我尝试将log4net与定义一起使用来自这篇文章:log4net config SqLite in code
我有那里使用的静态类(减去测试方法):
namespace My_App.Logging {
public class SqLiteLogging {
public static class SqLiteAppender {
public static IAppender GetSqliteAppender(string dbFilename) {
var dbFile = new FileInfo(dbFilename);
if (!dbFile.Exists) {
CreateLogDb(dbFile);
}
var appender = new AdoNetAppender {
ConnectionType = "System.Data.SQLite.SQLiteConnection, System.Data.SQLite",
ConnectionString = $"Data Source={dbFilename};Version=3;",
CommandText =
"INSERT INTO Log (Date, Level, Logger, Message) VALUES (@Date, @Level, @Logger, @Message)"
};
appender.AddParameter(new AdoNetAppenderParameter {
ParameterName = "@Date",
DbType = DbType.DateTime,
Layout = new RawTimeStampLayout()
});
appender.AddParameter(new AdoNetAppenderParameter {
ParameterName = "@Level",
DbType = DbType.String,
Layout = new Layout2RawLayoutAdapter(new PatternLayout("%level"))
});
appender.AddParameter(new AdoNetAppenderParameter {
ParameterName = "@Logger",
DbType = DbType.String,
Layout = new Layout2RawLayoutAdapter(new PatternLayout("%logger"))
});
appender.AddParameter(new AdoNetAppenderParameter {
ParameterName = "@Message",
DbType = DbType.String,
Layout = new Layout2RawLayoutAdapter(new PatternLayout("%message"))
});
appender.Threshold = log4net.Core.Level.All;
appender.BufferSize = 1;
appender.ActivateOptions();
return appender;
}
public static void CreateLogDb(FileInfo file) {
using (var conn = new SQLiteConnection()) {
conn.ConnectionString = $"Data Source={file.FullName};New=True;Compress=True;Synchronous=Off";
conn.Open();
using (var cmd = conn.CreateCommand()) {
cmd.CommandText = @"
CREATE TABLE IF NOT EXISTS Log(
LogId INTEGER PRIMARY KEY,
Date DATETIME NOT NULL,
Level VARCHAR(50) NOT NULL,
Logger VARCHAR(255) NOT NULL,
Message TEXT DEFAULT NULL
);
";
cmd.ExecuteNonQuery();
}
conn.Close();
}
}
}
}
}
我在ActionResult
视图的Home
方法中调用了日志记录方法:
namespace My_App.Controllers {
public class HomeController : Controller {
private static ILog _log;
public ActionResult Index() {
var dbFile = AppDomain.CurrentDomain.GetData("DataDirectory") + "/log4net.sqlite";
BasicConfigurator.Configure(SqLiteLogging.SqLiteAppender.GetSqliteAppender(dbFile));
_log = LogManager.GetLogger(typeof(HomeController));
_log.Info("Hello there");
return View();
}
...
正在应用程序的App_Data
目录中创建sqlite数据库,但没有插入任何日志写入。据我所知,使用调试器时没有任何错误。
我已经看过有关向IIS用户提供的其他帖子。将权限写入db目录但显然有创建权限。
想法?
编辑我修改了SqLiteAppender
方法以反映当前的工作条件。首先,根据下面的建议,我添加了appender.BufferSize = 1;
,然后我更改了与"消息相关联的布局"领域。出于某种原因,Layout2RawLayoutAdapter
版本比我原来的版本效果更好。
答案 0 :(得分:2)
ado提供程序有一个默认缓冲区,可以同时写入多条消息。您可以使用以下命令更改缓冲区:
appender.BufferSize = 1;
然后所有消息都将直接写入。