根logger主要定义log4j支持的日志级别及输出目的地,其语法为: log4j.rootLogger = [ level ] , appenderName, appenderName, … 其中,level 是日志记录的优先级,分为OFF、FATAL、ERROR、WARN、INFO、DEBUG、ALL或者自定义的级别。 建议只使用四个级别,优先级从高到低分别是
importorg.apache.logging.log4j.LogManager;importorg.apache.logging.log4j.Logger;publicclassHelloWorld{privatestaticfinal Logger logger=LogManager.getLogger(HelloWorld.class);publicstaticvoidmain(String[]args){logger.debug("Hello from Log4j 2");// in old days, we need to check the log level to increa...
When a message is logged via aLoggerit is logged with a certain log level. The built-in log levels are: SEVERE WARNING INFO CONFIG FINE FINER FINEST The log level is represented by the classjava.util.logging.Level. This class contains a constant for each of the above log levels. It is...
staticLogLevelvalueOf(Stringname) Returns the enum constant of this type with the specified name. staticLogLevel[]values() Returns an array containing the constants of this enum type, in the order they are declared. Methods inherited from class java.lang.Enum ...
logger.debug("Hello from Log4j 2");// in old days, we need to check the log level to increase performance/*if (logger.isDebugEnabled()) { logger.debug("{}", getNumber()); }*/// with Java 8, we can do this, no need to check the log levellogger.debug("{}", () -> getNumb...
level: com.bowen.dao: trace logging.config是用来指定项目启动的时候,读取哪个配置文件,这里指定的是日志配置文件是classpath:logback.xml文件,关于日志的相关配置信息,都放在logback.xml文件中了。logging.level是用来指定具体的 mapper 中日志的输出级别,上面的配置表示com.bowen.dao包下的所有 mapper 日志输出级别为...
logging.level是用来指定具体的 mapper 中日志的输出级别,上面的配置表示com.bowen.dao包下的所有 mapper 日志输出级别为 trace,会将操作数据库的 sql 打印出来,开发时设置成 trace 方便定位问题,在生产环境上,将这个日志级别再设置成 error 级别即可。 常用的日志级别按照从高到低依次为:ERROR、WARN、INFO、DEBUG...
.level= ALL java.util.logging.ConsoleHandler.level = FINER Here we're setting the global Level to ALL (log all message), but for the ConsoleHandler we're choosing the Level as FINER. This implies that the console should ignore messages lower in priority than FINER. To run the application ...
All messages with a log level less than the default level of INFO (FINEST, FINER, FINE, and CONFIG) provide information related to debugging and must be specifically enabled. Instructions for doing this are contained in the Sun Java System Application Server Administrator's Guide....
public boolean equals(java.lang.Object obj) Equality comparison method. Overrides: equals in class java.util.logging.Level hashCode public int hashCode() Overrides: hashCode in class java.util.logging.Level getLevel public static java.util.logging.Level getLevel(int severity) Converts sever...