karaf中利用Bundle引入外部log4j配置文件
环境准备:
1.在karaf_home下新建 config及logs目录
2.将mylog4j.properties拷贝到config文件夹下
查看log4j-1.2.17.jar/MANIFEST.MF
Manifest-Version: 1.0
Export-Package: org.apache.log4j.net;uses:="org.apache.log4j,org.apach
e.log4j.spi,javax.naming,org.apache.log4j.helpers,javax.jms,org.apach
e.log4j.xml,javax.mail,javax.mail.internet,org.w3c.dom,javax.jmdns";v
ersion="1.2.17",org.apache.log4j.jmx;uses:="org.apache.log4j,javax.ma
nagement,org.apache.log4j.helpers,org.apache.log4j.spi";version="1.2.
17",org.apache.log4j.jdbc;uses:="org.apache.log4j,org.apache.log4j.sp
i";version="1.2.17",org.apache.log4j.config;uses:="org.apache.log4j.h
elpers,org.apache.log4j,org.apache.log4j.spi";version="1.2.17",org.ap
ache.log4j.helpers;uses:="org.apache.log4j,org.apache.log4j.spi,org.a
pache.log4j.pattern";version="1.2.17",org.apache.log4j;uses:="org.apa
che.log4j.spi,org.apache.log4j.helpers,org.apache.log4j.pattern,org.a
pache.log4j.or,org.apache.log4j.config";version="1.2.17",org.apache.l
og4j.or.jms;uses:="org.apache.log4j.helpers,javax.jms,org.apache.log4
j.or";version="1.2.17",org.apache.log4j.nt;uses:="org.apache.log4j.he
lpers,org.apache.log4j,org.apache.log4j.spi";version="1.2.17",org.apa
che.log4j.or.sax;uses:="org.apache.log4j.or,org.xml.sax";version="1.2
.17",org.apache.log4j.pattern;uses:="org.apache.log4j.helpers,org.apa
che.log4j.spi,org.apache.log4j,org.apache.log4j.or";version="1.2.17",
org.apache.log4j.spi;uses:="org.apache.log4j,org.apache.log4j.helpers
,org.apache.log4j.or";version="1.2.17",org.apache.log4j.rewrite;uses:
="org.apache.log4j,org.apache.log4j.spi,org.apache.log4j.helpers,org.
apache.log4j.xml,org.w3c.dom";version="1.2.17",org.apache.log4j.or;us
es:="org.apache.log4j.helpers,org.apache.log4j.spi,org.apache.log4j";
version="1.2.17",org.apache.log4j.xml;uses:="javax.xml.parsers,org.w3
c.dom,org.xml.sax,org.apache.log4j.config,org.apache.log4j.helpers,or
g.apache.log4j,org.apache.log4j.spi,org.apache.log4j.or";version="1.2
.17",org.apache.log4j.varia;uses:="org.apache.log4j.spi,org.apache.lo
g4j,org.apache.log4j.helpers";version="1.2.17"
Ignore-Package: com.sun.jdmk.comm,javax.swing.text,javax.swing.border,
javax.swing.tree,javax.swing,com.ibm.uvm.tools,javax.swing.table,java
x.swing.event
Built-By: cy
Tool: Bnd-0.0.357
Bundle-Name: Apache Log4j
Created-By: Apache Maven Bundle Plugin
Bundle-Vendor: Apache Software Foundation
Build-Jdk: 1.6.0_23
Bundle-Version: 1.2.17
Bnd-LastModified: 1336302107501
Bundle-ManifestVersion: 2
Bundle-License: http://www.apache.org/licenses/LICENSE-2.0.txt
Bundle-Description: Apache Log4j 1.2
Bundle-DocURL: http://logging.apache.org/log4j/1.2
Bundle-SymbolicName: log4j
Import-Package: javax.jmdns;resolution:=optional,javax.jms;resolution:
=optional,javax.mail;resolution:=optional,javax.mail.internet;resolut
ion:=optional,javax.management,javax.naming,javax.xml.parsers,org.w3c
.dom,org.xml.sax,org.xml.sax.helpers Name: org.apache.log4j
DynamicImport-Package: *
Implementation-Vendor: "Apache Software Foundation"
Implementation-Title: log4j
Implementation-Version: 1.2.17我们能够看到 log4j-1.2.17.jar 就是一个Bundle
热部署 log4j
启动karaf,将 log4j-1.2.17.jar 拷贝到karaf_home/deploy文件夹下
输入 list 命令。能够查看Bundle已经成功安装
mylog4j.properties
### direct log messages to stdout ###
log4j.appender.consoleout=org.apache.log4j.ConsoleAppender
log4j.appender.consoleout.layout=org.apache.log4j.PatternLayout
log4j.appender.consoleout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c:%L - %m%n ### direct messages to file myfile.log ###
log4j.appender.myfile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.myfile.File=logs/myfile.log
log4j.appender.myfile.DatePattern='.'yyyy-MM-dd
log4j.appender.myfile.layout=org.apache.log4j.PatternLayout
log4j.appender.myfile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c:%L - %m%n log4j.rootLogger==info,consoleout,myfile
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <groupId>com.demo.hello.provider</groupId>
<artifactId>log-test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>bundle</packaging> <name>log-test</name>
<url>http://maven.apache.org</url> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties> <dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>org.osgi.core</artifactId>
<version>4.2.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
<configuration>
<instructions>
<Import-Package>
org.apache.log4j,
org.osgi.framework.*
</Import-Package>
<Bundle-Activator>com.demo.hello.provider.Activator</Bundle-Activator>
</instructions>
</configuration>
</plugin>
</plugins>
</build>
</project>
Activitor
/**
*
* @author wumingkun
* @version 1.0.0
* @Description
*/ package com.demo.hello.provider; import org.apache.log4j.Logger;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext; import com.demo.hello.provider.log.LoggerFactory; /**
* @author wumingkun
*
*/
public class Activator implements BundleActivator { /* (non-Javadoc)
* @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
*/
public void start(BundleContext context) throws Exception {
Logger logger =LoggerFactory.getLogger(Activator.class);
logger.info("bundle start...");
} /* (non-Javadoc)
* @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
*/
public void stop(BundleContext context) throws Exception { } }
LoggerFactory:
/**
*
* @author wumingkun
* @version 1.0.0
* @Description 日志工厂类
*/ package com.demo.hello.provider.log; import java.io.File; import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator; /**
* @author wumingkun
*
*/
public class LoggerFactory {
public static final String CONFIG_DIR = "config";
public static final String LOG4J_CONFIG = "myLog4j.properties";
private static String fileName = getFileName(); public static Logger getLogger(Class clazz) {
Logger logger = Logger.getLogger(clazz);
loadProperty();
return logger;
} private static String getFileName() {
return System.getProperty("user.dir") + File.separator + CONFIG_DIR
+ File.separator + LOG4J_CONFIG;
} public static void loadProperty() {
PropertyConfigurator.configure(fileName);
}
}
部署log-test
在karaf命令行能够看到,例如以下图所看到的:
在karaf_home/logs能够看到生成名为 myfile.log的日志文件
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