- java.lang.Object
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- java.util.logging.Handler
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- java.util.logging.StreamHandler
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- java.util.logging.SocketHandler
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public class SocketHandler extends StreamHandler
Simple network loggingHandler.LogRecordsare published to a network stream connection. By default theXMLFormatterclass is used for formatting.Configuration: By default each
SocketHandleris initialized using the followingLogManagerconfiguration properties where<handler-name>refers to the fully-qualified class name of the handler. If properties are not defined (or have invalid values) then the specified default values are used.- <handler-name>.level
specifies the default level for the
Handler(defaults toLevel.ALL). - <handler-name>.filter
specifies the name of a
Filterclass to use (defaults to noFilter). - <handler-name>.formatter
specifies the name of a
Formatterclass to use (defaults tojava.util.logging.XMLFormatter). - <handler-name>.encoding the name of the character set encoding to use (defaults to the default platform encoding).
- <handler-name>.host specifies the target host name to connect to (no default).
- <handler-name>.port specifies the target TCP port to use (no default).
For example, the properties for
SocketHandlerwould be:- java.util.logging.SocketHandler.level=INFO
- java.util.logging.SocketHandler.formatter=java.util.logging.SimpleFormatter
For a custom handler, e.g. com.foo.MyHandler, the properties would be:
- com.foo.MyHandler.level=INFO
- com.foo.MyHandler.formatter=java.util.logging.SimpleFormatter
The output IO stream is buffered, but is flushed after each
LogRecordis written.- Since:
- 1.4
- <handler-name>.level
specifies the default level for the
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Constructor Summary
Constructors Constructor Description SocketHandler()Create aSocketHandler, using onlyLogManagerproperties (or their defaults).SocketHandler(String host, int port)Construct aSocketHandlerusing a specified host and port.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidclose()Close this output stream.voidpublish(LogRecord record)Format and publish aLogRecord.-
Methods declared in class java.util.logging.StreamHandler
flush, isLoggable, setEncoding, setOutputStream
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Methods declared in class java.util.logging.Handler
getEncoding, getErrorManager, getFilter, getFormatter, getLevel, reportError, setErrorManager, setFilter, setFormatter, setLevel
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Constructor Detail
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SocketHandler
public SocketHandler() throws IOExceptionCreate aSocketHandler, using onlyLogManagerproperties (or their defaults).- Throws:
IllegalArgumentException- if the host or port are invalid or are not specified as LogManager properties.IOException- if we are unable to connect to the target host and port.
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SocketHandler
public SocketHandler(String host, int port) throws IOException
Construct aSocketHandlerusing a specified host and port. TheSocketHandleris configured based onLogManagerproperties (or their default values) except that the given target host and port arguments are used. If the host argument is empty, but not null String then the localhost is used.- Parameters:
host- target host.port- target port.- Throws:
IllegalArgumentException- if the host or port are invalid.IOException- if we are unable to connect to the target host and port.
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Method Detail
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close
public void close() throws SecurityExceptionClose this output stream.- Overrides:
closein classStreamHandler- Throws:
SecurityException- if a security manager exists and if the caller does not haveLoggingPermission("control").
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publish
public void publish(LogRecord record)
Format and publish aLogRecord.- Overrides:
publishin classStreamHandler- Parameters:
record- description of the log event. A null record is silently ignored and is not published
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