Netty actual combat-Object codec, Netty object Network transmission

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Instance code: http://download.csdn.net/detail/jiangtao_st/7677503

1. Server-side code
   

   <span style= "FONT-SIZE:12PX;" >/** * * <p> * Netty Server Simple * </p> * * linebasedframedecoder + message line break * * @author Check Inn HK * @ creation time: 201 4 year July 7 * @version: V1.0 */public class Nettyserver {private final int port = 8989; @Testpublic void Nettyserver () {EventLoop Group Bossgroup = new Nioeventloopgroup (); Eventloopgroup Workergroup = new Nioeventloopgroup (); try {serverbootstrap serverbootstrap = new Serverbootstrap (); Serverbootstrap.group (Bossgroup,workergroup). Channel (nioserversocketchannel.class). Option (Channeloption.so_ BACKLOG, 1024x768). Childhandler (New Childchannelhandler ());//Bind port, synchronous wait channelfuture futrue = serverbootstrap.bind (port) . sync ();//wait for the service listener port to close Futrue.channel (). Closefuture (). sync (); catch (Interruptedexception e) {//TODO auto-generated catch Blocke.printstacktrace ();} finally{//exit, release thread and other related resources bossgroup.shutdowngracefully (); workergroup.shutdowngracefully ();}} Private class Childchannelhandler extends channelinitializer<socketchannel>{@Overrideprotected void INITCHannel (Socketchannel ch) throws Exception {//ch.pipeline (). AddLast (New Linebasedframedecoder (1024x768));////bytebuf delimiter = Unpooled.copiedbuffer ("$_". GetBytes ());//ch.pipeline (). AddLast (New Delimiterbasedframedecoder (2048, delimiter));////ch.pipeline (). AddLast (new Fixedlengthframedecoder); Ch.pipeline (). AddLast (New Objectdecoder ( 1024*1024,classresolvers.weakcachingconcurrentresolver (This.getclass (). getClassLoader ()))); Ch.pipeline (). AddLast (New Objectencoder ()), Ch.pipeline (). AddLast (New Stringdecoder ()); Ch.pipeline (). AddLast (New Userrespserverhandler ());}}} </span>

2. client-side code
   

   <span style= "FONT-SIZE:12PX;" >/** * * <p> * nettyclient Implementation * </p> * * @author Check Inn HK * @ creation Time: July 7, 2014 * @version: V1.0 */public class Ne ttyclient {public void connect (int port,string host) {Eventloopgroup group = new Nioeventloopgroup (); try {Bootstrap bootst Rap = new Bootstrap (); Bootstrap.group (group). Channel (niosocketchannel.class). Option (Channeloption.tcp_nodelay, true). Handler (new channelinitializer<socketchannel> () {@Overrideprotected void Initchannel (Socketchannel ch) Throws Exception {Ch.pipeline (). AddLast (New Objectdecoder (1024,classresolvers.weakcachingconcurrentresolver ( This.getclass (). getClassLoader ())), Ch.pipeline (). AddLast (New Objectencoder ()); Ch.pipeline (). AddLast (New Stringdecoder ()); Ch.pipeline (). AddLast (New Userqueryclienthandler ());}); /initiates an asynchronous link operation channelfuture channelfuture = Bootstrap.connect (host, port). sync (); Channelfuture.channel (). Closefuture (). Sync ();} catch (Interruptedexception e) {//TODO auto-generated catch Blocke.printstacktrace ();} Finally{//off, releasing thread resources group.shutdowngracefully ();}} @Testpublic void Nettyclient () {new Nettyclient (). Connect (8989, "localhost");}} </span>

3. ServerHander code
   

   <span style= "FONT-SIZE:12PX;" >/** * * <p> * User Query return * </p> * * @author Check Inn HK * @ creation Time: July 7, 2014 * @version: V1.0 */public class Userrespse Rverhandler extends Channelinboundhandleradapter {@Overridepublic void Channelread (Channelhandlercontext ctx, Object msg) throws Exception {userquery userquery = (userquery) msg; System.out.println ("Received query request from client:" + string.valueof (userquery)); if (userquery! = null && Userquery.getuserid ( )! = 0) {Userdo Userdo = Getuserbyid (Userquery.getuserid ()); Ctx.writeandflush (Userdo);}} @Overridepublic void Exceptioncaught (Channelhandlercontext ctx, Throwable cause) throws Exception {System.out.println ( "Server has Exception," + cause.getcause ());} Private Userdo Getuserbyid (int userid) {if (userid% 2 = = 0) {Userdo Zhuoxuan = new Userdo (); Zhuoxuan.setuserid (userid); Zhuo Xuan.setsex (1); Zhuoxuan.setuname ("Check Inn HK"); Zhuoxuan.setunick ("Zhuoxuan"); Zhuoxuan.setemail ("[email protected] "); return Zhuoxuan;} Else{userdo Zhuoxuan = new Userdo (); Zhuoxuan.setuserid(userId); Zhuoxuan.setsex (1); Zhuoxuan.setuname ("Zhang San"); Zhuoxuan.setunick ("Zhangsan"); Zhuoxuan.setemail ("[Email  protected] "); return Zhuoxuan;}}} </span><strong style= "FONT-SIZE:14PX;" ></strong>

   
   
5. Clienthander Code

<span style= "font-size:12px;" >/** * * <p> * User Enquiry Request Handler * </p> * * @author Check Inn HK * @ creation Time: July 7, 2014 * @version: V1.0 */public class use Rqueryclienthandler extends Channelinboundhandleradapter {public userqueryclienthandler () {} @Overridepublic void Channelactive (Channelhandlercontext ctx) throws Exception {for (int i = 0; i <, i++) {userquery userquery = new Use Rquery (); Userquery.setuserid (1001+i); Ctx.write (userquery);} Ctx.flush ();} @Overridepublic void Channelread (Channelhandlercontext ctx, Object msg) throws Exception {String message = string.valueof (msg); SYSTEM.OUT.PRINTLN ("netty-client:receive message," + message);} @Overridepublic void Channelreadcomplete (Channelhandlercontext ctx) throws Exception {Ctx.flush ();} @Overridepublic void Exceptioncaught (Channelhandlercontext ctx, Throwable cause) throws Exception {System.out.println ( "Client has Exception," + cause.getcause ());}} </span>