ILog logger = GetLogger(source); if (logger.IsDebugEnabled) { logger.Debug(message); } } /// <summary> /// 关键信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Info(object source, object message) { Info(source.GetType(), message); } /// <summary> /// 关键信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Info(Type source, object message) { ILog logger = GetLogger(source); if (logger.IsInfoEnabled) { logger.Info(message); } } /// <summary> /// 警告信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Warn(object source, object message) { Warn(source.GetType(), message); } /// <summary> /// 警告信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Warn(Type source, object message) { ILog logger = GetLogger(source); if (logger.IsWarnEnabled) { logger.Warn(message); } } /// <summary> /// 错误信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Error(object source, object message) { Error(source.GetType(), message); } /// <summary> /// 错误信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Error(Type source, object message) { ILog logger = GetLogger(source); if (logger.IsErrorEnabled) { logger.Error(message); } } /// <summary> /// 失败信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Fatal(object source, object message) { Fatal(source.GetType(), message); } /// <summary> /// 失败信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> public void Fatal(Type source, object message) { ILog logger = GetLogger(source); if (logger.IsFatalEnabled) { logger.Fatal(message); } } /* Log a message object and exception */ /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Debug(object source, object message, Exception exception) { Debug(source.GetType(), message, exception); } /// <summary> /// 调试信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Debug(Type source, object message, Exception exception) { GetLogger(source).Debug(message, exception); } /// <summary> /// 关键信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Info(object source, object message, Exception exception) { Info(source.GetType(), message, exception); } /// <summary> /// 关键信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Info(Type source, object message, Exception exception) { GetLogger(source).Info(message, exception); } /// <summary> /// 警告信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Warn(object source, object message, Exception exception) { Warn(source.GetType(), message, exception); } /// <summary> /// 警告信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Warn(Type source, object message, Exception exception) { GetLogger(source).Warn(message, exception); } /// <summary> /// 错误信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Error(object source, object message, Exception exception) { Error(source.GetType(), message, exception); } /// <summary> /// 错误信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Error(Type source, object message, Exception exception) { GetLogger(source).Error(message, exception); } /// <summary> /// 失败信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Fatal(object source, object message, Exception exception) { Fatal(source.GetType(), message, exception); } /// <summary> /// 失败信息 /// </summary> /// <param name="source">source</param> /// <param name="message">message</param> /// <param name="exception">ex</param> public void Fatal(Type source, object message, Exception exception) { GetLogger(source).Fatal(message, exception); } } }
这个时候,你会发现还有一个错误 , 不过别慌,请往下看。less
这个具体深刻的概念,我还在研究中,有时间补充下,这里大概了解用法以及概念,留一个坑
/// <summary> /// log4net 仓储库 /// </summary> public static ILoggerRepository repository { get; set; }
Repository能够说成基于一个log4net配置节建立的log4net容器,它根据log4net配置节的指示建立其余全部对象(Logger/Appender/Filter/Layout等等)并保有他们的实例,随时为你所用。
每一个Repository都有本身惟一的名字,如 root。
