org.jboss.netty.handler.codec.string
Class StringDecoder
java.lang.Object
org.jboss.netty.handler.codec.oneone.OneToOneDecoder
org.jboss.netty.handler.codec.string.StringDecoder
- All Implemented Interfaces:
- ChannelHandler, ChannelUpstreamHandler
@ChannelHandler.Sharable
public class StringDecoder
- extends OneToOneDecoder
Decodes a received ChannelBuffer
into a String
. Please
note that this decoder must be used with a proper FrameDecoder
such as DelimiterBasedFrameDecoder
if you are using a stream-based
transport such as TCP/IP. A typical setup for a text-based line protocol
in a TCP/IP socket would be:
ChannelPipeline
pipeline = ...;
// Decoders
pipeline.addLast("frameDecoder", new DelimiterBasedFrameDecoder
(80, Delimiters.lineDelimiter()
));
pipeline.addLast("stringDecoder", new StringDecoder
(CharsetUtil.UTF_8));
// Encoder
pipeline.addLast("stringEncoder", new StringEncoder
(CharsetUtil.UTF_8));
and then you can use a String
instead of a ChannelBuffer
as a message:
void messageReceived(ChannelHandlerContext
ctx, MessageEvent
e) {
String msg = (String) e.getMessage();
ch.write("Did you say '" + msg + "'?\n");
}
- Version:
- $Rev:231 $, $Date:2008-06-12 16:44:50 +0900 (목, 12 6월 2008) $
- Author:
- The Netty Project, Trustin Lee
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
StringDecoder
public StringDecoder()
- Creates a new instance with the current system character set.
StringDecoder
public StringDecoder(Charset charset)
- Creates a new instance with the specified character set.
StringDecoder
@Deprecated
public StringDecoder(String charsetName)
- Deprecated. Use
StringDecoder(Charset)
instead.
decode
protected Object decode(ChannelHandlerContext ctx,
Channel channel,
Object msg)
throws Exception
- Description copied from class:
OneToOneDecoder
- Transforms the specified received message into another message and return
the transformed message. Return
null
if the received message
is supposed to be discarded.
- Specified by:
decode
in class OneToOneDecoder
- Throws:
Exception
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