Java 错误 - 无法使用 log4j 登录
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Error - cannot log with log4j
提问by Erran Morad
I am trying to use log4j 1.2 jarin my hibernate 3.1(in eclipse) example project. The java code runs perfecly, but the console shows me the following log4jwarnings -
我正在尝试log4j 1.2 jar在我的hibernate 3.1（在eclipse）示例项目中使用。Java 代码完美运行，但控制台向我显示以下log4j警告 -
log4j:ERROR Could not find value for key
log4j.appender.stdout log4j.logger.org.hibernate.info
log4j:ERROR Could not instantiate appender named
"stdout log4j.logger.org.hibernate.info".
I have referenced the following -
我参考了以下内容-
- log4j-1.2.17.jar
- slf4j-api-1.6.0.jar
- slf4j-simple-1.6.0.jar
- log4j-1.2.17.jar
- slf4j-api-1.6.0.jar
- slf4j-simple-1.6.0.jar
My log4j.properties file contains -
我的 log4j.properties 文件包含 -
### Direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### set log levels - ###
log4j.rootLogger=warn, stdout log4j.logger.org.hibernate.info
### log JDBC bind parameters ###
log4j.logger.org.hibernate.type=debug
###log schema export/update ###
log4j.logger.org.hibernate.tool.hbm2ddl=debug
How do I fix these warnings ? I am new to logging and I need some help to figure it out.
如何修复这些警告？我是记录的新手，我需要一些帮助来弄清楚。
Thanks.
谢谢。
采纳答案by Erran Morad
This line:
这一行：
### Set Log Levels - ###
log4j.rootLogger=warn, stdout log4j.logger.org.hibernate=info
Should be broken into two lines:
应该分成两行：
log4j.rootLogger=warn, stdout
log4j.logger.org.hibernate=info
Wow ! As a newbie. I would have never figured out something like this.
哇 ！作为一个新手。我永远不会想出这样的事情。
The code I use finally is here -
我最终使用的代码在这里 -
### Direct log4j properties to STDOUT ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### Set Log Levels - ###
log4j.rootLogger=warn, stdout
log4j.logger.org.hibernate=info
### Log JDBC Bind Parameters ###
log4j.logger.org.hibernate.type=debug
### Log schema/export update ###
log4j.logger.org.hibernate.tool.hbm2ddl=debug
