日志文件很重要。可以打印細微的錯誤

1.maven的依賴

<dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId><version>3.4</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency><!-- simple logg facade for java（slf4-api.jar）日志接口 和 log4j具體日志系統之間的適配器 --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.12</version></dependency><!--這個是zookpper客戶端與日志沒有多大關系--><dependency><groupId>com.101tec</groupId><artifactId>zkclient</artifactId><version>0.10</version></dependency>

2.log4j.properties文件配置

log4j.rootLogger=DEBUG,Console,File org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JLogger log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.Target=System.out log4j.appender.Console.layout=org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=[%p][%d{yyyy-MM-dd HH\:mm\:ss,SSS}][%c]%m%nlog4j.appender.File=org.apache.log4j.RollingFileAppender log4j.appender.File.File=gms.log log4j.appender.File.MaxFileSize=10MB log4j.appender.File.Threshold=ALL log4j.appender.File.layout=org.apache.log4j.PatternLayout log4j.appender.File.layout.ConversionPattern=[%p][%d{yyyy-MM-dd HH\:mm\:ss,SSS}][%c]%m%n

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第二種配置文件

maven文件

<dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.21</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.21</version></dependency>

2.log4j.properties文件配置

# Global logging configuration log4j.rootLogger=INFO, stdout # MyBatis logging configuration... log4j.logger.org .mybatis.example.BlogMapper=TRACE # Console output... log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

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轉載于:https://www.cnblogs.com/kaiwen1/p/8549952.html

總結

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