Java服务端NIO多线程编程库系列（一）

        Java作为一种跨平台的开发语言，被广泛地应用，对比C++来讲，不需要关心对象的释放，缓冲区的管理，使编程的细节处理上要简单了很多，但是在高负载、多线程、多任务的协作处理时，对象的频繁new，线程的频繁创建、销毁，仍有可能导致程序的异常崩溃；每一次网络开发的调试都是一个几乎要崩溃的过程，各种细节的处理会导致开发过程缓慢、周期变长，本文通过对NIO和线程池的调度封装，使服务端的高并发、网络信息传送简化成了命令的传送，让开发的整个过程规范化，使程序员在相应开发时只需注意业务的处理，将所有的网络端、多线程设定和管理简化成了配置文件。

        下面我先给出一段使用封装后的库进行网络开发的实例。

//这个参数类是创建服务所需要的一些配置参数，这些参数可以通过命令行或配件文件进行传递
//这里我们只看一下它的结构，而不用关心具体的内容
public class SceneParameter
{
    public int m_iReconnectCount = Integer.MAX_VALUE;

    public long m_lReconnectIntervalMSEL = 5 * 1000;

    /**
     * CipherKeyService监听地址
     */
    public InetSocketAddress m_remoteAddressCipherKeyService = null;

    /**
     * CompensationService监听地址
     */
    public InetSocketAddress m_remoteAddressCompensationService = null;

    /**
     * MulticastSourceService监听地址
     */
    public InetSocketAddress m_remoteAddressMulticastSourceService = null;

    /**
     * PublicNetworkService监听地址
     */
    public InetSocketAddress m_remoteAddressPublicNetworkService = null;

    /**
     * CompensationService远程连接地址的long型表示
     *      高32位保存了端口号，
     *      低32位保存了IP地址；
     */
    public long m_lCompensationServiceAddress = 0;

    public MySceneLog m_mySenceLog;
｝

        我们为每一个服务端所需要的配置创建一个参数类，参数类中的内容可以是由命令行或者配置文件来赋值，这个参数类做为创建服务时传递的参数。

        

public class AssignSceneAddressService
{
    /**
     * 版本号
     */
    private static String s_strVersion = "V1.0.3.2020.02.23.20.11";

    static class AppParameter
    {
        public String m_strConfigFile = "AssignSceneAddressService.config";
    }

    public static void main(String[] args)
    {
        try
        {
            //Tcp监听服务，用于终端与CompensationServer的连接
            //CompensationServer主动与组播服务器建立连接
            SceneParameter sp = new SceneParameter();
            TcpServerParameter tsp = new TcpServerParameter(null, null);
            tsp.m_nioTcpParameter = new NioTcpParameter();
            //应该将服务端的配置变成配置文件

            AppParameter ap = new AppParameter();
            AssignSceneAddressServiceConfig asasc = AssignSceneAddressService.parseCmdLine( ap, args, "=");
            sp.setCompensationServiceRemoteAddress( asasc.m_remoteCompensationServiceConfig.getInetSocketAddress() );
            sp.m_remoteAddressCipherKeyService = asasc.m_remoteCipherKeyServiceConfig.getInetSocketAddress();
            sp.m_remoteAddressMulticastSourceService = asasc.m_remoteMulticastSourceServiceConfig.getInetSocketAddress();
            sp.m_remoteAddressPublicNetworkService = asasc.m_publicNetworkServiceConfig.getInetSocketAddress();
            sp.m_iReconnectCount = asasc.m_nioTcpConnectorParmeterConfig.m_iReconnectCount;
            sp.m_lReconnectIntervalMSEL = asasc.m_nioTcpConnectorParmeterConfig.m_lReconnectIntervalMSEL;

            tsp.m_strBindAddress = asasc.m_remoteAssignSceneAddressServiceConfig.m_strBindAddress;
            tsp.m_iListenPort = asasc.m_remoteAssignSceneAddressServiceConfig.m_iPort;
            tsp.m_iMaxSelectorCount = asasc.m_iMaxSelectorCount;
            asasc.m_nioTcpParameterConfig.copyTo( tsp.m_nioTcpParameter );

            //这里可以根据参数，决定选用哪一种Log
            sp.m_mySenceLog = new MySceneLog();

            LogLevel.setLogOutLevel( asasc.m_logOutConfig.m_lLogOutLevel );
            //LogLevel.getLogFile().setJsonLogFileConfig( asasc.m_logFileConfig );
            //LogLevel.getLogFile().startThread();
            LogLevel.getLogFileEx().setJsonLogFileConfig( asasc.m_logFileConfig );
            LogLevel.getLogFileEx().startThread();

            LogLevel.outputToLogFile( Convenient.s_dfFullDateTime.format(new Date(System.currentTimeMillis()))
                    + " SMKE - AssignSceneAddressService is running! " + AssignSceneAddressService.s_strVersion
                    + "; \r\n\tListen address is " + tsp.getAddress()
                    + "; \r\n\tPublic network service address is " + sp.getPublicNetworkServiceRemoteAddress()
                    + "; \r\n\tMulticast source service address is " + sp.getMulticastSourceServiceRemoteAddress()
                    + "; \r\n\tCompensation service address is " + sp.getCompensationServiceRemoteAddress()
                    + "; \r\n\tCipherKey service address is " + sp.getCipherKeyServiceRemoteAddress() );
            
            //创建服务的处理线程
            ne