Netty4 Simple HTTP Service setup

Server. Httpserver.java

package server;import io.netty.bootstrap.serverbootstrap;import io.netty.channel.channelfuture; import io.netty.channel.channelinitializer;import io.netty.channel.channeloption;import  io.netty.channel.eventloopgroup;import io.netty.channel.nio.nioeventloopgroup;import  Io.netty.channel.socket.socketchannel;import io.netty.channel.socket.nio.nioserversocketchannel;import  io.netty.handler.codec.http.HttpRequestDecoder;import  io.netty.handler.codec.http.httpresponseencoder;import org.apache.log4j.logger;public class  Httpserver {private logger logger = logger.getlogger (HttpServer.class);         public void start (Int port)  throws Exception  {    logger.info ("http server listening on " +port+ "  ...");             eventloopgroup  Bossgroup = new nioeventloopgroup ();         Eventloopgroup workergroup = new nioeventloopgroup ();         try {            serverbootstrap  b = new serverbootstrap ();             b.group (Bossgroup, workergroup)               .channel (Nioserversocketchannel.class)               .childhandler (new channelinitializer<socketchannel> ()  {                     @ override                     public vOid initchannel (socketchannel ch)  throws Exception {                         The  // server side sends the HttpResponse, so use Httpresponseencoder to encode                           Ch.pipeline (). AddLast (New httpresponseencoder ());                         //  The server side is receiving HttpRequest, so use Httprequestdecoder for decoding                          ch.pipeline (). AddLast (New httprequestdecoder ());                     &Nbsp;   ch.pipeline (). AddLast (New httpserverinboundhandler ());                     }                 }). Option (ChannelOption.SO _backlog, 128)               . Childoption (channeloption.so_keepalive, true);             channelfuture f = b.bind (port). Sync ();             f.channel (). Closefuture (). Sync ();         } finally {             Workergroup.shutdowngracefully ();             Bossgroup.shutdowngracefully ();         }    }    public static  Void main (String[] args)  throws Exception {         httpserver server = new httpserver ();         server.start (8844);     }}

Server. Httpserverinboundhandler.java

package server;import static io.netty.handler.codec.http.httpheaders.names.content_length; import static io.netty.handler.codec.http.httpheaders.names.content_type;import static  io.netty.handler.codec.http.httpresponsestatus.ok;import static  io.netty.handler.codec.http.httpversion.http_1_1;import java.util.random;import  io.netty.buffer.bytebuf;import io.netty.buffer.unpooled;import  io.netty.channel.channelhandlercontext;import io.netty.channel.channelinboundhandleradapter;import  io.netty.handler.codec.http.defaultfullhttpresponse;import io.netty.handler.codec.http.fullhttpresponse; Import io.netty.handler.codec.http.httpcontent;import io.netty.handler.codec.http.httprequest;import  org.apache.log4j.Logger;public class HttpServerInboundHandler extends  Channelinboundhandleradapter{private logger logger = logger.getlogger ( Httpserverinboundhandler.class);      @Override     public void channelread (ChannelHandlerContext  CTX, OBJECT MSG)             throws  Exception {            if  (msg  instanceof httprequest)  {        HttpRequest  request =  (HttpRequest)  msg;             string uri = request.geturi ();             logger.info ("Uri:"  + uri);        }                 if  (msg  Instanceof httpcontent)  {             Httpcontent content =&nBSP; (httpcontent)  msg;            bytebuf  buf = content.content ();             system.out.println (buf.tostring (io.netty.util.CharsetUtil.UTF_8));             buf.release ();                         string res =   "the random number from server is : " +new random (). NEXTINT (100);             fullhttpresponse response =  new defaultfullhttpresponse (Http_1_1,ok, unpooled.wrappedbuffer (Res.getBytes ("UTF-8"));             response.headers (). Set (CONTENT_TYPE,  " Text/plain ");   &Nbsp;         response.headers (). Set (CONTENT_LENGTH, Response.content (). Readablebytes ());             Ctx.write (response);             ctx.flush ();             ctx.close ();         }                         ctx.firechannelread (msg); //  jump to the next handler             }}

Netty4 Simple HTTP Service setup