java – Log4j如何阻止我的记录器打印到控制台?

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好的,所以我正在尝试创建一个内存appender(只是一个记录器,记录到ArrayList而不是控制台或文件),但是现在我想禁止它打印到控制台.

我到目前为止所读过的问题和网站(但我仍然无法弄明白)..

> StackOverFlow Question log4j: Log output of a specific class to a specific appender

> StackOverFlow Question log4j : Disable log4j console logging and enable file logging

> Coder Launch: log4j: stop logging to console

它具有我想要实现的所有细分,但我仍然有点困惑.

我还从Logback or Log4j Additivity Explained 开始阅读这段内容.

If the aditivity flag of logger X however is set to false,or disabled,then calling x.debug() will only log to the file.

所以理论上我的log4j.properties文件

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

应该只打印*** Hello World并从MEMORY_APPENDER,rootLogger和console中排除其他任何内容.

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

但它不……

appender http://iforce.co.nz/i/2jypxucr.ilb.png

最佳答案
这条线

MEMORY_APPENDER=false

不起作用,你不能设置一个appender值false.

在你的情况下,最好做这样的事情:

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

你的一个例子中使用的记录器是nz.ac.massey.cs.sdc.log4jassignment.s

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

586.MemoryAppender,它应该映射到log4j.properties中的记录器或者只是像nz.ac.massey.cs这样的包部件.sdc.log4jassignment.

看起来你在这里混合很多. Log4jMemoryAppender是你的MEMORY_APPENDER吗?

你为什么要调用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:

package com.mycompany;

public class 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=ERROR,console
log4j.appender.console=org.apache.log4j.ConsoleAppender

log4j.logger.com.mycompany=INFO,file
log4j.additivity.com.mycompany=false

logfj.appender.file = 

好的,从头开始.一个非常简单的例子.

的src /主/爪哇/ 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 /主/资源/ 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

现在编译并确保log4j.properties在运行时与log4j.jar和您自己的类一起在您的类路径中.

你会看到这个:

0    [main] ERROR org.stackoverflow.Log4JTest  - Error in main

从这里你可以尝试添加文件appender或你自己的内存appender.

原文链接:https://www.f2er.com/java/438159.html

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