java 在 Maven 项目中使用 log4j
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Using log4j in maven project
提问by user1790894
I have trouble creating the log file
我在创建日志文件时遇到问题
I added in my pom.xml
我在我的 pom.xml 中添加
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
then I placed log4j.properies under resources folder
然后我将 log4j.properies 放在资源文件夹下
# Define the root logger with appender file
log = /home/soumya/log4j
log4j.rootLogger = DEBUG, FILE
# Define the file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=${log}/log.out
# Define the layout for file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%m%n
Then in My java code I use
然后在我的java代码中我使用
public class Test
{
static Logger logger = Logger.getLogger(Test.class.getName());
public void testLog(){
logger.info("testing ..!!!");
}
But when running I got below error and the log file is not created !!!
但是在运行时出现以下错误并且未创建日志文件！！！
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
My maven version is Apache Maven 2.2.1 (rdebian-6) and I am using ecclipse Indigo Appreciate any help
我的 maven 版本是 Apache Maven 2.2.1 (rdebian-6)，我正在使用 ecclipse Indigo 感谢任何帮助
回答by Vito Limandibhrata
SLF4j library needs to be included manually in your pom.xml
SLF4j 库需要手动包含在你的 pom.xml 中
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.1</version>
</dependency>
