正在应用SNMP4J时，尔念指定缔造的客户端应用的内陆IP战端心，由于正在Socket时那是能够的，然则呈现没法杀青由于SNMP4J底层的通讯是应用NIO完毕的，而NIO编程时好像便没有能表现的指定比方正在SNMP4J的DefaultTcpTransportMapping类内部，看成为客户端须要收收新闻时，步伐起首判定能否创办了那个客户端，即使不正在树立时瞅到如许的代码：
SocketChannelsc=null;try{sc=SocketChannel.open();sc.configureBlocking(false);sc.connect(newInetSocketAddress(((TcpAddress)address).getInetAddress(),((TcpAddress)address).getPort()));s=sc.socket();entry=newSocketEntry((TcpAddress)address,s);entry.addMessage(message);sockets.put(address,entry);synchronized(pending){pending.add(entry);}selector.wakeup();logger.debug("Tryingtoconnectto"+address);}catch(IOExceptioniox){logger.error(iox);throwiox;}便使正在SocketChannel中，他的Socket变量界说也是没有能修正的：
/***Retrievesasocketassociatedwiththischannel.**<p>Thereturnedobjectwillnotdeclareanypublicmethodsthatarenot*declaredinthe{@linkjava.net.Socket}class.</p>**@returnAsocketassociatedwiththischannel*/publicabstractSocketsocket();因而尔曲交判断Java NIO中，客户端是没法指定本身的IP战端心的！那末有人正在念为何须要指定本身的IP战端心？详细需要尔便没有再道了，正在计划机上固然惟有1块网卡，然则尔们能够应用兼容的IP：
因为尔的效劳端次第以客户端IP去判定疑息根源，此刻尔须要正在尔的电脑上干尝试次第，须要共时国定二个IP天址停止新闻收收。此时尔便能够正在初级设立内里树立兼容IP便能够，然则此刻顺序却没法采取。正在Socket内部能够如许写：
packagecom.xidian.nms.socket;importjava.net.InetSocketAddress;importjava.net.ServerSocket;importjava.net.Socket;importjava.net.SocketAddress;publicclassSocketServer{publicstaticvoidmain(String[]args)throwsException{//制造非国定式毗连对于象ServerSocketss=newServerSocket();//须要国定的当地IP战天址SocketAddressaddress=newInetSocketAddress("192.168.0.109",2330);//将毗连对于象国定到天址ss.bind(address);System.out.println("效劳仍然开动");while(true){//接纳哀求SocketsocketClient=ss.accept();//客户端IPStringip=socketClient.getInetAddress().getHostAddress();// 客户端端心intport=socketClient.getPort();System.out.println("效劳端支到乞求："+ip+"/"+port);}}}效劳端很复杂，您能够1止代码弄定，也能够表现的指定IP、端心，而后停止表现的效劳毗连掌握：
packagecom.xidian.nms.socket;importjava.net.InetAddress;importjava.net.InetSocketAddress;importjava.net.Socket;importjava.net.SocketAddress;publicclassSocketClient{publicstaticvoidmain(String[]args)throwsException{Socketsocket=newSocket();//须要国定的内地IPInetAddressiaddThis=InetAddress.getByName("192.168.1.109");//须要国定的内陆天址SocketAddresssaddThis=newInetSocketAddress(iaddThis,2331);socket.bind(saddThis);//毗连的近程效劳天址InetAddressiaddRe=InetAddress.getByName("192.168.0.109");SocketAddresssaddRe=newInetSocketAddress(iaddRe,2330);//表现毗连socket.connect(saddRe);//Socketsocket=newSocket("192.168.0.109",2330);}}疏解失落的内乱容是1止弄定毗连的体例。固然那是尔出现的1个题目，没有晓得怎样处理，盼望对于NIO领会的人辅导1停。
后有下人提醒，处理该题目，且通过尝试，假使念要修正所国定的IP战表现再次停止毗连掌握，须要把建立NIO共步的代码搁到前面：
try{sc=SocketChannel.open();s=sc.socket();s.bind(newInetSocketAddress("192.168.0.109",999));s.connect(newInetSocketAddress(((TcpAddress)address).getInetAddress(),((TcpAddress)address).getPort()));sc.configureBlocking(false);entry=newSocketEntry((TcpAddress)address,s);entry.addMessage(message);sockets.put(address,entry);synchronized(pending){pending.add(entry);}selector.wakeup();logger.debug("Tryingtoconnectto"+address);}catch(IOExceptioniox){logger.error(iox);throwiox;}不然会报错：
Exceptioninthread"main"java.nio.channels.IllegalBlockingModeExceptionatsun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:76)atsun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:65)atorg.snmp4j.transport.DefaultTcpTransportMapping$ServerThread.sendMessage(DefaultTcpTransportMapping.java:503)atorg.snmp4j.transport.DefaultTcpTransportMapping.sendMessage(DefaultTcpTransportMapping.java:183)atorg.snmp4j.MessageDispatcherImpl.sendMessage(MessageDispatcherImpl.java:214)atorg.snmp4j.MessageDispatcherImpl.sendPdu(MessageDispatcherImpl.java:475)atorg.snmp4j.Snmp.sendMessage(Snmp.java:1110)atorg.snmp4j.Snmp.send(Snmp.java:914)atorg.snmp4j.Snmp.send(Snmp.java:894)atorg.snmp4j.Snmp.send(Snmp.java:859)atcom.xidian.nms.snmp.Snmp4jGet.sendPDU(Snmp4jGet.java:59)atcom.xidian.nms.snmp.Snmp4jGet.main(Snmp4jGet.java:38)推举您浏览更多相关于“ java收集编程nio国定端心snmpsnmp4j ”的作品