通常而言一个AppDomain(或者说一个进程)有一个Repository,该AppDomain下全部程序集Assembly均可以使用这个Repository。Repository须要实现ILoggerRepository,log4net中log4net.Repository.Hierarchy.Hierarchy就经过继承LoggerRepositorySkeleton实现了ILoggerRepository,它也是log4net中惟一实现ILoggerRepository的类。
//log4net repository = LogManager.CreateRepository("");//须要获取日志的仓库名,也就是你的固然项目名
//指定配置文件,若是这里你遇到问题,应该是使用了InProcess模式,请查看Blog.Core.csproj,并删之
XmlConfigurator.Configure(repository, new FileInfo("log4net.config"));//配置文件
在 Blog.core 根目录下,添加 Log4net.config
<?xml version="1.0" encoding="utf-8"?> <configuration> <configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/> </configSections> <log4net> <!-- 将日志以回滚文件的形式写到文件中 --> <!-- 按日期切分日志文件,并将日期做为日志文件的名字 --> <appender name="RollingFileAppenderNameByDate" type="log4net.Appender.RollingFileAppender"> <!-- 日志文件存放位置,能够为绝对路径也能够为相对路径 --> <file value="C:\Logs\" /> <!-- 将日志信息追加到已有的日志文件中--> <appendToFile value="true" /> <!-- 最小锁定模式,以容许多个进程能够写入同一个文件 --> <lockingModel type="log4net.Appender.FileAppender+MinimalLock" /> <!-- 指定按日期切分日志文件 --> <rollingStyle value="Date" /> <!-- 日志文件的命名规则 --> <datePattern value=""UtilLogs_"yyyyMMdd".log"" /> <!-- 当将日期做为日志文件的名字时,必须将staticLogFileName的值设置为false --> <staticLogFileName value="false" /> <!-- 日志显示模板 --> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="【异常时间】:%date %newline%message%newline--------------------------------------------------------------------%newline" /> </layout> </appender> <root> <!-- 控制级别,由低到高:ALL|DEBUG|INFO|WARN|ERROR|FATAL|OFF --> <!-- 好比定义级别为INFO,则INFO级别向下的级别,好比DEBUG日志将不会被记录 --> <!-- 若是没有定义LEVEL的值,则缺省为DEBUG --> <level value="ALL" /> <!-- 按日期切分日志文件,并将日期做为日志文件的名字 --> <appender-ref ref="RollingFileAppenderNameByDate" /> </root> </log4net> </configuration>
最终的结构是
这个时候,咱们已经把日志添加好了,能够在任何需用用的地方去使用了,你会问了,不是全局么,总不能每一个方法都写 try catch 吧,有想法,请往下看。
提醒下:
一、下边的全局处理中,网友@梦亦晓:IExceptionFilter只能抓取Action执行过程当中出现的未处理的异常。若是想捕获view中的异常须要在startup中的Configure中 实现app.UseExceptionHandler();
在 启动文件的 ConfigureServices方法中,添加服务注入
//log日志注入 services.AddSingleton<ILoggerHelper, LogHelper>();
namespace Blog.Core.Filter { /// <summary> /// 全局异常错误日志 /// </summary> public class GlobalExceptionsFilter : IExceptionFilter { private readonly IHostingEnvironment _env; private readonly ILoggerHelper _loggerHelper; public GlobalExceptionsFilter(IHostingEnvironment env, ILoggerHelper loggerHelper) { _env = env; _loggerHelper = loggerHelper; } public void OnException(ExceptionContext context) { var json = new JsonErrorResponse(); json.Message = context.Exception.Message;//错误信息 if (_env.IsDevelopment()) { json.DevelopmentMessage = context.Exception.StackTrace;//堆栈信息 } context.Result = new InternalServerErrorObjectResult(json); //采用log4net 进行错误日志记录 _loggerHelper.Error(json.Message, WriteLog(json.Message, context.Exception)); } /// <summary> /// 自定义返回格式 /// </summary> /// <param name="throwMsg"></param> /// <param name="ex"></param> /// <returns></returns> public string WriteLog(string throwMsg, Exception ex) { return string.Format("【自定义错误】:{0} \r\n【异常类型】:{1} \r\n【异常信息】:{2} \r\n【堆栈调用】:{3}", new object[] { throwMsg, ex.GetType().Name, ex.Message, ex.StackTrace }); } } public class InternalServerErrorObjectResult : ObjectResult { public InternalServerErrorObjectResult(object value) : base(value) { StatusCode = StatusCodes.Status500InternalServerError; } } //返回错误信息 public class JsonErrorResponse { /// <summary> /// 生产环境的消息 /// </summary> public string Message { get; set; } /// <summary> /// 开发环境的消息 /// </summary> public string DevelopmentMessage { get; set; } } }
//注入全局异常捕获 services.AddMvc(o => { o.Filters.Add(typeof(GlobalExceptionsFilter)); }).SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
结构是这样的
我故意写错数据库链接字符串,看看 swagger 如何报错
看看日志是如何记录的
今天是不按期更新系列,也是群里小伙伴提出来的想法,我本身简单搞搞,这里但愿你们能够积极提意见哟,若是技术不错,我会把你的我的主页和Git放到文章中,也算是鼓励你们的一个方式了。