如何将log4net配置写入appsettings.json?
我已经在如何将log4net配置写入appsettings.json?,log4net,asp.net-core-2.0,log4net-configuration,Log4net,Asp.net Core 2.0,Log4net Configuration,我已经在.netcore2.0中实现了log4net,以登录到文本文件。因为log4net有一个配置文件,其中包含XML配置。因此,我创建了一个单独的文件log4net.config来设置它的配置,它工作正常。但我想将其配置设置为appsettings.json。是否可以将log4net配置写入appsettings.json <appSettings> <add key="IsLog" value="True" /> <add key="MaxTh
.netcore2.0
中实现了log4net
,以登录到文本文件。因为log4net有一个配置文件,其中包含XML配置
。因此,我创建了一个单独的文件log4net.config
来设置它的配置,它工作正常。但我想将其配置设置为appsettings.json
。是否可以将log4net配置写入appsettings.json
<appSettings>
<add key="IsLog" value="True" />
<add key="MaxThreads" value="3" />
</appSettings>
<log4net debug="false">
<root>
<level value="ALL" />
<appender-ref ref="RollingLogFileAppender" />
</root>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="./logs/logfile.txt" />
<appendToFile value="false" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="-1" />
<maximumFileSize value="50GB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
</log4net>
其中提到log4net不支持Json项目
。是否可以将其配置写入appsettings.json
也许这不是正确的方法,但无论如何,我设法在appsettings.json
中使用了我的log4net.config
。我把我的答案放在这里,这样如果有人不想在那个项目中使用额外的配置文件,它可以帮助他们
<appSettings>
<add key="IsLog" value="True" />
<add key="MaxThreads" value="3" />
</appSettings>
<log4net debug="false">
<root>
<level value="ALL" />
<appender-ref ref="RollingLogFileAppender" />
</root>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="./logs/logfile.txt" />
<appendToFile value="false" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="-1" />
<maximumFileSize value="50GB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
</log4net>
因此,我所做的是将我的XML转换为JSON,并在我的appSettings.JSON上使用JSON作为字符串,然后使用以下代码读取字符串
appSettings.json
使用Newtonsoft.Json
此代码用于将JSON转换为XML,但它不会将XML内容作为元素提供,因此,我将其用作流。
为了将字符串转换为流,我使用了以下代码
public static Stream GenerateStreamFromString(string s)
{
var stream = new MemoryStream();
var writer = new StreamWriter(stream);
writer.Write(s);
writer.Flush();
stream.Position = 0;
return stream;
}
而且效果很好
在这里,我首先将XML转换为JSON
,然后再次将JSON转换为XML
将其用作log4net配置
,但如果有人想使用XML
直接作为字符串,这样可以减少一些代码
如果您使用的是nuget包,那么有一种方法可以将log4net配置保存在appsettings.json中(但老实说,它不是很有用)
您可以将覆盖log4net配置文件中节点的规则写入appsettings.json(或不同环境下的appsettings.Environment.json)
从appsettings.json设置日志记录级别的示例
appsettings.json:
{
"Log4NetCore": {
"PropertyOverrides": [
{
"XPath": "/log4net/root/level",
"Attributes": {
//"value": "ALL"
//"value": "DEBUG"
//"value": "INFO"
"value": "WARN"
//"value": "ERROR"
//"value": "FATAL"
//"value": "OFF"
}
}
]
}
}
<?xml version="1.0" encoding="utf-8" ?>
<log4net>
<appender name="DebugAppender" type="log4net.Appender.DebugAppender" >
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
<file value="example.log" />
<appendToFile value="true" />
<maximumFileSize value="100KB" />
<maxSizeRollBackups value="2" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %5level %logger.%method [%line] - MESSAGE: %message%newline %exception" />
</layout>
</appender>
<root>
<level value="ALL"/>
<appender-ref ref="DebugAppender" />
<appender-ref ref="RollingFile" />
</root>
</log4net>
您仍然需要log4net配置文件,其中包含要从appsettings.json覆盖的节点:
{
"Log4NetCore": {
"PropertyOverrides": [
{
"XPath": "/log4net/root/level",
"Attributes": {
//"value": "ALL"
//"value": "DEBUG"
//"value": "INFO"
"value": "WARN"
//"value": "ERROR"
//"value": "FATAL"
//"value": "OFF"
}
}
]
}
}
<?xml version="1.0" encoding="utf-8" ?>
<log4net>
<appender name="DebugAppender" type="log4net.Appender.DebugAppender" >
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
<file value="example.log" />
<appendToFile value="true" />
<maximumFileSize value="100KB" />
<maxSizeRollBackups value="2" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %5level %logger.%method [%line] - MESSAGE: %message%newline %exception" />
</layout>
</appender>
<root>
<level value="ALL"/>
<appender-ref ref="DebugAppender" />
<appender-ref ref="RollingFile" />
</root>
</log4net>
在Startup.cs中注册:
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
// Add these lines
var loggingOptions = this.Configuration.GetSection("Log4NetCore")
.Get<Log4NetProviderOptions>();
loggerFactory.AddLog4Net(loggingOptions);
app.UseMvc();
}
}
使用Microsoft.AspNetCore.Builder;
使用Microsoft.AspNetCore.Hosting;
使用Microsoft.AspNetCore.Mvc;
使用Microsoft.Extensions.Configuration;
使用Microsoft.Extensions.DependencyInjection;
使用Microsoft.Extensions.Logging;
公营创业
{
公共启动(IConfiguration配置)
{
配置=配置;
}
公共IConfiguration配置{get;}
//此方法由运行时调用。请使用此方法将服务添加到容器中。
public void配置服务(IServiceCollection服务)
{
services.AddMvc();
}
//此方法由运行时调用。请使用此方法配置HTTP请求管道。
公共void配置(IApplicationBuilder应用程序、IHostingEnvironment环境、iLogger工厂)
{
//添加这些行
var loggingpoptions=this.Configuration.GetSection(“Log4NetCore”)
.Get();
loggerFactory.AddLog4Net(loggingOptions);
app.UseMvc();
}
}