解决:No appenders could be found for logger

如下错误:

log4j:WARN No appenders could be found for logger (dao.hsqlmanager).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

解决方式一(main函数添加):

BasicConfigurator.configure();

解决方式二(添加log4j.properties):

# Set root logger level to DEBUG and its only appender to A1.
log4j.rootLogger=DEBUG, A1# A1 is set to be a ConsoleAppender.
log4j.appender.A1=org.apache.log4j.ConsoleAppender# A1 uses PatternLayout.
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

注意:需要添加log4j依赖

<dependency><groupId>log4jgroupId><artifactId>log4jartifactId><version>1.2.17version>
dependency>


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