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SocketHandler (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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java.util.logging
Class SocketHandler

java.lang.Object
  |
  +--java.util.logging.Handler
        |
        +--java.util.logging.StreamHandler
              |
              +--java.util.logging.SocketHandler

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public class SocketHandler

extends StreamHandler

Simple network logging Handler.

LogRecords are published to a network stream connection. By default the XMLFormatter class is used for formatting.

Configuration: By default each SocketHandler is initialized using the following LogManager configuration properties. If properties are not defined (or have invalid values) then the specified default values are used.

• java.util.logging.SocketHandler.level specifies the default level for the Handler (defaults to Level.ALL).
• java.util.logging.SocketHandler.filter specifies the name of a Filter class to use (defaults to no Filter).
• java.util.logging.SocketHandler.formatter specifies the name of a Formatter class to use (defaults to java.util.logging.XMLFormatter).
• java.util.logging.SocketHandler.encoding the name of the character set encoding to use (defaults to the default platform encoding).
• java.util.logging.SocketHandler.host specifies the target host name to connect to (no default).
• java.util.logging.SocketHandler.port specifies the target TCP port to use (no default).

The output IO stream is buffered, but is flushed after each LogRecord is written.

Since:

1.4

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Constructor Summary

SocketHandler()           Create a SocketHandler, using only LogManager properties (or their defaults).

SocketHandler(String host, int port)           Construct a SocketHandler using a specified host and port.

 

Method Summary
void	close()           Close this output stream.
void	publish(LogRecord record)           Format and publish a LogRecord.

 

Methods inherited from class java.util.logging.StreamHandler

flush, isLoggable, setEncoding, setOutputStream

 

Methods inherited from class java.util.logging.Handler

getEncoding, getErrorManager, getFilter, getFormatter, getLevel, reportError, setErrorManager, setFilter, setFormatter, setLevel

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

SocketHandler

public SocketHandler()
              throws IOException

Create a SocketHandler, using only LogManager properties (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 a SocketHandler using a specified host and port. The SocketHandler is configured based on LogManager properties (or their default values) except that the given target host and port arguments are 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.

Method Detail

close

public void close()
           throws SecurityException

Close this output stream.

Overrides:

close in class StreamHandler

Throws:

SecurityException - if a security manager exists and if the caller does not have LoggingPermission("control").

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publish

public void publish(LogRecord record)

Format and publish a LogRecord.

Overrides:

publish in class StreamHandler

Parameters:

record - description of the log event

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.