接口 Logger
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方法概要
修饰符和类型方法说明voidLog a message at the DEBUG level.voidLog a message at the DEBUG level according to the specified format and arguments.voidLog an exception (throwable) at the DEBUG level with an accompanying message.voidLog a message at the ERROR level.voidLog a message at the ERROR level according to the specified format and arguments.voidLog an exception (throwable) at the ERROR level with an accompanying message.getName()Return the name of thisLoggerinstance.voidLog a message at the INFO level.voidLog a message at the INFO level according to the specified format and arguments.voidLog an exception (throwable) at the INFO level with an accompanying message.booleanIs the logger instance enabled for the DEBUG level?booleanIs the logger instance enabled for the ERROR level?booleanIs the logger instance enabled for the INFO level?booleanIs the logger instance enabled for the TRACE level?booleanIs the logger instance enabled for the WARN level?voidLog a message at the TRACE level.voidLog a message at the TRACE level according to the specified format and arguments.voidLog an exception (throwable) at the TRACE level with an accompanying message.voidLog a message at the WARN level.voidLog a message at the WARN level according to the specified format and arguments.voidLog an exception (throwable) at the WARN level with an accompanying message.
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方法详细资料
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getName
String getName()Return the name of thisLoggerinstance.- 返回:
- name of this logger instance
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isTraceEnabled
boolean isTraceEnabled()Is the logger instance enabled for the TRACE level?- 返回:
- True if this Logger is enabled for the TRACE level, false otherwise.
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trace
Log a message at the TRACE level.- 参数:
msg- the message string to be logged
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trace
Log a message at the TRACE level according to the specified format and arguments.This form avoids superfluous string concatenation when the logger is disabled for the TRACE level. However, this variant incurs the hidden (and relatively small) cost of creating an
Object[]before invoking the method, even if this logger is disabled for TRACE.- 参数:
format- the format stringarguments- a list of 3 or more arguments
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trace
Log an exception (throwable) at the TRACE level with an accompanying message.- 参数:
msg- the message accompanying the exceptiont- the exception (throwable) to log
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isDebugEnabled
boolean isDebugEnabled()Is the logger instance enabled for the DEBUG level?- 返回:
- True if this Logger is enabled for the DEBUG level, false otherwise.
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debug
Log a message at the DEBUG level.- 参数:
msg- the message string to be logged
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debug
Log a message at the DEBUG level according to the specified format and arguments.This form avoids superfluous string concatenation when the logger is disabled for the DEBUG level. However, this variant incurs the hidden (and relatively small) cost of creating an
Object[]before invoking the method, even if this logger is disabled for DEBUG.- 参数:
format- the format stringarguments- a list of 3 or more arguments
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debug
Log an exception (throwable) at the DEBUG level with an accompanying message.- 参数:
msg- the message accompanying the exceptiont- the exception (throwable) to log
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isInfoEnabled
boolean isInfoEnabled()Is the logger instance enabled for the INFO level?- 返回:
- True if this Logger is enabled for the INFO level, false otherwise.
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info
Log a message at the INFO level.- 参数:
msg- the message string to be logged
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info
Log a message at the INFO level according to the specified format and arguments.This form avoids superfluous string concatenation when the logger is disabled for the INFO level. However, this variant incurs the hidden (and relatively small) cost of creating an
Object[]before invoking the method, even if this logger is disabled for INFO.- 参数:
format- the format stringarguments- a list of 3 or more arguments
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info
Log an exception (throwable) at the INFO level with an accompanying message.- 参数:
msg- the message accompanying the exceptiont- the exception (throwable) to log
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isWarnEnabled
boolean isWarnEnabled()Is the logger instance enabled for the WARN level?- 返回:
- True if this Logger is enabled for the WARN level, false otherwise.
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warn
Log a message at the WARN level.- 参数:
msg- the message string to be logged
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warn
Log a message at the WARN level according to the specified format and arguments.This form avoids superfluous string concatenation when the logger is disabled for the WARN level. However, this variant incurs the hidden (and relatively small) cost of creating an
Object[]before invoking the method, even if this logger is disabled for WARN.- 参数:
format- the format stringarguments- a list of 3 or more arguments
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warn
Log an exception (throwable) at the WARN level with an accompanying message.- 参数:
msg- the message accompanying the exceptiont- the exception (throwable) to log
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isErrorEnabled
boolean isErrorEnabled()Is the logger instance enabled for the ERROR level?- 返回:
- True if this Logger is enabled for the ERROR level, false otherwise.
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error
Log a message at the ERROR level.- 参数:
msg- the message string to be logged
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error
Log a message at the ERROR level according to the specified format and arguments.This form avoids superfluous string concatenation when the logger is disabled for the ERROR level. However, this variant incurs the hidden (and relatively small) cost of creating an
Object[]before invoking the method, even if this logger is disabled for ERROR.- 参数:
format- the format stringarguments- a list of 3 or more arguments
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error
Log an exception (throwable) at the ERROR level with an accompanying message.- 参数:
msg- the message accompanying the exceptiont- the exception (throwable) to log
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