好的,所以我正在尝试制作一个内存附加程序(只是一个记录器,它记录到 ArrayList 而不是控制台或文件)但现在我想禁用它,使其无法打印到控制台.
问题和网站,到目前为止我已经阅读(但我仍然无法弄清楚)..
行
MEMORY_APPENDER=false
不起作用,您不能将附加程序设置为 false.
在你的情况下最好做这样的事情:
log4j.rootLogger=错误,控制台log4j.appender.console=org.apache.log4j.ConsoleAppenderlog4j.logger.nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender = 错误,MEMORY_APPENDERlog4j.additivity.nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender = false
在您的一个示例中使用的记录器是 nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender
并且应该映射到 log4j.properties 中的记录器
或只是像 nz.ac.massey.cs.sdc.log4jassignment
这样的包部分.
看来你在这里混了很多.Log4jMemoryAppender
是你的 MEMORY_APPENDER
吗?
为什么要调用 BasicConfigurator.configure()
?你不想使用 log4j.properties
吗?
通常在课堂上你这样做是为了得到一个记录器:
包 com.mycompany;公共类 MyClass {private static final Logger log = Logger.getLogger(MyClass.class);...}
记录器名称将是完全限定的类名com.mycompany.MyClass
.
然后你可以有一个像这样的 log4j.properties
:
log4j.rootLogger=错误,控制台log4j.appender.console=org.apache.log4j.ConsoleAppenderlog4j.logger.com.mycompany=信息,文件log4j.additivity.com.mycompany=falselogfj.appender.file = <一些文件追加器>
<小时>
好的,从头开始.一个非常简单的例子.
src/main/java/Log4JTest.java
包 org.stackoverflow;导入 org.apache.log4j.Logger;/*** @作者马巴,2012-08-22*/公共类 Log4JTest {public static final Logger log = Logger.getLogger(Log4JTest.class);公共静态无效主要(字符串[]参数){log.error("main 中的错误");}}
src/main/resources/log4j.properties
log4j.rootLogger = 错误,控制台log4j.appender.console = org.apache.log4j.ConsoleAppenderlog4j.appender.console.layout=org.apache.log4j.PatternLayoutlog4j.appender.console.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
现在编译并确保 log4j.properties
与 log4j.jar
以及运行时您自己的类一起在您的类路径中.
你会看到这个:
0 [main] 错误 org.stackoverflow.Log4JTest - 主错误
从这里您可以尝试添加文件附加程序或您自己的内存附加程序.
Okay so I'm trying to make a memory appender (simply a logger, that logs to an ArrayList instead of the console or to a file) but for now I want to disable it from printing to the console.
The questions and websites, I've read so far (but I still cant figure it out is)..
It has all the segments on what I'm trying to achieve, but I'm still kind of confused.
I also read this segment from Logback or Log4j Additivity Explained Which states..
If the aditivity flag of logger X however is set to false, or disabled, then calling x.debug() will only log to the file.
So in theory my log4j.properties
file
log4j.rootLogger=ERROR, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d %5p %c (%F:%L) - %m%n
#hide the Log4jMemoryAppender from console
log4j.logger.nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender= ERROR, MEMORY_APPENDER
log4j.appender.MEMORY_APPENDER=nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender.Log4jMemoryAppender
log4j.additivity.rootLogger = false
log4j.additivity.console = false
log4j.additivity.MEMORY_APPENDER=false
Should only print ***Hello World
and exclude anything else from the MEMORY_APPENDER
, rootLogger
and console
.
package nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender;
import java.util.ArrayList;
import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.spi.LoggingEvent;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
public class Log4jMemoryAppender extends AppenderSkeleton {
ArrayList<LoggingEvent> eventsList = new ArrayList();
public static void main (String [] args) {
PropertyConfigurator.configure("Lib/log4j.properties");
Log4jMemoryAppender app = new Log4jMemoryAppender();
Logger logger = Logger.getLogger(Log4jMemoryAppender.class);
logger.setLevel(Level.INFO);
logger.addAppender(app);
logger.info("Hello World");
logger.debug("Level DEBUG Is SET");
for (LoggingEvent le: app.eventsList) {
System.out.println("***" + le.getMessage());
}
}
@Override
protected void append(LoggingEvent event) {
eventsList.add(event);
}
public void close() {
}
public boolean requiresLayout() {
return false;
}
}
But it doesn't...
(source: iforce.co.nz)
The line
MEMORY_APPENDER=false
will not work, you cannot set an appender to have the value false.
In you case better do something like this:
log4j.rootLogger=ERROR, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.logger.nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender = ERROR, MEMORY_APPENDER
log4j.additivity.nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender = false
The Logger being used in one of your example is nz.ac.massey.cs.sdc.log4jassignment.s06005586.MemoryAppender
and that should map to a logger in the log4j.properties
or just the package part like nz.ac.massey.cs.sdc.log4jassignment
.
It seems like you are mixing a lot here. Is Log4jMemoryAppender
your MEMORY_APPENDER
or not?
And why are you calling BasicConfigurator.configure()
? Don't you want to use the log4j.properties
?
Normally in a class you do this to get a logger:
package com.mycompany;
public class MyClass {
private static final Logger log = Logger.getLogger(MyClass.class);
...
}
The logger name will be the fully qualified classname com.mycompany.MyClass
.
Then you can have a log4j.properties
like this:
log4j.rootLogger=ERROR, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.logger.com.mycompany=INFO, file
log4j.additivity.com.mycompany=false
logfj.appender.file = <some file appender>
OK, starting from beginning. A very simple example.
src/main/java/Log4JTest.java
package org.stackoverflow;
import org.apache.log4j.Logger;
/**
* @author maba, 2012-08-22
*/
public class Log4JTest {
public static final Logger log = Logger.getLogger(Log4JTest.class);
public static void main(String[] args) {
log.error("Error in main");
}
}
src/main/resources/log4j.properties
log4j.rootLogger = ERROR, console
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
Now compile and make sure that log4j.properties
is in your classpath together with the log4j.jar
and your own classes when running.
You will see this:
0 [main] ERROR org.stackoverflow.Log4JTest - Error in main
From here you can try to add a file appender or your own memory appender.
这篇关于Log4j 如何阻止我的记录器打印到控制台?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持html5模板网!