Mina自定义编码2

package net.xml;

import java.nio.charset.Charset;

import org.apache.log4j.Logger;

public class InfoXml {
private static Logger logger = Logger.getLogger(InfoXml.class);
// private short tag;
private String xml;

public short getTag(){
return (short)0x0001;
}

public int getLen(Charset charset){
int len = 0;
try {
len += xml.getBytes(charset).length;
} catch (Exception e) {
logger.error("数据错误", e);
e.printStackTrace();
}
return len;
}

// public short getTag() {
// return tag;
// }
// public void setTag(short tag) {
// this.tag = tag;
// }
public String getXml() {
return xml;
}
public void setXml(String xml) {
this.xml = xml;
}

}


重写解码编码方法
Java代码
package net.xml;

import org.apache.mina.filter.codec.demux.DemuxingProtocolCodecFactory;
import org.apache.mina.filter.codec.demux.MessageDecoder;
import org.apache.mina.filter.codec.demux.MessageEncoder;

public class InfoMessageCodecFactory extends DemuxingProtocolCodecFactory{
private MessageDecoder decoder;
private MessageEncoder<InfoXml> encoder;

public InfoMessageCodecFactory(MessageDecoder decoder,MessageEncoder<InfoXml> encoder){
this.decoder = decoder;
this.encoder = encoder;
addMessageDecoder(this.decoder);
addMessageEncoder(InfoXml.class, this.encoder);
}
}


Java代码
package net.xml;

import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;

import org.apache.log4j.Logger;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolDecoderOutput;
import org.apache.mina.filter.codec.demux.MessageDecoder;
import org.apache.mina.filter.codec.demux.MessageDecoderResult;

public class InfoMessageDecoder implements MessageDecoder{
private static Logger logger = Logger.getLogger(InfoMessageDecoder.class);
private Charset charset;
public InfoMessageDecoder(Charset charset){
this.charset = charset;
}

@Override
public MessageDecoderResult decodable(IoSession session, IoBuffer in) {
if(in.remaining() < 6){
return MessageDecoderResult.NEED_DATA;
}
short tag = in.getShort();
if (tag == (short)0x0001 || tag == (short)0x8001) {
logger.info("请求标识符：" + tag);
} else {
logger.error("未知的解码类型....");
return MessageDecoderResult.NOT_OK;
}
int len = in.getInt();
if (in.remaining() < len) {
return MessageDecoderResult.NEED_DATA;
}
return MessageDecoderResult.OK;
}

@Override
public MessageDecoderResult decode(IoSession session, IoBuffer in,
ProtocolDecoderOutput out) throws Exception {
logger.info("解码: "+in.toString());
CharsetDecoder decoder = charset.newDecoder();
short tag = in.getShort();
int len = in.getInt();
byte[] temp = new byte[len];
in.get(temp);

IoBuffer buf = IoBuffer.allocate(100).setAutoExpand(true);
buf.put(temp);
buf.flip();

InfoXml ix = new InfoXml();
String xml = buf.getString(len, decoder);

ix.setXml(xml);
out.write(ix);
return MessageDecoderResult.OK;
}

@Override
public void finishDecode(IoSession session, ProtocolDecoderOutput out)
throws Exception {
}

}


Java代码
package net.xml;

import java.nio.charset.Charset;

import org.apache.log4j.Logger;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolEncoderOutput;
import org.apache.mina.filter.codec.demux.MessageEncoder;

public class InfoMessageEncoder implements MessageEncoder<InfoXml>{
private static Logger logger = Logger.getLogger(InfoMessageEncoder.class);
private Charset charset;

public InfoMessageEncoder(Charset charset){
this.charset = charset;
}

@Override
public void encode(IoSession session, InfoXml ix, ProtocolEncoderOutput out)
throws Exception {
IoBuffer buf = IoBuffer.allocate(100).setAutoExpand(true);
buf.putShort(ix.getTag());
buf.putInt(ix.getLen(charset));
buf.putString(ix.getXml(), charset.newEncoder());
buf.flip();
logger.info("编码" + buf.toString());
out.write(buf);
}

}


业务逻辑类
Java代码
package net.xml;

import java.util.Iterator;

import org.apache.log4j.Logger;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;


public class InfoServerHandler extends IoHandlerAdapter{
public static Logger logger = Logger.getLogger(InfoServerHandler.class);
String commandText = null;
String usernameText = null;
String passwordText = null;

@Override
public void sessionCreated(IoSession session) throws Exception {
logger.info("服务端与客户端创建连接...");
}

@Override
public void sessionOpened(IoSession session) throws Exception {
logger.info("服务端与客户端连接打开...");
}

@Override
public void messageReceived(IoSession session, Object message)
throws Exception {
if (message instanceof InfoXml) {
InfoXml ix = (InfoXml)message;
String xml = ix.getXml();
System.out.println("请求数据: "+xml);

Document doc = DocumentHelper.parseText(xml);
Element rootElt = doc.getRootElement(); // 获取根节点
System.out.println("根节点：" + rootElt.getName()); // 拿到根节点的名称
Iterator it = rootElt.elementIterator();
while(it.hasNext()){
it.next();
commandText = rootElt.elementTextTrim("command");
usernameText = rootElt.elementTextTrim("username");
passwordText = rootElt.elementTextTrim("password");
}
StringBuffer sb = new StringBuffer(1000);
sb.append("<response>");
sb.append("<success>");
if ("login".equals(commandText)) {
if ("abc".equals(usernameText) && "123".equals(passwordText)) {
sb.append("true");
} else {
sb.append("false");
}
}
sb.append("</success>");
sb.append("</response>");

InfoXml res = new InfoXml();
// res.setTag((short)0x8001);
res.setXml(sb.toString());

session.write(res);
} else {
logger.info("未知请求！");
}
}

@Override
public void messageSent(IoSession session, Object message) throws Exception {
session.close();
logger.info("服务端发送信息成功...");
}

@Override
public void sessionClosed(IoSession session) throws Exception {

}

@Override
public void sessionIdle(IoSession session, IdleStatus status)
throws Exception {
logger.info("服务端进入空闲状态...");
}

@Override
public void exceptionCaught(IoSession session, Throwable cause)
throws Exception {
logger.error("服务端发送异常...", cause);
}
}


Java代码
package net.xml;

import org.apache.log4j.Logger;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IoSession;

public class InfoClientHandler extends IoHandlerAdapter{
private static Logger logger = Logger.getLogger(InfoClientHandler.class);

@Override
public void messageReceived(IoSession session, Object message)
throws Exception {
InfoXml ix = (InfoXml)message;
String xml = ix.getXml();
System.out.println("响应数据:"+xml);
}

@Override
public void exceptionCaught(IoSession session, Throwable cause)
throws Exception {
logger.error("客户端发生异常...", cause);
}
}