项目一旦出现异常，记录错误日志就显得尤为重要。今天我就分享在ASP.NET CORE中全局捕获异常并记录日志的代码，下面给出具体实现过程。
1、日志实现类
/// <summary>
///
///
public class InitRepository
{
/// <summary>
///
///
public static ILoggerRepository LogRepository { get; set; }
}
/// <summary>
///
///
public class LogHelper
{
private static readonly ILog logerror = LogManager.GetLogger(InitRepository.LogRepository.Name, "logerror");
private static readonly ILog loginfo = LogManager.GetLogger(InitRepository.LogRepository.Name, "loginfo");
#region 全局异常错误记录持久化
/// <summary>
/// 全局异常错误记录持久化
///
/// <param>
/// <param>
public static void WriteError(string throwMsg, Exception ex)
{
string errorMsg = string.Format("\\r\\n[名称]：{0}\\r\\n[方法]：{4}\\r\\n[类型]：{1}\\r\\n[信息]：{2}\\r\\n[堆栈]：{3}", new object[] { throwMsg,
ex.GetType().Name, ex.Message, ex.StackTrace.Trim(),ex.StackTrace.Split(" in ")[0].Replace("at","").Trim() });
errorMsg += "\\r\\n";
logerror.Error(errorMsg);
}
#endregion
#region 自定义操作记录
/// <summary>
///
///
/// <param>
/// <param>
/// <param>
public static void WriteInfo(string name, string message, string method = "")
{
string errorMsg = string.Format("\\r\\n[名称]：{0}", new object[] { name });
if (!string.IsNullOrWhiteSpace(message))
{
errorMsg += $"\\r\\n[方法]：{method} ";
}
errorMsg += $"\\r\\n[信息]：{message}";
errorMsg += "\\r\\n";
loginfo.Info(errorMsg);
}
public static void WriteInfo(string throwMsg, Exception ex)
{
string errorMsg = string.Format("\\r\\n[名称]：{0}\\r\\n[方法]：{4}\\r\\n[类型]：{1}\\r\\n[信息]：{2}\\r\\n[堆栈]：{3}", new object[] { throwMsg,
ex.GetType().Name, ex.Message, ex.StackTrace.Trim(),ex.StackTrace.Split(" in ")[0].Replace("at","").Trim() });
errorMsg += "\\r\\n";
loginfo.Info(errorMsg);
}
#endregion
}
2、全局异常捕获类
public class GlobalExceptions : IExceptionFilter
{
private readonly IHostEnvironment _env;
public GlobalExceptions(IHostEnvironment env)
{
_env = env;
}
public void OnException(ExceptionContext context)
{
var json = new JsonErrorResponse(); //这里面是自定义的操作记录日志
json.Message = "内部服务器错误";
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
LogHelper.WriteError(json.Message, context.Exception);
}
}
public class InternalServerErrorObjectResult : ObjectResult
{
public InternalServerErrorObjectResult(object value) : base(value)
{
StatusCode = StatusCodes.Status500InternalServerError;
}
}
public class JsonErrorResponse
{
/// <summary>
/// 生产环境的消息
///
public string Message { get; set; }
/// <summary>
/// 开发环境的消息
///
public string DevelopmentMessage { get; set; }
}
3、Startup注册
public Startup(IConfiguration configuration)
{
Configuration = configuration;
repository = LogManager.CreateRepository("NetCoreRepository");
XmlConfigurator.Configure(repository, new FileInfo("log4net.config"));
Utils.InitRepository.LogRepository = repository;
}
4、配置log4net.config文件
<configuration>
<log4net>
<appender>
<layout>
<logger>
<level>
<appender-ref>
<appender>
<param>
<param>
<param>
<param>
<param>
<param>
<param>
<layout>
<conversionpattern>
<logger>
<level>
<appender-ref>
<appender>
<param>
<param>
<param>
<param>
<param>
<param>
<param>
<layout>
<conversionpattern>
<root>
<level>
<appender-ref>
<appender-ref>
<appender-ref>
5、异常测试
/// <summary>
/// 用户登录
///
/// <param>账号
/// <param>密码
/// <returns>
[HttpPost]
[Route("Login")]
public string Login(string userName , string password)
{
Utils.LogHelper.WriteInfo("用户登录", $"账号:{userName},密码:{password}", method + "." + System.Reflection.MethodBase.GetCurrentMethod().Name);
int a = 10;
int b = 0;
//测试除0异常
int c = a / b;
return "success";
}
6、错误展示
2020-02-16 23:21:04,719 [10] ERROR logerror [(null)] -
[名称]：内部服务器错误
[方法]：Demo.WebAPI.Controllers.UserController.Login(String userName, String password)
[类型]：DivideByZeroException
[信息]：Attempted to divide by zero.
[堆栈]：at Demo.WebAPI.Controllers.UserController.Login(String userName, String password) in F:\\work2020\\Demo\\Demo.WebAPI\\Controllers\\UserController.cs:line 52
at lambda_method(Closure , Object , Object[] )
at Microsoft.Extensions.Internal.ObjectMethodExecutor.Execute(Object target, Object[] parameters)
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.SyncObjectResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeActionMethodAsync()
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeNextActionFilterAsync()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<invokenextexceptionfilterasync>g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)/<invokenextexceptionfilterasync>
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關鍵字: 日志 AspNetCore Microsoft
