The FileHandler is able to write to a single file, or write to a rotating set of files as each file reaches a specified maximum size. : 日志 « 日志 « Java 教程

35. 1. 7. The FileHandler is able to write to a single file, or write to a rotating set of files as each file reaches a specified maximum size.

The next number in a sequence is added to the end of the name of each rotating file, unless a generation (sequence) pattern is specified elsewhere.

The properties for the FileHandler are listed in the following table.

Property Name	Description	Default Value
FileHandler.level	Log level for the handler.	Level.INFO
FileHandler.filter	Filter to use.	undefined
FileHandler.formatter	Formatter to use.	java.util.logging.XMLFormatter
FileHandler.encoding	Character set encoding to use.	Default platform encoding
FileHandler.limit	Specifies approximate maximum number of bytes to write to a file. 0 means no limit.	0
FileHandler.count	Specifies how many output files to cycle through.	1
FileHandler.pattern	Pattern used to generate output filenames.	%h/java%u.log
FileHandler.append	Boolean value specifying whether to append to an existing file or overwrite it.	false

35. 1. 日志
	35. 1. 1.	A full list of levels.
	35. 1. 2.	日志方法调用
	35. 1. 3.	日志异常
	35. 1. 4.	The StreamHandler serves chiefly as a base class for all handlers that write log messages to some OutputStream.
	35. 1. 5.	写日志ConsoleHandler到System.err 。
	35. 1. 6.	The SocketHandler writes log messages to the network over a specified TCP port.
	35. 1. 7.	The FileHandler is able to write to a single file, or write to a rotating set of files as each file reaches a specified maximum size.
	35. 1. 8.	FileHandler类支持文件模式。
	35. 1. 9.	MemoryHandler是一个缓冲记忆体中。
	35. 1. 10.	ErrorManager演示
	35. 1. 11.	信息记录
	35. 1. 12.	写日志到文件
	35. 1. 13.	适当的类和方法名
	35. 1. 14.	Preventing a Logger from Forwarding Log Records to Its Parent

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