本文介绍了Log4j2无法使用json配置文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
似乎log4j试图通过XML解析器解析.json配置文件,但为什么?
It seems like log4j is trying to parse .json config file by XML parser, but why?
我通过命令行参数设置log4j配置文件:
I set log4j config file by command line argument:
-Dlog4j.configurationFile=src/log4j2.json
文件内容:
{
"configuration": {
"appenders": {
"Console": {
"name": "Console",
"target": "SYSTEM_OUT",
"PatternLayout": {
"pattern": "%date %thread %logger %message"
}
}
},
"loggers": {
"root": {
"level": "debug",
"appender-ref": {
"ref": "Console"
}
}
}
}
}
我得到的:
[Fatal Error] log4j2.json:1:1: Content is not allowed in prolog.
ERROR StatusLogger Error parsing D:\Dev\HDelphiCrawler\src\log4j2.json org.xml.sax.SAXParseException; systemId: file:///D:/Dev/HDelphiCrawler/src/log4j2.json; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:348)
at org.apache.logging.log4j.core.config.xml.XmlConfiguration.<init>(XmlConfiguration.java:140)
at org.apache.logging.log4j.core.config.xml.XmlConfigurationFactory.getConfiguration(XmlConfigurationFactory.java:44)
at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:410)
....and so on...
ERROR StatusLogger No logging configuration
我的lib文件夹中的Jars:
Jars in my lib folder:
- hamcrest-junit-2.0.0.0.jar
- jackson- annotations-2.6.1.jar
- jackson-core-2.6.1.jar
- jackson-databind-2.6.1.jar
- java-hamcrest-2.0.0.0.jar
- junit-4.12.jar
- kotlin-reflect.jar
- kotlin-runti me-sources.jar
- kotlin-runtime.jar
- log4j-api-2.3.jar
- log4j-core-2.3.jar
- log4j-slf4j-impl-2.3.jar
- hamcrest-junit-2.0.0.0.jar
- jackson-annotations-2.6.1.jar
- jackson-core-2.6.1.jar
- jackson-databind-2.6.1.jar
- java-hamcrest-2.0.0.0.jar
- junit-4.12.jar
- kotlin-reflect.jar
- kotlin-runtime-sources.jar
- kotlin-runtime.jar
- log4j-api-2.3.jar
- log4j-core-2.3.jar
- log4j-slf4j-impl-2.3.jar
推荐答案
您可以使用系统属性 log4j.configurationFactory
:
-Dlog4j.configurationFactory=org.apache.logging.log4j.core.config.json.JsonConfigurationFactory
这篇关于Log4j2无法使用json配置文件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!