Question

我是java和log4j的学习者。
我只想让.log文件中的所有日志的输出没有生成，或者我不知道路径。
我只是使用eclipse并在其上运行我的程序。如果您有一个简单的程序可以帮助我学习log4j并且我如何在项目中使用它，请发帖。提前。

//这是我的Java文件///

package test;
import org.apache.log4j.Logger;
import java.io.*;

public class LoggingSample {
    private static Logger logger = Logger.getLogger("LoggingExample");

    public static void main(String[] args) {
        try {
            FileInputStream fstream = new FileInputStream("D:\\textfile.txt");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String strLine;
            while ((strLine = br.readLine()) != null) {
                System.out.println(strLine);
            }
            in.close();
        } catch (FileNotFoundException fe) {
            logger.error("File Not Found", fe);
            logger.warn("This is a warning message");
            logger.trace("This message will not be logged since log  level is set as DEBUG");
        } catch (IOException e) {
            logger.error("IOEXception occured:", e);
        }
    }
}

////这是我的属性文件////

log4j.rootLogger=INFO,CONSOLE,R
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=./logs/testlog.log
log4j.appender.R.MaxFileSize=200KB
log4j.appender.R.MaxBackupIndex=2
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d - %c - %p - %m%n

Answer 1

您可以添加自定义路径，如下所示

log = /usr/home/log4j
log4j.appender.R.File=${log}/MyLog.log

修改

添加我的整个属性文件

log4j.rootLogger=INFO,Console,FILE log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.layout=org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=%-7p %d [%t] %c %x - %m%n log4j.appender.FILE=org.apache.log4j.RollingFileAppender log4j.appender.FILE.layout=org.apache.log4j.PatternLayout log4j.appender.FILE.layout.ConversionPattern=%d - %c - %p - %m%n log4j.appender.FILE.File=C:/Log/MyLog.log

Answer 2

如果你不知道使用路径

{{1}}

它在服务器的日志文件夹中生成文件，即tomcat日志文件夹。

Answer 3

1.log4j配置文件（log4j.properties）在类路径中不存在。所以我把log4j.property放在文件夹target / classes上。

2.取而代之的是现在一切正常，感谢所有＆amp;的 @optuyvu

package test; import org.apache.log4j.Logger; import org.apache.log4j.PropertyConfigurator; import java.io.*; public class LoggingSample { private static Logger logger=Logger.getLogger("LoggingExample"); static { PropertyConfigurator.configure("D:/Vikas/LoggingExample/log4j.properties"); } public static void main(String[] args){ try{ FileInputStream fstream = new FileInputStream("D:\\textfile.txt"); DataInputStream in = new DataInputStream(fstream); BufferedReader br = new BufferedReader(new InputStreamReader(in)); String strLine; while ((strLine = br.readLine()) != null){ System.out.println (strLine); } in.close(); }catch (FileNotFoundException fe){ logger.error("File Not Found",fe); logger.warn("This is a warning message"); logger.trace("This message will not be logged since log level is set as DEBUG"); }catch (IOException e){ logger.error("IOEXception occured:", e); } } }

Log 4j文件没有生成/我不知道路径

3 个答案: