javaSocket与C通信 - JAVA

前段时间写了个web端与C服务端之间的通信不过用的是短连接非堵塞的方式，一直想使用长连接，使tomcat启动的时候就和C服务端进行通信，但是一直没找到方法希望je的朋友能给点思路。先来看我现在的具体实现
通信的核心类
public class newsSockBase
{
private SocketChannel sc;
private final int MAX_LENGTH = 8192;
private ByteBuffer r_buff ;
private ByteBuffer w_buff ;
private static String host ;
private static int port;

int sendBufTotalLen;
int sendBufLen;
int sendBufStart;
byte[] sendBuf;

int recvBufTotalLen;
int recvBufLen;
int recvBufStart;
byte[] recvBuf;

int timeout;
String msg;

public newsSockBase()
{
r_buff = ByteBuffer.allocate(MAX_LENGTH);
w_buff = ByteBuffer.allocate(MAX_LENGTH);

sendBufTotalLen = MAX_LENGTH;
sendBufLen = sendBufStart = 0;
sendBuf = new byte[MAX_LENGTH];

recvBufTotalLen = MAX_LENGTH;
recvBufLen = recvBufStart = 0;
recvBuf = new byte[MAX_LENGTH];

timeout = 6;
}

public void setIPandPort(String str,int pt)
{
host = str;
port = pt;
}

//这两个函数一定要注意形参是基类而实际传入的参数是子类，到时候也是调用子类的参数来做
public void getBufFrompara(InewsDetail nD)
{
int len = nD.encode(sendBuf, sendBufStart, sendBufTotalLen-sendBufStart-sendBufLen);

sendBufLen += len;

}

public int decodeBufToPara(InewsDetail nD)
{
int len = nD.decode(recvBuf, recvBufStart, recvBufLen);
if (len>0) //解码正确的时候才做
{
recvBufLen -= len;
recvBufStart += len;
}

return len;
}

public void start(InewsDetail nD)
{

//这里需要先根据传入的参数来
getBufFrompara(nD);

try {
InetSocketAddress addr = new InetSocketAddress(host, port);
// 生成一个socketchannel
sc = SocketChannel.open();
sc.configureBlocking(false);//
// 连接到server
sc.connect(addr);
while (!sc.finishConnect())
;
System.out.println("connection has been established!…");

// while (true)
{
// 回射消息 // 复位，清空
w_buff.clear();
w_buff.put(sendBuf,sendBufStart,sendBufLen);
w_buff.flip(); // 转到最开始

// 发送消息
while (w_buff.hasRemaining())
sc.write(w_buff);
w_buff.clear();

// 进入接收状态
while (true)
{
int ss=0;
int count;
r_buff.clear();
while(ss {
count = sc.read(r_buff);
if (count>0)
break;
ss++;
Thread.curr

javaSocket与C通信 (一)